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Electric floor heating is used in the north to gradually realize 'no coal' energy saving and environmental protection
In the past, coal was used for heating in northern China, especially in rural areas, and the large amount of sulfur dioxide and dust particles produced easily caused air pollution. In order to improve air quality, clean energy transformation projects such as 'coal to electricity' electric floor heating, 'coal to gas' and other clean energy transformation projects are being carried out in the north. The proportion of clean heating in Beijing is high in Beijing, and the task of 'coal-to-clean energy' in 700 villages has been over-fulfilled. Within this year, the six districts of the city and the southern plains will be basically 'free of coal'. The clean energy transformation of coal-fired boilers with more than 10,000 steam tons and the low-nitrogen treatment of gas-fired boilers with more than 19,000 steam tons have been completed. It is reported that in the heating season of 2017 to 2018, Beijing’s new heating area was 30 million square meters, and the total heating area reached 840 million square meters. This year, the proportion of clean energy heating in the city’s heating can reach more than 97%. It is not just Beijing that has changed. Eight of the 11 cities in Shanxi, a major coal province, have designated coal-free zones. While strictly controlling the use of coal, they have accelerated the replacement of electricity and natural gas for heating; After oil-water separation of 80 degrees of oil production wastewater is used to heat residential communities; in Shandong, the Zibo power supply department began to promote ground-source heat pumps in residential communities to extract the temperature of underground soil to participate in heating. 1 kWh of electricity can achieve the efficiency of 4 kWh. The effect of clean energy is beginning to show. Clean energy, that is, green energy, refers to energy that does not emit pollutants and can be directly used in production and life. It includes nuclear energy and 'renewable energy.' In March of this year, the last large-scale coal-fired unit of Huaneng Beijing Thermal Power Plant shut down, marking that Beijing's local power generation has entered a coal-free era. In recent years, with Beijing’s vigorous implementation of the “coal-to-electricity” and “coal-to-gas” projects, the consumption of natural gas has increased rapidly. In 2016, the consumption of natural gas has reached 16 billion cubic meters, of which more than 60% is used for heating. In the past, nearly one-quarter of PM2.5 in Tianjin came from coal-burning, and prevention and control of coal-burning pollution was the top priority for air pollution control. To this end, Tianjin has upgraded the high-voltage power grid, vigorously promoted the 'coal-to-electricity' project, and replaced coal with clean heating power. Vigorous renovation and vigorous promotion of clean energy have made air treatment effects begin to appear. Li Ganjie, Minister of Environmental Protection, stated that the unfavorable situation of the average PM2.5 concentration of Beijing-Tianjin-Hebei and surrounding cities from January to February this year increased by 23.5% year-on-year has been fully reversed, and from March to November 15th, a year-on-year decrease of 9.8%; Beijing The PM2.5 concentration has been lower than 60 micrograms/m3 for 7 consecutive months, reaching a better level in recent years. The goal of 'non-coalization' can be expected. Recently, the Beijing-Tianjin-Hebei three places jointly issued and implemented the 'Beijing-Tianjin-Hebei Energy Coordinated Development Action Plan (2017-2020)Regarding the management of loose coal, the three places will strengthen coal use guidance, strictly implement commercial coal quality standards, and actively promote the application of advanced coal processing technology. By 2020, Beijing’s plain areas will basically be “free of coal”; except for the use of anthracite briquette in mountainous areas in Tianjin, the heating bulk coal in other areas will be basically cleared; in Hebei’s plains and rural areas, heating bulk coal will be basically cleared, Shanba The total amount of coal used for heating in rural areas in remote areas is controlled within 8 million tons. According to incomplete statistics from the National Energy Administration, more than 4 million households in 28 cities in Beijing-Tianjin-Hebei and surrounding areas have achieved clean heating through various methods. At the same time, the 'Clean Heating Plan for Northern Regions in Winter' jointly compiled by ten national ministries and commissions will be issued soon. In the next five years, funds from all parties will be guided to participate in clean heating construction through multiple channels, and a complete clean heating industry system will be gradually established. The goal of 'coalification' is gradually becoming a reality.
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