Effect of chlorine and fluorine elements on mercury species and its distribution in flue gas

YIN Libao; YU Liangying; XU Qisheng; XIONG Yangheng

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Effect of chlorine and fluorine elements on mercury species and its distribution in flue gas

更新时间：2025-09-28

- Effect of chlorine and fluorine elements on mercury species and its distribution in flue gas
- Thermal Power Generation Vol. 43, Issue 10, Pages: 16-19(2014)
- 作者机构：
  
  1. 广东电网公司电力科学研究院
  2. 武汉大学动力与机械学院
- 作者简介：
- 基金信息：
- DOI：
  CLC： X773
- Published：2014
- 稿件说明：
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YIN Libao, YU Liangying, XU Qisheng, et al. Effect of chlorine and fluorine elements on mercury species and its distribution in flue gas[J]. Thermal power generation, 2014, 43(10): 16-19.
DOI：

YIN Libao, YU Liangying, XU Qisheng, et al. Effect of chlorine and fluorine elements on mercury species and its distribution in flue gas[J]. Thermal power generation, 2014, 43(10): 16-19. DOI：

摘要

在100kPa、50~950℃的条件下

采用化学热力平衡分析方法研究了煤燃烧过程中F离子和Cl离子对痕量元素汞的形态及其分布的影响。结果表明:在煤燃烧的较高温度区域

单质汞是汞的主要形式;随着烟气温度的降低

单质汞将发生化学反应生成二价汞的化合物

形式主要为HgCl2(g);氯离子含量的增加可以增强汞的蒸发

有利于排放控制

而氟元素对汞在烟气中的行为特性几乎无影响。

Abstract

The effect of F-and Cl-formed during coal combustion on mercury species and its distribution at100 kPa and 50℃to 950℃ was investigated by using the chemical thermodynamic equilibrium method.The results indicate that elemental mercury is the main form in the maximum temperature zone of coal combustion.With the reduction of temperature

the elemental mercury will convert into bivalent mercury compound

which is mainly HgCl2(g)

through chemical reaction.In addition

the increase of chlorine element can lead to acceleration in mercury evaporation.However

the fluorine element nearly has no influence on mercury's behavior in the flue gas.

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