低温等离子体结合吸附处理含苯废气  

Benzene Removal by the Combination of Non-thermal Plasma and Adsorption

作　　者：孙彪 陈光辉[1] 赵乾斌 郭亚逢 隋立华 宋项宁 

机构地区：[1]青岛科技大学化工学院,山东青岛266042 [2]中国石油化工股份有限公司青岛安全工程研究院,山东青岛266071

出　　处：《工业安全与环保》2018年第1期9-12,共4页Industrial Safety and Environmental Protection

摘　　要：以苯废气为降解对象,利用介质阻挡放电(DBD)产生等离子体进行处理,考察了放电频率、停留时间和气体湿度对苯去除效率的影响。研究发现,在一定浓度和电压下,等离子体对苯的去除率随放电频率的增加而升高,随着废气停留时间的增加而升高,随废气湿度的增大先升高后下降,当相对湿度为20%左右时效率最高。在利用介质阻挡放电结合MOF材料吸附处理含苯废气时,控制入口苯质量浓度小于500mg/m^3,可将出口苯质量浓度降解至4 mg/m^3以下,苯去除率保持在98%以上。This research investigates the effects of discharge frequency, retention time and humidity on benzene re- moval efficiency to degrade benzene waste gas, in which plasma is formed by the discharge of dielectric barrier. It is found that under certain concentration and voltage, the removal of plasma on benzene increases with the increase of discharging efficiency, increases with the increase of the retention time of waste gas, while first increases and then declines with the increase of gas humidity and it reaches the highest efficiency when relative humidity is about 20%. When using dielectric discharge combined with MOF material containing benzene waste gas in the treatment, the entry benzene concentration is controlled less than 500 mg/m3 , the exit benzene concentration drops below 4 mg/m3 , the removal rate of benzene can keep above 98%.

关 键 词：苯 介质阻挡放电 吸附 去除率 

分 类 号：X701[环境科学与工程—环境工程]