NO-N_2系统不同电子平均能量下非平衡等离子体脱除NO的数值模拟  

Numerical Simulation Study on the Removal of NO in NO-N_2 Mixtures by Non-equilibrium Plasma with Different Average Energy

作　　者：曹春梅[1] 甄钊[2] 

机构地区：[1]华北电力大学环境科学与工程学院,河北保定071003 [2]华北电力大学电气与电子工程学院,河北保定071003

出　　处：《华东电力》2011年第7期1167-1170,共4页East China Electric Power

基　　金：国家重点基础研究发展计划项目(2006CB200300-G)~~

摘　　要：对不同电子平均能量下非平衡等离子体中高于N2解离能的高能电子百分比进行了计算。采用非平衡等离子体脱除NO-N2系统中NO的简化模型,对不同电子平均能量下反应中主要粒子的变化规律及NO脱除效率进行了分析和计算。结果表明,非平衡等离子体中电子平均能量越高,电子能量大于N2解离能的高能电子所占百分比越大,体系NO脱除效率越高;中间产物N和O数密度随时间呈现快速增长达到峰值又快速衰减为零的变化趋势;NO2产率随电子平均能量的增大而减小,O2产率随电子平均能量的增大而增大。The percentage of high energy electron which is higher than the N2 molecular′s dissociation energy in plasma fields is calculated and presented in this paper.The behavior of main particle species and the removal of NO under different electron average energy are analyzed and calculated by using the simple model of removing NO in NO-N2 mixtures under non-equilibrium plasma discharge.The results show that the percentage increase with the increase of electron average energy,and the removal efficiency of NO increase with the increase of the electron average energy as well.As intermediate products,N and O have high number densities under higher average energy,N and O number densities rise fast first and then decay fast to zero.NO2 production decreases while O2 production increases with the increase of the average energy.

关 键 词：非平衡等离子体 电子平均能量 NO脱除 数值模拟 

分 类 号：TK411.5[动力工程及工程热物理—动力机械及工程]