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Hebei: Boiler Air Pollutant Emission Standards (Draft for Public Comment)

 

Recently, Hebei Province issued the "Emission Standard for Air Pollutants from Boilers (Draft for Public Comment)". The standard applies to single-unit steam boilers with a capacity of 65 t/h or less that use coal, oil, gas, or biomass as fuel, as well as non-power generation steam boilers with a capacity of 65 t/h or more, hot water boilers of various capacities, organic heat carrier boilers, stoker boilers of various capacities, and stoker-fired boilers. The emission limits for air pollutants are set at 10 mg/m³ for particulate matter, 35 mg/m³ for sulfur dioxide, and 50 mg/m³ for nitrogen oxides.

From November 1, 2019, in-use boilers shall comply with the air pollutant emission limits specified in Table 1; from the date of implementation of this standard, newly built boilers shall comply with the air pollutant emission limits specified in Table 1.

Table 1.  Emission Concentration Limits for Air Pollutants

                                           Unit: mg/m3 (excluding smoke opacity)

Pollutant Projects

Coal-fired boilers

Oil-fired boilers

Gas boiler

Biomass

Monitoring location

Particulate matter

10

5

5

10

chimney or flue

Sulfur dioxide

35

10

10

35

Nitrogen oxides (as NO2)

50

30

30

80

Mercury and its compounds

0.05

0.05

carbon monoxide

   

200

 

Smoke Ringelmann Smoke Color (Grade)

≤1

Chimney exhaust outlet

Boiler air pollutant emission standards 

(Draft for public comment) 

Foreword

This standard is formulated to implement the Environmental Protection Law of the People's Republic of China, the Atmospheric Pollution Prevention and Control Law of the People's Republic of China, and other laws and regulations, to protect the environment, prevent and control pollution, and promote the advancement of boiler production, operation, and pollution control technologies.

This standard specifies the emission limits, monitoring, and control requirements for air pollutants from boilers.

The water pollutants and environmental noise emitted by the boiler are subject to the relevant national pollutant emission standards, and the identification, treatment and disposal of the solid waste generated are subject to the national solid waste pollution control standards.

This standard was proposed by the Hebei Provincial Department of Environmental Protection.

The drafting units of this standard are: Hebei Provincial Environmental Engineering Assessment Center, Hebei University of Science and Technology, and Hebei Qizheng Environmental Technology Co., Ltd.

The main drafters of this standard are:

The Hebei Provincial Department of Environmental Protection is responsible for interpreting this standard.

Boiler air pollutant emission standards

1. Scope of application

This standard specifies the maximum allowable emission concentration limits for particulate matter, sulfur dioxide, nitrogen oxides, mercury and its compounds in the boiler atmosphere, as well as the limits for flue gas opacity. It also specifies the control limits for fugitive dust emissions from coal-fired boiler rooms.

This standard applies to single-unit steam boilers with a capacity of less than 65t/h that use coal, oil, gas, or biomass as fuel, as well as non-power generation steam boilers with a capacity of more than 65t/h, hot water boilers of various capacities, organic heat carrier boilers, stoker furnaces of various capacities, and pulverized coal boilers.

Boilers using fuels such as briquettes, petroleum coke, oil shale, coal gangue, coal-water slurry, heavy oil, and residual oil shall comply with the pollution emission control requirements for "coal-fired boilers" in this standard; boilers using light diesel oil, alcohol-based fuels (such as methanol and ethanol), and other liquid fuels shall comply with the pollution emission control requirements for "oil-fired boilers" in this standard; boilers using blast furnace gas, coke oven gas, and other gaseous fuels shall comply with the pollution emission control requirements for "gas-fired boilers" in this standard.

This standard does not apply to boilers that use municipal solid waste, hazardous waste, and other non-hazardous waste as fuel.

This standard applies to the emission management of air pollutants from in-use boilers, as well as the environmental impact assessment, environmental protection facility design, environmental protection acceptance upon completion, and air pollutant emission management after boiler construction projects are put into operation.

This standard applies to pollutant discharge activities permitted by law; the site selection of newly established pollution sources and the management of existing pollution sources within special protection areas shall be carried out in accordance with the relevant provisions of the "Air Pollution Prevention and Control Law of the People's Republic of China", "Water Pollution Prevention and Control Law of the People's Republic of China", "Marine Environmental Protection Law of the People's Republic of China", "Solid Waste Pollution Prevention and Control Law of the People's Republic of China", "Radioactive Pollution Prevention and Control Law of the People's Republic of China", and "Environmental Impact Assessment Law of the People's Republic of China".

2. Normative references

The clauses in the following documents, through reference in this standard, become clauses of this standard. For undated references, the latest version (including amendments) applies.

GB3095 Ambient Air Quality Standard

GB5648 Test Method for Boiler Flue Dust

GB13271 Emission Standard for Air Pollutants from Boilers

GB/T16157 Determination of Particulate Matter and Sampling Methods for Gaseous Pollutants in Exhaust Gas from Stationary Sources

HJ/T42 Determination of Nitrogen Oxides in Exhaust Gas from Stationary Sources by Ultraviolet Spectrophotometry

HJ/T43 Determination of Nitrogen Oxides in Exhaust Gas from Stationary Sources using Naphthylethylenediamine Hydrochloride Spectrophotometric Method

HJ/T44 Determination of Carbon Monoxide in Exhaust Gas from Stationary Sources: Nondispersive Infrared Absorption Spectrometry

HJ/T56 Determination of Sulfur Dioxide in Exhaust Gas from Stationary Sources by Iodometric Method

HJ/T57 Determination of Sulfur Dioxide in Exhaust Gas from Stationary Sources by Constant Potential Electrolysis

HJ/T75 Technical Specification for Continuous Monitoring of Flue Gas Emissions from Stationary Sources (Trial)

HJ/T76 Technical Requirements and Testing Methods for Continuous Emission Monitoring Systems for Stationary Sources (Trial)

HJ/T373 Technical Specification for Quality Assurance and Quality Control of Stationary Pollution Source Monitoring (Trial)

HJ/T397 Technical Specification for Monitoring of Stationary Source Exhaust Gas

HJ/T398 Determination of smoke opacity from stationary sources using the Ringelmann smoke opacity diagram method

HJ543 Determination of Mercury in Exhaust Gas from Stationary Sources: Cold Atomic Absorption Spectrophotometry

HJ629 Determination of Sulfur Dioxide in Stationary Source Exhaust Gas: Non-dispersive Infrared Absorption Spectrometry

HJ692 Determination of Nitrogen Oxides in Stationary Source Exhaust Gas: Non-dispersive Infrared Absorption Spectrometry

HJ693 Determination of Nitrogen Oxides in Exhaust Gas from Stationary Sources by Constant Potential Electrolysis

HJ836 Determination of Low-Density Particulate Matter in Exhaust Gas from Stationary Sources (Gravimetric Method)

DB13/T2376 Determination of Particulate Matter in Exhaust Gas from Stationary Sources by Beta-ray Diffusion

Regulations on the Management of Automatic Monitoring of Pollution Sources (Order No. 28 of the State Environmental Protection Administration)

Environmental Monitoring Management Measures (Order No. 39 of the State Environmental Protection Administration)

3. Terms and Definitions

The following terms and definitions apply to this standard.

3.1 Boiler

Equipment that uses the heat energy released from fuel combustion or other heat energy to heat hot water or other working fluids to produce steam, hot water or other working fluids with specified parameters (temperature, pressure) and quality.

3.2 In-use boilers

Boilers that have been built and put into operation or whose environmental impact assessment documents have been approved before the date of implementation of this standard.

3.3 Newly built boiler

From the date of implementation of this standard, newly built, renovated and expanded boilers whose environmental impact assessment documents have been approved.

3.4 Organic heat carrier boiler

A boiler that uses organic liquid as the heat transfer medium.

3.5 Standard State

The state of boiler flue gas at a temperature of 273 K and a pressure of 101325 Pa is referred to as "standard state". The emission concentrations specified in this standard refer to the values ​​of dry flue gas under standard conditions.

3.6 Air pollutant emission concentrations

The average mass concentration of air pollutants in the dry exhaust gas from the chimney over any 1 hour under standard conditions, expressed in mg/m3.

3.7 Chimney Height

The height from the ground level where the chimney (or boiler room) is located to the chimney outlet.

3.8 Oxygen content

The excess free oxygen contained in the flue gas after fuel combustion is usually expressed as a dry volume percentage.

4. Requirements for the control of air pollutant emissions

4.1 From November 1, 2019, in-use boilers shall comply with the air pollutant emission limits specified in Table 1; from the date of implementation of this standard, newly built boilers shall comply with the air pollutant emission limits specified in Table 1.

