文献类型：期刊文献

英文题名：Selective removal of H2S from refinery dry gas: Advances in absorbents, mechanisms, and process intensification

作者：Zhang, Guangyao[1];Liu, Zihao[1];Wen, Jiazheng[1];Xue, Jinwei[1];Li, Yu[1];Han, Xin[1];Yang, Qiang[1]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China

年份：2026

卷号：387

外文期刊名：SEPARATION AND PURIFICATION TECHNOLOGY

收录：;EI(收录号：20255219809391);WOS:【SCI-EXPANDED(收录号:WOS:001656787900009)】；

基金：The authors gratefully acknowledge the financial support of this work by the Jing-Jin-Ji Regional Integrated Environmental Improvement-National Science and Technology Major Project (Grant No. 2025ZD1203604) and the National Natural Science Foundation of China (Grant No. 52025103) .

语种：英文

外文关键词：Wet desulfurization; Hydrogen sulfide; Refinery dry gas; Selective absorption; Process intensification

摘要：The selective separation and efficient removal of hydrogen sulfide (H2S) from refinery dry gas has emerged as a critical challenge in gas purification, primarily due to the transition of dry gas from plant fuel to high-value chemical feedstock. This shift necessitates precise regulation of interactions to achieve deep purification, but conventional technologies encounter discernible bottlenecks in economic viability and selectivity. This review provides a comprehensive synthesis of recent advances in absorbents, mechanistic understanding, and process intensification strategies tailored to refinery dry gas. Particular attention is devoted to alkanolamines, blended and composite amines, ionic liquids, and deep eutectic solvents, highlighting how molecular design and structural regulation enhance H2S selectivity while mitigating CO2 co-absorption. In parallel, novel approaches such as redox absorption, biodesulfurization, and hybrid systems are evaluated for their potential to couple sulfur recovery with energy efficiency. Mechanistic insights from spectroscopy, quantum chemical calculations, and molecular simulations are integrated to clarify the fundamental pathways of H2S capture. Finally, the review underscores that breakthroughs will depend on the convergence of advanced absorbent development, interfacial reaction engineering, and intensified process design, paving the way toward sustainable refinery gas utilization.