Jiangsu Province Cement and Coking Industry Ultra-low Emission Transformation Implementation Plan
Implementation Cement and Coking Industry Ultra-low Emission Release is an important measure to promote the green, low-carbon and high-quality development of the industry and to help fight the battle of defending the blue sky in depth. In order to implement the "Opinions of the Central Committee of the Communist Party of China and the State Council on Deeply Fighting the Strong Battle of Pollution Prevention and Control", "Action Plan for Continuous Improvement of Air Quality", "14th Five-Year Plan for Eco-environmental Protection in Jiangsu Province", "Action Plan for Deeply Fighting the Strong Battle of Heavy Pollution Weather Elimination, Ozone Pollution Prevention and Control and Diesel Truck Pollution Control in Jiangsu Province". To promote the ultra-low emission transformation of cement and coking industries with high quality, this plan is specially formulated in combination with the actual situation of our province.
1. General requirements
(1) Guided by Xi Jinping's socialist ideology with Chinese characteristics in the new era, the guiding ideology
thoroughly implements the spirit of the 20th National Congress of the Communist Party of China, comprehensively implements Xi Jinping's ecological civilization thought, and adheres to precise, scientific and legal pollution control. Promote the implementation of ultra-low emissions in cement and coking industries, improve the level of air pollution control in the whole process, promote the green, low-carbon and high-quality development of the industry, promote the continuous improvement of atmospheric environmental quality, achieve the synergy of pollution reduction and carbon reduction, provide strong support for the battle of pollution prevention and control, and better meet the people's expectations for a better life.
(2) The basic principle
is to insist on systematic improvement and synergy. We will comprehensively promote the transformation of ultra-low emissions in the cement and coking industries and the carbon emission reduction actions in the industries, optimize and adjust the structure of industries, raw materials, energy consumption and transportation, adhere to the combination of source prevention and control, process control and end treatment, and achieve the synergy of pollution reduction and carbon reduction.
Insist on highlighting key points and promoting distribution. With the improvement of atmospheric environmental quality as the core, the coordinated emission reduction of multi-pollutants such as nitrogen oxides and volatile organic compounds as the focus, and the comprehensive consideration of technical, economic and market conditions, the phased transformation task is determined.
Insist on classified management and comprehensive measures. According to the production and emission characteristics of the cement and coking industry, the index limits and measures requirements are put forward for the classification of organized emission, unorganized emission, material and product transportation and monitoring and control; the policies of finance, price, finance and environmental protection are comprehensively adopted to promote the implementation.
Adhere to the main body of enterprises and government guidance. Strengthen the main responsibility of enterprises, increase capital investment, strictly control the quality of projects, strengthen operation and management; better play the role of the government, form effective incentives and constraints, enhance service awareness, and create a fair competition, healthy and orderly development environment.
(3) The main objective
is to comprehensively promote the transformation, assessment and monitoring of ultra-low emissions in cement and coking industries in our province. By the end of 2025, cement and coking enterprises in the whole province will basically complete the transformation of ultra-low emission and clean production; by the end of 2027, cement and coking enterprises in the whole province will complete the transformation of ultra-low emission and evaluation and monitoring. New and expanded (including relocation) cement and coking projects in the province should reach the ultra-low emission level.
2. The ultra-low emission of
cement and coking enterprises refers to the organized and unorganized emission of air pollutants in all production links, as well as the transportation process, monitoring and control to meet the ultra-low emission requirements. Cement enterprises include cement clinker production enterprises and independent grinding stations (including cement enterprises producing special cement and co-processing solid waste). Production links include mining and transportation, crushing, grinding, batching, clinker calcination, drying, co-processing, and storage and transportation of materials and products. Coking enterprises include independent coking enterprises and steel and coke joint enterprises, and the production links include coal preparation, coking, coke quenching, coke treatment, gas purification, deep processing of chemical products, and storage and transportation of materials and products. See the attachment for the control indicators and measures.
