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Implemented on January 1, 2023! Four national emission standards of air pollutants, including Emission Standard of Air Pollutants for Printing Industry, were issued


Time:

2022-11-21

The Ministry of Ecology and Environment issued four national air pollutant emission standards, including the Emission Standard of Air Pollutants for Printing Industry, which will be implemented from January 1, 2023.

Recently, the Ministry of Ecology and Environment approved four standards including the Emission Standard of Air Pollutants for Printing Industry as the national emission standard of air pollutants, which were jointly issued by the Ministry of Ecology and Environment and the State Administration of Market Supervision and Administration.

 

The standard name and number are as follows:

1、 Emission Standard of Air Pollutants for Printing Industry (GB 41616-2022);

2、 Emission Standard of Air Pollutants for Glass Industry (GB 26453-2022);

3、 Emission Standard of Air Pollutants for Mineral Wool Industry (GB 41617-2022);

4、 Emission Standard of Air Pollutants for Lime and Calcium Carbide Industries (GB 41618-2022).

 

According to relevant laws and regulations, the above standards have the force of enforcement.

The above standards will be implemented as of January 1, 2023.

 

01 Interpretation of Emission Standard of Air Pollutants for Printing Industry (GB 41616-2022)

1、 What is the background of the standard?

The Opinions of the Central Committee of the Communist Party of China and the State Council on Deepening the Battle of Pollution Prevention clearly pointed out that during the "Fourteenth Five Year Plan" period, we should vigorously strengthen the coordinated control of fine particulate matter (PM2.5) and ozone. Volatile organic compounds (VOCs) are important precursors for the formation of PM2.5 and ozone, and some VOCs are toxic substances and malodorous substances, which are binding indicators of the "Fourteenth Five Year Plan". Printing industry is an important industry of VOCs emission. The overall scale of China's printing industry ranks second in the world, with nearly 100000 enterprises and a total output value of 1.4 trillion yuan. At present, the management of air pollutant emission in the printing industry is implemented in accordance with the Integrated Emission Standard of Air Pollutants (GB 16297-1996) and the Control Standard for the Unorganized Emission of Volatile Organic Compounds (GB 37822-2019). The industry is not targeted, and the requirements for organized emission control are loose, which cannot support the current demand of China for the control of industrial VOCs in the whole process. It is urgent to formulate special industry standards to implement precise, scientific Further standardize the management of industrial pollution discharge according to the requirements of pollution control according to law.

2、 What are the characteristics of this standard in terms of emission control?
This standard is based on the whole process management and control idea from source reduction, process control to end treatment. Organized emission and unorganized emission control work together to further regulate the emission behavior of printing enterprises.
(1) Strengthen source and process control and standardize unorganized emission management
The unorganized emission control is the difficulty of VOCs control in the printing industry. According to the process characteristics, the standard specifies the requirements for the measurement control of the storage, transfer and transportation of VOCs such as ink, thinner, fountain solution, adhesive, and other processes before printing, printing, and after printing. In addition, this standard proposes the recommended concentration limits for monitoring VOCs in the plant area, which will be independently implemented by the local government according to the needs of local environmental protection to monitor the unorganized emissions in the plant area. Through the above control measures, the whole process control of unorganized emission is realized.
(2) Implement concentration and total amount control and improve organized emission control
The air pollutants generated in the printing production process are mainly VOCs and particulates, of which the amount of particulates is small. VOCs are the main pollutants, and most of them are toxic substances. In order to comprehensively control the emission of air pollutants from the printing industry and at the same time simplify the pollutant control project as much as possible, the form of "comprehensive indicators+characteristic pollutants" is adopted to ensure the strictness of emission supervision. The comprehensive index is non methane hydrocarbon (NMHC), which controls the total emission of VOCs. The project of characteristic pollutants highlights the key points, considers photochemical reactivity and toxicity, and controls benzene and benzene analogues.
The standard adopts the emission concentration limit control method, while further implementing differentiated control according to the initial emissions of the enterprise. For enterprises with large emissions, the dual control of emission concentration and removal efficiency shall be implemented; For enterprises with small emissions, they only need to meet the requirements of concentration indicators. In addition, enterprises that use raw and auxiliary materials in line with the national regulations on low VOCs content products do not implement the requirements for treatment efficiency, and enterprises are encouraged to use water-based ink and other source measures to reduce total emissions.

