脉冲电晕法处理含苯废气实验研究  

Experimental analysis of PCPP-removal of exhaust gas involving Benzene

作　　者：翁棣[1] 张艳[1] 楼婷婷[1] 吕碧洪[1] 徐涛[1] 张文聪[1] 

机构地区：[1]浙江大学环境与资源学院,浙江杭州310029

出　　处：《实验技术与管理》2011年第5期32-36,共5页Experimental Technology and Management

基　　金：浙江省教育厅科研计划项目(Y200805807);浙江大学实验教学研究项目

摘　　要：挥发性有机物(VOCs)的污染与控制技术日益受到重视。近年来发展起来的非平衡等离子体技术在治理VOCs方面已初步显示其独特的技术优势,现已成为废气治理研究领域中的前沿热点课题之一。等离子体法降解VOCs的机理较为复杂,研究不同线路对VOCs降解过程的影响意义重大。采用脉冲电晕放电等离子体技术,建立了混合电晕、有机电晕、空气电晕和分别电晕4种不同的实验方案,选取苯为代表物质进行实验研究,在初始浓度、停留时间和电源参数等一定的条件下,考察脉冲电压对苯去除率的影响。结果表明,电压为140kV、混合电晕时苯的去除率达到82.73%,脉冲电晕技术处理低浓度有机废气效果较好。More attentions are gradually paid to the pollution and treatment of VOCs.The current technologies for controlling VOCs have associated with some problems.Pulse corona induced plasma discharge process（PCPP） is regarded as a promising technology to control the pollutants.The mechanism with which plasma degrades VOCs is complicated,therefore studies on different connections as well as their influences on decomposing process are significant.PPCP is employed to degrade VOCs such as benzene.Four different connections are built,which are ＂mix together before corona discharge,corona discharge benzene sample only,corona discharge air only,both benzene sample and air are corona discharged before mix together.＂ On the basis of unchanged inlet concentration,resident time and parameter of electrical source,the removal efficiency of benzene is investigated at different voltages.Reaction mechanisms are discussed based on the removal efficiency at different connections.For optimal experimental conditions（applied voltage of 140kV,connection of ＂mix together before corona discharge＂）,the removal efficiency is equal to 82.73%.

关 键 词：废气处理 脉冲电晕 等离子体 去除率 

分 类 号：X701[环境科学与工程—环境工程]