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Air pollutant control and strategy in coal-fired power industry for promotion of China’s emission reduction

Frontiers in Energy 2019年第2期13卷 307-316页

作者： Weiliang WANG Bo LI Xuan YAO Junfu LYU Weidou NI Key Laboratory for Thermal Science and Power Engineering of the Ministry of Education Department of Energy and Power EngineeringTsinghua University Beijing 100084 China Electric Power Planning and Engineering Institute Beijing 100120China Beijing Guodian Longyuan Environmental Engineering Co. Ltd. Beijing 100084China

coal-fired power industry has always been the major power source in China. As coal-fired power industry consumes around a half of China’s coal production, it is always thought to be a big air pollutant emission source. As more and more strict legislations in coal-fired power industry have been issued by the government, the emission performance in coal-fired power industry has been drastically reduced *** on a brief review of the development of emission control in China’s coal-fired power industry, the affecting mechanism among the development of installed capacities of emission control device, pollutant emission, and emission performances in coal-fired power industry is studied. According to a systematic study on the development of emissions of classified categories, the role of coal-fired power industry as a pollutant source is *** is found that, coal- fired power industry has contributed the most to China5S emission reduction, and the barycenter of air pollutant emission has been transformed to other high energy consumption industries,like heat, iron/steel, and *** some development strategies are suggested, such as maintaining the current emission standard in coal-fired power industry;expending the coal-fired power emission standards to categories of heat generation and supply, nonmetallic mineral production and ferrous metals smelt-ing and processing;and controlling other heavy metal by consulting the method of Hg control.

关键词： coal-fired power industry energy intensive industries pollutant emission control NOx SO2 soot

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An overview of the development history and technical progress of China's coal-fired power industry

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Frontiers in Energy 2019年第3期13卷 417-426页

作者： Weiliang WANG Zheng LI Junfu LYU Hai ZHANG Guangxi YUE Weidou NI Key Laboratory for Thermal Science and Power Engineering of Ministry of Education Department of Energy and Power EngineeringTsinghua UniversityBeijing 100084China

As the main power source of China, coalfired power industry has achieved a great progress in installed capacity, manufacturing technologies, thermal efficiency, as well as pollutant control during the past century. With the fast development of renewable energies, coal-fired power industry is experiencing a strategic transformation. To specify the development of coal-fired power industry, its development history is reviewed and the technical progresses on aspects of thermal efficiency, pollutants control and peaking shaving capacity are discussed. It is concluded that the role of China's coal-fired power source would be transformed from the dominant position to a base position in power source structure. Considering the sustainable development of coal-fired power industry in energy conservation, emission control, and utilization of renewable energies, it is suggested that the national average thermal efficiency should be improved by continual up-gradation of units by using advanced technologies and eliminating outdated capacity. Moreover, the emission standard of air pollutants should not be stricter any more in coal-fired power industry. Furthermore, the huge amount of combined heat and power (CHP) coal-fired units should be operated in a decoupled way, so as to release more than 350 GW regulation capacity for the grid to accept more renewable energy power.

关键词： coal-fired power development strategy eliminating outdated capacity peak shaving emission reduction renewable energy

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Thermodynamic Analysis and Conceptual Design for Partial coal Gasification Air Preheating coal-fired Combined Cycle

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Journal of Thermal Science 2004年第1期13卷 85-90页

作者： Yue Xu Yining Wu Shimin Deng Shirang Wei Energy and Power Engineering School of Xi’an Jiaotong University Xi’anChina710048 Thermal Power Research Institute State Power CorporationXi’an China710032

The partial coal gasification air pre-heating coal-fired combined cycle (PGACC) is a cleaning coal power system, which integrates the coal gasification technology, circulating fluidized bed technology, and combined cycle technology. It has high efficiency and simple construction, and is a new selection of the cleaning coal power systems. A thermodynamic analysis of the PGACC is carried out. The effects of coal gasifying rate, pre-heating air temperature, and coal gas temperature on the performances of the power system are studied. In order to repower the power plant rated 100 MW by using the PGACC, a conceptual design is suggested. The computational results show that the PGACC is feasible for modernizing the old steam power plants and building the new cleaning power plants.

