介质阻挡放电降解甲苯的实验研究

Study on Decomposition of Toluene by Dielectric Barrier Discharge

采用介质阻挡放电进行降解甲苯的研究。考察不同外加电压和不同电源频率对甲苯降解率和能量密度(SED)的影响,根据降解率和SED的对应关系分析不同外加电压和电源频率下的能量利用效率。研究发现,甲苯降解率和SED均随外加电压和电源频率的升高而升高,但能量利用状况存在较大差距。当固定电压为20 kV时,100 Hz频率下的能量效率为7.8 g/(kW.h),降解率为78.9%,是实验范围内的最佳工艺条件。

Decomposition of toluene by dielectric barrier discharge（DBD） is carried out in the study.The influence of applied voltage and AC frequency on toluene decomposition efficiency and SED is studied and then the energy efficiency is also analyzed.It suggests that toluene decomposition efficiency and SED increases with the increase of voltage and frequency,whereas there is great difference in energy use condition.When voltage is fixed on 20kV and the energy efficiency of 100 Hz is 7.8 g/（kW·h）,the decomposition efficiency can reach 78.9%.Through synthetical evaluation on decomposition efficiency and energy efficiency,100 Hz AC frequency is the best electric condition.