Application of WESP in Coal-Fired Power Plants and Its Effect on Emission Reduction of PM2.5

doi:10.11930/j.issn.1004-9649.2013.11.62.3

Abstract

Abstract: The wet electro static precipitator(WESP) has been used successfully in developed countries. In order to borrow the excellent experience abroad and promote the emission-reduction of PM_2.5 from the power sector in China, the paper analyzes the principle of WESP, and compares the applications between China and abroad with the technical economics of WESP analyzed. In addition, the contribution of WESP to the reduction of PM_2.5 from the power sector is also demonstrated in details. The foreign operation experience indicates that not only has the number of PM_2.5 particles been decreased effectively, but also the dust emission concentration is controlled below 10 mg/m³ as well as over 95% of the acid fog removal rate and remarkable achievement on Hg control. WESP has been put into operation successfully or is being constructed in some power plants in China. The monitor data show that the removal rate of PM_2.5, SO₃ and Hg is about 85%, 70% and 60% respectively. If WESP is installed in the 200-GW coal-fired generating units in the key pollutant control regions of Beijing—Tianjin—Hebei area, Yangtze River Delta and Pearl River Delta, 638 thousand tons of PM_2.5 can be reduced annually.

Key words: coal-fired power plant, WESP, PM2.5, emission-reduction

CLC Number:

TM621.7⁺3

MO Hua, ZHU Fa-hua, WANG Sheng, YI Yu-ping. Application of WESP in Coal-Fired Power Plants and Its Effect on Emission Reduction of PM_2.5[J]. Electric Power, 2013, 46(11): 62-65.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.2013.11.62.3

https://www.electricpower.com.cn/EN/Y2013/V46/I11/62

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Application of WESP in Coal-Fired Power Plants and Its Effect on Emission Reduction of PM_2.5

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