同轴式DBD分解NO/N_2混合气的光谱研究  

A Study on DBD Decomposing NO/N_2 Mixture Gas by Optical Emission Spectrum

作　　者：刘志楠[1] 蔡忆昔[1] 王军[1] 孙传红[1] 韩文赫[1] 

机构地区：[1]江苏大学汽车与交通工程学院,江苏镇江212013

出　　处：《工程热物理学报》2011年第10期1793-1796,共4页Journal of Engineering Thermophysics

基　　金：国家自然科学基金资助项目(No.50776041)

摘　　要：本文建立了大气压介质阻挡放电发射光谱测量系统,测得NO/N_2体系的等离子体发射光谱。利用Q-V Lissajous图形法对反应器电学参量进行测试,研究激励电压峰峰值V_(P-P)对NO、N_2各激发态物种光谱强度的影响。实验结果表明:低温等离子体产生的高能电子可有效作用于NO、N-2分子,产生NO(A^2∑^+→X^2Π)、N_2(C^3Π_u→B^3Π_g)等多种激发态物质;NO(A^2∑^+-X^2Π)谱线强度随V_(P-P)的增大先增大后减小,N_2(C^3Π_u→B^3Π_g)谱线强度随V_(P-P)的增大而增大;NO主要通过还原反应得以去除,去除率可达98%。This paper has set up a test system of coaxial dielectric barrier discharge optical emission spectrum at atmosphere pressure,measured plasma optical emission spectrum of NO/N_2 mixed gas system.Used Q-V Lissajous figure method to measure the electrical parameters of the reactor,and studied the effect of applied voltage peak-peak value（V_（P-P）） on the optical emission intensity of NO, N_2 excited state species.The results showed that high-energy electrons produced by non-thermal plasma could be an effective role in the NO,N_2 molecules,which could produce a variety of excited states matters,such as NO（A^2Σ~＋-X^2Π）,N_2（C^3Π_u→B^3Π_g）;NO（A^2Σ~＋-X^2Π） optical emission spectrum strength firstly increased then decreased with the increase of V_（P-P）,N_2（C^3Π_u→B^3Π_g） optical emission spectrum strength increased with the increase of V_（P-P）;NO was removed mainly through the reduction reaction,its removal rate could reach to 98%.

关 键 词：介质阻挡放电 低温等离子体 NO N_2 发射光谱 

分 类 号：TK121[动力工程及工程热物理—工程热物理] X511[动力工程及工程热物理—热能工程]