Research on degradation mechanism of trichlorobenzene and Hg^(0) by nonthermal plasma catalysis  

作　　者：边文璟 竹涛 朱繁 崔岩 王建华 史光 李加旺 郝景章 Wenjing BIAN;Tao ZHU;Fan ZHU;Yan CUI;Jianhua WANG;Guang SHI;Jiawang Li;Jingzhang HAO(Institute of Environmental Protection and HVAC Engineering Technology,MCC Capital Engineering&Research Incorporation Limited(CERI),Beijing 100176,People's Republic of China;Institute of Atmospheric Environmental Management and Pollution Control,China University of Mining&Technology,Beijing 100083,People's Republic of China)

机构地区：[1]Institute of Environmental Protection and HVAC Engineering Technology,MCC Capital Engineering&Research Incorporation Limited(CERI),Beijing 100176,People’s Republic of China [2]Institute of Atmospheric Environmental Management and Pollution Control,China University of Mining&Technology,Beijing 100083,People’s Republic of China

出　　处：《Plasma Science and Technology》2023年第11期114-121,共8页等离子体科学和技术（英文版）

基　　金：supported by National Natural Science Foundation of China(No.52270114)。

摘　　要：Aiming at mercury and dioxin in fire coal gas as research objects,nonthermal plasma(NTP)catalytic technology was used to investigate the degradation effect of operating condition parameters on mixed pollutants in mixed flue gas condition,and to explore the synergistic degradation of Hg0and TCB(1,2,3-trichlorobenzene,TCB)under mixed flue gas conditions.The research results showed that the conversion efficiency of mercury and TCB increased with the additional output of voltage,and decreased with the increase of the gas flow rate.Under optimal reaction conditions:voltage=17 k V,frequency=300 Hz,gas flow rate=21 min^(-1),the conversion efficiency of Hg^(0)and TCB reached the highest 91.4%and 84.98%,respectively.In the NTP catalytic system,active free radicals played an important role in the synergistic conversion of mercury and TCB,which have a competitive effect,to make the conversion efficiency of mixed pollutants lower than a single substance.In the mixed flue gas condition,the mixed gas has an inhibitory effect on the synergistic conversion of mercury and TCB.Kinetic modeling of NTP catalytic synergistic reaction was established.Under three conditions of TCB,mercury and TCB,mixed simulated flue gas,the NTP catalytic technology showed a quasi-firstorder kinetic reaction for the degradation of TCB.According to the synergistic effect of NTP and composites,the transformation and degradation of TCB mainly included two processes:TCB and ring opening,and Hg^(0)was finally oxidized to Hg^(2+).

关 键 词：fire coal Hg°and TCB non-thermal plasma catalytic technology RADICAL kinetic modeling(Some figures may appear in colour only in the online journal) 

分 类 号：X701[环境科学与工程—环境工程]