关键词： coal gasification thermodynamic analysis coal-fired combined cycle clean coal technology.

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Research on solar aided coal-fired power generation system and performance analysis

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Science China(Technological Sciences) 2008年第8期51卷 1211-1221页

作者： YANG YongPing CUI YingHong HOU HongJuan GUO XiYan YANG ZhiPing WANG NinLing Beijing Key Laboratory of Safe and Clean Energy Technology North China Electric Power UniversityBeijing 100026China

Integrating solar power utilization systems with coal-fired power units, the solar aided coal-fired power generation (SACPG) shows a significant prospect for the large-scale utilization of solar energy and energy saving of thermal power units. The methods and mechanism of system integration were studied. The parabolic trough solar collectors were used to collect solar energy and the integration scheme of SACPG system was determined considering the matching of working fluid flows and energy flows. The thermodynamic characteristics of solar thermal power generation and their effects on the performance of thermal power units were studied, and based on this the integration and optimization model of system structure and parameters were built up. The integration rules and coupling mecha- nism of SACPG systems were summarized in accordance with simulation results. The economic analysis of this SACPG system showed that the solar LEC of a typical SACPG system, considering CO2 avoidance, is 0.098 $/kW·h, lower than that of SEGS, 0.14 $/kW·h.

关键词： solar thermal power generation coal-fired power plant system integration performance analysis

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Experimental research on influencing factors of wet removal of NO from coal-fired flue gas by UV/H_2O_2 advanced oxidation process

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Science China(Technological Sciences) 2010年第7期53卷 1839-1846页

作者： LIU YangXian, ZHANG Jun, SHENG ChangDong, ZHANG YongChun & ZHAO Liang School of Energy & Environment, Southeast University, Nanjing 210096, China School of Energy & Environment Southeast University Nanjing China

Wet removal of NO from coal-fired flue gas by UV/H2O2 Advanced Oxidation Process (AOP) were investigated in a self-designed UV-bubble reactor. Several main influencing factors (UV intensity, H2O2 initial concentration, initial pH value, solution temperature, NO initial concentration, liquid-gas ratio and O2 percentage content) on the NO removal efficiency were studied. The results showed that UV intensity, H2O2 initial concentration, NO initial concentration and liquid-gas ratio are the main influencing factors. In the best conditions, the highest NO removal efficiency by UV/H2O2 advanced oxidation process could reach 82.9%. Based on the experimental study, the influencing mechanism of the relevant influencing factors were discussed in depth.

关键词： UV/H2O2 NO coal-fired flue gas AOP wet removal

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Characteristics and composition of particulate matter from coal-fired power plants

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Science China(Technological Sciences) 2009年第6期52卷 1521-1526页

作者： LIU XiaoWei XU MingHou YAO Hong YU DunXi ZHANG ZhongHua LüDangZhen State Key Laboratory of coal Combustion Huazhong University of Science and TechnologyWuhan 430074China

Measurements of the characteristics of particulate matter(PM)were performed at the inlet and outlet of the electrostatic precipitators(ESP)of four boilers in two full-scale pulverized coal power *** was collected with a 13-stages low-pressure-impactor(LPI)having aerodynamic cut-off diameter ranging from 10.0 to 0.03μm for a size-segregated *** properties of PM including its con-centration,mass size distribution,emission characteristics,percent penetration of PM through ESP and elemental composition were *** experimental results indicate that,in all the cases the mass size distribution of PM10 had typical ***1 contained up to 1.15wt% of the total particle(TP)generated in the ***2.5 contained about 2wt%―7wt% of the TP and PM10 contained about 4wt%―19wt% of the *** additive limestone used for desulphurization as sorbent besides PM generated from coal combustion,there was new PM generated from *** as a func-tion of particle diameter had a clear peak in particle size ranging from 0.2 to 0.6μ*** in the submicrometer size range were much more difficult to be collected with ESP than larger ***-tributions of individual elements within PM10 were different.

