双极性高压脉冲DBD降解气态苯的实验研究  

Decomposition of Gaseous Benzene by Bipolar Pulsed High-voltage DBD

作　　者：王文瑞[1,2] 李锻[1] 鲁娜[1,3] 吴彦[1,3] 

机构地区：[1]大连理工大学静电与特种电源研究所,辽宁大连116024 [2]大连理工大学环境学院,辽宁大连116024 [3]大连理工大学工业生态与环境工程教育部重点实验室,辽宁大连116024

出　　处：《广东工业大学学报》2011年第3期51-53,共3页Journal of Guangdong University of Technology

基　　金：国家自然科学基金资助项目(50678031);国家"863"计划资助项目(2009AA064101-4)

摘　　要：为了研究挥发性有机化合物的降解特性,将气态苯引入线-筒式介质阻挡放电反应器,利用双极性脉冲高压进行降解.考察了放电间隙、放电长度和Mn/γ-Al2O3催化剂对苯降解的影响.结果表明:在相同电压下,小放电间隙注入的能量较大,有利于苯的降解,放电间隙对苯的降解效果影响由大到小依次为3.5 mm、6 mm、8.5 mm;苯的降解率随着放电长度的增加而增大;加入Mn/γ-Al2O3,进一步提高了苯的降解率,Mn质量分数增大到15%时,苯的降解率和碳氧化物选择性都有所提高,分别为91.8%和94.6%.To investigate the decomposition characteristics of volatile organic compounds （VOCs）, gaseous benzene was introduced into the wire-cylinder dielectric barrier discharge （DBD） reactor and degraded by bipolar pulsed high-voltage. The effects of discharge gap, discharge length and Catalyst Mn/γ-Al2O3 on the degradation of benzene were studied. The results indicate that： under the same larger injecting energy, which is favorable for the degradati voltage, the reactor with a small discharge gap has the on of benzene; the order of the positive effect of discharge gap on the removal of benzene is 3.5 mm 〉 6 mm 〉 8 mm ; the decomposition efficiency of benzene increases as the discharge length increases ; more benzene is further removed due to the addition of Mn/γ-Al2O3 ; the degradation efficiency of benzene and the carbon oxides selectivity are both improved with the amount of Mn increasing to 15% ,91.8% and 94. 6% respectively.

关 键 词：双极性脉冲高压 DBD放电 苯 催化 

分 类 号：X511[环境科学与工程—环境工程]