摘要
Ultrafine particles(UFPs)are harmful to human beings,and their effective removal from the environment is an urgent necessity.In this study,a dielectric barrier discharge(DBD)reactor packed with porous alumina(PA)balls driven by a pulse power supply was developed to remove the UFPs(ranging from 20 to 100 nm)from the exhaust gases of kerosene combustion.Five types of DBD reactors were established to evaluate the effect of plasma catalysis on the removal efficiency of UFPs.The influences of gasflow rate,peak voltage and pulse frequency of different reactors on UFPs removal were investigated.It was found that a high total UFP removal of 91.4%can be achieved in the DBD reactor entirely packed with PA balls.The results can be attributed to the enhanced charge effect of the UFPs with PA balls in the discharge space.The UFP removals by diffusion deposition and electrostatic attraction were further calculated,indicating that particle charging is vital to achieve high removal efficiency for UFPs.
作者
Jing LI
Haiquan LU
Qi WANG
Guojian LI
Shuiliang YAO
Zuliang WU
李晶;陆海全;汪琦;李国建;姚水良;吴祖良(School of Environmental and Safety Engineering,Advanced Plasma-Catalysis Engineering Laboratory for China Petrochemical Industry,Changzhou University,Changzhou 213164,People’s Republic of China;Engineering Research Center of Construction Technology of Precast Concrete of Zhejiang Province,Hangzhou 310018,People’s Republic of China;Anji Runfeng Air Purification Technology Co.Ltd.,Hangzhou 313300,People’s Republic of China;Zhejiang Gongshang University,Hangzhou 310018,People’s Republic of China)
基金
funded by the Open Foundation of Engi-neering Research Center of Construction Technology of Precast Concrete of Zhejiang Province(No.ZZP1902).
作者简介
姚水良,correspondence should be addressed,E-mail:yaos@cczu.edu.cn;吴祖良,correspondence should be addressed,E-mail:wuzuliang@cczu.edu.cn。