3、 How feasible is the implementation of the standard?
In recent years, Beijing Tianjin Hebei and its surrounding regions, the Yangtze River Delta, the Pearl River Delta and other regions have issued relevant local standards. Printing enterprises in the region have taken the lead in upgrading process equipment and environmental protection facilities, accumulating mature cases of up to standard technologies, laying a technical foundation for the implementation of standards. The industry association and relevant experts agreed that this standard can reflect the industry's concerns, has strong guidance and operability, and is eager to issue the standard. At present, publication printing enterprises can achieve emission standards through source prevention technologies such as replacement of raw and auxiliary materials, without further upgrading; Some packaging and printing enterprises need to implement standard transformation according to their own conditions, which will correspondingly increase production costs, but will not have a contraction effect on supply or demand, and is at an acceptable level in the industry. In the process of standard formulation, we have solicited public opinions and fully communicated with industry associations and relevant enterprises. The market has expected that relevant enterprises have begun to prepare for transformation. The existing enterprises will implement the standard from July 1, 2024, giving them sufficient time for upgrading.

4、 What are the environmental and social benefits of standard implementation?
The implementation of this standard has good environmental benefits, can effectively reduce toxic and harmful substances discharged into the environment, is conducive to protecting the health of the surrounding public, has a positive role in improving ambient air quality, and meets the public's demand for a good ecological environment. The implementation of this standard will further promote fair competition in the industry, effectively solve the problem of "bad money drives out good money", and help to establish a more fair and orderly market environment. At the same time, it will guide printing industry enterprises to adopt source, process and end treatment measures to reduce organic waste gas emissions and promote green development of the industry.

 

 

02 Interpretation of Emission Standard of Air Pollutants for Glass Industry (GB 26453-2022)
 

1、 What is the background of the standard?
The Opinions of the Central Committee of the Communist Party of China and the State Council on Deepening the Battle of Pollution Prevention clearly pointed out that during the "Fourteenth Five Year Plan" period, we should vigorously strengthen the coordinated control of fine particulate matter (PM2.5) and ozone pollution, and promote the coordinated emission reduction of nitrogen oxides (NOx) and volatile organic compounds (VOCs). Glass industry is an important emission industry of NOx, particulate matter and other pollutants. China is a large glass producer. In 2021, the output of flat glass, daily glass products, glass packaging containers and glass fiber yarn will account for 50%, 30% and 65% of the global total output. The glass industry has not yet formulated a unified national industrial air pollutant emission standard. Among them, the emission of air pollutants from daily use glass and glass fiber industry shall comply with the Emission Standard of Air Pollutants for Industrial Furnaces (GB 9078-1996), the Integrated Emission Standard of Air Pollutants (GB 16297-1996) and the Control Standard for Unorganized Emission of Volatile Organic Compounds (GB 37822-2019). The emission of air pollutants from flat glass shall comply with the Emission Standard of Air Pollutants for Flat Glass Industry (GB 26453-2011), and the emission of air pollutants from electronic glass shall comply with the Emission Standard of Air Pollutants for Electronic Glass Industry (GB 29495-2013). The existing problems in the above standards are: firstly, the pollution control items are incomplete, such as NOx emission from glass and glass fiber furnaces for daily use, but no NOx emission control requirements are specified in the Emission Standard of Air Pollutants for Industrial Furnaces (GB 9078-1996); Second, some emission limits are loose, which does not match the current air pollution control technology; Third, there is no more effective source and process control requirements, which cannot meet the current environmental management needs.
In order to further standardize the management of pollutant discharge in the glass industry, supplement the shortcomings of emission standards in key industries of industrial furnaces and kilns, and provide support for deepening the battle against pollution, it is necessary to integrate the standards and uniformly formulate the emission standards of air pollutants in the glass industry.
 

