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For an energy-intensive sweetening process, it is common that sour gases from different sources are sent to a single sweetening plant in industries. In our previous work, a multiple gas feed sweetening process was proposed, which can simultaneously improve the purity of H2S and reduce the energy consumption of the plant. This study aims to develop the superstructure of that process and use a simulation-based optimization framework with Aspen HYSYS as the process simulator and particle swarmdoi:10.1021/acsomega.1c05193 pmid:35097267 pmcid:PMC8793078 fatcat:ilnofr5xsvdblifpl55n4u4ypu