在氧化和还原氛围下脉冲电晕法降解二硫化碳废气

采用线-筒式脉冲电晕反应器对二硫化碳(CS2)模拟废气的去除效果进行了实验研究.实验以氩气为载气,考察了氧气和氢气对CS2去除效果的影响.结果表明CS2的去除率随脉冲电压升高而增大;氧气能够促进CS2的氧化分解,CS2去除率可达97%;有氧气存在时,CS2的最终氧化分解产物为CO、CO2、COS和SO2;当添加氢气时,反应产物主要为H2S和CH4.当反应器内筒表面加Ca(OH)2吸收剂时,CS2去除率有小幅度提高,同时气体产物中未检测到SO2和H2S,表明CS2的分解产物SO2和H2S气体被反应器中的Ca(OH)2吸收.实验还发现水汽的存在不利于CS2的氧化分解

Decomposion of Carbon Disulfide by Pulse Corona Under Oxidizing and Reducing Atmosphere

The removal of CS₂ by a wire-in-tube pulsed corona reactor was experimentally investigated. The effects of O₂ and H₂ in Ar gas on the removal of CS₂ were examined. It was shown that the removal of CS₂ increased with the increase of input pulse voltage. The decomposition of CS₂ was improved in the presence of O₂ in gas stream and the maximal removal was over 97%. The main gaseous products of CS₂ decomposition with the addition of O₂ in Ar gas were CO, CO₂, COS and SO₂, while, with the presence of H₂ in Ar gas, the main products of CS₂ decomposition were H₂S and CH₄. It was found that with the co-existence of sorbent Ca(OH)₂ in the reactor, the gaseous products of CS₂ decomposition (SO₂ and H₂S) were not detected, showing that the products were absorbed by the sorbent Ca(OH)₂. It was also found that the removal of CS₂ decreased when there was water vapor in gas stream.