排板式介质阻挡放电等离子体降解苯的研究

考察了自制排板式等离子发生器对不同进气条件(进气浓度、进气流量和进气湿度)下含苯气的降解效果。结果表明,苯降解率随进气浓度和进气流量的提高而降低,但在高进气浓度和高进气流量下,苯降解率仍保持在50%以上。苯降解率在进气湿度约30%时达到最大值,过低和过高的进气湿度都不利于苯的降解。采用多级串联可提高等离子发生器对高进气浓度和高进气流量的适应能力,4级串联较单级时的苯降解率最高可提高39%。排板式等离子体发生器可作为未来等离子体发生器工业化的重点研发对象。

Study on Plate Multilayer Dielectric Barrier Discharge for Benzene Abatement

This study investigated the degradation of benzene with plate multilayer type dielectric barrier discharge plasma generators under different conditions(inlet concentration,inlet flow,and inlet humidity).Results showed thatthe degradation efficiency of benzene decreased with the increase of inlet concentration and inlet flow,but it still remained above 50%at high level of inlet concentration and inlet flow.The maximal degradation of benzene could be attained when the inletrelative humidity was about 30%.Multistage series was used for higher adaptability of the plasma generatorto high inlet concentration and inlet flow,increasing the degradation efficiency of benzene by 39%when a four-stage series was used instead of a single stage.In summary,the plate-type plasma generator can be the key research and development object of the future plasma generator industrialization.