Table 1.  Emission Concentration Limits for Air Pollutants          

                                                  Unit: mg/m3 (excluding smoke opacity)

Pollutant Projects

Coal-fired boilers

Oil-fired boilers

Gas boiler

Biomass

Monitoring location

Particulate matter

10

5

5

10

chimney or flue

Sulfur dioxide

35

10

10

35

Nitrogen oxides (as NO2)

50

30

30

80

Mercury and its compounds

0.05

0.05

carbon monoxide

   

200

 

Smoke Ringelmann Smoke Color (Grade)

≤1

Chimney exhaust outlet

4.2 The coal-fired boiler storage yard shall be enclosed, and the concentration of fugitive dust in the coal-fired boiler room shall comply with the provisions of Table 2.

Table 2.   Control Limits for Fugitive Dust Emissions from Coal-fired Boiler Rooms

                                  Unit: mg/m3

Pollutant Projects

Limit

Unorganized dust (concentration difference between the monitoring point and the upwind reference point)

0.2

4.3 Each coal-fired boiler room may only have one chimney. The chimney height shall be determined according to the total installed capacity of the boiler room, as specified in Table 3. The chimney height for oil-fired and gas-fired boilers shall not be less than 8 meters. The specific height of the boiler chimney shall be determined according to the approved environmental impact assessment document. If there are buildings within a 200-meter radius of the chimney of a newly built boiler room, the chimney shall be at least 3 meters higher than the tallest building.

Table 3 Minimum Allowable Height of Chimney for Coal-fired Boiler Rooms

Total installed capacity of boiler room

MW

<0.7

0.7 — <1.4

1.4 — <2.8

2.8— <7

7— <14

≥14

t/h

<1

1— <2

2— <4

4— <10

10— <20

≥20

Minimum allowable height of chimney

m

20

25

30

35

40

45

4.4 The design of denitrification equipment should take necessary measures to ensure that the reactants are mixed evenly and react completely, thereby reducing the emission of toxic and harmful air pollutants or those that may have a direct or indirect impact on ambient air quality.

For denitrification equipment using selective catalytic reduction (SCR) technology, the ammonia slip concentration should not exceed 2.3 mg/m3.

For denitrification equipment using selective non-catalytic reduction (SNCR) technology, the ammonia slip concentration should not exceed 7.6 mg/m3.

4.5 For boilers constructed at different times, if they use a mixed emission method and the selected monitoring location can only monitor the concentration of air pollutants in the mixed flue gas, the most stringent emission limit among the limits for each time period shall be implemented.

5. Pollutant monitoring requirements

5.1 Requirements for Pollutant Sampling and Monitoring

5.1.1 Boiler users shall, in accordance with relevant laws and the "Environmental Monitoring Management Measures", establish a corporate monitoring system, formulate a monitoring plan, conduct self-monitoring of pollutant emissions, keep original monitoring records, and publish the monitoring results.

5.1.2 Boiler users shall design, construct, and maintain permanent sampling ports and sampling and testing platforms in accordance with the requirements of environmental monitoring management regulations and technical specifications.

5.1.3 Sampling of exhaust gas emitted by boiler-using enterprises shall be conducted at the designated pollutant emission monitoring locations, based on the types of pollutants to be monitored. Where exhaust gas treatment facilities are in place, monitoring shall be conducted downstream of those facilities. Monitoring of air pollutants in exhaust stacks shall be carried out in accordance with current relevant regulations.

5.1.4 Steam boilers with a capacity of 20t/h or above, hot water boilers with a capacity of 14MW or above, and key air pollutant discharge units identified by the environmental protection authorities shall install automatic pollutant emission monitoring equipment and connect it to the environmental protection department's network to ensure normal operation of the equipment and comply with relevant laws and the "Regulations on the Management of Automatic Monitoring of Pollution Sources".

5.1.5 Monitoring of air pollutants from boilers shall be carried out in accordance with the relevant provisions of HJ/T373 for monitoring quality assurance and quality control.

5.1.6 The concentration of air pollutants emitted from boilers shall be determined using the methods and standards listed in Table 4.

Table 4   Standard Methods for Measuring Air Pollutant Concentration in Boilers

Serial Number

Pollutant Projects

Method Standard Name

Standard Number

1

Particulate matter

Boiler flue dust testing methods

GB 5468

Methods for determining particulate matter and sampling gaseous pollutants in exhaust gas from stationary sources

GB/T 16157

Gravimetric method for determining low concentration particulate matter in exhaust gas from stationary pollution sources

HJ836

Determination of particulate matter in exhaust gas from stationary pollution sources using the beta-ray diffraction method

DB13/T2376

2

Smoke blackness

Measurement of smoke opacity from stationary pollution sources: Ringelmann smoke opacity diagram method

HJ/T 398

3

Sulfur dioxide

Determination of sulfur dioxide in exhaust gas from stationary pollution sources: Iodometric method

HJ/T 56

Determination of sulfur dioxide in exhaust gas from stationary pollution sources: constant potential electrolysis method

HJ/T 57

Determination of sulfur dioxide in stationary source exhaust gas: Non-dispersive infrared absorption method

HJ 629

4

nitrogen oxides

Determination of Nitrogen Oxides in Exhaust Gas from Stationary Sources by Ultraviolet Spectrophotometry

HJ/T 42

Determination of Nitrogen Oxides in Exhaust Gas from Stationary Sources: Naphthylethylenediamine Hydrochloride Spectrophotometric Method

HJ/T 43

Determination of Nitrogen Oxides in Stationary Source Exhaust Gas: Non-dispersive Infrared Absorption Spectrometry

HJ 692

Determination of Nitrogen Oxides in Emissions from Stationary Sources: Constant Potential Electrolysis Method

HJ 693

5

Mercury and its compounds

Determination of Mercury in Stationary Source Exhaust Gas by Cold Atomic Absorption Spectrophotometry

HJ 543

6

Unorganized dust

Method for determining total suspended particulate matter in ambient air: Gravimetric method

Technical Guidelines for Monitoring Unorganized Emissions of Air Pollutants

GB/T15432

HJ/T 55

5.2 Method for converting baseline oxygen content emission concentration of air pollutants

The measured emission concentrations of particulate matter, sulfur dioxide, and nitrogen oxides from the boiler must be converted into baseline oxygen content emission concentrations according to formula (1). The baseline oxygen content for coal-fired boilers shall be implemented in accordance with the provisions of Table 5.

Table 5.   Reference Oxygen Content

Boiler type

Reference oxygen content (O2 ) /%

Coal-fired boilers

9

Oil and gas boilers

3.5

                                                         ................................................................ (1)

In the formula:

c — Baseline oxygen content emission concentration of air pollutants, mg/m3;

c' — Measured concentration of atmospheric pollutants emitted, mg/m3;

O'2 — Measured oxygen content, %

O2 — baseline oxygen content, %.

 6. Implementation and supervision of standards

6.1 This standard shall be supervised and implemented by the environmental protection administrative department of the people's government at or above the county level.

6.2 Under all circumstances, enterprises shall comply with the pollutant emission control requirements of this standard and take necessary measures to ensure the normal operation of pollution prevention and control facilities. Environmental protection departments at all levels may use on-site sampling or monitoring results as the basis for determining whether the discharge behavior complies with the standard emission limits and for implementing relevant environmental protection management measures during supervisory inspections of enterprises.

6.3 After the date of publication of this standard, if any newly formulated or revised national or local (comprehensive or industry-specific) air pollutant emission standards have pollutant emission limits that are stricter than those of this standard, the corresponding emission standards shall be implemented in accordance with the principle of stricter requirements.

(Source: Hebei Provincial Department of Environmental Protection)

 
 
 
 

Henan Zhengzhou releases subsidy standards for low-nitrogen retrofitting

 

To fully implement the spirit of the 19th National Congress of the Communist Party of China, advance air pollution prevention and control, improve air quality, and promote the application of advanced and practical environmental protection technologies, a meeting was recently held in Zhengzhou, Henan Province, regarding the low-nitrogen retrofit project for natural gas boilers in Zhengzhou. The details of the low-nitrogen retrofit subsidy standards are as follows:

By the end of September 2018, all natural gas boilers in Zhengzhou with a capacity of 20 tons or more and those in the urban area with a capacity of 4 tons or more will have completed the retrofitting process to a concentration of 30 mg/m³.

By the end of September 2019, all natural gas boilers with a capacity of 4 tons or more in the city and those with a capacity of 2 tons or more in the urban area will have completed the retrofitting process to 30 mg/m³.

By the end of September 2020, all natural gas boilers in the city will have completed the retrofitting to 30mg/cubic meter.

 
 
 
 

2018 Boiler Retrofitting Subsidy Policy

 

With the implementation of coal-fired boiler renovation projects, a nationwide environmental protection boom in boiler renovation has been launched. Coupled with the implementation of subsidy policies by relevant departments for coal-fired boiler users who renovate on schedule, this "green revolution" has become even more popular.

Gansu Province www.yn-boiler.com

★ 2018 Lanzhou City's Latest Special Fund Subsidy Measures for Upgrading and Retrofitting Coal-fired Boilers

Lanzhou City provides financial support in the form of "rewards instead of subsidies" to owners of coal-fired boiler renovation and treatment facilities, following the principle of "choosing smaller projects over larger ones." The specific subsidy method is as follows:

1. A subsidy of RMB 100,000 per ton of steam will be provided for the clean energy transformation of a single coal-fired boiler with a capacity of 1 ton/hour or 0.7 MW (inclusive) or more.

