【摘要】 为了提高介质阻挡放电(d ielectric barrier d ischarge,DBD)等离子体的处理效率,研究了内外介质组成分别为:(1)石英+石英;(2)陶瓷+石英;(3)陶瓷+陶瓷这3种情况下苯的降解情况。试验结果表明,在处理低浓度含苯废气时,陶瓷+陶瓷效果最好;陶瓷(内管)+石英(外管)在处理高浓度含苯废气时显示出优势。通过对气相产物和固相结焦产物的分析验证了DBD能有效降解苯,降解产物不会带来新的污染。进一步分析了实验条件和介质材料的变化对DBD降解苯的影响机理。更多还原

【Abstract】 In order to enhance the DBD plasma′s decomposition efficiency,we studied the discharge characteristics of two typical dielectric materials quartz glass and porcelain with combination of(1) quartz glass(inner tube) + quartz glass(exterior tube);(2)porcelain(inner tube)+quartz glass(exterior tube);(3)porcelain(inner tube) + porcelain(exterior tube)."Porcelain + porcelain" showed the best function on decomposing benzene with low concentration while"porcelain(inner tube) + quartz glass(exterior tube)" was the most effective combination on treating high concentration benzene.We proved the decomposition of benzene won′t cause new pollution to the environment by analyzing the gas-phased outcome and polymerized substances,then further studied the mechanism of dielectric materials′influences on the DBD plasma′s decomposition of benzene.更多还原