中国电力 ›› 2013, Vol. 46 ›› Issue (6): 99-102.DOI: 10.11930/j.issn.1004-9649.2013.6.99.3

• 节能与环保 • 上一篇    下一篇

非平衡等离子体特征量对NO脱除效率的影响

曹春梅, 丁庆伟   

  1. 华北电力大学 数理系,河北 保定 071003
  • 收稿日期:2013-02-26 出版日期:2013-06-05 发布日期:2015-12-15
  • 作者简介:曹春梅(1965—),女,河北秦皇岛人,教授,从事大气污染控制理论方面的教学与研究。E-mail: caochunmeihd@126.com
  • 基金资助:
    国家重点基础研究发展计划(973计划)资助项目(2006CB200300-G)

Effect of Non-Equilibrium Plasma Characteristics on NO Removal Efficiency

CAO Chun-mei, DING Qing-wei   

  1. School of Mathematics and Physics, North China Electric Power University, Baoding 071003, China
  • Received:2013-02-26 Online:2013-06-05 Published:2015-12-15

摘要: 采用数值模拟的方法开展了非平衡等离子体脱除烟气中NO的研究,考察了非平衡等离子体放电中的2个主要特征量(电子数密度ne和电子平均能量 )对NO脱除效率的影响。计算结果表明,NO脱除效率随电子数密度ne和电子平均能量 的变化而有不同程度的变化,相比较而言,电子数密度量级变化对NO脱除效率的影响更大。在NO初始分子浓度(粒子数密度)为1016 cm-3情况下,电子数密度较高(1017 cm-3)时,即使电子平均能量 低至4 eV,也可获得高达99%的NO脱除效率。当电子数密度和电子平均能量保持不变时,NO脱除效率随着NO初始分子浓度的增加而降低。

关键词: 非平衡等离子体, 电子数密度, 电子平均能量, 数值模拟, NO脱除效率

Abstract: The numerical simulation method is adopted to study NO removal from the flue gas by non-equilibrium plasma. The influence of two major characteristics in non-equilibrium plasma (electron number density ne and electron average energy ) on NO removal efficiency is investigated. The simulation results show that the NO removal efficiency varies with the electron number density ne and the electron average energy . In comparison, the electron number density plays a much more important role in NO removal efficiency. When the initial concentration of NO is 1016 cm-3 and the electron density is high(ne≥1017 cm-3 ), the NO removal efficiency can get up to 99% even though the electron average energy is as low as 4 eV. Given constant density of the electron number and the average electron energy, the NO removal efficiency worsens as the initial concentration of NO rises.

Key words: non-equilibrium plasma, electron number density, electron average energy, numerical simulation, NO removal efficiency

中图分类号: