乙硫醇在脉冲电晕反应器内的降解特性  

Study on the Decomposition Characteristics of Ethanethiol in A Pulse Corona Reactor

作　　者：施耀[1] 阮建军[1] 李伟[1] 聂勇[1] 谭天恩[1] 

机构地区：[1]浙江大学环境工程系,浙江杭州310027

出　　处：《化学反应工程与工艺》2004年第4期316-321,共6页Chemical Reaction Engineering and Technology

基　　金：杭州市"5112"工程专项基金(2002121A13)

摘　　要：应用脉冲电晕放电,在线板式反应器内对乙硫醇的降解特性进行了实验研究,考察了峰值电压、重复频率、进口浓度、介质阻挡等单因素对去除率的影晌。结果表明,脉冲电晕放电能有效地去除气体中的恶臭物乙硫醇。当进口浓度365mg/m3、处理气量10m3／h、峰值电压70kV、重复频率200s-1时,乙硫醇去除率可达85％,此时反应器的能量利用率为12.2g／(kW·h)。陶瓷板阻挡的使用有助于去除率的提高,当能量密度为65kJ／m3时,使用和未使用陶瓷板乙硫醇的去除率分别为93％和80％。乙硫醇中硫元素主要转化为二氧化硫,还发现有单质硫产生。Decomposition of ethanethiol in air was investigated experimentally utilizing a wire plate pulse corona reactor. A new type of high pulse voltage source with a thyratron switch and a Blumlein pulse-forming network (BPFN) was adopted in the experiments. The influences on the removal efficiency, including peak voltage, pulse frequency, initial concentration, dielectric-barrier, were investigated. The results showed that ethanethiol can be treated effectively. The removal efficiency 85% was obtained when initial concentration of ethanethiol was 365 mg/m3, peak voltage 70 kV, pulse frequency 200 s-1, the energy yield of ethanethiol was 12. 2 g / kW-1·h-1. The removal efficiency 93% was achieved by 450mg/m3 ethanethiol when ceramic plate was used and energy density was 65 kJ/m3. While the removal efficiency was only 80% without ceramic plate under the same energy density. The sulfur element of ethanethiol was mainly transformed to sulfur dioxide, and sulfur was found in the reactor.

关 键 词：乙硫醇 去除率 降解特性 脉冲电晕放电 反应器 恶臭 二氧化硫 陶瓷板 气量 硫元素 

分 类 号：TQ651.1[化学工程—精细化工] X51[环境科学与工程—环境工程]