3. Key tasks
(1) Optimizing and adjusting the industrial structure
, strictly implementing relevant laws, regulations and standards on safety, environmental protection, quality and energy consumption, and policies such as the Catalogue of Guidance for Industrial Structure Adjustment. In accordance with the law and regulations, backward production capacity with unsafe production safety, backward process equipment and substandard pollution emissions should be eliminated. We will strictly implement the policy of capacity replacement in the cement industry and resolutely curb new capacity in violation of regulations. Strict examination and approval of new construction, reconstruction and expansion projects, new construction, reconstruction and expansion projects should reach the ultra-low emission level and the advanced level of cleaner production, to ensure that the project filing, safety assessment, environmental assessment, emission permits, energy conservation review and other procedures are complete and complete, and the project construction meets the requirements of relevant laws, regulations and standards. Strictly implement the total emission control of major pollutants, the total energy consumption and intensity control, promote the implementation of the total carbon emission and intensity control, and effectively promote the optimization and upgrading of the industrial structure of cement and coking industries. Cement and coking enterprises or facilities listed in the provincial elimination and withdrawal plan may no longer require the implementation of ultra-low emission transformation, but should meet the requirements of relevant emission standards and complete the shutdown and withdrawal on time. Steel and coke joint ventures that have completed the ultra-low emission transformation should check the standards and tables, check leaks and fill vacancies to ensure that the coking process meets the requirements of this scheme.
(2) Orderly implementation of ultra-low emission
transformation in accordance with the overall requirements of the ultra-low emission transformation plan, all localities should grasp the rhythm and intensity, and promote the implementation of ultra-low emission transformation and assessment and monitoring of cement and coking enterprises with high quality. It is necessary to strengthen services and guidance for enterprises, help them rationally choose technical routes for transformation, and coordinate and solve major issues such as clean transportation.
Enterprises should select mature and applicable environmental protection technologies according to the conditions of the factory. High-efficiency electrostatic precipitator, bag-type dust collector, electric bag composite dust collector and other technologies can be used for dust removal, dry desulfurization, composite desulfurization and other technologies can be used for desulfurization, and selective non-catalytic reduction (SNCR), selective catalytic reduction (SCR), SNCR-SCR combined denitrification, activated coke and other technologies can be used for denitrification. To strengthen source control, cement kilns can be equipped with low-nitrogen burners, and low-nitrogen combustion technologies such as staged combustion and fine control of oxygen content in other decomposition furnaces can be adopted; coke ovens can adopt source control measures such as staged (multi-stage) combustion, waste gas circulation in the furnace, pressure regulation of single-hole coking chamber, and negative pressure coal charging. Cement enterprises should take effective measures to control ammonia escape, and the consumption of ammonia water for denitrification should be less than 3. Promote the cancellation of flue gas bypass. If it is really necessary to retain it for safe production, it should be closed and sealed in non-emergency situations, and strengthen supervision by installing automatic monitoring equipment and flowmeters. Inductive valves are encouraged to be installed in the bypass, and signals such as valve opening status and opening are connected to the central control system, and historical records are kept.
Unorganized emission control should adopt effective control measures such as sealing and sealing, rationally allocate waste gas collection facilities according to the principle of "collecting as much as possible", and optimize the collection air volume. Encourage the use of fully enclosed mechanized stock yards, silos, round warehouses and other material storage methods. Optimize the process flow, reduce the transfer links, reduce the material drop and shorten the transportation distance. Source control measures such as positive pressure sealing, brick joint grouting and ceramic welding repair are adopted to reduce the leakage of furnace wall. Effective measures shall be taken for coal charging in semi-coke ovens to control the escape of gas and encourage the utilization of waste heat. The high-concentration VOCs waste gas collected by various storage tanks (tanks, pools) and organic liquid loading points is connected to the pressure balance system or burned; VOCs waste gas with low waste gas concentration collected by desulfurization regeneration, ammonium sulfate crystallization, sulfur (paste) production, desulfurization waste liquid salt extraction, tar residue drying, production wastewater treatment, chemical deep processing and other facilities or workshops shall be treated by high-efficiency (combination) process, and shall be encouraged to be introduced into combustion devices as combustion-supporting air; Tar residue is encouraged to enter other links such as coal blending directly after being reduced by centrifugal drying.
Strengthen clean transportation transformation, encourage and support enterprises to effectively increase railway transport capacity by building or using existing special railway lines and connecting with trunk lines; for short-distance and in-plant transportation of materials, give priority to closed pipelines, tubular belt conveyors, belt corridors and other means of transportation. Enterprises should equip full-time personnel to strengthen transportation management, build access control and video surveillance systems, and establish electronic accounts for transport vehicles entering and leaving the factory, transport vehicles in the factory and off-road mobile machinery.
