Notice on Issuing the ...
Attachment: 1. Scope of key areas
2.Key controlled VOCs substances
3.VOCs governance ledger record requirements
4.Checkpoints of VOCs Governance in Industrial Enterprises
5.Key points of inspection and management of VOCs in storage, transportation and marketing of oil products
Ministry of Ecology and Environment
June 26, 2019
Comprehensive treatment plan for volatile organic compounds in key industries
In order to implement the relevant requirements of the "Opinions of the Central Committee of the Communist Party of China and the State Council on Comprehensively Strengthening Ecological Environmental Protection and Resolutely Fighting Pollution Prevention and Control" and "Notice of the State Council on Printing and Distributing the Three-Year Action Plan for Winning the Blue Sky Defense War", in-depth implementation of the "13th Five-Year Plan" The Work Plan for the Prevention and Control of Pollution by Organic Compounds, to strengthen the guidance to local work, improve the scientific, pertinence and effectiveness of the treatment of volatile organic compounds (VOCs), and coordinate the control of greenhouse gas emissions, and formulate this plan.
一、 Situation and problems
?。ㄒ唬¬OCs pollution emissions have a prominent impact on the atmospheric environment. VOCs are important precursors for the formation of fine particulate matter (PM2.5) and ozone (O3), and they also have an impact on climate change. In recent years, my country’s PM2.5 pollution control has made positive progress, especially in the Beijing-Tianjin-Hebei and surrounding areas, and the Yangtze River Delta. However, the PM2.5 concentration is still at a high level, and the phenomenon of exceeding the standard is still common. It is an improvement in winning the battle to defend the blue sky. The key factor of ambient air quality. The source analysis results of Beijing-Tianjin-Hebei and surrounding areas show that organic matter (OM) is the most important component of PM2.5 at the current stage, accounting for 20%-40%, of which secondary organic matter accounts for 30%-50% of OM , Mainly from the conversion and generation of VOCs.
At the same time, the problem of O3 pollution in my country has become increasingly apparent. The Beijing-Tianjin-Hebei and surrounding areas, the Yangtze River Delta, the Fenwei Plain and other regions (hereinafter referred to as key areas, and the scope is shown in Annex 1) O3 concentration is on the rise, especially in summer and autumn. The primary pollutant of the city. Studies have shown that VOCs are the main controlling factor for O3 generation in key areas at this stage.
Compared with the control of particulate matter, sulfur dioxide, and nitrogen oxide pollution, the management foundation of VOCs is weak and has become a shortcoming of atmospheric environmental management. Industries such as petrochemical, chemical, industrial coating, packaging and printing, oil storage, transportation and marketing (hereinafter referred to as key industries) are key sources of VOCs emissions in my country. In order to win the battle to defend the blue sky and further improve the environmental air quality, it is urgent to comprehensively strengthen the comprehensive management of VOCs in key industries.
?。ǘ㏕he main problem. Since the implementation of the Air Pollution Prevention and Control Action Plan, my country has continuously strengthened the prevention and control of VOCs pollution, issued VOCs pollution prevention and control work plans, issued emission standards for oil refining and petrochemical industries, and formulated local emission standards in some regions to strengthen VOCs monitoring, monitoring, reporting, and statistics Some progress has been made in building basic capacity. However, the governance of VOCs is still weak, mainly in the form of:
One is the lack of source control. The use of raw and auxiliary materials containing VOCs such as organic solvents is an important source of VOCs emissions. Due to inadequate ideological understanding, insufficient policy incentives, and high input costs, the current source replacement measures for raw and auxiliary materials with low VOCs content are obviously insufficient. According to statistics, in my country's industrial coatings, the use ratio of low-VOCs content coatings such as water-based, powder and other low-VOCs is less than 20%, which is lower than the level of 40%-60% in developed countries such as Europe and the United States.
Second, the problem of fugitive emissions is prominent. VOCs are highly volatile, involve a wide range of industries, have many production and discharge links, and have obvious characteristics of unorganized emissions. Although the Air Pollution Prevention and Control Law puts forward airtight and enclosed requirements for unorganized VOCs emissions, the current large-scale and wide-ranging enterprises have not adopted effective control measures, especially the poor management of small and medium-sized enterprises, low collection efficiency, and prominent escape problems. Studies have shown that fugitive emissions account for more than 60% of my country’s industrial VOCs emissions.
Third, pollution control facilities are simple and inefficient. VOCs exhaust gas components are complex, the treatment technology is diverse, the applicability varies greatly, and the technical selection and system matching requirements are high. my country's VOCs governance market started late, with low entry barriers, and insufficient supervision capabilities. The quality of pollution control facilities is uneven, and the phenomenon of coping with governance and ineffective governance is prominent. In some areas, low-temperature plasma, photocatalysis, photooxidation and other low-efficiency technologies are even more than 80% applied, and the pollution control effect is poor. Some companies have not achieved the expected pollution control effects even if they have chosen high-efficiency treatment technologies due to non-standard designs and system mismatches.
Fourth, the operation management is not standardized. The governance of VOCs requires comprehensive strengthening of process control and implementation of refined management. However, at present, enterprises generally have problems such as imperfect management systems, unestablished operating procedures, and insufficient technical capabilities of personnel. Some companies use activated carbon adsorption technology, but do not replace the adsorption material for a long time; some companies use combustion and condensation treatment technology, but the operating temperature does not meet the design requirements; some companies have carried out leak detection and repair (LDAR) work, but did not follow the regulations Operation etc.
Fifth, the monitoring and control are not in place. The monitoring of VOCs in my country is still in its infancy. The quality of self-monitoring by enterprises is generally not high, and problems such as unreasonable point settings, irregular sampling methods, and insufficient representativeness of the monitoring period are prominent. Some key enterprises are not equipped with automatic monitoring facilities as required. Industrial parks and industrial clusters involving VOCs emissions lack effective monitoring, traceability and early warning measures. From the perspective of supervision, there is a lack of effective means such as on-site rapid detection, and insufficient applications such as navigation monitoring and grid monitoring.
二、main target
By 2020, establish a sound VOCs pollution prevention and control management system, achieve significant results in the treatment of VOCs in key areas and key industries, complete the goal of reducing VOCs emissions by 10% in the "13th Five-Year Plan" plan, coordinately control greenhouse gas emissions, and promote the environment The air quality continues to improve.
三、Control ideas and requirements
?。ㄒ唬¬igorously promote source substitution. By using water-based, powder, high-solid, solvent-free, radiation-curable coatings with low VOCs content, water-based, radiation-cured, plant-based inks with low VOCs content, water-based, hot-melt, solvent-free, radiation-cured, and modified , Biodegradable adhesives with low VOCs content, and cleaning agents with low VOCs content and low reactivity, etc., instead of solvent-based coatings, inks, adhesives, cleaning agents, etc., to reduce VOCs generation from the source. Industries such as industrial coating, packaging and printing should increase the intensity of source substitution; the chemical industry should promote the use of raw and auxiliary materials with low (no) VOCs content and low reactivity, and accelerate the green substitution of aromatic hydrocarbons and halogen-containing organic compounds. Companies should vigorously promote the use of low-VOCs-content wood coatings, vehicle coatings, mechanical equipment coatings, container coatings, and building and structure protective coatings. In industries with mature technologies, promote the use of low-VOCs-content inks and adhesives, and in key areas until the end of 2020 Basically completed before. Encourage to accelerate the development and production of low-VOCs content coatings, inks, adhesives, etc.