2、 What are the characteristics of this standard in terms of emission control?
This standard is based on the principle of precise and scientific pollution control, pollution reduction and carbon reduction, and synergistic efficiency. It implements the collaborative emission reduction and governance of air pollutants and greenhouse gases, and strengthens the whole process collaborative emission control focusing on source emission reduction and process control.
(1) Strengthen unorganized emission source and process control
The unorganized emission is a difficult point in the emission control of air pollutants. For the unorganized emission of particulate matter, this standard comprehensively considers the material properties and process equipment level of the glass industry, and puts forward targeted control requirements from the storage, transportation and batching of coal, quartz sand and other materials. For the unorganized emission of VOCs, this standard focuses on the storage, transfer, sizing, painting, drying and other major links of VOCs materials such as coatings, adhesives, resins, and specifies the requirements for the management and control of measures. In addition, this standard proposes the recommended concentration limits for monitoring particulate matter and VOCs in the plant area, which will be implemented independently by the local government according to the needs of local environmental protection to monitor the unorganized emission in the plant area. Through the above control measures, the whole process control of unorganized emission is realized.
(2) Strengthen the precise control of organized emissions
The glass industry covers a wide range of products. In the process of formulating the standard, the consistency of the glass industry process was fully considered. The glass furnace, online coating, VOCs material processing, raw material weighing, batching and other processes were distinguished, and the applicable organized emission limits were specified. At the same time, in consideration of the differences of different types of products, the emission limits shall be controlled differently. In view of the small scale of glassware enterprises and relatively high installation and operation costs of denitration facilities, the NOx emission limit for glassware manufacturing industry is 500mg/m3, and that for other glass industries is 400mg/m3.
Implement differentiated management and control according to the initial VOCs emissions of the enterprise. For enterprises with large VOCs emissions, dual control of emission concentration and removal efficiency shall be implemented; For enterprises with small emissions, they only need to meet the requirements of concentration indicators. At the same time, in order to encourage source substitution, for enterprises that use raw and auxiliary materials in line with national regulations on low VOCs content products, only concentration indicators are implemented, not removal efficiency indicators, and enterprises are encouraged to use water-based coatings and other source measures to reduce total emissions.
(3) Optimize control indicators to reflect the collaborative control of pollution reduction and carbon reduction
The pure oxygen combustion process is widely used in glass kilns. This technology uses pure oxygen (oxygen content is more than 90%) to replace air for combustion support, which can significantly reduce NOx production while reducing energy consumption. It is a synergistic control technology for pollution reduction and carbon reduction. For the exhaust gas emissions of combustion devices, the United States, Japan, the European Union and other countries as well as China usually use the reference oxygen content index to control the diluted emissions, while the measured oxygen content of exhaust gas in pure oxygen combustion process is as high as 20%, which is not conducive to the promotion and application of this technology. For this reason, the standard has set the benchmark exhaust volume index, which solves the bottleneck of the popularization and application of pure oxygen combustion technology, and ensures the scientific management and control of the standard.
 

3、 How feasible is the implementation of the standard?
In recent years, relevant local standards have been issued in key regions such as Beijing, Tianjin and Hebei, surrounding regions, and the Yangtze River Delta. Glass enterprises in the region have taken the lead in upgrading process equipment and environmental protection facilities, accumulating mature cases of up to standard technologies, and laying a technical foundation for the implementation of standards. The industry association and relevant experts agreed that this standard can reflect industry concerns, has strong guidance and operability, and is eager to issue standards. At present, large and medium-sized glass enterprises with advanced technology and relatively complete environmental protection measures have reached the standard; Other enterprises implement the upgrading and transformation of environmental protection facilities according to their own conditions, which will increase the production cost correspondingly, but will not have a contraction effect on the supply or demand, which is acceptable to the industry. In the process of standard formulation, we have solicited public opinions and fully communicated with industry associations and relevant enterprises. The market has expected that relevant enterprises have begun to prepare for transformation. The existing enterprises will implement the standard from July 1, 2024, giving them sufficient time for upgrading.
 

