Study on Mercury Emission Characteristics during Coal Slime Isothermal Heating Experiments

doi:10.11930/j.issn.10.11930.2015.4.57

Abstract

Abstract: In order to utilize coal slimes substantially and comprehensively, studies on mercury releasing characteristics in coal slime combustion should be conducted. In this paper, the isothermal heating experiments on two kinds of selected coal slimes are carried out to investigate the impact of heating time and temperature on mercury releasing characteristics in the normal air. The experiment results indicate that the mercury in coal slimes begins to release at about 200 ℃ and is released substantially between 200 ℃ and 400 ℃. When the temperature gets higher than 400 ℃, it is released almost completely. The higher the temperature, the faster mercury is released and the shorter time period is needed to achieve the maximum mercury emissions. In addition, the isothermal experiment shows some differences between the mercury release courses of the two slimes, which means that different raw coal sorting process may result in different mercury distribution in slimes.

Key words: coal slime, mercury, isothermal decomposition, release characteristic

CLC Number:

X705
TK01+9

GAO Zhengyang, FAN Yuanzhou, CHEN Songtao, YIN Libao, CHEN Chuanmin. Study on Mercury Emission Characteristics during Coal Slime Isothermal Heating Experiments[J]. Electric Power, 2015, 48(4): 57-60.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.10.11930.2015.4.57

https://www.electricpower.com.cn/EN/Y2015/V48/I4/57

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