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Effects of air pollution control devices on volatile organic compounds reduction in coal-fired power plants
Sun, Shurui; Liu, Wenbin; Guan, Weisheng; Zhu, Shuai; Jia, Jing; Wu, Xiaolin; Lei, Rongrong; Jia, Tianqi; He, Yunchen
2021-08-15
Source PublicationSCIENCE OF THE TOTAL ENVIRONMENT
ISSN0048-9697
Volume782Pages:-
AbstractAir pollution control devices (APCDs) have been fitted to many coal-fired power plants to decrease the impacts of pollutants generated during coal combustion. APCDs remove conventional pollutants but also decrease volatile organic compound (VOC) emissions. In this study, flue gas samples were collected from different points in seven typical coal-fired power and two industrial boilers, and the VOC concentrations in the flue gas samples were determined by gas chromatography-mass spectrometry (GC-MS). Selective catalytic reduction (SCR) systems and electrostatic precipitators (ESP) can synergistically remove VOCs, the mean removal rate of VOCs by ESP was 42% +/- 9%. This was caused by the catalyst in SCR systems and the condensation process in the ESP. Wet flue gas desulfurization (WFGD) affected different VOCs in different ways, increasing the halogenated hydrocarbons and aromatic hydrocarbons concentrations but decreasing the oxygenated VOCs concentrations by 12%. Wet electrostatic precipitators (WESP) increased VOC emissions. By calculating Ozone formation potential (OFP), aromatic hydrocarbons are important contributors to ozone production. The emission factor of the power plant was 0.69 g/GJ, and the Chinese annual emission was about 1.2 x 10(4) t. VOCs emissions in different regions were affected by factors such as the economy and population. VOC emissions can be decreased by using the most appropriate unit load and improving the VOC removal efficiencies of the APCDs. (C) 2021 Elsevier B.V. All rights reserved.
Department环境化学与生态毒理学国家重点实验
KeywordCoal-fired power plant VOCs Air pollution control devices Ozone formation potential Emission factor
WOS Research AreaEnvironmental Sciences
Document Type期刊论文
Identifierhttps://ir.rcees.ac.cn/handle/311016/45713
Collection环境化学与生态毒理学国家重点实验室
Affiliation1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China
2.Changan Univ, Coll Water Resources & Environm, Xian 710054, Peoples R China
3.Natl Res Ctr Geoanal, Beijing 100037, Peoples R China
4.UCAS, Hangzhou Inst Adv Study, Hangzhou 310024, Peoples R China
5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Sun, Shurui,Liu, Wenbin,Guan, Weisheng,et al. Effects of air pollution control devices on volatile organic compounds reduction in coal-fired power plants[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2021,782:-.
APA Sun, Shurui.,Liu, Wenbin.,Guan, Weisheng.,Zhu, Shuai.,Jia, Jing.,...&He, Yunchen.(2021).Effects of air pollution control devices on volatile organic compounds reduction in coal-fired power plants.SCIENCE OF THE TOTAL ENVIRONMENT,782,-.
MLA Sun, Shurui,et al."Effects of air pollution control devices on volatile organic compounds reduction in coal-fired power plants".SCIENCE OF THE TOTAL ENVIRONMENT 782(2021):-.
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