4、 What are the environmental and social benefits of standard implementation?
The revision and implementation of the standard has good environmental benefits, plays a positive role in improving ambient air quality, and meets the public's demand for a good ecological environment. The implementation of this standard will further promote fair competition in the industry, effectively solve the problem of "bad money drives out good money", and help to establish a more fair and orderly market environment. At the same time, it will guide the glass industry to use non-toxic and harmless raw and auxiliary materials, promote the implementation of fuel structure, combustion technology and furnace structure optimization, reduce energy consumption, and promote the green and low-carbon development of the glass industry.

 

 

03 Interpretation of Emission Standard of Air Pollutants for Mineral Wool Industry (GB 41617-2022)
 

1、 What is the background of the standard?
The Opinions of the Central Committee of the Communist Party of China and the State Council on Deepening the Battle of Pollution Prevention clearly pointed out that during the "Fourteenth Five Year Plan" period, we should vigorously strengthen the coordinated control of fine particulate matter (PM2.5) and ozone pollution, and promote the coordinated emission reduction of nitrogen oxides (NOx) and volatile organic compounds (VOCs). Mineral wool industry is an important emission industry of NOx, particulate matter and other pollutants. China is a major producer of mineral cotton. The output of rock (mineral) cotton accounts for about 55% of the world's output, and the output of glass wool accounts for 40% of the world's output. The production capacity is mainly distributed in Hebei, Jiangxi, Hubei, Shandong, Sichuan and other regions. At present, the emission of air pollutants from mineral wool industry in China is in accordance with the Integrated Emission Standard of Air Pollutants (GB 16297-1996), the Emission Standard of Air Pollutants for Industrial Furnaces (GB 9078-1996) and the Control Standard for Unorganized Emission of Volatile Organic Compounds (GB 37822-2019). The current standard industry is not targeted, and some emission limits are loose, which does not match the current air pollution control technology; At the same time, the current standard mainly focuses on end control, and does not specify more effective source and process control requirements, which cannot meet the current environmental management needs. It is urgent to formulate emission standards applicable to the characteristics of industrial production processes, implement the requirements for precise, scientific and legal pollution control, and further standardize the management of industrial pollution emissions.
 

2、 What are the characteristics of this standard in terms of emission control?
This standard is based on the principle of precise and scientific pollution control, pollution reduction and carbon reduction, and synergistic efficiency. It implements coordinated emission reduction and governance of air pollutants and greenhouse gases, and strengthens the whole process control from source reduction, process control to end treatment.
(1) Strengthen unorganized emission source and process control
The fugitive emission of particulate matter is one of the key and difficult points in the pollution control of mineral wool industry. This standard comprehensively considers the material properties, process equipment level and industry management status of mineral wool industry, and puts forward the requirements for unorganized emission control from the aspects of coal, cullet, siliceous raw materials and other materials storage, loading and unloading, transportation, batching, cutting and other process links. In terms of VOCs unorganized emission control, the standard focuses on the storage, transfer and transportation of VOCs such as resins and adhesives, as well as the cotton gathering and curing processes, and stipulates the requirements for management and control measures. In addition, this standard proposes the recommended concentration limits for monitoring particulate matter and VOCs in the plant area, which will be implemented independently by the local government according to the needs of local environmental protection to monitor the unorganized emission in the plant area. Through the above control measures, the whole process control of unorganized emission is realized.
(2) Strengthen the precise control of organized emissions
This standard, based on the analysis of the production and pollution discharge of rock (mineral) wool and glass wool production processes, distinguishes the three processes of melting, molding, cutting and raw materials, and specifies applicable organized emission limits. The dual indicator control of concentration and removal efficiency is adopted, and differentiated control is implemented according to the initial VOCs emissions of the enterprise. For enterprises with large VOCs emissions, dual control of emission concentration and removal efficiency shall be implemented; For enterprises with small emissions, they only need to meet the requirements of concentration indicators; At the same time, in order to encourage source substitution, for enterprises that use raw and auxiliary materials in line with the national regulations on low VOCs content products, only concentration indicators are implemented, and enterprises are encouraged to adopt source measures such as water-based coatings to reduce total emissions.
(3) Optimize control indicators to reflect the collaborative control of pollution reduction and carbon reduction
At present, pure oxygen combustion process is being promoted and applied in glass furnace of glass wool. This technology uses pure oxygen (oxygen content is more than 90%) to replace air for combustion support, which is a source control technology for pollution reduction and carbon reduction while significantly reducing NOx generation. For the exhaust gas emissions of combustion devices, the United States, Japan, the European Union and other countries as well as China usually use the reference oxygen content index to control the diluted emissions. However, the measured oxygen content in the exhaust gas of pure oxygen combustion process is as high as 20%, and it is difficult to meet the standard with the reference oxygen content, which is not conducive to the promotion and application of this technology. For this reason, the standard has set the benchmark exhaust volume index to replace the benchmark oxygen content index, which has solved the bottleneck problem in the promotion and application of this technology and ensured the scientific management and control of the standard.
 

