等离子体净化柴油车尾气的能耗研究

Research on the Energy Consumption of Plasma Technique Used to Treat Waste Gases of Diesel Car

分析了低温等离子体净化柴油车尾气技术的类型、工作原理和主要技术路线,指出在该技术的研制过程中,研究者多关注于废气的处理效果而忽视了能量消耗的控制。提出柴油车等离子体技术能量消耗评价指标的限值,即允许的能量密度应低于12 J/L,并进行了定量分析,指出该技术理论上虽然可以处理柴油车的主要污染物HC、CO、NOX、PM等,但在现有技术条件下,等离子体发生器消耗的能量过高。提出该技术只有与催化转化技术结合,才是现实可行的技术路线,最后分析了为降低能量消耗而须采取的主要技术措施。

The kind, mechanism and main technique methods of the non-thermal plasma technique are analyzed. The main shortcomings of this technique lie in that too much attention is paid to the treating effect of waste gases, and control on energy consumption is neglected. The permitted value of evaluation criterion on the energy consumption of diesel car using plasma technique is proposed initially, i. e., the permitted energy density should be less than 12 J/L. The quantitative analysis is also performed. Though the main pollutions of diesel car such as HC, CO, NOx ,PM et al can be treated theoretically, on present condition, plasma provider consumes too much energy. It is suggested that the technique of combining the catalysis with the plasma technique is feasible. The main measures that must be adopted to reduce the energy consumption are proposed.