(3) Promote pollution reduction and carbon
reduction as a whole, encourage cement and coking enterprises to carry out pollution reduction and carbon reduction and cleaner production transformation as a whole in ultra-low emission transformation, and actively explore the technology of coordinated control of pollutants and greenhouse gases. Enterprises are encouraged to give priority to clean and low-carbon transport modes and build green supply chains.
Promote the substitution of non-carbonate raw materials in cement enterprises. On the premise of ensuring product quality, increase the proportion of calcium and magnesium-containing waste residue resources to replace limestone, and comprehensively reduce carbon dioxide emissions in the cement production process; increase the proportion of slag and fly ash industrial wastes, and reduce the clinker coefficient. Improve the quality and application level of cement products, and promote the reduction of cement use.We will actively promote fuel substitution and use cement kilns to co-dispose of solid waste instead of coal. Enterprises that use independent heat sources for drying will be encouraged to use clean energy such as natural gas and electricity. Carry out technical transformation of energy saving, pollution reduction and carbon reduction, strictly implement the energy consumption quota requirements of cement unit products, and clear the clinker production capacity below the energy efficiency benchmark level within the prescribed time limit, so as to strive to reach the energy efficiency benchmark level. We will accelerate breakthroughs in energy-saving and low-carbon technologies such as suspension boiling calcination of cement and efficient utilization of low-temperature waste heat, and promote energy-saving and carbon-reducing technologies and equipment such as low-resistance cyclone preheaters, high-efficiency firing, high-efficiency grate coolers and high-efficiency energy-saving grinding.
Guide the coking industry chain to extend downstream to high value-added fine chemical products. Tubular furnaces are encouraged to use steam heating or electric heating instead of gas heating, and pollution reduction and carbon reduction technologies such as waste heat recovery of riser, circulating ammonia water and waste heat recovery of primary cooler are popularized and applied. Give full play to the hydrogen-rich characteristics of coke oven gas and promote the direct reduction ironmaking project of coke oven gas reforming in steel and coke integrated enterprises. To carry out energy-saving and carbon reduction technology transformation and promote the application of advanced energy-saving technologies such as high-efficiency distillation and heat pump, existing coking enterprises need to reach the benchmark level of energy efficiency for clean coal utilization within the prescribed time limit and strive to reach the benchmark level. Measures for efficient and comprehensive utilization of coke oven gas are taken to strengthen the production scheduling management of gas pipe network and improve the utilization rate of gas. Promote efficient resource utilization technologies such as salt extraction and acid production from coke oven gas desulfurization waste liquid to solve the problem of waste pollution.
(4) Improve the level
of environmental management, establish and improve the environmental protection management organization of enterprises, and set up full-time environmental protection personnel. Establish management systems for overhaul and maintenance of environmental protection facilities, environmental monitoring, environmental protection supervision and assessment, and environmental protection contingency plan of enterprises. In accordance with the requirements of the technical specifications for pollutant discharge permits, the environmental management account shall be recorded in a standardized, accurate and complete manner, and the operation of production facilities and pollution control facilities shall be truthfully reflected.
Strengthen the management of ultra-low emission operation. Cement enterprises should ensure the synchronous operation of cement clinker production and denitration system, make good records of denitration agent procurement, daily inspection of consumption and maintenance of spray gun; take effective measures to control ammonia escape, such as reasonable control of denitration agent consumption, optimization of reaction temperature, reaction interval and residence time; Regular inspection of the operation of unorganized emission facilities can achieve precise control of unorganized emissions through intelligent and digital construction. Coking enterprises should strengthen thermal regulation to maintain stable production, establish regular inspection mechanism, strengthen the management of furnace door cleaning and leakage repair, reasonably set up capture devices according to the distance of dust-producing points, strengthen production organization management and equipment maintenance, reduce the frequency of accident maintenance of coke pushing and dust removal fans, coke oven chimney fans and gas blowers, and reduce pollutant emissions under abnormal conditions; Standardize the leak detection and repair (LDAR) of equipment and pipeline components, improve the fine management level of dynamic and static sealing points, and strengthen the dynamic analysis and early warning application of the integrated environmental management and control platform of the whole plant.
4. Policies and measures
(1) Implementing preferential tax policies. In accordance with the relevant provisions of the Environmental Protection Tax Law, enterprises that meet the requirements shall be given preferential tax treatment. If the emission concentration of taxable air pollutants is lower than 30% of the pollutant emission standards stipulated by the state and Jiangsu Province, the environmental protection tax shall be reduced by 75%; if it is lower than 50%, the environmental protection tax shall be reduced by 50%. We will implement the preferential policy of crediting enterprise income tax for investment in purchasing special equipment for environmental protection.