关键词： particulate matter coal-fired characteristic penetration

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INTRODUCTION TO INCONEL ALLOY 740: AN ALLOY DESIGNED FOR SUPERHEATER TUBING IN coal-fired ULTRA SUPERCRITICAL BOILERS

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Acta Metallurgica Sinica(English Letters) 2005年第4期18卷 479-488页

作者： S.J. Patel Special Metals Corporation Huntington WV 25705 USA

Chinese utilities as well as those worldwide are facing increased demand for additional electricity, reduced plant emissions and greater efficiency. To meet this challenge will require increasing boiler temperature, pressure and coal ash corrosion resistance of the materials of boiler construction of future coal-fired boilers. A new nickel-based tube alloy, INCONEL^R alloy 740, is described aiming at meeting this challenge. Emphasis will be on describing the alloy＇ s mechanical properties, coal-ash and steam corrosion resistance. Microstructural stability as a function of temperature and time is addressed as well as some of the early methodology em- ployed to arrive at the current chemical composition.

关键词： ultrasupercritical boiler tubing INCONEL coal-fired

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Progress in Research on 20 MWt coal-fired MHD Slagging Combustor

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High Technology Letters 1996年第1期2卷 94-98页

作者：魏启东 Thermoenergy Engineering Research Institute Southeast UniversityNanjing 210018P.R.China

In this paper a brief introduction on design features,process of hot-fire check out testsand typical testing results of a 20 MWt coal-fired MHD slagging combustor is *** basis of the testing results we conclude that all the design requirements of the combustorare *** on the experimental results is also *** reasons that causeslower rate of slag rejection are discussed,and the ways of raising slag rejection rate are con-sidered.

关键词： coal-fired MHD Slagging combustor

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Progress and prospects of innovative coal-fired power plants within the energy internet

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Global Energy Interconnection 2019年第2期2卷 160-179页

作者： Yongping Yang Chengzhou Li Ningling Wang Zhiping Yang National Research Center for Thermal Power Engineering and Technology North China Electric Power University

The development of electrical engineering and electronic, communications, smart power grid, and ultra-high voltage transmission technologies have driven the energy system revolution to the next generation: the energy internet. Progressive penetration of intermittent renewable energy sources into the energy system has led to unprecedented challenges to the currently wide use of coal-fired power generation technologies. Here, the applications and prospects of advanced coal-fired power generation technologies are analyzed. These technologies can be summarized into three categories:(1) large-scale and higher parameters coal-fired power generation technologies, including 620/650/700 oC ultra-supercritical thermal power and double reheat ultra-supercritical coal-fired power generation technologies;(2) system innovation and specific, highefficiency thermal cycles, which consist of renewable energy-aided coal-fired power generation technologies, a supercritical CO_2 Brayton cycle for coal-fired power plants, large-scale air-cooling coal-fired power plant technologies, and innovative layouts for waste heat utilization and enhanced energy cascade utilization;(3) coal-fired power generation combined with poly-generation technologies, which are represented by integrated gasification combined cycle(IGCC) and integrated gasification fuel cell(IGFC) technologies. Concerning the existing coal-fired power units, which are responsible for peak shaving, possible strategies for enhancing flexibility and operational stability are discussed. Furthermore, future trends for coal-fired power plants coupled with cyber-physical system(CPS) technologies are introduced. The development of advanced, coal-fired power generation technologies demonstrates the progress of science and is suitable for the sustainable development of human society.

关键词： En ergy In ternet coal-fired Power Gen eration Flexibility Cyber-physical system Smart power plant

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Development of Carbon Dioxide Capture Technologies in coal-fired Power Plants

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Electricity 2010年第4期21卷 50-54页

作者： Gao Shiwang, Xu Shisen, Liu Lianbo, Niu Hongwei and Cai Ming Xi’an Thermal Power Research Institute Co., Ltd. Liu Lianbo Xi'an Thermal Power Research Institute Co. Ltd.

With a particular reference to China Huaneng Group's practices in CO_2 capture, this article presents a brief ing on the current development of CO_2 capture technologies in coal-fired power plants both in China and abroad. Sooner or later, the integration of CO_2 capture and storage (CCS) facility with coal-fired power plant will be inevitably put on the agenda of developers.

关键词： coal-fired power plant emission control carbon dioxide capture

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