2. For coal-fired heating boilers that have been upgraded and treated to meet the national special emission limits for air pollutants from boilers, a subsidy of 50,000 yuan per ton of steam will be provided, with the subsidy amount not exceeding 30% of the total investment of the project;

3. For clean energy retrofits of coal-fired heating boilers in public utilities (including schools, health centers, hospitals, township governments or street offices and other public utilities) with a capacity of 1 ton/hour or less or less than 0.7 megawatts, subsidies will be provided based on the actual heating area, with a subsidy standard of 100 yuan/square meter.

Henan Province www.yn-boiler.com

 The latest subsidy standards for coal-fired boiler renovation and treatment in 2018

Prior to the release of the "Implementation Plan for the Battle Against Air Pollution in Henan Province in 2018", Henan Province had not issued specific boiler subsidy standards. Instead, various cities and counties in Henan had issued local subsidy standards for the renovation of coal-fired boilers and the renovation of low-nitrogen combustion boilers.

Henan Province is implementing a funding subsidy method that decreases annually:

1. A subsidy of no less than 60,000 yuan per ton of steam will be given to coal-fired boilers that have been dismantled or modified before the end of October 2018;

2. A subsidy of no less than 40,000 yuan per ton of steam will be given to coal-fired boilers that have been dismantled or modified before the end of October 2019;

3. No further subsidies will be given to coal-fired boilers that have been dismantled or modified by the end of October 2020.

In addition, the boiler elimination methods mainly include dismantling and elimination, replacement of centralized heating boilers, coal-to-gas conversion, coal-to-electricity conversion, conversion to geothermal, wind, solar, and biomass energy equipped with bag filters. It does not include conversion to clean coal, coal-water slurry, anthracite, semi-coke, green coke, crude oil, etc. The dismantling of coal-fired boilers must involve dismantling the chimney or physically cutting off the flue to prevent them from resuming production.

It is strictly prohibited to use shut-down or obsolete coal-fired boilers to fraudulently obtain subsidies. When converting coal-fired boilers to natural gas, low-nitrogen retrofitting must be carried out simultaneously.

Hebei Province www.yn-boiler.com

 Measures for Subsidizing Special Funds for the Treatment of Coal-fired Boilers

Hebei Province has a large number of industrial boilers, making the elimination of coal-fired boilers under 10 tons a very challenging task. To support the steady progress of pollution control efforts, Hebei Province has formulated the "Hebei Provincial Measures for the Management of Fiscal Subsidies for Comprehensive Air Pollution Control," with detailed boiler subsidy information as follows:

1. Subsidy standards for coal-to-electricity conversion in rural areas

A subsidy of 85% of the investment in household equipment purchase and installation (including indoor wiring renovation) will be provided, with a maximum subsidy of 7,400 yuan per household. The subsidy will be shared equally by the province and the city/county, with the remainder borne by the user. A subsidy of 0.2 yuan/kWh will be provided for residential electricity consumption during the heating season, with the province, city, and county each bearing one-third of the cost. The maximum subsidized electricity consumption per household is 10,000 kWh. The subsidy policy and standards are tentatively set for three years.

2. Subsidy standards for gas-for-coal conversion in rural areas

A subsidy of 70% of the investment in the purchase and installation of gas equipment for each household will be provided, with a maximum subsidy of 2,700 yuan per household. This subsidy will be shared equally by the province and the city/county, with the remainder borne by the user. A gas price subsidy of 1 yuan per cubic meter will be provided for heating gas, with a maximum subsidized gas volume of 1,200 cubic meters per household per year. This subsidy will be shared equally by the province, city, and county, with the subsidy policy and standards tentatively set for three years. A maximum investment subsidy of 4,000 yuan per household will be provided for the construction of village-level in-home pipelines, with 1,000 yuan borne by the province and 3,000 yuan by the city/county.

3. Subsidy Standards for Coal-fired Boiler Treatment

The subsidy funds will be used to subsidize the renovation and elimination of coal-fired boilers. The subsidy is 30,000 yuan per steam ton for boilers that are removed and demolished separately, and 80,000 yuan per steam ton for boilers that are transformed to clean energy.

4. Subsidy Standards for the Closure and Elimination of Thermal Power Plants

The provincial government provides a subsidy of 300 yuan per kilowatt for shut-down generating units, which has been included in the national "13th Five-Year Plan". This excludes units scheduled for elimination and shutdown, units illegally constructed, units that have reached the end of their service life, and units that choose to trade power capacity quotas.

Shandong Province www.yn-boiler.com

 Qingdao Coal-fired Boiler Elimination and Remediation Subsidy Standards

Since the beginning of 2017, Qingdao has issued a total of 240 million yuan in subsidies for the treatment and renovation of coal-fired boiler exhaust gas, which is the sum of the subsidies from 2014 to 2016. In 2018, the city will invest another 350 million yuan to subsidize the ultra-low emission renovation of coal-fired boilers.

From January to October 2017, Qingdao saw an increase of 16 days with "blue skies, white clouds, and twinkling stars" compared to the same period last year, reaching 289 days, accounting for more than 95% of the total days. The average concentrations of fine particulate matter (PM2.5) and inhalable particulate matter (PM10) reached 35 micrograms per cubic meter and 70 micrograms per cubic meter, respectively, representing year-on-year improvements of 16.7% and 14.6%, the best levels in the same period in the past five years. The air quality ranked among the best in the province, and the city received 16.77 million yuan in reward funds from the provincial government in the first half of the year.

Qingdao Boiler Subsidy Policy Standards:

From 2014 to 2016, the municipal finance provided 230 million yuan in subsidies for the high-efficiency treatment and renovation projects of coal-fired boilers. Starting in 2016, a subsidy of 100,000 yuan per ton of steam was provided for the treatment and renovation of exhaust gas from coal-fired boilers (note: subsidies for boiler renovations began in 2016 and continue to this day). From the beginning of 2017 to the present, a total of 240 million yuan in subsidies has been issued, which is the sum of the previous three years (2016-2017). In 2018, another 350 million yuan will be invested to subsidize the ultra-low emission renovation of coal-fired boilers.

Jiangsu Province www.yn-boiler.com

 Suqian Coal-fired Boiler Elimination and Rectification Fund Subsidy Scheme

1. Scope of boiler treatment:

By the end of 2017, the rectification of coal-fired boilers with a capacity of 10 tons/hour or less in the urban area and the rectification of coal-fired boilers with a capacity of 10-20 tons/hour within the coverage area of ​​the natural gas pipeline network will be fully completed. By the end of 2018, the rectification of coal-fired boilers with a capacity of more than 20 tons/hour and 35 tons/hour or less in the urban area will be fully completed. By the end of 2017, all types of high-pollution fuel boilers in use within the high-pollution fuel prohibited zones in the urban area will be shut down or converted to clean energy sources such as natural gas, liquefied petroleum gas, and electricity.

2. Subsidy Measures for the Dismantling and Renovation of Coal-fired Boilers in Suqian:

To help businesses reduce the cost of switching to clean energy, the "Work Plan for Accelerating the Centralized Rectification of Coal-fired Boilers in Urban Areas" proposes a series of supporting policies and measures, and clarifies subsidy standards.

Enterprises using centralized heating will receive a one-time subsidy for dismantling coal-fired boilers, with steam prices negotiable by the enterprises themselves, and no separate subsidy will be provided. Energy costs will be subsidized for enterprises converting from coal to piped natural gas. Investment in the coal-to-electricity conversion will be subsidized for enterprises converting from coal to electricity. The subsidy policy for converting liquefied natural gas to piped natural gas is the same as for coal-to-piped natural gas boilers. The subsidy period is two years, 2017 and 2018.

The plan categorizes boiler renovation methods into four types and specifies subsidy standards: for those converted to centralized heating, subsidies are tiered based on the capacity of a single boiler, with the subsidy amount not exceeding the assessed replacement cost of the boiler.

For those who switch from coal to piped natural gas, a subsidy of 0.76 yuan per cubic meter will be provided based on the actual gas consumption for two consecutive years.

For coal-to-electricity conversion, a one-time subsidy of 20% of the investment amount will be provided; fourth, for liquefied natural gas to piped natural gas conversion, the subsidy standard is the same as that for coal-to-piped natural gas conversion.

Jilin Province www.yn-boiler.com

 Changchun provides subsidies for the treatment and renovation of coal-fired boilers.

Changchun City, Jilin Province, is actively promoting the renovation and treatment of coal-fired boilers. Recently, the Changchun Environmental Protection Bureau approved 174 coal-fired boilers that met the application requirements, with a total renovation and treatment capacity of 9,180 tons. It is estimated that approximately 180 million yuan in government subsidies will be distributed.

