Since October 17, affected by unfavorable weather conditions, some cities in Beijing, Tianjin, Hebei and surrounding areas continue to experience severe and severe pollution.
Research by China Academy of Environmental Sciences shows that the concentration of PM2.5 in Beijing is significantly affected by the emission of motor vehicles and industrial coal and the secondary conversion of nitrogen oxides such as nitrogen and other pollutants. The PM2.5 in the sites of Tianjin and Langfang, The proportion of salt concentration is also higher, indicating that the impact of industrial coal emissions greater impact.
Jia Kang, a doctoral tutor at the Chinese Academy of Financial Sciences, told China Enterprise Daily in an interview: "China will still not be able to get rid of its dependence on coal resources in the next few years." In 2015, coal accounted for about China's primary energy consumption 64.4%. The total coal consumption is about 4 billion tons. However, there are many coal industries in industrial fields and a wide range of distribution. However, the utilization of low resources and high emission of pollutants is an important direction for the prevention and control of atmospheric pollution.
New technologies are emerging
From the implementation of "Atmosphere 10" since 2013, it can be seen that pollution has been mitigated to some extent through the implementation of various emission reduction policies and measures. Relevant data released by the CEC showed that compared with 1979, the emissions of soot and dust dropped by 93.3% in 2015 and 85.2% from the emission of sulfur dioxide in 2006, and the nitrogen oxides decreased by 82% compared with 2011.
Zhang Kaiyuan, chairman of Fresh Environment, told the "China Enterprise News" reporter: "It is mainly because the goal of" zero emission "has not yet been fully realized yet, but now environmental protection technologies are gradually being innovated." Most coal-fired enterprises adopt these environmental protection equipment.
According to Ren Guanping, secretary general of China Society of Environmental Science, new technologies for ultra-low emission have emerged in the large-scale and large-scale transformation of ultra-low-emission thermal power in China.
In Xintian Town, Wanzhou District, Chongqing Municipality, the first million-kilowatt thermal power generation project in Southwest China was put into operation in January 2015 as one of the largest and highest-rated coal-fired utility boilers in China The energy-saving emission reduction technology has attracted the attention of the industry. Therefore, the project proposed in the design scheme, desulfurization from the original tower using a single tower five spray layer, optimized for independent research and development by Chinese enterprises single tower integrated desulfurization dust purification technology (SPC-3D).
In February 2015, the Wanzhou District Environmental Monitoring Station of Chongqing monitored the emission of flue gas from Unit 1, and the concentrations of smoke, sulfur dioxide and nitrogen oxides were 4.5 mg / m3 and 9 mg / m3 respectively Mg / m3. Unit 2, put into operation in September of the same year, showed in May 2016 that the concentrations of smoke, sulfur dioxide and nitrogen oxides were 4.8 mg / m3, 7.74 mg / m3 and 13 mg / m3 respectively . So far the only one million units in Southwest China - two sets of 1.05 million kilowatts units emission targets better than gas emission standards, to achieve ultra-low emissions.
Ministry of Industry and Information Technology Department of Energy Saving and Comprehensive Utilization Division Gao Yunhu recently in a high-level forum on energy that industry is the main area of ​​energy consumption in China is also the main battlefield to promote energy consumption revolution. Vigorously raising the level of clean and highly efficient use of energy is an important measure to promote green manufacturing, which is conducive to advancing supply-side structural reforms, promoting industrial enterprises to reduce costs and increasing efficiency, and is conducive to strengthening prevention and control of air pollution. During the "Thirteenth Five-Year Plan" period, the industrial sector should vigorously promote the revolution in energy consumption by implementing structural energy conservation, strengthening energy-saving technologies, improving management and energy conservation, further improving industrial energy efficiency and cleanliness, accelerating the formation of a green and intensive production mode and continuously enhancing manufacturing Industry's international competitiveness.
All aspects with the need to be improved
Experts from China Southwest Electric Power Design Institute Co., Ltd., an expert in China Power Engineering Consulting Group, point out that to achieve ultra-low emissions, power plants should be tailored to local conditions, mature and reliable in technology, and economical in construction and maintenance costs. New projects should incorporate energy conservation and emission reduction ideas from the beginning of their design Choose science and technology route.
Kai-Yuan Zhang said that for a long time, industrial exhaust gas purification has been neglected, the general public to coal-fired as the culprit leading to air pollution. In fact, the use of coal does not mean emissions pollution, many companies hold environmental technology companies have achieved through technological innovation, ultra-clean industrial emissions. China has the technical strength in the end of tail gas treatment has been put into operation in many factories in the country reached the world's leading edge technology industry standards.
In the view of Ji Xiaonan, chairman of the state-owned key supervisory board, solving coal pollution mainly involves the reduction of coal use, clean coal use, and the substitution of coal use. These three paths are not completely independent of each other and need to be used in conjunction with each other. The key is To what extent.
It seems that the coal-fired power plant to achieve ultra-low emissions has been a "slogan" to become a real landing project, but is still facing the traditional enterprise energy-saving emission reduction slow transformation and other issues, the main reason is that the transformation cost is still high, while the other coal Electricity price fluctuations also affect the cost of running the business. Zhang Hua-tang, dean of Tsinghua Development Research Institute of Hebei Province, believes that with the continuous promotion of cooperation between research institutes and enterprises and the government, more and more innovative technologies will be applied in the field of ultra-low emission of coal-fired power. The technology in China tends to be lower in the world Leading the way, in the institutional mechanisms, laws and regulations continue to refine the circumstances, the full realization of ultra-low emissions will no longer be just the goal.
In September 2014, the National Development and Reform Commission, the Ministry of Environmental Protection and the Bureau of Energy issued the Action Plan on Upgrading and Upgrading Coal-fired Energy Conservation and Emission Reduction (2014-2020). In December 2015, the three departments jointly issued the " Ultra-low emissions and energy-saving work program. " By 2020, the average coal consumption will be lower than 310 g / kWh after the active coal-fired generating units are transformed.
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