采用低温等离子体同步净化柴油机PM和NO_x(二):试验研究

采用静电旋风捕集技术与等离子体协同烃类选择性还原技术相结合的方法研制了柴油机后处理装置,在柴油机试验台架上进行了实际柴油机排气净化试验,考察了实际柴油机排气环境下低温等离子体净化柴油机NOx和PM的实际效果。研究结果表明,随着进口流速的增加静电旋风捕集效率略有下降;低温等离子体降低了炭烟的再生温度,炭烟在等离子体和催化的共同作用下280℃即可催化燃烧;等离子体催化系统在外加还原HC的条件下NOx转化率最高可达60%。

Research on Removing PM and Nox Pollutants Simultaneously with Non-thermal Plasma: Experiment

The aftertreatment instrument was developed by combining electrostatic centrifugal precipitating technology with non-thermal plasma cooperating with hydrocarbon selective catalytic reduction technology.The experiment of removing PM and NOx pollutants was carried out on the test bench and the effect of non-thermal plasma on reducing PM and NOx pollutants was analyzed.The results show that the efficiency of electrostatic centrifugal precipitating decreases slightly with the increase of inlet velocity.The non-thermal plasma lowers the regeneration temperature of soot.With the non-thermal plasma and catalyst,the soot can be combusted at 280 ℃.With the non-thermal plasma,catalyst and HC reduction,the maximum conversion rate of NOx can reach 60%.