(2) Rewards and subsidies for special funds. The ultra-low emission transformation projects of cement and coking enterprises will be included in the central special funds for air pollution prevention and control and the provincial special funds for ecological environment protection, and will be subsidized according to regulations. Banking institutions are encouraged to provide credit support to enterprises for ultra-low emission transformation, support eligible enterprises to issue bonds for direct financing, and raise funds for ultra-low emission transformation and other fields.
(3) Implementing differentiated environmental protection management. To give full play to the leading and exemplary role of benchmarking enterprises, A-level performance rating can be carried out for cement and coking enterprises that have completed ultra-low emission transformation and publicized, which can be included in the exemption list of emergency control of heavy pollution weather and the positive list of supervision and law enforcement, giving priority to supporting enterprises to select green leading enterprises and arrange subsidies. For cement and coking enterprises that fail to complete the transformation of ultra-low emissions within the time limit, emergency emission reduction measures shall be strictly implemented in accordance with the requirements during the warning period of heavily polluted weather, and law enforcement and supervision shall be strengthened.
5. Organizational implementation
(1) Strengthen organizational leadership. The Provincial Department of Ecology and Environment, together with the Provincial Development and Reform Commission, the Department of Industry and Information Technology, the Department of Finance and the Department of Transportation, shall organize the implementation of this plan, and all relevant departments shall perform their duties, assume their responsibilities and cooperate closely to form a joint force, strengthen the guidance of local work, and coordinate and solve the difficulties and difficulties in the process of promotion in a timely manner. The ecological environment department shall, in conjunction with the relevant units, establish a management account for the transformation of ultra-low emissions in cement and coking enterprises. All localities should strengthen organizational leadership and do a good job in supervision, management and service. Each district and city shall formulate an ultra-low emission transformation plan for local cement and coking enterprises, determine the annual key transformation projects, refine the objectives and tasks, and specify the completion time, which shall be submitted to the Provincial Department of Ecology and Environment, the Department of Industry and Information Technology by the end of June 2024.
(2) Strengthen corporate responsibility. Enterprises are the main body responsible for the implementation of ultra-low emission transformation. They should strictly implement the relevant requirements of the state and provinces and municipalities, and strive to achieve the true attention of enterprise leaders, the true investment of funds, the implementation of real projects and the improvement of management level, so as to ensure that the tasks of ultra-low emission transformation and assessment and monitoring are completed on time and with high quality. Enterprises should strengthen the technical training of personnel, improve the internal environmental protection assessment and management mechanism, and realize the long-term continuous and stable operation of treatment facilities. In the process of construction and operation of environmental protection control projects, the relevant provisions of safety management should be strictly implemented, and the main responsibility of enterprises for safety production should be earnestly implemented.
(3) Strict assessment and monitoring. After one month of continuous and stable operation, enterprises can carry out evaluation and monitoring by themselves or by entrusting qualified monitoring institutions and competent technical institutions in strict accordance with the requirements of indicators and relevant technical documents. If the enterprise meets the ultra-low emission requirements steadily, the assessment and monitoring report shall be submitted to the local ecological environment department, industry and information technology department, and shall be publicized according to the relevant requirements of the Ministry of Ecology and Environment, and shall be subject to the supervision of the whole society. Industry associations are encouraged to play a bridge and link role in guiding enterprises to carry out ultra-low emission transformation and assessment and monitoring.
(4) Strengthen supervision and management. All localities should do a good job in routine supervision and law enforcement inspection, punish enterprises that discharge excessive pollutants and enterprises that discharge pollutants without certificates according to law, and severely crack down on illegal acts such as illegal discharge, fraud and unauthorized shutdown of environmental protection facilities according to law. For those who have completed the transformation of ultra-low emissions, a dynamic supervision and management account shall be established, and off-site supervision shall be carried out relying on remote monitoring and big data analysis; for those who cannot achieve ultra-low emissions steadily, a dynamic management list shall be adjusted in time, and relevant preferential policies shall be cancelled according to the circumstances.
(5) Strengthen propaganda and guidance. Do a good job in policy interpretation, publicize and promote the experience and practices of local and enterprises, create a good atmosphere of public opinion conducive to the development of ultra-low emission transformation, and enhance the sense of responsibility and honor of enterprises to carry out ultra-low emission transformation. Relevant departments should actively follow up relevant public opinion trends and respond to social concerns in a timely manner.