Strengthen policy guidance. If the company adopts coatings, inks, adhesives, etc. that comply with the national regulations on products with low VOCs content, and the emission concentration is stable and up to the standard, and the emission rate and emission performance meet the relevant regulations, the corresponding production process does not require the construction of end treatment facilities. For processes where the VOCs content (mass ratio) of the raw and auxiliary materials used is less than 10%, it is not required to take measures to collect fugitive emissions.
?。ǘ〤omprehensively strengthen the control of fugitive emissions. Focus on five categories of VOCs-containing materials (including VOCs-containing raw and auxiliary materials, VOCs-containing products, VOCs-containing waste materials, and organic polymer materials, etc.) storage, transfer and transportation, leakage of equipment and pipeline components, open liquid surface escape, and process Emission sources are managed and controlled, and unorganized emissions of VOCs are reduced through measures such as equipment and site sealing, process improvement, and effective waste gas collection.
Strengthen the airtight management of equipment and premises. Materials containing VOCs should be stored in airtight containers, packaging bags, high-efficiency airtight storage tanks, closed storage, silos, etc. For the transfer and transportation of materials containing VOCs, airtight pipelines or airtight containers, tank trucks, etc. should be used. The gathering, transportation, storage and treatment process of wastewater with high VOCs content (the detected concentration of VOCs at 100 mm above the liquid level of the wastewater exceeds 200ppm, of which the key areas exceed 100ppm, in terms of carbon) should be covered and airtight. During the production and use of materials containing VOCs, effective collection measures should be taken or operations should be carried out in a confined space.
Promote the use of advanced production technology. Through the use of fully enclosed, continuous, automated and other production technologies, as well as high-efficiency processes and equipment, we can reduce unorganized emissions during the process. The bottom loading method is preferred for loading of volatile organic liquids. The petrochemical and chemical industries focus on promoting the use of low (no) leakage pumps, compressors, filters, centrifuges, drying equipment, etc., and promote the use of online oil blending technology and closed circulating water cooling systems. The industrial coating industry focuses on promoting the use of compact coating processes, popularizing the use of roller coating, electrostatic spraying, high-pressure airless spraying, air-assisted airless spraying, thermal spraying and other coating technologies, and encouraging companies to use automated and intelligent spraying equipment to replace manual labor. Spraying, reduce the use of air spraying technology. The packaging and printing industry vigorously promotes the use of solvent-free compounding, extrusion compounding, and co-extrusion compounding technologies, and encourages the use of water-based gravure, alcohol-water gravure, radiation curing gravure, flexographic printing, waterless offset printing and other printing processes.
Improve the exhaust gas collection rate. Following the principle of "collecting all due and collecting by quality", scientifically design the waste gas collection system to transform unorganized emissions into organized emissions for control. If a fully enclosed gas collecting hood or enclosed space is adopted, except for special requirements of the industry, the state of slight negative pressure shall be maintained, and the ventilation rate shall be set reasonably according to relevant regulations. If a local gas collecting hood is used, the unorganized discharge position of VOCs farthest from the opening surface of the gas collecting hood should be controlled at a wind speed of not less than 0.3 m/s. If required by the industry, it shall be implemented in accordance with relevant regulations.
Strengthen the leakage control of equipment and pipeline components. For equipment and pipeline components that contain gaseous and liquid VOCs, and the number of sealing points is greater than or equal to 2,000, LDAR work should be carried out as required. Petrochemical enterprises shall implement the regulations in accordance with industry emission standards.
?。ㄈ㏄romote the construction of suitable and efficient pollution control facilities. Enterprises should build new pollution control facilities or renovate existing pollution control facilities, and should reasonably select treatment technologies based on the concentration, composition, air volume, temperature, humidity, pressure, and production conditions of the exhaust gas discharged. Encourage companies to adopt a combination of multiple technologies to improve the efficiency of VOCs governance. For low-concentration and high-volume exhaust gas, it is advisable to adopt concentration technologies such as zeolite runner adsorption, activated carbon adsorption, air-reduction and concentration-enhancement, to increase the concentration of VOCs and then purify; Catalytic combustion and other technologies. Oil and gas (solvent) recovery should adopt condensation + adsorption, adsorption + absorption, membrane separation + adsorption and other technologies. Low-temperature plasma, photocatalysis, and photooxidation technologies are mainly suitable for the treatment of malodors and odors; the biological method is mainly suitable for the treatment of low-concentration VOCs waste gas and the treatment of malodors. Non-water-soluble VOCs exhaust gas is prohibited to be sprayed and absorbed by water or aqueous solution. If the disposable activated carbon adsorption technology is used, the activated carbon should be replaced regularly, and the waste activated carbon should be regenerated or disposed of. In industrial parks and industrial clusters where conditions permit, promote centralized spraying, centralized solvent recovery, and centralized activated carbon regeneration, etc., to strengthen resource sharing and improve the efficiency of VOCs governance.
Standardize engineering design. Adopting the adsorption treatment process shall meet the requirements of "Technical Specification for Industrial Organic Waste Gas Treatment Engineering by Adsorption Method". If the catalytic combustion process is adopted, it shall meet the requirements of "Technical Specification for Industrial Organic Waste Gas Treatment Engineering by Catalytic Combustion Method". For other treatment processes such as regenerative combustion, it shall be designed in accordance with the requirements of relevant technical specifications.
Implement dual control of emission concentration and removal efficiency of key emission sources. The workshop or production facility collects and discharges waste gas, and the initial VOCs emission rate is greater than or equal to 3 kg/hour, and the key areas are greater than or equal to 2 kg/hour, should increase control efforts. In addition to ensuring the stable emission concentration and reaching the standard, the removal efficiency control should also be implemented , The removal efficiency is not less than 80%; except for the raw and auxiliary materials used in compliance with the national regulations on products with low VOCs content, the industry emission standards shall be implemented in accordance with the relevant regulations.
?。ㄋ模㊣n-depth implementation of refined management and control. All regions should focus on the local environmental air quality improvement needs, analyze the sources of O3 and PM2.5, combine the characteristics of industrial pollution emissions and the photochemical reactivity of VOCs, and determine the key industries and key pollutants for VOCs control in the region, taking into account odor pollutants and pollutants. To control toxic and hazardous substances, etc., put forward effective management and control plans to improve the accuracy, pertinence and effectiveness of VOCs governance. See Annex 2 for VOCs under national key control.
Implement the "one factory, one policy" system. All localities should strengthen support and guidance for enterprises, organize experts to provide professional technical support for enterprises with large local pollutant discharges, strictly control, and guide enterprises to compile practical pollution control plans, clarify the substitution of raw and auxiliary materials, process improvement, and Unorganized emission control, waste gas collection, pollution control facilities construction and other whole-process emission reduction requirements, measure investment costs and emission reduction benefits, and provide technical services for enterprises to effectively carry out comprehensive control of VOCs. The key areas should organize local companies with large VOCs emissions to carry out the preparation of the "One Plant, One Policy" plan, which will be basically completed by the end of June 2020; post-treatment evaluation work should be carried out in a timely manner, and the subsidy policies issued by various regions should be closely related to the emission reduction effect. hook up. Encourage local governments to implement mandatory clean production audits for key industries.
