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建立了低温等离子体技术处理N_2/NO气氛中NO的实验系统,利用介质阻挡放电发射光谱诊断法分析了NTP技术处理NO的反应机理,以及研究了NTP系统的运行参数和N_2体积流量对NO转化率的影响规律。研究结果表明,随着V(_P-P)的增加,N_2发射光谱强度相对于NO发射光谱强度的比值增加,N_2第二正带系发射光谱强度增加,表明放电区间的高能电子浓度增大,有利于N_2离解成N原子,从而促使NO还原转化;增加N_2体积流量会使NO转化率降低,NO_2浓度升高。
The experimental system of NO treatment in N 2 / NO atmosphere by low temperature plasma was established. The reaction mechanism of NO treatment by NTP was analyzed by dielectric barrier discharge spectroscopy. The effects of NTP system operating parameters and N 2 volume flow on NO conversion Rate of influence of law. The results show that with the increase of V (_P-P), the ratio of the intensity of N 2 emission spectrum to that of NO emission spectrum increases, and the intensity of the emission spectrum of the second positive band of N 2 increases, which indicates that the concentration of high energy electron in the discharge zone increases, Which is conducive to the dissociation of N 2 into N atoms, thus promoting the reduction and transformation of NO. Increasing the N 2 volume flow will decrease the NO conversion and increase the NO 2 concentration.