Research and Practice of Flue Gas Mercury Reduction Technology in Coal-Fired Power Plants

doi:10.11930/j.issn.1004-9649.2016.08.135.05

Abstract

Abstract: In order to master the technology of flue gas mercury emission control in coal-fired power plants, the Sanhe Power Plant conducts the study on flue gas mercury emission reduction. In the study, four kinds of technologies are used on flue gas mercury removal. They are adding calcium bromide(CaBr2) to the as-fired coal, injecting activated carbon before the flue gas enters the electrostatic precipitators(ESP), adopting the co-mercury removal technology with CaBr2 and ordinary activated carbon, and modifying the fly ash before it enters the ESP. The study results show that all the four technologies have good mercury removal efficiency, among which the efficiency of adding CaBr2 to feed coal reaches as much as 77.5% with the lowest operating costs; while that of co-mercury removal technology with CaBr2 and ordinary activated carbon can even reach 92.6% but with the highest operating costs.

Key words: coal-fired power plant, flue gas mercury removal, calcium bromide, activated carbon, fly ash

CLC Number:

TM621
X51

SHI Xiaohong, ZHANG Yi, ZHAO Rui, CHEN Chuangshe. Research and Practice of Flue Gas Mercury Reduction Technology in Coal-Fired Power Plants[J]. Electric Power, 2016, 49(8): 135-139.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.2016.08.135.05

https://www.electricpower.com.cn/EN/Y2016/V49/I8/135

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