3、 How feasible is the implementation of the standard?
In recent years, Beijing Tianjin Hebei, Yangtze River Delta and other key regions have issued relevant local standards. Mineral wool enterprises in the region have taken the lead in upgrading process equipment and environmental protection facilities, accumulating mature cases of up to standard technologies, and laying a good technical foundation for the implementation of standards. The industry association and relevant experts agreed that this standard can reflect the industry's concerns, has strong guidance and operability, and is eager to issue the standard. At present, large and medium-sized enterprises with advanced technology and relatively perfect environmental protection measures have reached the standard; Other enterprises should implement the upgrading and transformation of environmental protection facilities according to their own conditions, which will increase production costs correspondingly, but will not have a contraction effect on supply or demand, and is acceptable to the industry. In the process of standard formulation, we have solicited public opinions and fully communicated with industry associations and relevant enterprises. The market has expected that relevant enterprises have begun to prepare for transformation. The existing enterprises will implement the standard from July 1, 2024, giving them sufficient time for upgrading.
 

4、 What are the environmental and social benefits of standard implementation?
The revision and implementation of the standard has good environmental benefits, plays a positive role in improving ambient air quality, and meets the public's demand for a good ecological environment. The implementation of this standard will further promote fair competition in the industry, effectively solve the problem of "bad money drives out good money", and help to establish a more fair and orderly market environment. At the same time, it will promote the promotion and application of clean fuel substitution, pure oxygen combustion and other pollution reduction and carbon reduction synergistic technologies, and promote high-quality development of the industry.

 

04 Interpretation of Emission Standard of Air Pollutants for Lime and Calcium Carbide Industry (GB 41618-2022)
 

1、 What is the background of the standard?
The Opinions of the Central Committee of the Communist Party of China and the State Council on Deepening the Battle of Pollution Prevention clearly pointed out that during the "Fourteenth Five Year Plan" period, we should vigorously strengthen the coordinated control of fine particulate matter (PM2.5) and ozone. Nitrogen oxides (NOx) are important precursors for the formation of PM2.5 and ozone, and are binding indicators of the "Fourteenth Five Year Plan". Lime and calcium carbide industries are both high energy consumption and high emission industries, and are also important emission sources of particulate matter and NOx. In 2021, the annual output of China's lime industry will be about 310 million tons, accounting for 72% of the world's total output, mainly distributed in Hebei, Shandong, Guangdong, Guangxi, Zhejiang, Fujian, Sichuan, Jiangsu, Jiangxi, Hunan and other provinces and cities. China is the only country in the world to produce polyvinyl chloride (PVC) on a large scale by calcium carbide method. In 2021, China's calcium carbide production capacity will be 38.5 million tons, more than 97% of the world's total production capacity, with a production of 30 million tons, mainly in the northwest region.
At present, lime and calcium carbide enterprises discharge air pollutants in accordance with the Emission Standard of Air Pollutants for Industrial Furnaces (GB 9078-1996) and the Integrated Emission Standard of Air Pollutants (GB 16297-1996). The industry is poorly targeted, and there are some problems in the implementation process, such as the unspecified emission limit of NOx and the requirements for the control of unorganized emissions. In order to further standardize the management of pollutant discharge in the lime and calcium carbide industries, supplement the shortcomings of emission standards in key industries of industrial furnaces and kilns, and implement accurate, scientific and legal pollution control, it is necessary to formulate the emission standards of atmospheric pollutants in the lime and calcium carbide industries, and further standardize the emission management of the industry.
 