Strengthen enterprise operation management. Enterprises should systematically sort out the main links and processes of VOCs emissions, including start-up and shutdown, inspection and maintenance operations, etc., and formulate specific operating procedures and implement them to specific responsible persons. Improve the internal assessment system. Strengthen personnel capacity training and technical exchanges. Establish a management ledger to record the key parameters of the enterprise's production and pollution control facilities operation (see Annex 3). The online monitoring parameters must ensure that they can be retrieved in real time, and the relevant ledger records should be kept for at least three years.
四、Key industry governance tasks
?。ㄒ唬〤omprehensive management of VOCs in the petrochemical industry. Comprehensively increase the efforts to control VOCs in petroleum refining and organic chemicals, synthetic resins, synthetic fibers, synthetic rubber and other industries. Focus on strengthening the control of source items such as leaks at sealing points, waste water and circulating water systems, storage tanks, organic liquid handling, and process waste gas to ensure stable and up-to-standard emissions. In key areas, we should further increase the control of other source items, prohibit the extinguishing of the fire torch system flashing lights, and install video monitoring devices; promote online reconciliation of kerosene, diesel, etc.; VOCs discharged from abnormal working conditions should be purged to the torch system or closed for collection and treatment ; VOCs-containing waste liquid and slag should be stored tightly; anti-corrosion, waterproof and rust-proof coating adopts low-VOCs content coating.
Deepen LDAR work. Strictly follow the "Guidelines for Leak Detection and Repair in Petrochemical Enterprises" to establish a ledger to carry out leak detection, repair, quality control, and record management. Strengthen the inspection of standby pumps, in-use pumps, regulating valves, agitators, open pipelines, etc., and strengthen quality control; include the sealing points of VOCs treatment facilities and storage tanks in the inspection plan. In accordance with the "Volatile Organic Compounds Unorganized Emission Control Standards" related equipment and pipeline components VOCs leakage control and supervision requirements, strengthen the supervision of the leakage of petrochemical companies' sealed points. Encourage key areas to implement bagging method detection for sealing points with large leakage, and infrared method for detection of unreachable sealing points.
Strengthen the collection and treatment of VOCs in wastewater and circulating water systems. Intensify the transformation of waste water gathering and transportation systems. Existing enterprises in key areas have gradually replaced open gathering and transportation methods such as floor drains, ditches, canals, and wells by adopting measures such as closed pipelines. Comprehensively strengthen the collection and treatment of high-concentration VOCs waste gas from waste water systems. Collection wells (pools), adjustment tanks, grease traps, air flotation tanks, thickening tanks, etc. should adopt closed processes or closed collection measures, and supporting the construction of efficient pollution control facilities such as combustion. Low-concentration VOCs waste gas such as biochemical tanks and aeration tanks should be collected in a closed manner, and deodorization and other treatments should be implemented to ensure compliance with emission standards. Strengthen the monitoring of circulating water. Petrochemical enterprises in key areas shall carry out the monitoring of total organic carbon (TOC) or purgeable organic carbon (POC) at the import and export of circulating water towers and VOCs-containing material heat exchange equipment at least once every six months, and the export concentration is greater than the import If the concentration is 10%, the leak point must be traced and repaired in time.
Strengthen the management of VOCs in storage tanks and organic liquid loading and unloading. Intensify the treatment of intermediate storage tanks. If the real vapor pressure is greater than or equal to 5.2 kilopascals (kPa), effective control measures must be taken in strict accordance with relevant regulations. Encourage key areas to take control measures for organic liquids whose true vapor pressure is greater than or equal to 2.8kPa. Further intensify the control of VOCs in the loading and unloading of volatile organic liquids, promote the bottom loading method of oil tankers in key areas, promote the use of oil and gas recovery systems for ship loading and unloading, and carry out the bottom loading work of train transportation on a trial basis. For storage tanks and organic liquid loading and unloading, terminal treatment measures shall be adopted to ensure stable operation.
Deepen the treatment of process waste gas VOCs. Effectively implement the treatment of catalyst regeneration exhaust gas and oxidation tail gas VOCs, and strengthen the treatment of tail gas VOCs in acid water tanks, delayed coking, synthetic rubber, synthetic resin, and synthetic fibers. Promote a fully enclosed production process and increase the collection of unorganized emissions. Encourage enterprises to send waste gas containing VOCs to process heating furnaces, boilers, etc. for direct combustion treatment, and pollutant emissions meet the requirements of relevant emission standards for the petrochemical industry. The tail gas of the acid water tank should be collected and processed. Promote the transformation of delayed coking equipment in key areas to implement closed decoking (airtight including cold coke water and cutting coke water). Synthetic rubber, synthetic resin, synthetic fiber, etc. promote the use of closed dewatering, degassing, blending and other processes and equipment, and supporting the construction of high-efficiency pollution control facilities.
?。ǘ〤omprehensive management of VOCs in the chemical industry. Strengthen the control of VOCs in the pharmaceutical, pesticide, coating, ink, adhesive, rubber and plastic products industries. Focus on improving the airtight level of the main processes involving VOCs emissions, strengthen the collection of unorganized emissions, and increase the storage and handling of VOCs-containing materials. Wastewater storage, aeration tanks and their previous wastewater treatment facilities shall be covered and closed as required to implement waste gas collection and treatment. If the number of sealing points is greater than or equal to 2000, LDAR work shall be carried out.
Actively promote the use of raw and auxiliary materials with low VOCs content or low reactivity to speed up process improvement and product upgrades. The pharmaceutical and pesticide industries promote the use of non-halogenated hydrocarbons and non-aromatic hydrocarbon solvents, and encourage the production of water-based pesticide formulations. The rubber product industry promotes the use of new coupling agents and adhesives, and uses paraffin oil to replace ordinary aromatic oil, coal tar and other additives. Optimize the production process. The pesticide industry promotes water-phase method and biological enzymatic synthesis technology; the pharmaceutical industry promotes biological enzymatic synthesis technology; the rubber product industry promotes the use of tandem mixing and atmospheric continuous desulfurization processes.
Accelerate the airtight transformation of production equipment. Airtight measures are taken to improve the level of process equipment for the processes of feeding and discharging, material conveying, mixing, solid-liquid separation, drying, and filling. Speed up the elimination of open and open flow facilities. In principle, the transportation of VOCs-containing materials in key areas adopts gravity flow or pumping methods, and gradually eliminates vacuum methods; organic liquid feeding encourages the use of bottom and immersion tube feeding methods, and eliminates splash feeding; solid material feeding is gradually promoted to adopt airtight Feeding device.
Strictly control VOCs emissions during storage and loading and unloading. Encourage the use of pressure tanks, floating roof tanks, etc. instead of fixed roof tanks. For organic liquids whose real vapor pressure is greater than or equal to 27.6kPa (the key area is greater than or equal to 5.2kPa) and stored in a fixed roof tank, a gas phase balance system or collection and purification treatment shall be adopted in accordance with relevant regulations.
Implement waste gas classification collection and treatment. Condensation, adsorption regeneration and other recovery technologies are preferred; if it is difficult to recover, efficient treatment technologies such as combustion, adsorption concentration + combustion should be selected. Water-soluble, acid-base VOCs waste gas should be treated with multi-stage chemical absorption technology. Deodorizing treatment should be further strengthened for malodorous waste gas.
Strengthen the control of exhaust gas emission under abnormal working conditions. Recycling of materials containing VOCs should be strengthened in the process of material return, purging, and cleaning, and the VOCs waste gas generated should be collected and treated more strongly. Volatile unqualified products produced during the start-up phase should be collected in intermediate storage tanks and other devices. Chemical companies in key areas should formulate operating procedures for the treatment of VOCs under abnormal conditions such as starting, stopping, inspecting and maintaining.
