Chemical-mechanical bromination of biomass ash for mercury removal from flue gases

被引：40

作者：

Bisson, Teresa M. ^{[1
]}

Xu, Zhenghe ^{[1
]}

Gupta, Rajender ^{[1
]}

Maham, Yadollah ^{[1
]}

Liu, Yan ^{[1
]}

Yang, Hongqun ^{[1
]}

Clark, Ian ^{[2
]}

Patel, Manoj ^{[2
]}

机构：

[1] Univ Alberta, Dept Chem & Mat Engn, Edmonton, AB T6G 2V4, Canada

[2] Capital Power Corp, Edmonton, AB T5J 2Z1, Canada

来源：

FUEL | 2013年 / 108卷

基金：

加拿大自然科学与工程研究理事会;

关键词：

Mercury emission control; Biomass ash; Chemical-mechanical bromination; Activated carbon; Coal-fired power plant;

D O I：

10.1016/j.fuel.2012.02.035

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

080707 [能源环境工程]; 082001 [油气井工程];

摘要：

Current approaches for mercury removal have been focusing on injection of powdered activated carbon sorbents into the flue gas stream. In particular, brominated activated carbon has been proven at pilot scale and plant trials to be effective at removing mercury from flue gases of coal-fired power plants. However, activated carbon is a costly source material. Using an industrial solid waste from biomass combustion as an alternative source material to produce sorbents for mercury emission control is an attractive option. This paper describes a novel chemical-mechanical bromination process for production of mercury sorbent from a biomass combustion ash, which is normally considered a solid waste. The chemical-mechanical brominated ash was characterized and tested for mercury capture and release at high temperatures. The brominated biomass ash was found to effectively capture mercury up to 390 degrees C in lab scale tests. The tests of the new brominated sorbent in a 375 MW coal fired power plant showed promising performance. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：54 / 59

页数：6

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