To continuously improve the city's air quality, the Changchun Municipal Government has been increasing its financial investment and giving full play to the guiding role of fiscal funds to accelerate the upgrading and treatment of coal-fired boilers.

The "Changchun City 2017 Annual Fiscal Fund Subsidy Scheme for Pollution Control of Coal-fired Boilers" clearly stipulates the boiler subsidy standard, providing a subsidy of 20,000 yuan per ton for non-electric coal-fired boilers of 20 tons/hour or above that have completed pollution control and renovation on schedule.

In addition, to comprehensively ascertain the number of boilers meeting the application requirements, the Changchun Environmental Protection Bureau organized environmental monitoring stations to conduct compliance monitoring of coal-fired boilers, prioritizing monitoring of those intending to apply for the 2017 fiscal subsidy for coal-fired boiler pollution control. The bureau also held multiple coordination meetings to publicize and clarify the requirements for subsidy standards, urging relevant units to accelerate the progress of the fiscal subsidy work related to coal-fired boiler pollution control.

Jiangxi Province www.yn-boiler.com

 Yichun Coal-fired Boiler Renovation and Elimination Subsidy Fund Issuance Method

In recent years, Yichun City has implemented a comprehensive energy-saving and environmental protection upgrade project for coal-fired boilers, eliminating 75% of coal-fired boilers with a capacity of 10 tons per hour or less in the city's central urban area, and prohibiting the construction of new coal-fired boilers with a capacity of 20 tons per hour or less; in principle, no new coal-fired boilers with a capacity of 10 tons per hour or less will be built in other areas.

Recently, the Jiangxi Provincial Department of Finance allocated special subsidies for boilers, providing subsidies to enterprises in the central urban area of ​​Yichun City that eliminated coal-fired boilers with a capacity of 10 tons/hour or less in 2015-2016. The subsidy standards are as follows: 10,000 yuan per unit for eliminating coal-fired boilers with a capacity of 2 tons/hour or less; and 20,000 yuan per unit for eliminating coal-fired boilers with a capacity of 2-10 tons/hour.

Shandong Province www.yn-boiler.com

 Shandong Government Subsidy Standards for Ultra-Low Emission Retrofitting of Coal-fired Boilers

To accelerate the ultra-low emission retrofitting of coal-fired power units (boilers) across the province and further improve air quality, Shandong Province, having already raised 426 million yuan in subsidies over two consecutive years, is expanding the scope of subsidies this year by allocating an additional 200 million yuan to reward cities that performed well in 2016. This will ensure that the ultra-low emission retrofitting of all coal-fired power units of 100,000 kilowatts and above, and single coal-fired boilers of 10 tons/hour or more, is completed by the end of 2018.

It is understood that the reward funds are divided into two parts:

First, a reward of 101.26 million yuan will be given for ultra-low emission retrofitting of coal-fired power units. The funds will be allocated according to the scale of ultra-low emission retrofitting of coal-fired power units below 100,000 kilowatts completed and accepted by each city, at a rate of 35,000 yuan/MW.

Second, a reward fund of 90 million yuan will be allocated for ultra-low emission transformation of coal-fired boilers. The fund will be based on the proportion of coal-fired boilers with a capacity of 10 tons/hour or more that have completed acceptance testing in each city, relative to the total number of boilers required for acceptance testing. Cities achieving a completion rate of 40% and ranking among the top three in the province will receive a reward of 30 million yuan per city. By leveraging the guiding and incentive role of fiscal funds, cities are encouraged to implement transformation, reduce emissions, and benefit early, ensuring the high-quality and efficient completion of the province's ultra-low emission transformation targets.

The retrofitting of coal-fired boilers has become a consensus. Zhengzhou Boiler Factory can achieve energy saving, consumption reduction and pollution reduction by implementing energy-saving retrofitting of coal-fired boilers. Moreover, if the existing coal-fired boiler has low energy consumption and has been in operation for a long time, Zhengzhou Boiler Factory can also tailor a coal-fired boiler retrofitting solution according to the specific conditions of the boiler site.

Zhejiang Province www.yn-boiler.com

 Zhejiang's preferential subsidy policy for phasing out and dismantling coal-fired boilers

By the end of 2014, Zhejiang Province had approximately 39,500 registered boilers of various types, accounting for 10% of the total number of boilers in use nationwide. Among these, 95% of the coal-fired industrial boilers were below 10 tons/hour, characterized by their large number, small capacity, and low energy efficiency. By the end of last year, the province had eliminated 3,353 boilers (kilns), fulfilling the national target.

Zhejiang Province has issued the "Notice on Further Strengthening the Elimination and Transformation of Coal-fired (Heavy Oil) Boilers (Kilns)," which provides comprehensive support for the elimination and transformation of boilers (kilns) in terms of policy, funding, pricing, and resources. By the end of June this year, the provincial government will establish a province-wide database of elimination information, similar to Zhuji, which will include the elimination and transformation methods and photos of coal-fired boilers before and after transformation, as the basis for assessment, acceptance, and subsidy issuance.

In 2017, Zhejiang Province's environmental protection department will actively promote the elimination and transformation of coal-fired boilers (kilns), focusing on four key aspects.

First, there is the entry barrier. Whether the emissions of pollutants such as sulfur dioxide and nitrogen oxides meet the total emission control requirements is a prerequisite for the environmental impact assessment approval of construction projects. Projects with heavily polluting fuel boilers of less than 20 tons/hour are not allowed to go through environmental impact assessment procedures.

Second, strengthen supervision and increase law enforcement inspections.

Third, we will force companies to shut down coal-fired boilers that fail to be phased out as required. If the concentration or total amount of pollutants emitted exceeds the standard, the pollution discharge fee will be doubled; if both exceed the standard, the pollution discharge fee will be tripled.

Fourth, strengthen the assessment process and enhance supervision of related work.

Guangxi www.yn-boiler.com

 Standards for Government Subsidies for the Renovation and Rectification of Small Coal-fired Boilers in Yulin Urban Area

Boiler dismantling and renovation targets in Guangxi: Coal-fired boilers with a capacity of 10 tons/hour or less within the built-up area;

The eligible recipients of subsidies for boiler renovation in Guangxi include: boilers that have been dismantled and deregistered, boilers that have been decommissioned and deregistered, coal-fired boilers that have been converted to natural gas, boilers that have been converted to centralized heating systems, coal-fired boilers that have been converted to oil-fired boilers (such as light diesel boilers, methanol boilers, and alcohol-based fuel boilers that use high-quality oil fuels), and boilers that use dedicated biomass briquettes (i.e., dedicated biomass boilers).

Note: Boilers that convert from coal to direct-fired biomass fuel will not be eligible for subsidies.

Guangxi Coal-fired Boiler Retrofit and Clean Energy Boiler Replacement Subsidy Scheme:

1. A subsidy of 10,000 yuan will be provided for every ton/hour of steam capacity of coal-fired steam boilers and coal-fired hot water boilers.

2. Adjustment coefficient: Based on the treatment method for small coal-fired boilers, two levels of coefficients are assigned:

(1) The coefficient for the demolition and cancellation method is 1;

(2) The coefficients for discontinuing and deregistering boilers, boilers converted from coal to gas, boilers converted from coal to electricity, coal-to-oil boilers, and coal-to-biomass briquette fuel boilers are 0.8.

The final government subsidy amount for the dismantling and renovation of coal-fired boilers is calculated by multiplying the basic standard by an adjustment coefficient.

Fujian Province www.yn-boiler.com

 Fujian Province's Energy-Saving and Environmentally Friendly Upgrading Plan for Coal-Fired Boilers and Subsidy Measures for Clean and Environmentally Friendly Boilers

Fujian's targets for coal-fired boiler retrofitting and clean energy boiler replacement:

By 2018, the average operating efficiency of coal-fired industrial boilers will increase by 6 percentage points compared to 2013, and 4,000 tons of high-efficiency boilers will be promoted; by 2017, the province will have fully completed the task of upgrading, transforming and eliminating coal-fired boilers.

1. Promote High-Efficiency Boilers: Selection and promotion of boilers should primarily be based on energy efficiency test results. New, renovated, and expanded fixed asset investment projects and government procurement projects should prioritize products listed in the high-efficiency boiler promotion catalog or those with an energy efficiency rating of Level 1. (For example, Zhengzhou Boiler's circulating fluidized bed boiler is ranked first in the National Development and Reform Commission's high-efficiency boiler promotion catalog.)

2. Strictly control access to new coal-fired boilers: New coal-fired boilers with a capacity of less than 20 tons per hour are prohibited in the built-up areas of all prefecture-level cities; in principle, no new coal-fired boilers with a capacity of less than 10 tons per hour should be built in other areas. New coal-fired boilers are prohibited in areas covered by centralized heating networks.