?。ㄈ〤omprehensive management of industrial coating VOCs. Intensify the efforts to control VOCs in industries such as automobiles, furniture, containers, electronic products, and construction machinery. Key areas should combine the characteristics of local industries to accelerate the implementation of comprehensive management of VOCs in other industries.
Strengthen source control, speed up the use of powder, water-based, high-solids, radiation curing and other low-VOCs coatings instead of solvent-based coatings. The use of water-based paints is vigorously promoted in automobile manufacturing primers in key areas, and the use of high-solid or water-based paints in passenger car intermediate coatings and colored paints is vigorously promoted to accelerate the transformation of intermediate coatings and colored paints such as passenger cars and trucks. Steel container manufacturing vigorously promotes the use of water-based coatings in processes such as inside, outside, and wood floor coating, and accelerates the use of water-based coatings for special containers on the premise of ensuring the anti-corrosion function. Wood furniture manufacturing vigorously promotes the use of water-based, radiation-cured, powder coatings and water-based adhesives; metal furniture manufacturing vigorously promotes the use of powder coatings; upholstered furniture manufacturing vigorously promotes the use of water-based adhesives. Construction machinery manufacturing vigorously promotes the use of water-based, powder and high-solid coatings. The manufacture of electronic products promotes the use of powder, water-based, and radiation-curable coatings.
Speed up the promotion of compact coating technology, advanced coating technology and equipment. Automobile manufacturing promotes the use of compact processes such as "three coatings and one drying", "two coatings and one drying" or no intermediate coating, electrostatic spraying technology, and automated spraying equipment. Automobile metal parts companies encourage the use of powder electrostatic spraying technology. The steel plate is processed by roller coating in one sanding process of container manufacturing. Wooden furniture promotes the use of efficient reciprocating spraying boxes, manipulators and electrostatic spraying techniques. For panel furniture that adopts spraying technology, promote the use of powder electrostatic spraying technology; for solvent-based, radiation-curable coatings, promote the use of roller coating, curtain coating and other processes. Construction machinery manufacturing should increase the proportion of indoor painting and encourage the use of automatic spraying, electrostatic spraying and other technologies. The manufacture of electronic products promotes the use of electrostatic spraying and other technologies.
Effectively control fugitive emissions. Coatings, thinners, cleaning agents and other raw and auxiliary materials should be stored tightly, and the processes of deployment, use, and recycling should be carried out in closed equipment or in a closed space, and transported in closed pipelines or closed containers. Except for large workpieces, open spraying and drying (air) drying operations are prohibited. Except for process restrictions, centralized deployment is implemented in principle. VOCs emission processes such as blending, spraying and drying should be equipped with an effective exhaust gas collection system.
Promote the construction of suitable and efficient pollution control facilities. Spray exhaust gas should be equipped with high-efficiency paint mist treatment device. Spraying, drying (air) dry waste gas should adopt adsorption concentration + combustion treatment method, and for small air volume, disposable activated carbon adsorption and other processes can be used. The blending and leveling waste gas can be treated together with spraying and drying (air) drying waste gas. For production lines using solvent-based coatings, the drying waste gas should be treated separately by combustion, and recovery thermal combustion devices can be used if conditions permit.
?。ㄋ模〤omprehensive management of VOCs in the packaging and printing industry. Focus on promoting the treatment of VOCs such as plastic flexible packaging and printing, and printing iron cans, actively promote the use of low (no) VOCs content raw and auxiliary materials and environmentally friendly technology substitution, comprehensively strengthen the control of unorganized emissions, and build efficient terminal purification facilities. Gradually carry out the VOCs management of publication printing in key areas, and promote the use of vegetable oil-based inks, radiation curing inks, low (no) alcohol fountain solution and other low (no) VOCs content raw and auxiliary materials and waterless printing, blanket automatic cleaning and other technologies , To achieve pollution reduction.
Strengthen source control. Plastic flexible packaging printing companies promote the use of water-alcoholic inks, single-component solvent inks, solvent-free composite technology, co-extrusion composite technology, etc., and encourage the use of water-based inks, radiation-curable inks, UV-curable varnishes, low (no) volatile and Cleaners with high boiling points, etc. Iron printing enterprises are speeding up the promotion of the use of radiation curing coatings, radiation curing inks, and UV curing varnishes. Can manufacturers promote the use of water-based inks and water-based paints. Encourage packaging and printing companies to implement technological transformations such as offset printing and flexo printing.
Strengthen the control of fugitive emissions. Strengthen the control of the unorganized emission of VOCs in the storage, deployment, transportation, and use of VOCs-containing materials such as inks, thinners, adhesives, coating fluids, and cleaning agents. The storage and transportation of materials containing VOCs should be kept tightly closed. The blending should be carried out in a closed device or space and collected effectively, and the non-ready state should be sealed and sealed. Coating, printing, laminating, laminating, glazing, cleaning and other VOCs-containing materials should be used in closed equipment or operated in a closed space; if they cannot be closed, local gas collection measures should be taken, and the exhaust gas should be discharged to the VOCs exhaust gas collection system. Gravure and flexographic printing presses should adopt a closed scraper, or install a cover plate, change the shape of the ink tank opening and other measures to reduce the fugitive escape of the ink tank. Encourage printing companies in key areas to carry out negative pressure transformation or partial wind-enclosure transformation of VOCs-related discharge workshops.
Improve the end treatment level. Packaging and printing enterprises should adopt high-efficiency treatment technologies such as adsorption concentration + condensation recovery, adsorption concentration + combustion, wind reduction and concentration enhancement + combustion in the VOCs emission process such as printing and dry compounding.
?。ㄎ澹〤omprehensive management of VOCs in oil storage, transportation and sales. Increase the emission control of VOCs such as gasoline (including ethanol gasoline), naphtha, kerosene (including aviation kerosene), and crude oil, and focus on promoting the recovery and treatment of oil and gas at gas stations, tank trucks, and oil storage depots. The key areas should also promote the oil and gas recovery and management of oil tankers.
Deepen the recovery of oil and gas at gas stations. In areas with heavier O3 pollution, the administrative areas have vigorously promoted gas station oil storage and refueling oil and gas recovery and treatment, and key areas will be basically completed by the end of 2019. The buried oil tank adopts an electronic liquid level gauge for gasoline tightness measurement. Standardize the operation of oil and gas recovery facilities, strengthen inspections on the gas-to-liquid ratio, system airtightness, and pipeline liquid resistance of the refueling guns by themselves or by hiring a third party, and increase the frequency of inspections. In principle, it will be carried out every six months in key areas to ensure the normal operation of the oil and gas recovery system. In key areas, we will speed up the installation of automatic monitoring equipment for oil and gas recovery at gas stations with annual sales of more than 5,000 tons of gasoline, and network with the ecological environment department, which will be basically completed by the end of 2020.
