Control strategies of atmospheric mercury emissions from coal-fired power plants in China

	Control strategies of atmospheric mercury emissions from coal-fired power plants in China
	Tian, Hezhong 1; Wang, Yan1,2 ; Cheng, Ke 1; Qu, Yiping 1; Hao, Jiming 3; Xue, Zhigang 4; Chai, Fahe 4
发表期刊	JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION
ISSN	1096-2247
	2012
卷号	62 期号:5 页码:576-586
关键词	Flue-gas Combustion Sources Speciation Elements Se Hg Residues Fate
产权排序	[Tian, Hezhong; Wang, Yan; Cheng, Ke; Qu, Yiping] Beijing Normal Univ, Sch Environm, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100875, Peoples R China; [Wang, Yan] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai, Peoples R China; [Hao, Jiming] Tsinghua Univ, Sch Environm, Beijing 100084, Peoples R China; [Xue, Zhigang; Chai, Fahe] Chinese Res Inst Environm Sci, Beijing, Peoples R China
通讯作者	Tian, HZ (reprint author), Beijing Normal Univ, Sch Environm, State Key Joint Lab Environm Simulat & Pollut Con, 19 Xinjiekouwai St, Beijing 100875, Peoples R China.,hztian@bnu.edu.cn
作者部门	山东省海岸带环境工程技术研究中心
英文摘要	Atmospheric mercury (Hg) emission from coal is one of the primary sources of anthropogenic discharge and pollution. China is one of the few countries in the world whose coal consumption constitutes about 70% of total primary energy, and over half of coals are burned directly for electricity generation. Atmospheric emissions of Hg and its speciation from coal-fired power plants are of great concern owing to their negative impacts on regional human health and ecosystem risks, as well as long-distance transport. In this paper, recent trends of atmospheric Hg emissions and its species split from coal-fired power plants in China during the period of 2000-2007 are evaluated, by integrating each plant's coal consumption and emission factors, which are classified by different subcategories of boilers, particulate matter (PM) and sulfur dioxide (SO2) control devices. Our results show that the total Hg emissions from coal-fired power plants have begun to decrease from the peak value of 139.19 t in 2005 to 134.55 t in 2007, though coal consumption growing steadily from 1213.8 to 1532.4 Mt, which can be mainly attributed to the co-benefit Hg reduction by electrostatic precipitators/fabric filters (ESPs/FFs) and wet flue gas desulfurization (WFGD), especially the sharp growth in installation of WFGD both in the new and existing power plants since 2005. In the coming 12th five-year-plan, more and more plants will be mandated to install De-NOx (nitrogen oxides) systems (mainly selective catalytic reduction [SCR] and selective noncatalytic reduction [SNCR]) for minimizing NOx emission, thus the specific Hg emission rate per ton of coal will decline further owing to the much higher co-benefit removal efficiency by the combination of SCR + ESPs/FFs + WFGD systems. Consequently, SCR + ESPs/FFs + WFGD configuration will be the main path to abate Hg discharge from coal-fired power plants in China in the near future. However, advanced specific Hg removal technologies are necessary for further reduction of elemental Hg discharge in the long term. Implications: Controlling of atmospheric Hg discharge from coal-fired power plants have aroused great concerns for its adverse impacts on regional environment and human health risks, as well as long-distance transportation. It is of great significance for Chinese decision makers to be aware of the current status of Hg emissions from coal-fired power plants, so that the regulations and policies regarding Hg abatement can be made that are cost-effective and feasible implementation. This study provides the recent trend of atmospheric Hg emissions from coal-fired power plants, and accordingly proposes the preliminary comprehensive Hg control strategies suggestion in the future, which will be helpful for relevant policy making to minimize the harmful risks on environment and human health in China.; Atmospheric mercury (Hg) emission from coal is one of the primary sources of anthropogenic discharge and pollution. China is one of the few countries in the world whose coal consumption constitutes about 70% of total primary energy, and over half of coals are burned directly for electricity generation. Atmospheric emissions of Hg and its speciation from coal-fired power plants are of great concern owing to their negative impacts on regional human health and ecosystem risks, as well as long-distance transport. In this paper, recent trends of atmospheric Hg emissions and its species split from coal-fired power plants in China during the period of 2000-2007 are evaluated, by integrating each plant's coal consumption and emission factors, which are classified by different subcategories of boilers, particulate matter (PM) and sulfur dioxide (SO2) control devices. Our results show that the total Hg emissions from coal-fired power plants have begun to decrease from the peak value of 139.19 t in 2005 to 134.55 t in 2007, though coal consumption growing steadily from 1213.8 to 1532.4 Mt, which can be mainly attributed to the co-benefit Hg reduction by electrostatic precipitators/fabric filters (ESPs/FFs) and wet flue gas desulfurization (WFGD), especially the sharp growth in installation of WFGD both in the new and existing power plants since 2005. In the coming 12th five-year-plan, more and more plants will be mandated to install De-NOx (nitrogen oxides) systems (mainly selective catalytic reduction [SCR] and selective noncatalytic reduction [SNCR]) for minimizing NOx emission, thus the specific Hg emission rate per ton of coal will decline further owing to the much higher co-benefit removal efficiency by the combination of SCR + ESPs/FFs + WFGD systems. Consequently, SCR + ESPs/FFs + WFGD configuration will be the main path to abate Hg discharge from coal-fired power plants in China in the near future. However, advanced specific Hg removal technologies are necessary for further reduction of elemental Hg discharge in the long term.
文章类型	Article
资助机构	National Natural Science Foundation of China[20677005, 40975061, 21177012]; Beijing Natural Science Foundation[8113032]; Chinese Academy of Engineering (CAE) on Sustainable Clean Coal Exploitation and Utilization in China
收录类别	SCI
语种	英语
关键词[WOS]	FLUE-GAS ; COMBUSTION SOURCES ; SPECIATION ; ELEMENTS ; SE ; HG ; RESIDUES ; FATE
研究领域[WOS]	Engineering ; Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000303593500009
引用统计	被引频次：38[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.yic.ac.cn/handle/133337/6175
专题	中国科学院烟台海岸带研究所知识产出海岸带生物学与生物资源利用重点实验室_海岸带生物学与生物资源保护实验室
作者单位	1.Beijing Normal Univ, Sch Environm, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100875, Peoples R China 2.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai, Peoples R China 3.Tsinghua Univ, Sch Environm, Beijing 100084, Peoples R China 4.Chinese Res Inst Environm Sci, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Tian, Hezhong,Wang, Yan,Cheng, Ke,et al. Control strategies of atmospheric mercury emissions from coal-fired power plants in China[J]. JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION,2012,62(5):576-586.
APA	Tian, Hezhong.,Wang, Yan.,Cheng, Ke.,Qu, Yiping.,Hao, Jiming.,...&Chai, Fahe.(2012).Control strategies of atmospheric mercury emissions from coal-fired power plants in China.JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION,62(5),576-586.
MLA	Tian, Hezhong,et al."Control strategies of atmospheric mercury emissions from coal-fired power plants in China".JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION 62.5(2012):576-586.