3. Accelerate the elimination of outdated boilers: Within the prohibited combustion zone, enterprises are prohibited from burning raw (loose) coal, honeycomb briquettes, coke, charcoal, coal gangue, coal slime, coal tar, heavy oil, residual oil, various combustible wastes, and directly burning unprocessed biomass and other high-polluting fuels, as well as diesel, kerosene, and manufactured gas with pollutant content exceeding national limits. (Built-type biomass pellet fuel boilers that meet standards, are not directly combusted, and can be newly built.)

4. Promote fuel structure adjustment: In areas where heating and gas pipelines cannot cover, large-scale high-efficiency coal-fired boilers or back-pressure thermal power units can be built to achieve centralized regional heating, or clean fuel boilers such as electric, biomass briquettes, and coal-water slurry can be used, or clean coal combustion technology can be adopted. After the transformation, energy conservation and environmental protection requirements should be met.

5. Various development zones and industrial clusters such as chemical, ceramic, printing and dyeing, papermaking, leather making, and pharmaceutical industries should accelerate the implementation of centralized heating transformation or clean energy substitution, so that the chemical industry can use chemical waste boilers, natural gas steam boilers for chemical plants, environmentally friendly gas boilers for paper mills, gas steam boilers for leather factories, and low-nitrogen gas boilers for pharmaceutical factories.

Fujian coal-fired boiler treatment funding subsidies:

For coal-fired boiler renovation projects with an annual energy saving of 500 tons of standard coal or more, a reward of 200 yuan per ton of standard coal will be given by the provincial energy conservation and circular economy special fund. The use of contract energy management and other methods to guide enterprises and social capital to increase investment and establish a market-based long-term mechanism for implementing boiler energy-saving technology renovations is encouraged.

Sichuan Province www.yn-boiler.com

★ Sichuan offers policy and financial subsidies for energy-saving upgrades and renovations of coal-fired boilers.

In 2017, promoting the clean transformation of coal-fired boilers was an unavoidable tough battle for Sichuan Province, which included the elimination and upgrading of 2,414 coal-fired boilers with a capacity of 10 tons or less. As of the end of July 2017, about 50% of these boilers had been completed.

The "Implementation Rules of the Action Plan for Air Pollution Prevention and Control in Sichuan Province" clearly require that "by 2017, urban built-up areas at the prefecture level and above should basically eliminate coal-fired boilers with a capacity of less than 10 tons per hour and prohibit the construction of new coal-fired boilers with a capacity of less than 20 tons per hour."

In response, Sichuan Province has introduced specific subsidies for the upgrading and transformation of coal-fired boilers, including "coal-to-gas" and "coal-to-biomass" conversions.

The government subsidy standards for upgrading coal-fired boilers to electricity are as follows: For boilers and kilns with a single capacity of 1-10 tons of steam per kiln that are converted to electricity, a subsidy of 30,000 yuan per ton of steam was provided in 2017 and 20,000 yuan per ton of steam per kiln in 2018, with a total subsidy amount of more than 30 million yuan.

A case study of boiler conversion at a cardboard packaging factory in Sichuan: A 4-ton coal-fired boiler consumes approximately 60 tons of coal daily. If the boiler is converted to gas, the 4-ton boiler only requires 75 cubic meters of natural gas to produce 1 ton of steam. Calculations of the operating costs of the 4-ton coal-fired steam boiler and the 4-ton low-NOx natural gas steam boiler show that the cost per square meter of cardboard is reduced by one cent.

Qinghai Province www.yn-boiler.com

 Latest government subsidy policy for boiler "coal-to-gas" conversion in Chengzhong District, Xining City, 2017

The goal of converting coal-fired boilers to gas-fired boilers:

Ensure that by September 30, 2017, the "coal-to-gas" conversion of 10 coal-fired boilers with a capacity of 4.29 tons per hour and individual small coal stoves within the area covered by the natural gas pipeline network in the coal-free zone is fully completed, eliminating the "black smoke" phenomenon within the coverage area of ​​the natural gas pipeline network in the urban area, and further improving the air quality of the urban environment.

Subsidy funds for the renovation of coal-fired boilers and the treatment of clean energy in Chengzhong District, Xining

1. The subsidy for "coal-to-gas conversion" only covers the basic costs of the "coal-to-gas" conversion, which mainly includes the construction costs of natural gas engineering (connection fees, branch pipeline network sharing fees, engineering construction fees, and design fees), and the purchase costs of the boiler body and auxiliary facilities.

If the renovation of the heating system incurs costs such as boiler room construction, internal heating pipeline renovation, circulation pump purchase, third-party gas connection coordination, special natural gas construction, and wall-mounted boilers for personal use, these costs will not be included in the scope of the renovation subsidy and should be borne by the construction unit or individual. For individual household heating, the subsidy will mainly cover the natural gas connection fee and the purchase cost of auxiliary facilities, with a specific subsidy standard of 3,000 yuan per household.

2. Subsidies for "coal-fired boilers to natural gas" conversion will be formulated according to the different nature of the conversion units, with priority given to impoverished communities, bankrupt enterprises, religious temples, and military units.

3. The district government must allocate corresponding governance subsidies in accordance with the city and district (county) ratio of 1:1 for the "coal-to-gas" governance subsidies within its jurisdiction, and ensure that the governance subsidies are used for their designated purposes and are fully in place.

4. For the new remediation tasks caused by the expansion of the coal-free zone and the extension of the natural gas pipeline network, the district will supplement the remediation subsidy fee according to the actual situation.

5. The subsidy standard will be calculated based on the actual rectification situation and the total steam tonnage of the boilers before and after rectification. If the total steam tonnage of the boilers after rectification is greater than that before rectification, the subsidy will be calculated based on the steam tonnage of the coal-fired boilers before rectification. If the total steam tonnage of the boilers after rectification is less than that before rectification, the subsidy will be calculated based on the steam tonnage of the gas-fired boilers after rectification. If the rectification results in individual household heating, the subsidy standard for individual household heating will be applied.

6. Units included in the "coal-to-gas" governance task in 2017, if they implement coal-to-electric boilers or solar heating equipment, and the renovation cost is higher than the "coal-to-gas" subsidy, the subsidy standard shall be followed; if the renovation cost is lower than the "coal-to-gas" subsidy, the subsidy shall be based on the actual renovation cost.

Tianjin Municipality www.yn-boiler.com

 Tianjin government special fund subsidy policy for boiler low-NOx combustion retrofit

Tianjin low-NOx boiler retrofit is a pollution control project in which boiler users effectively reduce the concentration of nitrogen oxide emissions by replacing low-NOx burners or replacing the entire gas boiler.

Scope of subsidies for low-NOx combustion in Tianjin boilers:

(1) Project units (including central, military, municipal, and district units) that were built and put into use before August 1, 2016 or whose environmental impact assessment documents were approved before August 1, 2016, and implemented low-nitrogen boiler retrofits, and whose nitrogen oxide emission concentration after retrofit reaches 80 mg/m³ or less, and are included in the scope of central special fund subsidies, can apply for subsidies.

(2) All project units (including central, military, municipal and district units) within the city’s jurisdiction that implement low-NOx boiler retrofitting and whose NOx emission concentration reaches 30 mg/m³ or less after retrofitting, and are included in the scope of central special fund subsidies, can apply for subsidies.

Tianjin Low-NOx Gas Boiler Retrofit Subsidy Standard

For low-NOx retrofit projects of gas-fired boilers, the subsidy amount for a single project shall not exceed the approved total investment of the project, and the subsidy standard is as follows:

(i) Projects that are retrofitted by replacing the burner with a low-NOx burner, resulting in a NOx emission concentration of less than or equal to 30 mg/m³.

1. For boilers with a capacity of 1 ton of steam or less: Subsidy (ten thousand yuan) = 5.5 × Boiler capacity (tons of steam)

2. For single boilers with a capacity greater than 1 ton of steam and less than or equal to 4 tons of steam: Subsidy (ten thousand yuan) = 2 × Boiler capacity (tons of steam) + 3.5

3. For single boilers with a capacity greater than 4 tons of steam and less than or equal to 20 tons of steam: Subsidy (ten thousand yuan) = 1.5 × Boiler capacity (tons of steam) + 6

4. For a single boiler with a capacity greater than 20 tons of steam: Subsidy (ten thousand yuan) = 1.8 × Boiler capacity (tons of steam)

(ii) Projects that have been retrofitted by replacing the burners with low-NOx burners, resulting in NOx emission concentrations of 30-80 mg/m³.

1. For a single boiler with a capacity of 1 ton of steam or less: Subsidy (ten thousand yuan) = 2.7 × Boiler capacity (tons of steam)

2. For single boilers with a capacity greater than 1 ton of steam and less than or equal to 4 tons of steam: Subsidy (ten thousand yuan) = 1.2 × Boiler capacity (tons of steam) + 1.5

3. For single boilers with a capacity greater than 4 tons of steam and less than or equal to 20 tons of steam: Subsidy (ten thousand yuan) = 1.0 × Boiler capacity (tons of steam) + 2.5

4. For a single boiler with a capacity greater than 20 tons of steam: Subsidy (ten thousand yuan) = 1.2 × Boiler capacity (tons of steam)

(iii) Projects where the nitrogen oxide emission concentration is less than or equal to 30 mg/m³ through complete boiler replacement (including modular boilers).

