常压非平衡态等离子体降解挥发性烃类污染物

The degradation or volatile hydrocarbon waste gases by non-equilibrium plasma in normal-pressure

采用无声放电产生的非平衡态等离子体，对含有易挥发性有机化合物正己烷、环己烷、苯和甲苯4种典型的烃类废气的空气进行了处理．结果表明，对于一个大气压下正己烷含量（体积分数）为0．26％、0．79％、13％的宁气，在12kV的电压下放电ls，正己烷的降解率分别为88％、81．8％、64．9％．含有环己洗、苯及甲苯浓度为0．26％的空气，在同样的条件下，放电ls后，环己烷、苯及甲苯降解率分别为87．4％、8l％和70．3％，其主要降解产物为CO2和H2O．

A kind of non-equilibrium plasma engendered by silent discharge was utilized to dispose polluted air containing volatile hydrocarbons (he-cane,cyclohexane,benzene and toluene ) v aper.The research result w as that the polluted airwhich contained 0.26%. 0.79% and l.3% of he-cane (V/V),after discharged for I second at 12kV,the degradation ofhe-cane was 88%. 81.8% and 64.9% respechvely;and in the same condition, the POlluted air which contained 0.26% ofcyclohexane,benzene and toluene were degraded after I second discharge, the degradation rates were 87.4%. 8l% and70.3% respeChvely,with the main productS of CO2 and H2O.The influences of pollutant concentration and oxygen concentration on the degradation of volatile hydrocarbons by non-equilibrium plasma method were also stUdied.