摘要
考察了甲醛在平板式和管式两种介质阻挡放电(DBD)等离子体反应器中的降解能耗以及两种反应器中放电电压、甲醛初始质量浓度和停留时间对甲醛降解率的影响.结果表明:与管式等离子体反应器相比,平板式反应器的甲醛降解能耗大大降低(从55.0W.h/m3降低至12.8W.h/m3);管式反应器和平板式反应器的甲醛降解率均随着放电电压的升高而增大,并分别在11 kV和18 kV处出现拐点,随后降解率增幅减小;甲醛降解率随初始质量浓度的增加先增大后降低,随停留时间的延长而增大.
This paper deals with the energy consumptions for the formaldehyde discharge （DBD） plasma reactors respectively with tube and flat pIate types. It degradation in two dielectric barrier aims to reveal the influences of discharging voltage, initial formaldehyde mass concentration and residence time on the degradation rate of formaldehyde. Experimental results indicate that （1） the energy consumption in the fiat-plate reactor （12. 8Woh/m^3） is far below that of the tube reactor （55.0 Woh/m^3 ） ; （2） the degradation rates of formaldehyde in both the tube and the flat-plate reactors greatly increase with the discharging voltage, then the increase degrees become low at the voltages of 11 kV and 18 kV, respectively ; concentration and then decreases, and （3） the degradation rate at first increases with the initial formaldehyde mass but it continuously increases with the extension of the resistance time.
出处
《华南理工大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2008年第12期52-55,共4页
Journal of South China University of Technology(Natural Science Edition)
基金
广东省科技计划项目(2005B50101001)
广东省-教育部产学研合作项目(2007B090400069)
关键词
介质阻挡放电
等离子体
甲醛
降解率
能耗
dielectric barrier discharge
plasma
formaldehyde
degradation rate
energy consumption
