低温等离子体转化NO的反应动力学研究

Research on Reaction Kinetics of NO Conversion by Non-Thermal Plasma

针对含有和不含有O2的两种模拟柴油机尾气(NO+N2和NO+N2+O2)在介质阻挡放电反应器中脱除NO的机理进行了分析,建立了利用低温等离子体去除和转化NO的反应动力学模型,并对处理NO的化学过程进行了反应动力学模拟,将模拟结果与自行设计的介质阻挡放电低温等离子体试验装置的试验数据[1]进行对比,验证了该动力学模型的合理性和正确性,并利用该机理模型,对反应体系中其余主要反应物种的浓度进行了模拟研究,得到了这些物种的浓度随停留时间的变化曲线。

The conversion mechanism of NO in two kinds of simulated diesel engine exhaust gas with O2 and without O2（NO＋N2 and NO＋N2＋O2）in the dielectric barrier discharge reactor was analyzed respectively.The reaction kinetics model of NO conversion by non-thermal plasma was established and used for the reaction kinetics simulation of the chemical process of NO conversion.The reaction kinetics model is proved to be reasonable and correct by comparison of calculated and experimental data from self-designed dielectric barrier discharge non-thermal plasma reactor.The model was used for simulation research of other main species concentration in the reaction system and the transferring curves of these species concentration were obtained.