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

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.