气候变化领域集成服务门户(CCPortal): Forward ultra-low emission for power plants via wet electrostatic precipitators and newly developed demisters: Filterable and condensable particulate matters

CCPortal

DOI	10.1016/j.atmosenv.2020.117372
	Forward ultra-low emission for power plants via wet electrostatic precipitators and newly developed demisters: Filterable and condensable particulate matters
	Liang Y.; Li Q.; Ding X.; Wu D.; Wang F.; Otsuki T.; Cheng Y.; Shen T.; Li S.; Chen J.
发表日期	2020
ISSN	1352-2310
卷号	225
英文摘要	Coal-fired power plants (CFPPs) install wet electrostatic precipitators (WESPs) or/and demisters as end control devices along with wet flue gas desulfurization (WFGD) systems to meet the ultra-low emission standards in China. This study comprehensively explores the influence of these end control devices on filterable particulate matter (FPM) and condensable particulate matter (CPM) emissions, based on field measurements and chemical analyses of collected samples. The field study was conducted in two typical CFPPs, one equipped with WESPs and the other with newly developed demisters (NDDs). With respect to FPM and filterable PM2.5, the WESP removal efficiency was 96 ± 3% and 92 ± 2%, respectively, and that of NDD was 62 ± 6% and 51 ± 5%, respectively. However, for some unconventional pollutants, the NDD removal efficiency was 60 ± 8% for CPM, which was higher than that of WESP (42 ± 10%); the removal efficiencies of HCl, SO3, and NH3 during the WESP were 78 ± 8%, 44 ± 11%, and 30 ± 5%, respectively, while they were 69 ± 16%, 58 ± 9%, and 60 ± 7%, respectively, when equipped with the NDD. Chemical composition analysis of the obtained samples revealed that the relative content of SO42− in FPM2.5 increased from 12–17% to 14–33% on using end control devices (WESP or NDD). Moreover, SO42− was the major ion component in CPM with relative ratios increasing from 15–35% to 21–59%. The mass ratio of FPM2.5 in FPMs, as well as the relative mass ratio of CPMs, in total particulate matter increased at the outlets of both control devices. The obtained results imply that both WESP and NDD effectively remove FPM and CPM to meet the ultra-low emission standards, respectively. Thus, more attention should be paid to emissions of CPM and FPM2.5 in pollution control technologies. © 2020 Elsevier Ltd
关键词	Coal-fired power plant Flue gas desulfurization Particulate matter Pollutant emission and control Wet electrostatic precipitator
语种	英语
scopus关键词	Ammonia; Chemical analysis; Chlorine compounds; Coal; Coal fueled furnaces; Desulfurization; Efficiency; Electrostatic precipitators; Electrostatics; Flue gases; Fossil fuel power plants; Gas plants; Mist eliminators; Particles (particulate matter); Pollution control; Coal-fired power plant; Flue gas desulfurization; Particulate Matter; Pollutant emission; Wet electrostatic precipitators; Particulate emissions; chemical composition; coal-fired power plant; condensation; electrochemistry; emission control; filter; particulate matter; pollutant removal; article; attention; chemical analysis; desulfurization; electric power plant; electrostatic precipitation; field study; flue gas; particulate matter; pollution control; China
来源期刊	ATMOSPHERIC ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/249269
作者单位	Department of Environmental Science and Engineering, Fudan University, Shanghai, 200433, China; Shanghai Institute of Eco-Chongming (SIEC), No. 3663 Northern Zhongshan Road, Shanghai, 200062, China; China Huaneng Clean Energy Technology Research Institute Co, Ltd, Beijing, 102209, China; Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China
推荐引用方式 GB/T 7714	Liang Y.,Li Q.,Ding X.,et al. Forward ultra-low emission for power plants via wet electrostatic precipitators and newly developed demisters: Filterable and condensable particulate matters[J],2020,225.
APA	Liang Y..,Li Q..,Ding X..,Wu D..,Wang F..,...&Chen J..(2020).Forward ultra-low emission for power plants via wet electrostatic precipitators and newly developed demisters: Filterable and condensable particulate matters.ATMOSPHERIC ENVIRONMENT,225.
MLA	Liang Y.,et al."Forward ultra-low emission for power plants via wet electrostatic precipitators and newly developed demisters: Filterable and condensable particulate matters".ATMOSPHERIC ENVIRONMENT 225(2020).