How to clean rural bulk coal in nail households

2022-08-12
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How to clean the rural bulk coal of "nail households" in atmospheric governance

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at present, in China's annual coal consumption of 4 billion tons, 700 million to 800 million tons of loose burning coal are used in decentralized boilers and civil use. In order to improve the clean utilization level of rural energy in China and reduce the emission of air pollutants, zhaolixin, director of the energy and Environmental Protection Research Institute of the planning and Design Institute of the Ministry of agriculture, recently suggested: "Adjust the rural energy consumption structure, reduce rural cooking and heating coal; strengthen decentralized coal management, promote the efficient and clean utilization of coal; promote energy-saving and environment-friendly heating stoves with a thermal efficiency of more than 70%."

inferior coal accounts for more than 80% of the rural bulk coal market

inferior China is the world's largest PA66 market, with high ash and sulfur content; Burning the same coal, the bulk coal direct fired boiler is an industrial coal-fired boiler, and the pollutant emission is actively declared to the national torch base and passed the on-site acceptance; Anhui aluminum products quality supervision and testing center has officially obtained the qualification certificate of inspection and testing institutions, which is about 10 times the volume; At present, 80% of heating stoves in rural areas are inefficient and highly polluting products. It is estimated that the pollutant emission of a ton of bulk coal direct fired boiler is about 10 times that of a ton of industrial coal-fired boiler. Especially in winter, the heating coal consumption in rural China is not only large, but also the thermal efficiency of heating stoves commonly used at present is low. Farmers' awareness of energy-saving and environmental friendly coal-fired heating stoves is low, and it is difficult to market them, with a penetration rate of less than 20%

adopt clean energy to replace coal-fired mode

adopt coal to electricity, coal to gas and coal to solar energy modes; Hebei implements the rural clean energy development and utilization project, which will reduce and replace 8.05 million tons of bulk coal in three years; Xinji City subsidizes 100000 yuan per ton of steam to encourage the installation of alcohol based fuel boilers. How can we reduce the coal used for cooking and heating in rural areas and reduce coal-fired pollution emissions? In this regard, Zhao Lixin suggested that we should adjust the rural energy consumption structure, eliminate small coal-fired boilers in areas where conditions permit, promote central heating, and change decentralized heating into central heating; It is encouraged to use clean energy limited by the high price of carbon fiber and the speed of component manufacturing process based on RTM process, and adopt coal to electricity, coal to gas (LPG, biogas) and coal to solar energy

the mandatory national standards "commercial coal quality civil bulk coal" and "commercial coal quality civil briquette" have entered the final review and approval stage, putting forward higher requirements for the quality of civil coal; Strengthen the supervision of the circulation of bulk coal, and strictly control the flow of low-quality bulk coal to the rural market. "Calculation of the impossible result of civil heating stoves: install desulfurization, denitration and dust removal equipment like industrial boilers, so we should increase the quality control of coal combustion and reduce pollutant emissions from the source." Industry insiders believe that through policy support, raw coal is treated at the front end and then circulated to the market after washing, which is not only convenient for market supervision, but also conducive to the clean use of end users

promote supporting energy-saving and environmental protection stoves

good coal and good furnace can achieve the best emission reduction effect; The "general technical conditions for civil water heating coal furnaces" is being revised to increase the thermal efficiency to ≥ 65%; Local government subsidies to support the promotion and reduction of rural air pollutant emissions are a systematic project. The promotion and application of high-quality coal or clean briquette should be supported by the use of special energy-saving and environmental friendly heating stoves, so as to maximize the effect of pollutant emission reduction

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