Effect of gas composition on NO<sub>x</sub> removal in dielectric barrier discharge reactor

WANG Tao; SUN Baomin; XIAO Haiping; DU Xu; ZENG Juying; DUAN Erpeng; RAO Su

doi:10.3969/j.issn.0438-1157.2012.11.040

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Effect of gas composition on NO_x removal in dielectric barrier discharge reactor

更新时间：2025-12-10

- Effect of gas composition on NO_x removal in dielectric barrier discharge reactor
- CIESC Journal Issue 11, Pages: 3652-3659(2012)
- 作者机构：
  
  1. 华北电力大学电站设备状态监测与控制教育部重点实验室,北京,102206
  2. 中工国际工程股份有限公司,北京,100080
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0438-1157.2012.11.040
  CLC： Q534.9
- Online First：05 November 2012，
  
  Published：05 November 2012
- 稿件说明：
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WANG Tao, SUN Baomin, XIAO Haiping, et al. Effect of gas composition on NO_x removal in dielectric barrier discharge reactor[J]. CIESC Journal, 2012, (11): 3652-3659. DOI: 10.3969/j.issn.0438-1157.2012.11.040.
DOI：

WANG Tao, SUN Baomin, XIAO Haiping, et al. Effect of gas composition on NO_x removal in dielectric barrier discharge reactor[J]. CIESC Journal, 2012, (11): 3652-3659. DOI: 10.3969/j.issn.0438-1157.2012.11.040. DOI：

摘要

利用介质阻挡放电(DBD)产生低温等离子体进行烟气的脱硝实验

研究了在乙烯存在的条件下

温度和其他烟气成分对NOx脱除率的影响。结果表明:随着温度的升高

NO脱除速率增快;模拟烟气中加入CO2

在能量密度较低时

CO2作为电负性分子会降低自由基的生成

导致NO的脱除率降低

随着能量密度的升高

CO2对NO脱除的影响减小;模拟烟气中加入水后可以产生更多的OH、HO2等自由基

促进NO的氧化;SO2的加入会与自由基O反应

使初始反应中O与C2H4的反应速率减弱

从而影响了NO的氧化速率

但O3、HO2等强氧化自由基会优先与NO反应

因此SO2的加入不会影响NO最终的脱除率。

Abstract

The experiment for removal of NOx in flue gas by non-thermal plasma generated in dielectric barrier discharge(DBD)was conducted to study the influence of temperature and gas composition of gas containing-ethylene on the removal.The results show that rate of NO removal is accelerated by increase of temperature.Under lower energy density

addition of electronegative molecule CO2 into simulation gas leads to efficiency reduction of NO removal because of decrease of radical generated

but the effect will be weakened with increasing energy density.The water addition in simulation gas can result in formation of more free radicals such as OH and HO2 which can promote oxidation of NO.However

if SO2 is also added which can react with O radical

on one hand

the reaction rate of O and C2H4 in the initial stage can be reduced

which makes NO oxidation decrease.On the other hand

free radicals O3 and HO2 with strong oxidation ability can react with NO prior to SO2.So

addition of SO2 has no influence on NO removal.

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Effect of gas composition on NOx removal in dielectric barrier discharge reactor

DOI：10.3969/j.issn.0438-1157.2012.11.040

摘要

Abstract

关键词

Keywords

references

Effect of gas composition on NO_x removal in dielectric barrier discharge reactor