Catalytic oxidation characteristics of modified carbon nanotubes on elemental mercury in oxy-coal combustion environment

LI Geng; ZHONG Bin; PENG Sanlong

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Catalytic oxidation characteristics of modified carbon nanotubes on elemental mercury in oxy-coal combustion environment

更新时间：2025-09-28

- Catalytic oxidation characteristics of modified carbon nanotubes on elemental mercury in oxy-coal combustion environment
- Thermal Power Generation Vol. 45, Issue 1, Pages: 20-24(2016)
- 作者机构：
  
  深圳东方锅炉控制有限公司
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK16
- Published：2016
- 稿件说明：
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LI Geng, ZHONG Bin, PENG Sanlong. Catalytic oxidation characteristics of modified carbon nanotubes on elemental mercury in oxy-coal combustion environment[J]. Thermal power generation, 2016, 45(1): 20-24.
DOI：

LI Geng, ZHONG Bin, PENG Sanlong. Catalytic oxidation characteristics of modified carbon nanotubes on elemental mercury in oxy-coal combustion environment[J]. Thermal power generation, 2016, 45(1): 20-24. DOI：

摘要

研究了一种钼改性载锰碳纳米管(Mn-Mo/CNT)低温汞氧化催化剂在富氧燃烧烟气中对单质汞的催化氧化效果。结果表明:由于CO_2会使催化剂表面的活性锰成分碳酸盐化

因此CO_2体积分数过高会强烈抑制该催化剂对汞的氧化;富氧烟气中SO_2体积分数过高则会促进催化剂对单质汞的氧化

但是SO_2的存在并没有完全消除CO_2的影响;H_2O体积分数较高不会对催化剂氧化汞的效果造成明显影响;由于催化剂对HCl比对CO_2的吸附能力更强

因此富氧燃烧烟气中仅存的少量HCl可完全消除CO_2对催化剂氧化汞造成的不利影响。

Abstract

The mercury oxidation ability of a molybdenum modified carbon nanotube carrying manganese(Mn-Mo/CNT)was studied in O_2/CO_2 combustion flue gas.The results suggest that high CO_2 content strongly inhibited the mercury oxidized by this catalyst because CO_2 could react with manganese dioxide on the catalyst surface.High SO_2 concentration could promote the mercury oxidization

but the presence of SO_2 could not eliminate the adverse effect of CO_2.High H_2O concentration did not show any effect on the mercury oxidized by this catalyst in the existence of high CO_2 content.However

for the catalyst has stronger adsorption ability on HCl than CO_2

low content HCl could completely eliminate the unfavorable effect of CO_2 on mercury oxidized by this catalyst.

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