To solve the coal pollution is mainly the use of coal reduction, the use of clean coal
Recently attacked the north of 260,000 square kilometers of land in the haze, in the October 20 gradually "died down", but its comeback to the concerns did not weaken. In the recently held 2016 Sixth China Energy high-level dialogue, many industry sources said that coal-based energy development and utilization of serious environmental problems, especially a ton of coal burning emissions of five to ten tons of power plant coal Emissions of pollutants, it is recommended to speed up the reduction of coal, clean, alternative, with cogeneration and centralized heating and other alternative coal burning. However, there is controversy over whether or not to use natural gas to replace coal on a large scale. Ministry of Environmental Protection data show that since the beginning of October 17, affected by adverse weather conditions, China's Beijing-Tianjin-Hebei and the surrounding areas of some cities continued severe and above pollution. 17 to 18, Texas, Baoding, Shijiazhuang, Binzhou, Hengshui and other five city air quality for heavy pollution. As of 19:00 15, Shijiazhuang, Beijing, Baoding to achieve serious pollution, Taiyuan, Wuhai, Langfang, Tangshan, Xingtai, Binzhou, Dongying and other cities for serious pollution, heavy haze affected range of 260,000 square kilometers. Chen Liang, director of the Ministry of Environmental Protection's Foreign Cooperation Center, said that by 2015, the proportion of urban air quality exceeded 78.4% and the area of acid rain was about 729,000 square kilometers, accounting for 7.6% of the total land area. China's current coal consumption accounts for 50% of the global coal consumption, huge coal consumption led to China's sulfur dioxide, nitrogen oxides, atmospheric mercury emissions ranked first in the world. In the eastern and central regions, because the coal consumption is too concentrated, the air pollutant emissions per unit area are higher than the national average, the air pollution problem is the most serious, and with the increasing number of motor vehicles, air pollution problems become more complex, Beijing-Tianjin-Hebei, Yangtze River Delta, Pearl River Delta and other regional air pollution is serious. Among them, the most serious problem of scattered coal. According to the China Rural Energy Industry Association of energy-saving stoves professional committee and the Chinese stove network compilation of "China's heating stoves industry development report 2016" shows that China's annual consumption of about 3.8 billion tons of coal, of which about 300 million tons of civilian coal. Although the proportion of civil coal accounted for less than 10%, but basically all for the decentralized combustion, did not take dust, desulfurization and other environmental protection measures, its contribution to air pollution as high as 50%. In the face of a large number of pollution caused by coal, the solution is also frequently caused controversy. State-owned key enterprises of large enterprises chairman of the board of directors Ji Xiaonan said that the settlement of coal pollution is mainly the use of coal reduction, the use of coal clean, and the use of coal replacement, the three paths are not completely independent of each other, need to cooperate with each other, the key is to do To what extent, the current focus of debate, mainly focused on whether to use natural gas to replace large-scale coal. It is understood that China is currently promoting the ultra-low emission of coal-fired power plant renovation project, requiring 2020 before the power plant emissions of sulfur dioxide, nitrogen oxides and soot close to the level of natural gas power plants. In Chen Liang view, "black coal" can also change the green, coal clean use, you can do more environmentally friendly than natural gas. However, experts disagree with the proposed, in terms of environmental protection, natural gas compared to the advantages of clean coal no doubt. Coal is cleaner than natural gas, is contrary to the energy conservation theorem, is a pseudo concept. Ji Xiaonan said that the current discussion around this issue continues. He believes that natural gas relative to clean coal in reducing carbon emissions is undoubtedly more advantages, natural gas power generation also has greater flexibility, but its alternative to coal can significantly mitigate climate change remains to be seen. Although a large number of coal mining will exacerbate the shortage of water resources in China, but compared to natural gas, the extensive use of clean coal has helped to reduce the external dependence of China's energy. In 2015, China's natural gas dependence on foreign reach 32.7%, has more than 30% of the security cordon. This figure is expected to increase to 33.7% in 2016, and according to the Energy Development Strategy Action Plan (2014-2020), by 2020, China's natural gas dependence should be controlled within 33%. The inevitable choice should be to actively promote the coal "clean" at the same time, speed up the "reduction" and "alternative" pace, reduce coal consumption in the proportion of total energy consumption. "The impact of coal on the haze is the problem of scattered coal, scattered coal involving thousands of households, 1 ton of coal burning emissions equivalent to 5-10 tons of coal-fired power plant emissions of pollutants." Chen Liang that the management of coal The main measures include cogeneration and centralized heating alternative to coal burning, coal to gas, electricity and other clean energy. Among them, the air source and ground source heat pump technology is also an effective measure to replace the scattered coal, farmers can meet the winter heating demand and reduce pollutant emissions, to solve China's coal-based unreasonable energy structure provides a new direction and Thinking.