Promote the recovery and treatment of oil and gas in oil storage depots. Gasoline, aviation kerosene, crude oil, and naphtha with a true vapor pressure of less than 76.6 kPa should be stored in floating roof tanks. Among them, horizontal storage tanks can be used if the oil volume is less than or equal to 100 cubic meters. Naphtha with a true vapor pressure greater than or equal to 76.6 kPa should be stored in low pressure tanks, pressure tanks or other equivalent measures. Accelerate the collection and processing of oil and gas discharged in the process of receiving and dispatching oil products. Strengthen the interface leak detection of the oil and gas recovery system of oil storage depots, increase the frequency of detection, reduce oil and gas leakage, and ensure the normal operation of the oil and gas recovery and processing device during the oil loading and unloading process. Strengthen the tightness test of the oil and gas recovery system of tank trucks and the tightness of the gas and gas recovery pneumatic valves, and carry out at least once a year. Promote the installation of automatic monitoring facilities for oil and gas recovery in oil storage depots.
?。〤omprehensive management of VOCs in industrial parks and industrial clusters. All localities should increase the comprehensive rectification of VOCs-related industrial parks and industrial clusters, strengthen resource sharing, implement centralized management, carry out park monitoring and evaluation, and establish an environmental information sharing platform.
For industrial parks and industrial clusters where coating companies are concentrated, such as furniture, machinery manufacturing, electronic products, automobile maintenance, etc., encourage the construction of centralized coating centers, equipped with efficient exhaust gas treatment facilities, instead of scattered coating processes. For petrochemical and chemical industrial parks and industrial clusters, implement unified supervision of leak detection and encourage the establishment of an LDAR information management platform in the park. For industrial parks and industrial clusters that use a large amount of organic solvents, such as packaging and printing, fabric finishing, synthetic rubber and their products, etc., promote the construction of a centralized organic solvent recycling and disposal center to increase the recycling rate of organic solvents. For industrial parks and industrial clusters that use a large amount of activated carbon, local governments are encouraged to make overall plans, build regional activated carbon centralized regeneration bases, and establish a management model of activated carbon decentralized use, unified recycling, and centralized regeneration, which effectively solves the problem of not replacing activated carbon in time and not desorbing and regenerating. , For problems that are difficult to supervise, the desorbed VOCs and other pollutants should be properly disposed of.
Strengthen the unified management of industrial parks and industrial clusters. Establish industry benchmarks, formulate comprehensive remediation plans, and guide the overall upgrade of industrial parks and industrial clusters. Petrochemical and chemical industrial parks and industrial clusters must establish and improve the file management system, clarify the source spectrum of enterprise VOCs, identify characteristic pollutants, and specify the construction of enterprise waste gas collection and treatment facilities, emergency plans for severely polluted weather, and enterprise illegal punishments. information. Encourage the development of integrated services such as monitoring, investigation, and construction and operation of environmental protection facilities for parks and industrial clusters.
Improve the monitoring and control capabilities of industrial parks and industrial clusters. Accelerate the monitoring of environmental air quality VOCs in key industrial parks and industrial clusters, and the key areas will be basically completed by the end of 2020. Petrochemical and chemical industrial parks should build a monitoring, early warning and monitoring system, and carry out navigation monitoring, grid monitoring, and traceability analysis if the conditions are available. In industrial parks and industrial clusters involved in odor pollution, promote the implementation of odor electronic nose monitoring and early warning.
五、Implementation and guarantee
?。ㄒ唬㏒trengthen organizational leadership. In accordance with the overall deployment of winning the blue sky defense war, all localities must deepen the comprehensive management of VOCs in key industries. Eco-environmental departments at all levels should strengthen coordination with relevant departments and industry associations to form a joint force; combine the work of the second national pollution source survey and the compilation of pollution source emission inventories to establish key local VOCs governance industries and establish key pollution source management accounts; organization; Monitoring, law enforcement, scientific research and other forces strengthen supervision and assistance, and carry out special governance actions. Strengthen service guidance, strengthen supervision and fixed-point assistance in key areas, and make comprehensive management of VOCs in key industries the focus of assistance. The Beijing-Tianjin-Hebei and surrounding areas, the Fenwei Plain and other "one city, one policy" station tracking research working group should increase the research support for VOCs governance. It is necessary to strengthen supervision and accountability for those with insufficient advancement, lagging work, and inadequate governance.
?。ǘ㊣mprove the standard system. Accelerate the formulation and revision of VOCs-containing product quality standards. Before the end of 2019, introduce technical requirements for low-VOCs content coating products, formulate and revise limit standards for hazardous substances in architectural wall coatings, wood coatings, vehicle coatings, and industrial protective coatings, and formulate ink, Mandatory standards for the limits of volatile organic compounds for adhesives and cleaning agents. Accelerate the formulation and revision of VOCs industry emission standards, and strive to complete the formulation of air pollutant emission standards for pesticides, automotive coatings, container manufacturing, packaging and printing, furniture manufacturing, and electronics industries by the end of June 2020. Establish VOCs monitoring and analysis method standards and technical requirements for monitoring equipment that are compatible with emission standards, and accelerate the introduction of technical specifications for continuous monitoring of VOCs emissions from fixed sources and technical specifications for portable monitoring of VOCs. Encourage local governments to set stricter local emission standards.
?。ㄈ㏒trengthen monitoring and control. Speed up the formulation of self-monitoring guidelines and industrial park monitoring guidelines for industries such as furniture, wood-based panels, electronics industry, packaging and printing, coatings, inks, pigments and similar products, rubber products, and plastic products. The petrochemical, coking, raw materials, pesticides, automobile manufacturing, tanning, textile printing and dyeing industries that have established regulations for pollution discharge permit management must carry out self-monitoring work in strict accordance with relevant regulations.
Key sources of VOCs emissions from petrochemicals, chemicals, packaging and printing, and industrial coatings are included in the list of key pollutants. The main pollutants are installed with automatic monitoring facilities and networked with the ecological environment department. The key areas will be basically completed by the end of 2019, and the country will be completed by the end of 2020. Basically completed before. Encourage enterprises with prominent unorganized emissions in key areas to install video surveillance facilities in their main emission processes. Encourage enterprises to equip portable VOCs monitoring equipment to keep abreast of the pollution discharge status in time. Qualified enterprises should automatically and continuously record the operation of environmental protection facilities and the main parameters of related production processes through distributed control systems (DCS). Data such as automatic monitoring and DCS monitoring must be stored for at least one year, and video monitoring data must be stored for at least three months.
Strengthen the quality control of monitoring data. Enterprises' self-monitoring should be carried out under normal production conditions. For pollution sources with intermittent emissions or large fluctuations in emissions, the monitoring work should cover periods of high emission intensity. The operation and maintenance of automatic monitoring facilities were strengthened, and the data transmission efficiency reached 90%. Enterprises should ensure the normal operation of automatic monitoring facilities and network transmission of data under normal production and abnormal operating conditions such as production restriction, production shutdown, and overhaul. All localities shall promptly verify and investigate and deal with abnormal situations such as missing data and long-term disconnection. Strengthen the supervision and management of ecological environment monitoring agencies, and publish information on violations of laws and regulations to the public through websites such as "Credit China" for monitoring agencies and personnel who have seriously broken their trust.
?。ㄋ模㏒trengthen supervision and law enforcement. All localities should increase the supervision and law enforcement of VOCs emissions, severely crack down on illegal pollutant discharges, and form an effective deterrent. For companies that discharge unlicensed pollutants, discharge pollutants not in accordance with permits, cannot stably meet discharge standards, and do not meet the requirements of tactical control, comprehensive use of continuous daily penalties, seizures, production restrictions and production suspensions, etc., are strictly punished in accordance with laws and regulations, and regularly reported to The public is open. Seriously investigate and punish serious violations of the law, such as fraud and unauthorized suspension of environmental protection facilities, and investigate and prosecute relevant personnel in accordance with the law. Rectify and standardize the market order of environmental protection services, and severely crack down on irregularities in the construction, operation and maintenance of VOCs treatment facilities.
