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中文摘要：
对污水处理厂污泥空干基进行了低温热解实验，研究了N2、空气和CO2气氛下六种含硫气体（H2S、SO2、CH3SH、CS2、C2H6S2和COS）的释放特性，分析了其释放机理。结果表明：污泥低温热解时释放的含硫气体主要以H2S、SO2和CHaSH形态为主，同时伴有少量CS2、C2H6S2和COS生成。H2S、SO2和CH3SH生成机理以有机硫转化途径为主。FeS2与CH4的反应是CS2生成的可能途径，CH3SH的存在为C2H6S2的生成提供了条件。CO2促进了固态有机硫向气态硫的转化，O2促进了已生成的CH3SH的分解。
英文摘要：
The emission of 6 sulfur-containing gases （H2S, SO2, CH3SH, CS2, C2H6S2＆COS） were investigated during sewage sludge pyrolysis at low temperature. N2, air and CO2 were employed as carrier gases respectively. It was shown that the concentrations of H2S, SO2 and CH3SH are much higher than those of CS2, C2H682 and COS in these 6 sulfur-containing gases. It was proposed that H2S, SO2 and CH3SH were mainly formed from transformation of organic sulfur in sewage sludge. The reaction between FeS2 and CH4 was concluded the main cause of CS2 formation, CH3SH was believed as a precursor of C2H682. The transformation from organic sulfur in sewage sludge to sulfur-containing gases was improved by CO2. 02 also played a dominant role during decomposition process of CH3SH.
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