1. For a single boiler with a capacity of 1 ton of steam or less: Subsidy (ten thousand yuan) = 9.6 × Boiler capacity (tons of steam)

2. For single boilers with a capacity greater than 1 ton of steam and less than or equal to 4 tons of steam: Subsidy (ten thousand yuan) = 2.6 × Boiler capacity (tons of steam) + 7

3. For single boilers with a capacity greater than 4 tons of steam and less than or equal to 20 tons of steam: Subsidy (ten thousand yuan) = 2.5 × Boiler capacity (tons of steam) + 8

4. For a single boiler with a capacity greater than 20 steam tons: Subsidy (ten thousand yuan) = 2.9 × Boiler capacity (steam tons)

(iv) Projects that achieve nitrogen oxide emission concentrations of 30-80 mg/m³ by replacing the entire boiler (including modular gas-fired boilers).

1. For a single boiler with a capacity of 1 ton of steam or less: Subsidy (ten thousand yuan) = 4.6 × Boiler capacity (tons of steam)

2. For single boilers with a capacity greater than 1 ton of steam and less than or equal to 4 tons of steam: Subsidy (ten thousand yuan) = 1.6 × Boiler capacity (tons of steam) + 3

3. For single boilers with a capacity of 4 tons of steam per unit and 20 tons of steam per unit: Subsidy (ten thousand yuan) = 1.5 × Boiler capacity (tons of steam per unit) + 4

4. For a single boiler with a capacity greater than 20 tons of steam: Subsidy (ten thousand yuan) = 1.7 × Boiler capacity (tons of steam)

Note: (1) This boiler subsidy method does not support project units to carry out low-NOx retrofit by adopting end-of-pipe denitrification alone. If the project unit adopts the method of replacing low-NOx burners or replacing the gas boiler as a whole, and at the same time adopts end-of-pipe denitrification, the subsidy standard shall be implemented with reference to the method of replacing low-NOx burners or replacing the gas boiler as a whole.

(2) When verifying the subsidy funds, the number of boilers and the capacity of each boiler before and after the boiler room renovation should be substituted into the subsidy fund formula for calculation, and the lower value of the calculation result should be used to verify the subsidy funds.

Hainan Province www.yn-boiler.com

★ Hainan's project funding subsidy policy for converting coal-fired boilers into clean energy and environmentally friendly boiler equipment

The Hainan coal-fired boiler dismantling and renovation subsidy applies to boilers that are converted to clean energy sources such as natural gas or biomass briquettes. The original coal-fired boilers used for the conversion must be registered with the regulatory authorities, be in use, and meet emission standards after the conversion.

Subsidy for clean energy replacement of coal-fired boilers: 30,000 yuan per ton of steam generated, based on the original tonnage of the coal-fired boiler.

Note: Hainan Province will also provide certain rewards to exemplary energy-saving public institutions that have passed the acceptance inspection, based on their national or provincial level and the amount of funds invested.

Heilongjiang Province www.yn-boiler.com

 Harbin City's 2017 Management Measures for Subsidies from Fiscal Funds for the Dismantling, Merging, and Eliminating Small Coal-fired Boilers and Promoting Clean Energy Use

1. Scope and Recipients of Funding Subsidies

(I) The existing coal-fired small boilers with a capacity of 10 tons/hour or less in the built-up areas and industrial parks of the six main urban districts of Harbin (excluding Hulan, Acheng and Shuangcheng districts) shall be phased out within the time limit of 2017. Heating units or boiler owners (excluding government-funded and provincial units) shall carry out the dismantling and grid connection, clean energy transformation and abandonment and demolition projects.

(II) For small coal-fired boilers with a capacity of 10 tons/hour or less currently in operation in the built-up areas and industrial parks of Hulan, Acheng and Shuangcheng districts, as well as small coal-fired boilers with a capacity of 10-20 tons/hour (inclusive) currently in operation in the built-up areas and industrial parks of Harbin city (9 districts), the heating units or boiler owners (excluding those supported by the government and provincial units) that are to be eliminated in 2017 and undergo dismantling and grid connection, clean energy transformation, or abandonment and demolition projects will receive subsidies in accordance with this method.

2. Subsidy Standards

(a) Central heating grid connection subsidy standards

For small coal-fired boilers used for residential and mixed residential/non-residential heating, a subsidy of 50 yuan per square meter (building area) will be provided based on the actual heating area. Heating companies implementing network connection projects are prohibited from charging residents any other connection fees.

(ii) Adopting clean energy subsidy standards

1. For the replacement of small coal-fired boilers with clean fuels such as natural gas and liquefied petroleum gas that meet emission standards by adopting low-NOx combustion technology, a subsidy of RMB 120,000 per ton of steam will be provided based on the tonnage of the newly built boiler.

2. For those who replace small coal-fired boilers with electric boilers, a subsidy of 360,000 yuan per ton of steam will be provided based on the tonnage of the newly built boiler.

3. For those who replace small coal-fired boilers with other clean or renewable energy alternatives such as electric heating film, heat pump, and solar energy, a subsidy of 36 yuan per square meter (building area) will be provided based on their actual heating area.

3. Subsidy Standards for Eliminating Coal-fired Boilers

Industrial and commercial enterprises that dismantle their existing non-heating coal-fired boilers and do not install new boilers will receive a subsidy of 28,000 yuan per ton of steam, based on the tonnage of the dismantled boiler.

The Ili Prefecture has initiated legal procedures to deregister the operating certificates of 320 coal-fired boilers with a capacity of 10 tons per hour or less.

 

      On March 29, reporters learned from the Ili Prefecture Bureau of Quality and Technical Supervision that, effective immediately, the Ili Prefecture has initiated legal procedures to cancel the registration certificates of 320 coal-fired boilers with a capacity of 10 tons per hour or less. This signifies that the special campaign to rectify coal-fired boilers with a capacity of 10 tons per hour or less in the prefecture has entered a new phase, and these small boilers will disappear from the sight of the people of Ili.

      To effectively advance air pollution prevention and control, improve air quality in the prefecture, and earnestly implement the feedback and rectification measures from the Eighth Central Environmental Protection Inspection Team, the Prefectural Bureau of Quality and Technical Supervision has decided to revoke the registration certificates for 320 coal-fired boilers with a capacity of 10 tons per hour or less within the prefecture's jurisdiction. All units using these coal-fired boilers are prohibited from using them, and boiler inspection and testing institutions are prohibited from conducting supervisory inspections or periodic inspections of these boilers. Violations of these regulations will be punished according to the relevant provisions of the Special Equipment Safety Law, with fines of 200,000 yuan and 300,000 yuan respectively for the inspection institutions and the user units.

      The head of the Ili Prefecture Quality and Technical Supervision Bureau stated that the rectification of coal-fired boilers is absolutely necessary and a good remedy for air pollution control. Next, the autonomous prefecture will adhere to the principles of full coverage and zero tolerance, and with greater力度 (intensity), stronger determination, and more robust measures, thoroughly promote the rectification, prevent any blind spots, and completely eliminate coal-fired boilers with a capacity of 10 tons per hour or less. (Ili News Network)

 
 
 
 

Service Guarantee

 

I. Comprehensive Quality Assurance System
1. Our company has passed ISO9001 quality system certification and possesses a comprehensive quality assurance system, ensuring that our products meet international quality standards in design, manufacturing, production, and installation.
II. Quality Assurance Measures
1. We strictly adhere to the "Safety Technical Supervision Regulations for Organic Heat Carrier Furnaces," GB/T17410-1998 "Organic Heat Carrier Furnaces," and "General Technical Conditions for Industrial Boilers" standards in production and manufacturing to ensure process quality. During boiler manufacturing, each process has a quality tracking supervisor to monitor the entire process. The boiler inspection department has dedicated resident supervisors who strictly control each process and conduct random inspections of key components.
2. Modern large-scale equipment (such as large presses, plate rolling machines, CNC welding machines, cutting machines, X-ray flaw detectors, etc.) ensures the manufacturing quality of our products. Special components have special process tooling to ensure the manufacturing quality of these special components. During the manufacturing process, multiple testing measures are implemented, including physical and chemical tests, flaw detection tests, metallographic tests, and tensile tests, to effectively guarantee boiler quality at every stage, including technology, inspection, and supervision.
3. High-quality and efficient boiler auxiliary equipment and electrical control systems are selected to ensure safe and efficient boiler operation.
III. Strong Technical Strength
The company has a national-level standard technology development center, led by senior engineers, which deeply strengthens computer-aided design, enhancing the entire process from scheme to design, to process, to manufacturing, greatly improving the technical content and reliability of the products.
IV. Excellent Service Guarantee System
1. Pre-sales technical consultation and in-sales technical guidance are provided.
2. The company also has a dedicated after-sales service department, guaranteeing to arrive at the site within 24 hours of receiving a user's call to handle boiler malfunctions and provide high-quality and efficient after-sales service.
V. Service Policy

Design : Professional and Sincere

Production : First-class, meticulous

Quality Inspection : Rigorous, Reliable

Professional design team combining concepts and practice

The core technology originates from Germany and is safe and reliable.