Take multiple measures to tackle the chaos of winning bids at low prices. Intensify joint disciplinary action, and include environmental protection companies with poor construction project quality and operation and maintenance agencies with low level of environmental protection facilities operation and management, and fraudulent behaviors on the list of untrustworthy joint punishment targets, and include them on the national credit information sharing platform, and pass "Credit China" Websites such as the "National Enterprise Credit Information Disclosure System" are published to the public.
Carry out special law enforcement actions in key industries, focusing on inspections of unorganized emissions of VOCs, waste gas collection, and operation of pollution control facilities. For inspection points, see Annex 4 and Annex 5. Encourage all localities to issue relevant documents to carry out unorganized emission monitoring and law enforcement. In accordance with the requirements of Appendix A of the Unorganized Emission Control Standards for Volatile Organic Compounds, monitor the unorganized emission concentration in the plant area to monitor the comprehensive control effect of the enterprise.
Strengthen technical training and law enforcement capacity building. Develop a training plan for law enforcement personnel, centering on the regulatory and standard system of VOCs management, pollution prevention policies, comprehensive governance tasks, the main emission links of key industries, emission characteristics, unorganized emission control requirements, waste gas collection and treatment technology, monitoring and control technical specifications, On-site law enforcement inspection points, etc., systematically carry out training. In the environmental law enforcement training, the VOCs law enforcement inspection is an important part of the competition, which effectively promotes the improvement of the actual combat capability of VOCs law enforcement. Improve the level of law enforcement equipment, equipped with portable VOCs rapid detector, VOCs leak detector, breeze anemometer, oil and gas recovery three detectors, etc.
?。ㄎ澹〧ully implement pollutant discharge permits. Accelerate the issuance of pollution discharge permits for furniture and other industries in accordance with the requirements of the classified management directory of pollution discharge permits for fixed pollution sources. For industries involving VOCs that have been issued, strengthen the supervision of the law enforcement of pollutant discharge permits to ensure that the pollutant discharging unit fulfills the responsibility of the environmental management subject of pollutant discharge with a certificate and discharge according to the certificate. Regularly announce the list of non-certified pollutant discharge units.
?。㊣mplement differentiated management. Comprehensively consider the production technology of the enterprise, the use of raw and auxiliary materials, the level of unorganized emission control, and the operation effect of pollution control facilities, etc., to establish industry benchmarks and guide industrial transformation and upgrading. Provide policy support to benchmark companies in areas such as response to heavy pollution weather, environmental law enforcement inspections, government green procurement, and corporate credit financing. Intensify joint punishments for companies with simple pollution control facilities and ineffective control of unorganized emissions.
Strengthen the response to heavy pollution weather. All localities should fully include VOCs-related companies in their emergency emission reduction lists for heavy pollution weather to achieve full coverage. For the main processes of VOCs emission, effective emergency emission reduction measures have been taken and implemented in specific production lines and equipment. According to the level of pollution emission performance, implement differentiated emergency emission reduction management. For companies that use organic solvents and other raw and auxiliary materials, end treatments that only use low-temperature plasma, photocatalysis, photooxidation, disposable activated carbon adsorption and other technologies or have open operations, increase the suspension of production and limit production. Encourage localities to implement seasonally differentiated VOCs management and control measures, and put forward further management and control requirements for companies that emit large amounts of aromatic hydrocarbons, olefins, and aldehydes in the seasons when O3 pollution is heavier.
Issued by the General Office of the Ministry of Ecology and Environment on June 26, 2019
attachment1:
Key area
Area name | Scope |
Beijing-Tianjin-Hebei and surrounding areas | Beijing, Tianjin, Hebei Province, Shijiazhuang, Tangshan, Handan, Xingtai, Baoding, Cangzhou, Langfang, Hengshui and Xiongan New District, Shanxi Province, Taiyuan, Yangquan, Changzhi, Jincheng, Shandong Province, Jinan, Zibo, Jining, Dezhou, Liaocheng, Binzhou, Heze City, Zhengzhou, Kaifeng, Anyang, Hebi, Xinxiang, Jiaozuo, Puyang City, Henan Province (including Dingzhou and Xinji City, Hebei Province, and Jiyuan City, Henan Province) |
Yangtze River Delta region | Shanghai, Jiangsu Province, Zhejiang Province, Anhui Province |
Fenwei Plain | Jinzhong, Yuncheng, Linfen and Luliang cities in Shanxi Province; Luoyang and Sanmenxia cities in Henan Province; Xi'an, Tongchuan, Baoji, Xianyang and Weinan cities in Shaanxi Province; and Yangling Demonstration Zones (including Xixian New District and Hancheng City in Shaanxi Province) |
Annex 2:
Key controlled VOCs substances
Category | Key controlled VOCs substances |
O3 precursor | M/p-xylene, ethylene, propylene, formaldehyde, toluene, acetaldehyde, 1,3-butadiene, trimethylbenzene, o-xylene, styrene, etc. |
PM2.5 precursor | Toluene, n-dodecane, m/p-xylene, styrene, n-undecane, n-decane, ethylbenzene, o-xylene, 1,3-butadiene, methylcyclohexane, n-nonane, etc. |
Malodorous substance | Methylamines, methyl mercaptan, methyl sulfide, dimethyl disulfide, carbon disulfide, styrene, cumene, phenol, acrylic esters, etc. |
Highly Toxic Substances | Benzene, formaldehyde, vinyl chloride, trichloroethylene, acrylonitrile, acrylamide, ethylene oxide, 1,2-dichloroethane, isocyanates, etc. |
Annex 3:
VOCs governance ledger record requirements
Focus industry | Key link | Ledger record requirements |
Petrochemical/ Chemical industry | Raw and auxiliary materials containing VOCs | The name of the raw and auxiliary materials containing VOCs and their VOCs content, the amount of purchase, usage, inventory, the method of recycling of raw and auxiliary materials containing VOCs, and the amount of recycling, etc. |
Sealing point | Detection time, leak detection concentration, repair time, repair measures taken, leak detection concentration after repair, etc. | |
Organic liquid storage | Name of organic liquid materials, storage tank type and sealing method, storage temperature, turnover volume, oil and gas recovery volume, etc. | |
Organic liquid loading | The name of the organic liquid material, the loading method, the loading amount, the amount of oil and gas recovery, etc. | |
Wastewater gathering, storage and treatment | Waste water volume, waste water collection and transportation methods (closed pipelines, ditches), the airtightness of waste water treatment facilities, the detection concentration of VOCs above the open liquid surface, etc. | |
Circulating water system | Detection time, TOC or POC concentration at the inlet and outlet of the circulating water tower, TOC or POC concentration at the inlet and outlet of heat exchange equipment containing VOCs, repair time, repair measures, TOC or POC concentration at the import and export after repair, etc. | |
Emissions under abnormal conditions (including start-up, shutdown and maintenance) | Start-up and shutdown, inspection and maintenance time, the recovery of VOCs-containing materials during the process of return, purging, and cleaning, the collection and treatment of VOCs waste gas, the output and collection of volatile unqualified products generated during the start-up phase, etc. | |
Torch discharge | Torch running time, fuel consumption, flare gas flow, etc. | |
Accident discharge | Type of accident, time, handling situation, etc. | |
