天然气与石油2025，Vol.43Issue(6)：65-69,5.DOI:10.3969/j.issn.1006-5539.2025.06.009
天然气脱硫醚技术应用及发展趋势新思考
New perspectives on the application and development trend of natural gas thioether removal technology
摘要
Abstract
Thioethers in natural gas are particularly challenging to remove due to their weak acidity and low partial pressure,making the removal technology complex and the process lengthy.The main engineering-applicable thioether removal technologies include solvent absorption,solid adsorption and catalytic conversion methods.In the solvent absorption method,the acid gas desorbed during the solution regeneration process still faces challenges regarding its disposition or thioether removal.At the same time,this method encounters issues such as solvent foaming,large flash vapor volumes,and significant impact from heavy hydrocarbons.In the solid adsorption process,thioethers are directly adsorbed,but the adsorption capacity is limited and the sulfur loading is low.Further more,the adsorbents also co-adsorbs carbon dioxide and heavy hydrocarbons.During the regeneration cycle,the adsorbed thioethers are desorbed,which means they are not permanently removed from the system.For catalytic conversion combined with adsorption method,the thioethers are first converted into the more readily adsorbed hydrogen sulfide via a catalyst,and can completely remove thioethers with solid adsorbent for hydrogen sulfide.However,it faces challenges such as catalyst deactivation,the need for hydrogen and oxidant addition to the natural gas system,high energy consumption at elevated temperatures,and high engineering investment.Based on the analysis of thioether removal principles and practical engineering applications,it is proposed that for natural gas streams with low processing volume,low thioethers content,absence of hydrocarbons,and where hydrogen incorporation is acceptable,the catalytic conversion combined with adsorption method can be adopted to remove thioethers.For complex large-scale natural gas purification processes integrated with comprehensive natural gas utilization,the combination of solvent absorption and catalytic conversion methods can be adopted for thioether removal.These findings provide valuable insights for the selection and development of natural gas thioether removal technologies.关键词
硫醚脱除/催化转化/天然气净化/固体吸附Key words
Thioether removal/Catalytic conversion/Natural gas purification/Solid adsorption引用本文复制引用
祁亚玲,高鑫,江凤,张迪凡,韩淑怡..天然气脱硫醚技术应用及发展趋势新思考[J].天然气与石油,2025,43(6):65-69,5.基金项目
中国石油工程建设有限公司科研课题"超大型中高含硫天然气处理装置关键技术研究"(2023ZYGC-02-01) （2023ZYGC-02-01）