Cement and coking industry ultra-low emission transformation control indicators and measures requirements
I. Organized emission control indicators
Cement enterprises: cement kiln and kiln tail waste heat utilization system under the condition of 10% reference oxygen content. The hourly average emission concentrations of particulate matter, sulfur dioxide, nitrogen oxides and ammonia are not higher than 10, 35, 50 and 8 mg/m3 , respectively; The hourly average emission concentration of particulate matter, sulfur dioxide and nitrogen oxide shall not be higher than 10, 35 and 50 mg/m3 respectively for the dryer, drying mill, coal mill and cooler with independent heat source under the condition of reference oxygen content of 8%. Crushers in the process of mining, crushers and mills in the process of raw meal and pulverized coal preparation, storage and transportation of clinker, gypsum and mixed materials, cement grinding, storage, crushing, packaging, bulk, shipping and other production links. The hourly average emission concentration of particulate matter from other ventilation production equipment shall not be higher than 10 mg/m3 .
Coking enterprises: when the reference oxygen content of the coke oven chimney is 8%, the hourly average emission concentrations of particulate matter, sulfur dioxide, nitrogen oxides, non-methane total hydrocarbons and ammonia are not higher than 8, 30, 100, 50 and 8 mg/m3 , respectively; The hourly average emission concentrations of particulate matter, sulfur dioxide and nitrogen oxides from gas-fired facilities such as tubular furnaces are not higher than 10, 20 and 100 mg/m3 , respectively; The hourly average emission concentration of particulate matter and sulfur dioxide in coal charging and coke dry quenching shall not be higher than 10 and 50 mg/m3 respectively; the hourly average emission concentration of particulate matter and sulfur dioxide in coke pushing (discharging) shall not be higher than 10 and 25 mg/m3 respectively; The hourly average value of non-methane total hydrocarbon emission concentration of various storage tanks and loading facilities for cold drums, benzene storage tanks and tar in the reservoir area shall not be higher than 50 mg/m3 ; The hourly average value of non-methane total hydrocarbon emission concentration of phenol-cyanogen wastewater storage and treatment facilities shall not be higher than 10 mg/m3 ; The hourly average emission concentration of particulate matter from clean coal crushing, coke crushing, screening, transportation, ammonium sulfate crystallization and drying, and other ventilation production equipment shall not be higher than 10 mg/m3 .
2. Unorganized emission control requires
unorganized emission sources such as material storage, material transportation and production process to take effective control measures such as sealing and sealing on the premise of ensuring safe production. The unorganized emission control facilities shall operate normally synchronously with the production facilities, and there shall be no visible smoke and dust escaping from the dust-producing points and production facilities. The plant area is clean and tidy without dust and obvious odor.
Material storage: coal, coke, needle coke, asphalt, graphite, limestone, shale, mudstone, coal gangue and other blocky or sticky wet materials shall be stored in closed silos or closed stock yards (silos, warehouses, sheds) under the condition of safe production, and spray dust suppression devices shall be set in the closed stock yards. Powdery materials such as lime, raw meal, dry coal ash, slag powder, finished cement, dedusting ash and desulfurized ash shall be stored in closed silos and storage tanks, and dust suppression facilities shall be installed.Tar, crude benzene, methanol, phenol oil, anthracene oil, carbon black oil, light oil, wash oil and other organic liquids, tar residue, acid tar, crude benzene residue, wash oil residue, asphalt residue and other organic solid wastes and other VOCs materials in coking enterprises should be stored in a sealed manner, and the waste gas should be connected to the pressure balance system or burned. If the cement enterprise collaboratively disposes of solid wastes, its storage facilities shall be closed to ensure that the domestic garbage or sludge is stored in a negative pressure state; the air extracted from the storage facilities shall be introduced into the high temperature area of the cement kiln for incineration treatment, or discharged after being treated by other measures to meet the standards.
