低温等离子体处理柴油机有害排放的比较研究  

Non-thermal Plasma Reactors with Different Configuration Treating Harmful Emissions in Diesel Engine Exhaust

作　　者：赵卫东[1] 蔡忆昔[1] 吴江霞[1] 李小华[1] 

机构地区：[1]江苏大学,镇江212013

出　　处：《中国机械工程》2007年第22期2760-2765,共6页China Mechanical Engineering

基　　金：国家自然科学基金资助项目(50276025);江苏省高校自然科学重大基础研究项目(06KJA47004)

摘　　要：分析了低温等离子体转化柴油机排气中有害成分的反应机理,设计了三种不同结构类型的低温等离子体反应器,并进行了基于发动机台架的实验研究。研究结果表明,低温等离子体对柴油机排气中的颗粒物及NO有较好的转化作用,采用全流式低温等离子反应器,延长排气在反应器中的滞留时间,有利于提高能量利用率及排气中颗粒物、NO的分解转化率。Reaction mechanism of non--thermal plasma treating diesel engine exhaust was discussed, and three non--thermal plasma reactors of different configuration were presented. Comparative experiments on diesel engine were carried out. The experimental results show that. Non--thermal plasma can decompose particulate matter and convert NO to NO2 in diesel exhaust effectively,non-- thermal plasma reactors of full--flow have better treating results and higher energy utilization efficiency than those non--thermal plasma reactors of part--flow. Prolonging the exhaust＇s staying time in the non--thermal plasma reactors can improve the conversion ratio of harmful matters such as particulate matter, NO.

关 键 词：介质阻挡放电 低温等离子体 柴油机 氮氧化物 微粒 

分 类 号：TK421.5[动力工程及工程热物理—动力机械及工程]