Waste gas collection and treatment facilities | Monitoring data for the import and export of exhaust gas treatment facilities (exhaust gas volume, concentration, temperature, oxygen content, etc.). | |
Key parameters of waste gas collection and treatment facilities (see Annex 4). | ||
Purchase and disposal records of relevant consumables (absorbents, adsorbents, catalysts, heat storage bodies, etc.) of exhaust gas treatment facilities. | ||
Industrial coating | Production information | Basic production information such as main product output and total coating area. |
Raw and auxiliary materials containing VOCs | Names of VOCs-containing raw and auxiliary materials (coatings, curing agents, thinners, adhesives, cleaning agents, etc.) and their VOCs content, purchase volume, usage, inventory, recovery method and recovery volume of VOCs-containing raw and auxiliary materials, etc. | |
Waste gas collection and treatment facilities | Monitoring data for the import and export of exhaust gas treatment facilities (exhaust gas volume, concentration, temperature, oxygen content, etc.). | |
Key parameters of waste gas collection and treatment facilities (see Annex 4). | ||
Purchase and disposal records of relevant consumables (absorbents, adsorbents, catalysts, heat storage bodies, etc.) of exhaust gas treatment facilities. | ||
Packaging and Printing | Production information | Basic production information such as printing volume of main products. |
Raw and auxiliary materials containing VOCs | Names of VOCs-containing raw and auxiliary materials (inks, thinners, cleaning agents, fountain solutions, adhesives, composite glues, varnishes, coatings, etc.) and their VOCs content, purchase, usage, inventory, and recovery of VOCs-containing raw and auxiliary materials Method and amount of recycling, etc. | |
Waste gas collection and treatment facilities | Monitoring data for the import and export of exhaust gas treatment facilities (exhaust gas volume, concentration, temperature, oxygen content, etc.). | |
Key parameters of waste gas collection and treatment facilities (see Annex 4). | ||
Purchase and disposal records of relevant consumables (absorbents, adsorbents, catalysts, heat storage bodies, etc.) of exhaust gas treatment facilities. | ||
Oil storage depot | Basic Information | Oil types, turnover, etc. |
Send and receive oil | Oil delivery time, oil type, quantity, oil source; gas-liquid ratio detection time and results, repair time, repair measures taken, etc.; oil and gas collection system pressure detection time and results, repair time, repair measures taken, etc. | |
Oil and gas processing equipment | Inlet pressure, temperature, flow rate, outlet concentration, pressure, temperature, flow rate, repair time, repair measures taken, etc.; replacement time and amount of one-time adsorbent, regeneration cycle of regenerative adsorbent, replacement status, waste adsorbent storage, Disposal status, etc. | |
Leak point | Inspection methods, inspection results, repair time, repair measures taken, inspection results after repair, etc. | |
Gas station | Basic Information | Oil varieties, sales volume, etc. |
Refueling process | Gas-liquid ratio detection time and results, repair time, repair measures taken, etc.; oil and gas recovery system pipeline liquid resistance detection time and results, repair time, repair measures taken, etc.; oil and gas recovery system tightness detection time and results, repair time, Repair measures taken, etc. | |
Unloading process | Oil unloading time, oil type, oil source, oil unloading volume, oil unloading method, etc. | |
Oil and gas processing equipment | Replacement time and amount of disposable adsorbent, regeneration cycle and replacement status of regenerative adsorbent, storage and disposal status of waste adsorbent, etc. |
Annex 4:
Checkpoints of VOCs Governance in Industrial Enterprises
Source term | Inspection link | Check points |
VOCs materials store | Containers, packaging bags | 1.Whether the container or packaging bag is covered and sealed when it is not in use, and kept tightly closed; whether the waste packaging container that contains VOCs materials is covered and closed. 2.Whether the container or packaging bag is stored indoors or in a special place equipped with rain sheds, sunshade and anti-seepage facilities. |
Volatile Organic Liquid Storage Tank | 3.Whether the type of storage tank matches the real vapor pressure and volume of the stored materials, and whether there are problems such as damage, holes, and gaps. | |
4.Whether the edge sealing of the inner floating roof tank adopts high-efficiency sealing methods such as liquid immersion, mechanical shoe shape, etc. 5.Whether the outer floating roof tank adopts double sealing, and the one-time sealing adopts high-efficiency sealing methods such as immersion type and mechanical shoe shape. 6.Whether the openings (holes) of the floating pan attachments of the floating roof tank are airtight (except for sampling, metering, routine inspection, maintenance and other normal activities). | ||
7.Whether the fixed roof tank is equipped with VOCs treatment facility or gas phase balance system. 8.Whether the constant pressure of the breathing valve meets the set requirements. 9.Whether the attachment opening (hole) of the fixed roof tank is airtight (except for sampling, metering, routine inspection, maintenance and other normal activities). | ||
Storage, silo | 10.Whether the enclosure structure is complete and completely obstructed from the surrounding space. 11.Whether doors, windows, and other openings (holes) are closed (except when personnel, vehicles, equipment, and materials enter and exit, as well as exhaust ducts and vents established by law). | |
VOCs material transfer and transportation | Liquid VOCs material | 1.Whether to use pipelines for airtight transportation, or to use airtight containers or tankers. |
Powdery and granular VOCs materials | 2.Whether to use pneumatic conveying equipment, tubular belt conveyors, screw conveyors and other airtight conveying methods, or to use airtight packaging bags, containers or tank cars. | |
Volatile organic liquid loading | 3.Whether car or train transportation adopts bottom loading or top submerged loading. 4.According to the annual loading volume and the actual vapor pressure of the loaded materials, whether the VOCs waste gas is collected and treated in a closed manner, or connected to the gas phase balance system; if there is a vapor recovery device, check the vapor recovery volume. | |
Unorganized emissions of VOCs during the process | VOCs material feeding and unloading | 1.Whether the dosing process of liquid and powdery VOCs materials is airtight, or local gas collection measures are taken; whether the exhaust gas is discharged to the VOCs exhaust gas collection and treatment system. 2.Whether the unloading (discharging, discharge) process of VOCs materials is airtight, or local gas collection measures are taken; whether the waste gas is discharged to the VOCs waste gas collection and treatment system. |
Chemical reaction unit | 3.Whether the feed replacement exhaust gas, volatilized exhaust gas, reaction exhaust gas, etc. of the reaction equipment are discharged to the VOCs exhaust gas collection and treatment system. 4.Whether the openings (holes) of the reaction equipment such as the feed port, the discharge port, the inspection port, the stirring port, and the observation hole are closed when not in operation. | |
Separation and Refining Unit | 5.Whether the centrifugation, filtration, and drying process adopt closed equipment, or operate in a closed space, or take local gas collection measures; whether the exhaust gas is discharged to the VOCs exhaust gas collection and treatment system. 6.Whether the waste gas discharged from other separation and refining processes is discharged to the VOCs waste gas collection and treatment system. 7.Whether the mother liquor after separation and refining is collected in an airtight manner; whether the waste gas generated in the mother liquor storage tank (tank) is discharged to the VOCs waste gas collection and treatment system. | |
Vacuum system | 8.For dry vacuum pumps, whether the vacuum exhaust is discharged to the VOCs waste gas collection and treatment system. 9.For liquid ring (water ring) vacuum pumps and water (steam) jet vacuum pumps, whether the circulating tank (tank) of the working medium is airtight, and whether the vacuum exhaust and circulating tank (tank) exhaust are discharged to the VOCs waste gas collection and treatment system. | |
