单极性脉冲电源结合介质阻挡放电降解VOCs

Removing Toluene and Chlorobenzene by Dielectric Barrier Discharge Introduced Monopolar Pulse-Power Supply

将单极性脉冲高压电源引入介质放电阻挡反应器(螺旋棒式不锈钢电极、石英玻璃介质),分别对氯苯 和甲苯的分解特性进行实验．结果发现,这种放电形式可以高效注入能量,兼有脉冲电晕放电和介质阻挡放电 的特点．高压脉冲电压使电场强度急剧增强,产生瞬间大功率放电和高能粒子,可以实现对VOCs化学键的高效 裂解,从而提高对挥发性有机化合物的降解作用．此外,实验还表明,在相同条件下,氯苯比甲苯难以分解．

Dielectric barrier discharge (stainless-steel electrode with screw, quartz barrier) under a monopolar pulse voltage was studied to decompose toluene and chlorobenzene. Experimental results indicate that this reactor can effectively inject pulsed energy, and can combine advantages of short pulse corona discharge and dielectric barrier discharge. High-voltage pulse enhance the intensity of electric field and produce strong instant discharge and energized particles responsible for effective fission of chemical bonds, consequently, removal efficiency of VOCs is increased. In addition, experimental results indicate that chlorobenzene is removed more difficultly than toluene.