To　further　improve　process　economy,Aspen　Plus　and　Aspen　Energy　Analyzer　are　used　to　perform　simulation　and　energy　efficiency　integration　optimization　on　the　process　for　production　of　dimethyl　sulfide　from　sulfur-containing　waste　gas.The　optimization　results　are　gained　as　follows:the　minimum　heat　transfer　temperature　difference　is　13℃;　the　hot　and　cold　end　temperatures　of　pinch　are　77.2℃and　54.2℃,respectively.After　optimization,the　energy　consumption　of　the　hot　utility　of　the　whole　process　decreases　by　85.9%　and　that　of　cold　utility　decreases　by　63.1%.The　simulation　and　optimization　results　show　that　the　process　has　good　economy　and　environmental　benefits,and　the　optimization　can　provide　theoretical　guidance　for　the　treatment　of　sulfur-containing　flue　gas.　©　2019,　China　National　Chemical　Information　Center.　All　right　reserved.