Material transportation: coal, coke, needle coke, asphalt, graphite, limestone, shale, mudstone, coal gangue and other blocky or sticky materials shall be transported by means of tubular belt conveyors and belt corridors; if truck transportation is really necessary, closed carriages shall be used, and dust removal or suppression measures shall be taken during loading and unloading. Powdery materials such as lime, raw meal, dry coal ash, slag powder, finished cement, dedusting ash and desulfurized ash shall be transported by pneumatic conveying equipment, tank trucks and other means in a sealed manner. Unloading, loading, batching and conveying of bulk raw materials and fuels shall be conducted in a sealed or enclosed manner under the condition of ensuring safety. The transport belt, bucket elevator, chute, etc. shall be fully enclosed, and the dust producing points such as each transfer and feeding port shall be equipped with gas collecting hood and high-efficiency dust remover, and the top of the warehouse shall be equipped with bag dust remover. In coking enterprises, sealing measures shall be taken for transfer and transportation of tar, crude benzene, methanol, phenol oil, anthracene oil, carbon black oil, light oil, wash oil and other organic liquids, tar residue, acid tar, crude benzene residue, wash oil residue, asphalt residue and other organic solid wastes and other VOCs materials. When loading volatile organic liquids such as crude benzene, methanol, phenol oil and light oil, bottom loading or top immersion shall be adopted. The unloading, transportation, preparation and storage of liquid ammonia and ammonia water shall be sealed, and ammonia leakage detection and control measures shall be taken; special closed tank trucks shall be used for transportation, and ammonia recovery or absorption and reuse devices shall be provided. High-pressure cleaning devices should be equipped at the factory area and the outlet of the material yard to wash the body, wheels and chassis of the transport vehicles. The plant area and surrounding roads shall be hardened, and measures such as cleaning and regular watering shall be taken to keep them clean.
Production process: When limestone, clinker, coal, coke, mixed materials and other materials are crushed in the plant, a gas collection hood shall be set at the feed inlet of the crusher, and a closed device shall be used at the discharge outlet, and dust removal facilities shall be provided. The connection between the feeding device before grinding, the dryer and the gas collecting hood of the cement enterprise shall be sealed, and the air locking device shall be installed at the discharge port and the ash outlet of the dust remover; the gas collecting hood shall be installed at the discharge port of the clinker cooler, and the dust removal facilities shall be provided. The cement kiln system shall be maintained at a slight negative pressure and inspected regularly. Coal-charging dedusting of conventional coke ovens adopts smoke guiding dedusting technology or single coking chamber pressure regulation or ground station dedusting technology, coke pushing adopts ground station dedusting technology, and the machine side furnace mouth should be equipped with waste gas collection and treatment devices; coal-charging, coke pushing and machine side furnace door of heat recovery coke ovens adopt ground station dedusting or vehicle-mounted dedusting technology; The semi-coke (semi-coke) carbonization furnace adopts a double-chamber double-gate feeder. The coal loading yard at the top of the furnace shall be closed, and equipment such as dust removal and waste gas collection shall be installed. The coke discharge shall be subject to the closure of transportation facilities and the collection and treatment of waste gas. Coke dry quenching process should be adopted in coking enterprises. Coke oven door, coal charging hole cover, riser cover, riser root, bridge pipe and valve body socket adopt sealing technology, and coke oven is equipped with raw gas automatic ignition and diffusion device. Leak detection and repair (LDAR) work was carried out in accordance with the provisions of the Standard for the Control of Unorganized Emission of Volatile Organic Compounds (GB 37822-2019). Gas ignition and emission devices shall be installed in areas such as gas purification and deep processing of chemical products, and the emitted gas shall be ignited in time and fully burned. The production wastewater of coking enterprises should be transported by closed pipelines or covered ditches, and the inlet and outlet should be isolated from the ambient air. Waste water pretreatment facilities such as storage, regulation, air flotation and oil separation, anaerobic tank and pre-aeration tank shall be covered and equipped with waste gas collection and treatment facilities. High-efficiency (combined) process shall be adopted for treatment, and it is encouraged to be introduced into the combustion device as combustion-supporting air. The fugitive emission control of VOCs in the open circulating cooling water system for gas purification and chemical product recovery process is required to meet the requirements of the Fugitive Emission Control Standard for Volatile Organic Compounds (GB 37822 — 2019).
3. Clean transportation requires that
the proportion of materials and products entering and leaving enterprises should not be less than 80% by clean means such as railways, waterways, pipelines, tubular belt conveyors and belt corridors, while the rest of the vehicles should be transported by new energy or vehicles with the Sixth National Emission Standard; Less than 80% can be replaced by new energy vehicles (the proportion of new energy vehicles will not be less than 60% by the end of 2025). New energy vehicles shall be used for in-plant transportation (vehicles meeting China VI emission standard can be used before the end of 2025); new energy shall be used for non-road mobile machinery in principle, and non-road mobile machinery without corresponding products shall meet China IV and above emission standards (non-road mobile machinery meeting China III emission standard can be used before the end of 2025). Special vehicles such as dangerous chemicals transportation can use vehicles with national emission standards of five or above (gas vehicles meet national emission standards of six).