Rigorous selection of raw materials, world-class components

Safety first, efficiency improved, and quality superior.

Standardized management and rigorous processes

Imported components, from top-tier manufacturers

First-class production lines, first-class technicians

Professional manufacturing, professional customization

Complete testing process

Strict execution process

Comprehensive quality control procedures

Strictly control the process and do not relax.

Pre-sales : Professional and sincere

During the sales process : meticulous and dedicated.

After-sales service : Fast and reliable.

Communicate with professional technicians

Fully understand customer needs

Professional selection and guidance.

Communicate thoroughly and determine the model.

Standardized procedures, rigorous contracts

Professional customization, serving users

Timely delivery, logistics reaching all corners of the world.

Real-time tracking, safe and accurate.

24- hour customer service with fast response

Professional customer service provides professional answers.

One-year warranty and lifetime maintenance

Rest assured, we are at ease.

Integrity is the foundation, excellence is the goal.

Our strategy: Winning through quality.

Our mission: Customer satisfaction.

VI. Company Advantages
• Company Accumulation: Long history, dating back to 1980 , specializing in the design and manufacture of boiler products.
• Manufacturing Capabilities: [ A- level] Boiler Manufacturing Qualification, [ A2- level] Pressure Vessel Manufacturing Qualification
. • Product Quality: ISO9001 certified, standardized integrated R&D, procurement, production, and sales, with quality as the goal.
• Company Performance: Annual sales of over 2,000 units, distributed throughout China and exported overseas.
• Product Guarantee: Professional design, production, and after-sales team, with customer satisfaction as the ultimate goal.
• Production Scale: Two branch offices, three production plants, covering an area of ​​300 acres .
• Corporate Responsibility: ISO14001 certified, low-nitrogen and environmentally friendly, energy-saving and reliable, safe to use.

 
 
 
 

Steam boiler management instructions and the necessity of routine inspections

 

    Steam boilers are among the products featured on this website, so it's essential to familiarize yourself with them to use them correctly and effectively, achieving optimal results and maximizing their benefits. To achieve this, we will continue our study of steam boilers in a question-and-answer format.

  1. Is the management of steam boilers relatively strict?

    Steam boilers operate at pressures ranging from 0.1 to several hundred MPa and output steam. The management of these boilers is very strict, with numerous mandatory and annual inspections. Therefore, the answer to this question is yes. Furthermore, the relevant regulations must be strictly enforced.

  2. Should the steam boiler be inspected regularly?

    Regular inspections of steam boilers are essential and must be taken seriously to ensure their safe and normal operation, preventing any dangers or accidents. The inspections include checking the boiler's pressure, water level, temperature, and combustion status to ensure they are normal and free of abnormalities, while simultaneously controlling the boiler's operational status.

  3. Can the steam boiler be descaled online? Is it necessary to use seamless steel pipes? Furthermore, if this boiler is used for heating, are any additional devices or equipment required?

    Steam boilers can be descaled online using a specialized boiler descaling agent without requiring a shutdown. Seamless steel pipes are not always necessary; the choice depends on the boiler pressure. Furthermore, using a steam boiler for heating requires additional equipment, specifically a heat exchanger.

What is an electric hot water boiler and a comparison of rust removal methods for different hot water boilers?

 

    Hot water boilers are a type of boiler that we are already very familiar with, not only because of their wide application, but also because we have been continuously working on learning about them on this website to help everyone become familiar with and understand this type of boiler. Therefore, to achieve this goal, we will continue to explain relevant knowledge below.

  1. Is an electric hot water boiler a type of hot water boiler? What exactly is it?

   From a professional perspective, electric hot water boilers belong to the broad category of hot water boilers. They are also known as electric heating boilers, electric warming boilers, electric bathing boilers, and electric bathtub boilers, among other names. This type of boiler uses electric heating technology and a control system to produce hot water to meet heating or hot water supply needs.

 2. Is there a difference in rust removal between large and small boilers?

   There are several methods for derusting hot water boilers. If caustic soda (sodium hydroxide) is used, it must be heated and pressurized, and maintained for a certain period before the wastewater can be discharged. Furthermore, the time requirement varies depending on the size of the hot water boiler; 24 hours for small boilers and 36 hours or more for large boilers .

  3. In a pressurized hot water boiler, is the circulating pump controlled by the boiler's control cabinet, or is a separate control cabinet required? Also, what is the heat output of a 6- ton hot water boiler?

    In pressurized hot water boilers, the circulating pump typically uses the boiler's control cabinet, rather than a separate control cabinet, unless there are special requirements. A 6- ton hot water boiler has a heat output of 1.8 million kcal/h . However, this is a theoretical value and may deviate in actual operation. Therefore, this should be noted.

 
 
 
 

Steam boiler operation involves several major steps.

 

  I. Inspection and Preparation Before Boiler Start-up.
  1.1 Check that all manhole covers and handhole covers of the steam boiler are installed correctly. Ensure all flange seals are tightened, and that all temporary baffles and other temporary plugs at the flanges are removed.
  1.2 Clean all accumulated ash and debris from the boiler furnace and flue. Ensure all regulating valves and dampers in the air ducts and flue are intact, airtight, and operate smoothly with accurate opening/closing indications. After inspection, close the main flue damper of the economizer and open the bypass flue damper. If there is no bypass flue, open the economizer recirculation pipe valve.
  1.3 The boiler's external furnace walls should be intact and airtight. All furnace doors, ash doors, observation doors, and inspection doors should be complete, intact, and tightly closed.
  1.4 Check that safety accessories are in good condition and that cocks rotate smoothly and effectively. All instruments and control devices should be complete, intact, and clean, and the water level gauge lighting should be in good working order. After passing inspection, ensure the water level gauge and pressure gauge cocks are in working condition.
  1.5 The handwheels of valves on all boiler pipelines should be intact, operate smoothly, and have adequate sealing packing. After inspection and approval, open all drain valves on the steam pipeline and valves on the feedwater pipeline.
  1.6 Check that the combustion device is intact. Test the mechanical transmission, coal conveying, and slag removal systems to ensure they are functioning normally. The speed control box safety spring should be properly tightened and well-lubricated. The coal gate should rise and fall smoothly, and the coal gate scale should indicate correctly. The eagle iron should be neat and intact, and the slag-tumbling plate should be complete and operate smoothly.
  1.7 Check that the couplings of auxiliary equipment (induced draft fan, blower, water pump, etc.) are securely connected, the V-belts should be properly tensioned, the lubricating oil should be good and sufficient, and the cooling water should flow smoothly. After inspection and approval, install the safety guards and conduct trial runs, paying attention to the current during idling. The ash discharge port of the dust removal device should be tightly sealed to prevent air leakage.
  1.8 After the boiler meets the operating requirements, water can be introduced. When filling with water, the air valve on the boiler drum should be opened. Water filling should be slow, and the water temperature should not exceed 90℃, and should be below 50℃ in winter. During water filling, check the manhole, handholes, and valves and flanges for leaks; if any are found, stop filling and address the issue. When the water reaches the lowest level in the water level gauge, stop filling. At this point, the water level in the gauge should remain constant. Otherwise, investigate the cause and take steps to eliminate it.
  Steam Boiler Operating Procedures II: Boiler Ignition and Pressure Increase
  2.1 Ignition
  2.1.1 Before ignition, open the boiler's flue gas damper and allow natural ventilation for about 10 minutes; if mechanical ventilation is used, allow about 5 minutes to remove any accumulated combustible gases from the flue and furnace.
  2.1.2 For boilers equipped with economizers, open the bypass flue damper or the economizer recirculation valve.
  2.1.3 Open the natural ventilation door to an appropriate extent, then ignite the fire with firewood and other flammable materials. It is strictly forbidden to use highly volatile oils for ignition.
  2.1.4 The ignition speed should not be too fast. From cold furnace ignition to the start of pressure build-up, generally, boilers with an evaporation capacity of less than 2 tons/hour should take no less than 1 hour; boilers with an evaporation capacity of 2-4 tons/hour should take no less than 1.5 hours; and boilers with an evaporation capacity of 6.5-10 tons/hour should take no less than 3 hours.
  2.1.5 After ignition, close monitoring of boiler hydration is essential.
  2.2 Pressure Increase
  2.2.1 When the air valve begins to emit a large amount of steam, it can be closed.
  2.2.2 When the steam pressure rises by 0.05-0.1 MPa, the water level gauge should be flushed. After flushing, the water level gauge should be compared with another water level gauge on the boiler. If the water level gauge is inconsistent before and after flushing, it should be flushed again.
  2.2.3 When the steam pressure rises to 0.1-0.15 MPa, the pressure gauge and its water inlet pipe must be flushed. After flushing, the pressure should be compared with another pressure gauge; the indicated pressure should be consistent.
  2.2.4 When the steam pressure rises to 0.2-0.3 MPa, perform the following:
  a. Test the water injection device, steam pump, electric pump, and other water supply equipment to introduce water into the boiler and observe their functionality.
  b. Perform blowdown sequentially, checking the blowdown valve for flexibility and tightness, and assisting boiler water circulation by releasing boiler water. Observe the water level during blowdown.
  c. For newly installed or repaired boilers, retighten the manhole and handhole covers. When tightening, do not extend the handle, and do not use excessive force.
  2.2.5 When the pressure reaches the working pressure, verify the sensitivity, effectiveness, and accuracy of the safety valve.
  Steam boilers have inherent risks; therefore, regular inspections are essential during use to eliminate potential safety hazards.

