吸附联合低温等离子体法去除甲苯废气  

Toluene removal using adsorption combined with non-thermal plasma

作　　者：党小庆[1] 刘晓[1] 黄家玉[1] 吴涛[1] 康露[1] 

机构地区：[1]西安建筑科技大学环境与市政工程学院,西安710055

出　　处：《环境工程学报》2012年第9期3223-3228,共6页Chinese Journal of Environmental Engineering

基　　金：陕西省教育厅2009年度科学研究计划基金项目(09JK513)

摘　　要：对介质阻挡放电条件下产生的低温等离子体联合吸附去除低浓度甲苯废气进行了实验研究。考察了反应器内分别填充分子筛、陶瓷环和混合填料时,甲苯的吸附效果;比较了各种填充条件下,低温等离子体对甲苯的去除效果和副产物臭氧的产生量;并对填充混合填料时不同外加电压、不同操作条件下,吸附联合低温等离子体去除甲苯的过程进行系统的研究。结果表明,外加电压相同,混合填料对甲苯的去除率最高,大于97%,依次是分子筛、陶瓷环、无填充;同时混合填料的臭氧浓度小于其他填料;当电压为18 kV时,混合填料可获得较高的甲苯去除率,同时产生的臭氧副产物最少。The synergetic effect of gaseous toluene decomposition using dielectric barrier discharge plasma and adsorption was studied. A systematic investigation on toluene removal efficiency and ozone byproduct generatiTon was conducted using different types of fillers. The results indicated that in terms of toluene removal efficiency, composite packing material of zeolite and ceramic rings exhibited the highest removal efficiency, higher than 97% , next was molecular sieve, then followed by ceramic rings and no filler-packed. Among the tested fillers, mixed fillers showed the least amount of ozone generation. For the practical use of the mixed fillers, it＇ s preferable to operate at 18 kV, avoiding forming more undesirable 03 byproducts on achieving the same toluene removal effect.

关 键 词：分子筛 低温等离子体 吸附 甲苯 

分 类 号：X701.7[环境科学与工程—环境工程]