The sound of heating and aggravating smog has long been known. Many places in the north have already begun to explore the adjustment of heating energy structure and try to use clean energy such as oil, electricity and gas. However, the reporter found that due to the high cost of clean energy heating, the risk is high and the promotion is difficult. The cost is high, and government subsidies promote the financial burden. According to Cui Hongsheng, head of the clean coal utilization project of Shenyang Coal Group, according to the analysis of operating costs, the fuel heating cost is 5 times that of coal powder, the gas heating cost is 2.5 times that of coal powder, and the heating cost is 1.8 times that of coal powder. The economy is poor, heating companies can only rely on government subsidies to maintain operations, bringing huge financial pressure to the government. Xingtai, Hebei Province launched the “Gasification Xingtai†project this year. Before the heating period, it will realize “coal to gas†for 30,000 households in the urban area and surrounding areas. It is planned to implement “coal†in five key counties and key towns around the city by 2016. Change the gas." Wang Liqian, chief of the atmospheric department of Xingtai Environmental Protection Bureau, said that the high cost is currently the main constraint factor. The urban central heating cost is 18 yuan per square meter, and it is increased to 30 yuan after the gas is changed. Moreover, many county towns have weak infrastructure and there are still problems in pipe network coverage. Governance coal to gas, etc., the Hebei government at all levels invest a lot of capital, grassroots worry about for a long time can not afford to go up. “Since 2012, Shijiazhuang City has subsidized 500 million yuan to promote clean energy heating every year,†said Liu Wendong, director of the Heat Management Center of Shijiazhuang City. New energy heating has become a hot spot for letters and visits, and it is difficult to promote high-risk promotion. The reporter found that there are hidden dangers of people's petitions in the supply of new energy such as gas. After implementing the gas-fired boiler heating reform in some places in Hebei, the residents still charge the coal-fired central heating price, and the excess cost is borne by the real estate development enterprise. But once the real estate company is unwilling to pay, it may cause a gas outage. Moreover, the gas heating price is high and the temperature is low. It can be as good as 18 to 9 degrees. The third phase of the Xihuayuan District of Taiyuan City is an electric heating community. As early as the beginning of this year, the residential area was exposed to three times the heating cost per square meter, causing residents to be dissatisfied. Although the problem of heat price was temporarily resolved under the coordination of the government, residents in the community worried that electric heating would frequently trip and affect the quality of heating. The large-scale promotion of secondary energy represented by electricity is likely to increase energy consumption. For electric heating, Chen Hairong, deputy chief engineer of Guodian Shenyang Thermal Power Plant, said that electricity is secondary energy, and the power is coal, gas, wind energy, nuclear energy, etc. Electric heating cannot completely solve the pollution problem. If coal is used to generate electricity and then use electric heating, it will not solve the problem of coal-fired pollution, and may even increase energy waste due to secondary conversion. Relevant experts pointed out that in recent years, based on energy conservation and emission reduction considerations, some places in China have experienced a wave of cancellation and replacement of coal. However, under the existing conditions of “rich coal, lean oil and less gas†in China, we still have to see that coal will occupy the main position of China's energy structure for a long time. In addition, the clean energy heating is facing many obstacles, and the future energy saving and emission reduction should be based on the application of clean coal burning technology. In fact, there are already more mature clean coal technologies in the world, which can be directly introduced for my use. Jiang Fengchen, deputy chief engineer of Shenyang Coal Group, said that Germany's energy structure is also lean, oil, gas and coal. In order to solve the problem of air pollution, Germany developed the clean utilization technology of pulverized coal combustion in the early 20th century, until the 1960s and 1970s. Germany has formed a complete industrial chain in various aspects such as pulverized coal preparation, warehousing, pulverized coal combustion and flue gas treatment. “This new high-efficiency pulverized coal boiler heating system no longer burns coal directly, but processes the coal into flour-like pulverized coal.†Cui Hongsheng, head of the clean coal utilization project of Shenmei Group, said that the combustion efficiency of the traditional chain boiler is 65%, and the combustion efficiency of the high-efficiency pulverized coal boiler is over 90%. It is conservatively estimated that achieving the same calorific value can directly reduce the amount of coal burned by 25%, which reduces pollutant emissions and is supplemented by environmentally friendly equipment to achieve clean emissions. In addition, the transportation and storage of pulverized coal needs to be completely closed, which also reduces dust pollution. “This technology has increased the process of milling, but due to the increased efficiency of coal combustion, the amount of coal burned has decreased, and heating costs have not increased.†Qin Yuzhen, a professor at the Institute of Combustion Engineering at Harbin Institute of Technology and an academician of the National Academy of Engineering, believes that high-efficiency pulverized coal combustion is an economically viable way to solve environmental pollution problems. Not only achieve low-cost energy-saving emission reduction, but also because high-efficiency pulverized coal combustion technology provides conditions for the massive use of coal, providing a good opportunity for coal mine transformation. In addition, due to the small size of the pulverized coal boiler, there is no need for the coal yard slag yard, the boiler room occupies a large area, and a large amount of land can be replaced for other purposes or urban greening to completely improve the city's main functions. Although this emission reduction technology is mature and low in cost, the promotion is not smooth. Relevant experts pointed out that the most important promotion problem of this technology is that there is a low willingness to reform the boilers of heating enterprises. The key to reducing coal-fired pollution in the future is to increase environmental protection law enforcement inspections and appropriately distribute technical reform subsidies while promoting centralized heating. In Shenyang, Guodian Shenyang Thermal Power Plant, Shenyang Jinshan Energy Co., Ltd. Jinshan Thermal Power Branch and other large state-owned cogeneration enterprises are key monitoring enterprises of environmental protection departments, not only using high-efficiency coal-fired boilers such as circulating fluidized bed and coal powder, but also equipped with environmental protection equipment. Complete and monitored by the environmental protection department in real time. According to Cui Hongsheng, the person in charge of the clean coal utilization project of Shenmei Group, compared with small boilers, large-scale thermoelectric enterprises consider the efficiency of coal combustion efficiency even if they do not use high-efficiency pulverized coal combustion technology. To solve the problem of heating and coal burning, on the one hand, the government needs to speed up the heating boilers to “small and largeâ€, and promote heating and boilers to clean coal-fired technology through appropriate subsidies; on the other hand, it is necessary to increase environmental protection law enforcement inspections and environmental protection standards. Independent technical reform of heating enterprises. The product is used as the plasticizer for solid propellants and their cladding layers, and also as the cold-resistant plasticizer for other polymers. Dibutyl Sebacate,Dibutyl Sebacate 99%,Dibutyl Sebacate Dbs Cling Film,Dibutyl Sebacate Dbs Plastic Articles Dongying Kexing International Trade Co., Ltd , https://www.kxiechem.com
Clean coal technology promotion is imperative
According to the results of the environmental protection comprehensive inspection conducted by the Ministry of Environmental Protection on 22 cities (districts) in North China, a common cause of smog is “one coal aloneâ€. In addition to Beijing and Tianjin, the energy consumption structure of coal in North China The proportion is nearly 90%. The heating season is the peak period of coal burning. How to reduce smog in the case of coal is still the main energy source for heating in the future has become the focus of attention. Relevant experts and enterprises suggest that in the case that coal is still in the leading position of China's energy structure, it is imperative to speed up the opening of all key joints of high-efficiency clean coal technology.