化工学报Issue(3)：1056-1061,6.DOI:10.3969/j.issn.0438-1157.2014.03.040
NTP转化C3H6/NO/N2气氛中NO及发射光谱分析
NO conversion in C3H6/NO/N2 mixture by non-thermal plasma and emission spectrography analysis
摘要
Abstract
The low temperature plasma i.e. non-thermal plasma (NTP) produced by dielectric barrier discharge was employed to decompose NOx in C3H6/NO/N2 mixture. How to make this process higher conversion efficiency with lower energy cost is a topic of the present study. In order to study the effect of hydrocarbon on NO conversion in diesel exhaust, in experimental study C3H6/NO/N2 mixture was treated by NTP and an optical emission spectroscopy diagnosis technology adopted to obtain the information about radicals and excimer in the discharge space produced by NTP. The results indicate that with increase of discharge power, NO conversion efficiency increases sharply first and then slows down to a constant value, and NO2 concentration gradually decreases while N2O concentration grows up first and then goes down. NO in the mixture is mainly reduced to N2. At the same discharge power, with increase of C3H6 initial concentration NOx conversion efficiency and N2O concentration increases while NO2 concentration decreases. The addition of C3H6 can make the spectral intensity of NO-γband and N2 second positive band decreases, while do CN radical to stimulate the transition spectral line, which can affect NO conversion mechanism, and so the formation of yellow polymer.关键词
低温等离子体/发射光谱/碳氢化合物/NO转化/自由基/化学反应Key words
non-thermal plasma/emission spectroscopy/hydrocarbon/NO conversion/radical/chemical reaction分类
能源科技引用本文复制引用
李小华,韦星,蔡忆昔,施蕴曦,江飞,董淼..NTP转化C3H6/NO/N2气氛中NO及发射光谱分析[J].化工学报,2014,(3):1056-1061,6.基金项目
国家自然科学基金项目（51176067）；教育部博士点基金（20103227110014）；江苏省自然科学基金项目（BK2010330）；江苏省高校优势学科建设工程项目。@@@@supported by the National Natural Science Foundation of China (51176067), the Ph.D. Programs Foundation of Ministry of Education of China (20103227110014), the Natural Science Foundation of Jiangsu Province (BK2010330) and the Priority Academic Program Development of Jiangsu Higher Education Institution （51176067）
