中文摘要：

采用非平衡等离子体脱除NO—N2系统中NO的简化模型，对不同电离度下反应中主要粒子的变化规律及NO脱除效率进行分析和计算。结果表明，电子数密度随时间按指数规律快速衰减；初始电子相对数密度是决定体系非平衡等离子体NO脱除的本质因素，初始电子相对数密度大，体系NO脱除效率高；较高的电离度适合产生高密度的中间产物N和O，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0的变化趋势；反应的最终产物为N，，但也有一定量的O2和少量的NO2。O2产率随电离度的增大而增大，O2最大产率与NO初始数密度同一量级；NO2产率随电离度变化规律较复杂，电离度过高或偏低，O2产率都较低，最大O2产率比NO初始数密度至少低一个数量级。

英文摘要：

The behavior of main particle species and the removal of NO with different ionization degrees were 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 electron number density presents the exponential decay rule along with the time change; the initial electron relative number density is the critical factor to the removal of NO in non-equilibrium plasma, the removal efficiency of NO increases with the initial electron relative number density increases; As intermediate products, N and O have high number densities under higher ionization degrees, N and O number densities rise fast first and then decay fast to zero. The final reaction products are N：, as well as some O2 and a little NO2. O2 production increases with the ionization degree increases, the maximum of O2 is the same order of magnitude with the initial NO number density; the temporal changes of NO2 production with different ionization degrees are complex, NO2 production is quite low if the ionization degree is very high or very low, the maximum of NO2 is lower at least one order of magnitude than the initial NO number density.