4. Cement and coking enterprises that are required
to implement ultra-low emission transformation should achieve ultra-low emission requirements by comprehensively strengthening automatic monitoring of pollutant emissions, process monitoring, video monitoring and air quality micro-station monitoring. Continuous on-line monitoring system (CEMS) for flue gas emission should be installed at the main outlets of
cement kiln and kiln tail waste heat utilization system, cement kiln head (cooler), coal mill, cement mill, independent drying heat source, coke oven chimney, coal loading, push (out) coke, tube furnace and so on, which should be connected with the ecological environment department and checked and accepted. Automatic monitoring of ammonia emission shall be added to the waste heat utilization system of cement kiln and kiln tail, and automatic monitoring of non-methane total hydrocarbon and ammonia emission shall be added to the coke oven chimney (including hot standby chimney). Coking enterprises install VOCs monitoring equipment such as photoionization detector (PID) and hydrogen flame ionization detector (FID) in gas purification, oil depots and deep processing of chemical products, among which at least one set of FID is installed in gas purification area. Distributed control system (DCS) is installed in the flue gas treatment system of
cement kiln and kiln tail to synchronously record the key parameters of production process and operation of pollution facilities. Including feeding amount of cement kiln, coal feeding amount (kiln head burner, decomposing furnace), temperature of decomposing furnace, temperature of kiln end flue chamber, temperature of preheater outlet, CO concentration, amount of bulk waste entering the kiln for co-processing, amount of desulfurizer used, material (liquid) level of desulfurizer bin, amount of denitrifier used, material (liquid) level of denitrifier bin, flue gas temperature and NOX concentration at the inlet and outlet of reactor, air volume of dust remover, Fan current, exhaust gas volume, oxygen content, pollutant emission concentration, etc. Coking enterprises should install DCS in major production facilities such as coking, gas purification, deep processing of chemical products and pollution control facilities. Synchronously record coal charging time, coal charging amount, coke pushing (discharging) time, current of coal charging and coke pushing (discharging), operation record of dry coke quenching hoist, pressure curve of gas discharge port, planned temperature of primary cooler, current of gas fan, amount of crude benzene used, flow of externally supplied gas, combustion temperature of heating furnace, amount of denitration agent used, amount of desulfurizer used, air volume of dust remover, current of fan, Key parameters such as exhaust gas volume, oxygen content, pollutant emission concentration, exhaust gas flow of VOCs waste gas combustion facility and treatment temperature of combustion device.
In the mining of cement enterprises, the import and export of transport vehicles in the material yard, the blanking port of each process of cement clinker production, the conveying channel, the loading and unloading point of finished products and the import and export of shipment. High-definition video surveillance facilities are installed in key processes of coking enterprises, such as coke oven top, coke oven side and coke side (including semi-coke oven coke side), dry quenching loading device, coke screening building screening, coke loading area, coal storage and coke storage device entrance and exit. Total suspended particle (TSP) concentration monitors shall be set around the unorganized emission control facilities such as closed hoods and dust collection hoods at the main dust producing points in the plant area. Air quality monitoring micro-stations are set at the entrance and exit of raw materials and fuel storage, the entrance and exit of kiln head, kiln tail, cement grinding, coal and coke storage devices, coke oven area and other dust-prone areas and workshop entrances and exits, the intersection of the main road for material transportation in the plant, and the middle of the material transportation road with a length of more than 200 meters. Establish clean transport electronic account, install access control and video surveillance system at the entrance of transport vehicles entering and leaving the factory, and realize vehicle information collection, information verification, management of entering and leaving the factory, information statistics, photo collection, video surveillance, data storage and exchange.
Build an integrated environmental management and control platform for the whole plant to record the monitoring and control of organized and unorganized emissions, the operation of treatment facilities and clean transportation. CEMS system, DCS system, air quality monitoring micro-station data, TSP concentration monitoring data, clean transportation electronic account and other data shall be kept for at least five years, and high-definition video monitoring data shall be kept for at least one year.