2、 What are the characteristics of this standard in terms of emission control?
Based on the principle of problem orientation and precise implementation, this standard adheres to the system governance concept of controlling the whole process from source reduction, process control to end management, and has strong industry pertinence.
(1) Strengthen source and process control and standardize unorganized emission management
The unorganized emission is the difficulty of air pollutant emission control. The standard implements the whole process supervision of unorganized emission according to the characteristics of the industry. The standard specifies specific control measures for the unorganized emission links such as the storage, transfer and transportation of carbon materials, limestone, raw coal and the process. In addition, this standard proposes the recommended concentration limits for monitoring particulate matter in the plant area, which will be independently implemented by the local government according to the needs of local environmental protection to monitor the unorganized emission in the plant area. Through the above control measures, the whole process control of unorganized emission is realized.
(2) Combined control of major pollutants and characteristic pollutants to improve organized emission control
This standard is based on the analysis of production and pollution discharge in the production process of lime and calcium carbide mining, lime manufacturing, calcium carbide manufacturing, and lime product production. It distinguishes between lime kilns, drying kilns, crushing, screening, grinding and other production processes or facilities, and specifies applicable organized emission limits. In order to comprehensively control the emission of air pollutants and at the same time simplify the pollutant control project as much as possible, the form of "main pollutants+characteristic pollutants" is adopted to ensure the tightness of emission supervision. The main pollutants include particulate matter, sulfur dioxide and nitrogen oxides; Characteristic pollutant indicators reflect the concept of classified control. Toxic substance hydrogen cyanide is determined based on health risk, and odor substance ammonia is determined based on odor control.
(3) Optimize control indicators and encourage the use of advanced production processes
The vertical drying kiln has the advantages of good energy saving effect and low carbon material damage rate. However, due to the low-temperature drying, a large amount of cold air needs to be added, and the oxygen content in the waste gas is relatively high. Therefore, compared with the 16% reference oxygen content of other kilns, the standard stipulates that the reference oxygen content of vertical drying kilns is 18%, which solves the bottleneck of the promotion and application of vertical drying kilns and ensures the scientific management and control of the standard.
 

3、 How feasible is the implementation of the standard?
In recent years, relevant local standards have been issued in key regions such as Beijing, Tianjin and Hebei, surrounding regions, and the Yangtze River Delta. Lime and calcium carbide enterprises in the region have taken the lead in upgrading process equipment and environmental protection facilities, accumulating mature cases of up to standard technologies, and laying a technical foundation for the implementation of standards. The industry association and relevant experts agreed that this standard can reflect the industry's concerns, has strong guidance and operability, and is eager to issue the standard. After the implementation of the standard, some enterprises need to carry out upgrading and transformation of unorganized emission control facilities for material storage, transfer, transportation and particulate matter in the process. A small number of enterprises need to upgrade and transform their furnace flue gas treatment facilities, which will increase production costs accordingly, but will not have a contraction effect on supply or demand, which is acceptable in the industry. In the process of standard formulation, we have solicited public opinions and fully communicated with industry associations and relevant enterprises. The market has expected that relevant enterprises have begun to prepare for transformation. The existing enterprises will implement the standard from July 1, 2024, giving them sufficient time for upgrading.
 

4、 What are the environmental and social benefits of standard implementation?
The implementation of the standard has good environmental benefits, plays a positive role in improving ambient air quality, and meets the public's demand for a good ecological environment. The implementation of this standard will further promote fair competition in the industry, effectively solve the problem of "bad money drives out good money", and help to establish a more fair and orderly market environment. At the same time, it will raise the environmental access threshold for new, reconstruction and expansion projects in the lime and calcium carbide industries, improve the pollution control level of existing enterprises, promote the optimization of fuel structure, combustion technology and furnace structure, reduce energy consumption, and promote the synergy of pollution reduction and carbon reduction, which will help promote the green and high-quality development of the industry and achieve win-win environmental and economic benefits.

 

 

 

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