Ingredients processing and product packaging process | 10.Whether the process of mixing, stirring, grinding, granulating, slicing, briquetting and other ingredients, as well as the packaging (filling, sub-packing) of products containing VOCs, adopts closed equipment, or operates in a closed space, or adopts local gas collection measures ; Whether the exhaust gas is discharged to the VOCs exhaust gas collection and treatment system. | |
The use process of products containing VOCs | 11.In the process of blending, painting, printing, bonding, printing and dyeing, drying, cleaning, etc., products with a VOCs content greater than or equal to 10% are used. Whether to use closed equipment, or operate in a closed space, or take local gas collection measures; whether exhaust gas is exhausted To the VOCs waste gas collection and treatment system. 12.Production of organic polymers (synthetic resin, synthetic rubber, synthetic fiber, etc.) mixing/mixing, plasticizing/plasticizing/melting, processing and molding (extrusion, injection, pressing, calendering, foaming, spinning, etc.) During the process, whether to use closed equipment, or operate in a closed space, or take local gas collection measures; whether the exhaust gas is discharged to the VOCs exhaust gas collection and treatment system. | |
Other process | 13.When the equipment and its pipelines containing VOCs materials are started, shut down (vehicle), inspected, repaired, and cleaned, whether the remaining materials are cleaned during the return stage, and packed in a closed container; exhaust during the return process, cleaning and purging process exhaust Whether it is discharged to the VOCs waste gas collection and treatment system. | |
VOCs unorganized waste gas collection and treatment system | 14.Whether to run synchronously with the production process equipment. 15.With the use of an external air collecting hood, the VOCs unorganized emission position farthest from the opening surface of the exhaust hood is controlled to see whether the wind speed is greater than or equal to 0.3 m/s (the specific requirements of the industry shall be implemented in accordance with the corresponding regulations). 16.Whether the exhaust gas collection system is operating under negative pressure; if it is under positive pressure, whether there is leakage. 17.Whether the conveying pipeline of the exhaust gas collection system is airtight and undamaged. | |
Leakage of equipment and pipeline components | LDAR work | 1.If the number of enterprise sealing points is greater than or equal to 2,000, whether to carry out LDAR work. 2.Are pumps, compressors, agitators, valves, flanges, etc. leak tested at the prescribed frequency? 3.If a visible leakage phenomenon is found or the leakage concentration is exceeded, whether the leakage source should be repaired in accordance with the specified time. 4.Random spot checks on site, under the condition that no more than 100 sealing points are detected, it is found that more than 2 (not including) sealing points that are not within the repair period have visible leakage or exceed the recognized concentration of leakage, which is an illegal act. |
VOCs escape from open liquid level | Wastewater Gathering and Transportation System | 1.Whether it is transported by closed pipelines; if it is transported by trenches that are not covered and sealed, whether the concentration of VOCs above the wastewater surface exceeds the standard requirements. 2.Whether the inlet and outlet are separated from the ambient air. |
Wastewater storage, Processing facility | 3.If the wastewater storage and treatment facilities are open, the VOCs above the liquid level shall be tested to see if the concentration exceeds the standard requirements. 4.With a fixed top cover, whether the exhaust gas is collected to the VOCs exhaust gas collection and treatment system. | |
Open circulating cooling water system | 5.Whether to check the TOC or POC concentration in the circulating cooling water flowing through the inlet and outlet of the heat exchanger every 6 months; whether the leakage is found to be repaired and recorded in time. | |
Organized VOCs emissions | Exhaust pipe | 1.Whether the emission concentration of VOCs is stable and up to standard. 2.The workshop or production facility collects and emits waste gas. If the initial VOCs emission rate is greater than or equal to 3 kg/hour, and the key areas are greater than or equal to 2 kg/hour, whether the VOCs treatment efficiency meets the requirements; the raw and auxiliary materials used meet the national regulations on products with low VOCs content Except for. 3.Whether to install automatic monitoring facilities, whether the automatic monitoring facilities are operating normally, and whether they are connected to the ecological environment department. |
Waste gas treatment facility | Cooler/Condenser | 1.Whether the outlet temperature meets the design requirements. 2.Is there a phenomenon that the outlet temperature is higher than the inlet temperature of the cooling medium. 3.Condenser solvent recovery volume. |
Adsorption device | 4.Types of adsorbents and filling conditions. 5.Replacement time and amount of disposable adsorbent. 6.Regenerative adsorbent regeneration cycle and replacement status. 7.Storage and disposal of waste adsorbent. | |
Catalytic Oxidizer | 8.Catalytic (bed) temperature. 9.Electricity or natural gas consumption. 10.Catalyst replacement cycle and replacement status. | |
Thermal oxidation furnace | 11.Whether the combustion temperature meets the design requirements. | |
Scrubber/absorption tower | 12.Acid-base control type absorption tower, check the pH value of the washing/absorption liquid. 13.Adding period and amount of medicament. 14.Washing/absorption liquid replacement cycle and replacement volume. 15.Oxidation reaction type absorption tower, check the oxidation-reduction potential (ORP) value. | |
Ledger | Whether the enterprise records the ledger as required. |
Annex 5:
Key points of inspection and management of VOCs in storage, transportation and marketing of oil products
category | Inspection link | Check points |
Oil storage depot | Oiling stage | 1.Whether the tank car or railway tank car adopts bottom loading or top submerged loading. 2.Gas-liquid ratio, oil and gas collection system pressure, etc. |
Oil and gas processing equipment | 3.Whether there is an oil and gas disposal device. 4.Inspection frequency, oil and gas emission concentration, oil and gas treatment efficiency, import and export pressure. 5.Replacement time and amount of disposable adsorbent, regeneration cycle and replacement status of regenerative adsorbent, storage and disposal status of waste adsorbent, etc. | |
Oil and gas collection system | 6.Frequency and concentration of leak detection. | |
come on站 | Refueling stage | 1.Whether to use a gas recovery nozzle, whether the gas collecting cover of the gas gun is damaged, and whether the gas collecting cover is closely attached to the filling port of the gasoline tank when refueling at the gas station (check on-site refueling or view the video of the refueling area). 2.Whether there is a vapor recovery vacuum pump, whether the vacuum pump is running (open the tanker cover to check whether the equipment is running when refueling); whether the vapor recovery copper pipe is properly connected. 3.The gas-liquid ratio of the fueling gun, the liquid resistance of the oil and gas recovery system pipeline, the detection frequency of the oil and gas collection system pressure, the detection results, etc. |
Unloading stage | 4.Check the connection of the unloading oil and gas recovery pipeline (check the video of the unloading process). 5.Whether there is a separate oil and gas recovery pipe port in the unloading area, and whether there is a quick-sealing joint or a ball valve. | |
Oil storage stage | 6.Is there an electronic level gauge? 7.Whether there is gas leakage at the oil discharge port, oil gas recovery port, oil metering port, P/V valve and related pipelines, and whether there is obvious peculiar smell in the manhole. | |
8.Gas-liquid ratio, gas flow, pressure, alarm records, etc. | ||
Oil and gas processing equipment | 9.Replacement time and amount of disposable adsorbent, regeneration cycle and replacement status of regenerative adsorbent, storage and disposal status of waste adsorbent, etc. |