萃取精馏分离丁烷/丁烯  

Selection of solvents for separating butane and butene by extractive distillation

作　　者：雷志刚[1] 许峥[1] 周晓颖[1] 廖波[1] 易波[1] 

机构地区：[1]清华大学化学工程系,北京100084

出　　处：《现代化工》2000年第9期32-34,39,共4页Modern Chemical Industry

摘　　要：介绍了两种分离丁烷 /丁烯的方法 ,即乙腈 (ACN)法和二甲基甲酰胺 (DMF)法。对两种工艺流程进行了计算对比 ,DMF法工艺流程比ACN法简单 ,只需 3个塔。计算结果表明 ,DMF法再沸器和冷凝器能耗分别比ACN法降低 33.7%和 2 2 .7% ,选择DMF法萃取精馏分离丁烷 /丁烯效果较好。Two flow sheets i.e. acetonitrile (ACN) method and dimethyl formamide (DMF) method for separating butane and butene are described. The comparison of the two processes is made and it is discovered that the DMF method is simpler than the ACN method. It only needs three towers for the operation. The comparison result shows that the energy consumption of the reboiler and the condenser used in the DMF method is 33.7% and 22.7% lower than that of the ACN method. The selection of the DMF method for separating butane and butene by extractive distillation is recommended.

关 键 词：萃取 精馏 丁烷 丁烯 溶剂 分离方法 ACN DMF法 

分 类 号：TQ028[化学工程] TQ221.14