文献类型：期刊文献

英文题名：Effect of carbon dioxide on oxy-fuel combustion of hydrogen sulfide: An experimental and kinetic modeling

作者：Tao, Xun[1];Zhou, Fan[1];Yu, Xinlei[1];Guo, Songling[1];Gao, Yunfei[1];Ding, Lu[1];Yu, Guangsuo[1];Dai, Zhenghua[1];Wang, Fuchen[1]

机构：[1]East China Univ Sci & Technol, Shanghai Engn Res Ctr Coal Gasificat, Shanghai 200237, Peoples R China

年份：2023

卷号：59

起止页码：105

外文期刊名：CHINESE JOURNAL OF CHEMICAL ENGINEERING

收录：;EI(收录号：20232714352889);WOS:【SCI-EXPANDED(收录号:WOS:001028774500001)】；

基金：The project was supported by the National Natural Science Foundation of China (21978092) , Chenguang Program by Educational Administration of Shanghai (21CGA35) , and Yangfan Program by Scientifical Administration of Shanghai (22YF1410300) .

语种：英文

外文关键词：Carbon dioxide; Oxy-fuel combustion of H 2 S; Reaction pathway; Kinetics; Oxidation

摘要：CO2 is an important component in the acid gas and it is necessary to study the effect of CO2 presence on the oxy-fuel combustion of H2S with particular focus on the formation of carbonyl sulfide (COS). The oxyfuel combustion of acid gas was conducted in a coaxial jet double channel burner. The distribution of flame temperature and products under stoichiometric condition along axial (R = 0.0) and radial at about 3.0 mm (R = 0.75) were analyzed, respectively. The Chemkin-Pro software was used to analyze the rate of production (ROP) for gas products and the reaction pathway of acid gas combustion. Both experimental and simulation results showed that acid gas combustion experienced the H2S chemical decomposition, H2S oxidation and accompanied by H2 oxidation. The CO2 presence reduced the peak flame temperature and triggered the formation of COS in the flame area. COS formation at R = 0.0 was mainly through the reaction of CO2 and CO with sulfur species, whereas at R = 0.75 it was through the reaction of CO with sulfur species. The ROP results indicated that H2 was mainly from H2O decomposition in the H2S oxidation stage, and COS was formed by the reaction of CO2 with H2S. ROP and other detailed analysis further revealed the role of H, OH and SH radicals in each stage of H2S conversion. This study revealed the COS formation mechanisms with CO2 presence in the oxy-fuel combustion of H2S and could offer important insights for pollutant control.& COPY; 2023 The Chemical Industry and Engineering Society of China, and Chemical Industry Press Co., Ltd.