电晕-介质阻挡协同放电降解连续流丙酮  

Corona dielectric barrier co-discharges for acetone degradation in a continuous flow

作　　者：王星敏 吴潇潇 何龙斌 丁社光 余纯丽 

机构地区：[1]重庆工商大学环境与资源学院,重庆400067 [2]催化与功能有机分子重庆市重点实验室,重庆400067

出　　处：《环境工程学报》2018年第3期848-854,共7页Chinese Journal of Environmental Engineering

基　　金：重庆市社会事业与民生保障科技创新专项(cstc2015shmszx20003);重庆市科委应用开发项目(cstc2014yykfA-5003);重庆市教委应用基础项目(KJ1400607)

摘　　要：利用自制等离子体反应器开展电晕-介质阻挡协同放电降解连续流丙酮研究,采用均匀设计法获得适宜的丙酮降解参数及其相互关联性,通过解析电晕-介质阻挡协同放电机理,结合丙酮降解热力学性能分析,获得影响丙酮降解的主要因素。结果表明:丙酮降解的适宜条件为反应器电压9.60kV、空气流量1.4L·min^(-1)、在丙酮气体流量20 mL·min^(-1)的连续流体系下,电晕-介质阻挡协同放电3 min、初始质量浓度为1.807 mg·L^(-1)的丙酮单次循环降解率可达35.01%。解析等离子体放电过程和热力学性质发现,丙酮降解受协同放电活性粒子与反应温度的双重影响。A homemade plasma reactor is designed for acetone degradation through corona dielectric barrier co-discharge in a continuous flow. The operation conditions for acetone degradation were carefully optimised using a uniform design method. The results show that the acetone degradation rates could reach 35.01% with the initial concentration of 1.807 mg-L-1, and under an acetone and air gas flow of 20 mL-min-1 and 1.4 L-min-1, respectively. The corona media barrier co-discharge was carried out for 3 min under 9.60 kV. The factors that induce the acetone degradation are identified based upon the studies on the mechanism of corona dielectric barrier co-discharge and thermodynamic analysis. It concludes that both corona dielectric barrier co-discharges and reaction temperature could affect the degradation of acetone.

关 键 词：低温等离子体 协同放电 丙酮 臭氧消耗率 

分 类 号：X511[环境科学与工程—环境工程]