 
 
 
 

What are the maintenance and upkeep items for condensing boilers?

 

Condensing boilers are industrial equipment that utilizes flue gas heat recovery technology. Compared to traditional boilers, they not only save energy but are also more environmentally friendly, effectively reducing emissions. Regular maintenance is essential after use to extend the boiler's lifespan and improve its overall performance. So, what maintenance precautions should be taken when using a high-quality, fully functional condensing boiler?

(1) Regular inspection. Since condensing boilers are relatively large and high-consumption industrial equipment, in order to avoid malfunctions during use that could affect work or cause danger, operators should conduct a comprehensive inspection and maintenance of the condensing boiler every once in a while. That is, operators should conduct a comprehensive and detailed inspection of the steam valves, power valves, and water outlets of the equipment.

(2) Regularly apply oil. Since condensing boilers need to operate under high-load water supply for a long time, in order to avoid the equipment from being unable to operate due to friction and water erosion, people should pay attention to regularly applying lubricating oil to the parts of the equipment so as to reduce the operating resistance and increase the operating speed of each part of the equipment during operation.

(3) Regular maintenance. In order to avoid serious wear and tear on the condensing boiler during long-term use, people should regularly maintain and repair the equipment. For example, some severely worn parts should be repaired or replaced with new parts. At the same time, loose screws should be tightened and rusted parts should be repaired.

The above content outlines the key maintenance points to note when using a fully functional, high-quality condensing boiler. Regularly inspecting, lubricating, and repairing all components of the equipment can effectively reduce equipment malfunctions that could disrupt normal operation and significantly improve the overall performance of the high-quality, low-priced steam boiler.

 
 
 
 
Measures to prevent sudden flameout of gas-fired thermal oil heaters
 

    If a flameout occurs due to a blower malfunction, all valves on the fuel supply line should be promptly closed, paying particular attention to prevent fuel leakage due to loose valve closures. The furnace and flue should be ventilated and purged according to the emergency shutdown procedure. Combustion can resume as scheduled after the blower is restarted. If a single burner fails to flame out, simply close the fuel supply valve for that burner, partially close the burner's damper, identify and rectify the defect, and then restart combustion according to the established procedure.

   For gas-fired thermal oil heaters, the possibility of water ingress during fuel transportation, storage, and loading/unloading should be minimized. Oil tanks should have dehydration procedures and be dehydrated regularly. Under all circumstances, the safety of the fuel supply must be ensured. The supplied fuel should be inspected and tested to ensure proper control over any changes in fuel type.

   When there are significant changes in the type of oil, a mixing experiment is required to determine whether the incoming oil and the original oil stored in the tank can be stored together. This is to avoid mixing oils with vastly different densities and viscosities, which could decompose into many insoluble substances and clog the oil supply pipeline. Regarding the operation of gas-fired thermal oil heaters, changes in the gas supply pressure must be closely monitored, and any abnormalities should be addressed promptly to ensure that the gas supply pressure remains within the normal operating range.

    After a gas-fired thermal oil heater is shut down, care must be taken to prevent a furnace explosion. The fuel supply to the heater must be immediately cut off by closing the gas supply solenoid valve and then closing the fuel supply valves for each burner. Actions must be taken quickly to prevent a furnace explosion from occurring if fuel supply is resumed or restored.

 Therefore, it is evident that the sudden shutdown of a gas-fired thermal oil heater is very dangerous. Consequently, it is essential to regularly inspect the gas-fired thermal oil heater to ensure its normal operation and prevent accidents from occurring.

Measures to prevent sudden flameout of gas-fired thermal oil heaters
 

    If a flameout occurs due to a blower malfunction, all valves on the fuel supply line should be promptly closed, paying particular attention to prevent fuel leakage due to loose valve closures. The furnace and flue should be ventilated and purged according to the emergency shutdown procedure. Combustion can resume as scheduled after the blower is restarted. If a single burner fails to flame out, simply close the fuel supply valve for that burner, partially close the burner's damper, identify and rectify the defect, and then restart combustion according to the established procedure.

   For gas-fired thermal oil heaters, the possibility of water ingress during fuel transportation, storage, and loading/unloading should be minimized. Oil tanks should have dehydration procedures and be dehydrated regularly. Under all circumstances, the safety of the fuel supply must be ensured. The supplied fuel should be inspected and tested to ensure proper control over any changes in fuel type.

   When there are significant changes in the type of oil, a mixing experiment is required to determine whether the incoming oil and the original oil stored in the tank can be stored together. This is to avoid mixing oils with vastly different densities and viscosities, which could decompose into many insoluble substances and clog the oil supply pipeline. Regarding the operation of gas-fired thermal oil heaters, changes in the gas supply pressure must be closely monitored, and any abnormalities should be addressed promptly to ensure that the gas supply pressure remains within the normal operating range.

    After a gas-fired thermal oil heater is shut down, care must be taken to prevent a furnace explosion. The fuel supply to the heater must be immediately cut off by closing the gas supply solenoid valve and then closing the fuel supply valves for each burner. Actions must be taken quickly to prevent a furnace explosion from occurring if fuel supply is resumed or restored.

 Therefore, it is evident that the sudden shutdown of a gas-fired thermal oil heater is very dangerous. Consequently, it is essential to regularly inspect the gas-fired thermal oil heater to ensure its normal operation and prevent accidents from occurring.

Analysis and summary of the causes of the explosion in the thermal oil furnace
 

 Here is a summary of the causes of explosions in thermal oil heaters (organic heat carrier heaters), including coal-fired, oil-fired, and gas-fired thermal oil heaters, and prevention methods, so that we can learn from them:

1) Explosion caused by defects in the thermal oil heater

An explosion caused by a defect refers to a situation where the pressure on the boiler does not exceed the extra pressure, but due to cracks, severe deformation, corrosion, or structural changes in the boiler's primary pressure-bearing components, the primary pressure-bearing components lose their load-bearing capacity and suddenly rupture and explode over a large area.

Explosions caused by defects are also a common type of boiler explosion. To prevent such explosions, in addition to strengthening quality control and safety supervision in boiler design, manufacturing, equipment, and operation, it is also necessary to strengthen boiler inspection, promptly address any defects found, and prevent the boiler's main pressure-bearing components from operating with defects.

2) Steam explosion

Large components in a thermal oil boiler that contain significant amounts of water and steam, such as the boiler drum and water-cooled wall headers, may be in a state of fullness with both water and steam phases coexisting during normal operation, or they may be completely filled with water. The pressure inside the container is equal to or close to the boiler's operating pressure, and the water temperature is the fullness temperature corresponding to that pressure. If this container ruptures, the pressure on the liquid surface instantly drops to atmospheric pressure, and the fullness temperature of water corresponding to atmospheric pressure is 100°C. The fullness water, which was above 100°C at the original operating pressure, now becomes extremely unstable and difficult to exist under atmospheric pressure—a portion of which instantly vaporizes, its volume suddenly expanding many times over, causing an explosion in the space surrounding the container.

3) Severe water shortage caused the explosion

The primary pressure-bearing components of a thermal oil boiler, such as the boiler drum, end caps, tube sheet, and furnace lining, are often directly heated by the flame. If the boiler experiences a severe water shortage...

The aforementioned primary pressure-bearing components, if not properly cooled, may even burn, causing a rapid rise in metal temperature and even red-hot. In such a water-deficient condition, adding water is impossible, and the boiler should be shut down immediately. Adding water to a severely water-deficient boiler generally results in an explosion. Boilers that have been dry-burning for an extended period without water will also explode.

The primary way to prevent these types of explosions is to strengthen operational procedures.

4) Overpressure explosion refers to a boiler explosion caused by reasons such as incomplete, damaged or incorrectly installed safety valves or pressure gauges, operators leaving their posts or neglecting their supervisory responsibilities, closing or partially closing the steam outlet passage, or converting a boiler without pressure-bearing capacity into a pressurized steam boiler. These reasons result in the pressure on the main pressure-bearing components of the boiler, such as the boiler body, end caps, tube sheet, and furnace, exceeding their bearing capacity.

Overpressure explosions are one of the most common types of explosions in small boilers. The primary method to prevent these explosions is to strengthen work procedures.

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