加盐萃取-恒沸精馏联合过程研究——Ⅲ.乙酸乙酯提浓新工艺  

A Combined Process of Salt Extraction with Azeotropie Distillation for Separation of Acetic Acid-Water Mixture Ⅲ.A Novel Process for Purification of Ethyl Acetate

作　　者：雷良恒[1] 

机构地区：[1]清华大学化工系,北京100084

出　　处：《石油化工》1990年第11期749-752,共4页Petrochemical Technology

摘　　要：研究了加盐萃取-恒沸精馏过程提纯乙酸乙酯的新工艺。进行了盐的选择,测定了 KAc 对乙酸乙酯-乙醇-水体系液液平衡的影响。测定了 KAc 的浓度分别为2.125g/ml,2.408g/ml,和2.896g/ml(饱和)时的平衡关系。并进行了小型工艺实验和年处理100吨粗酯的扩大工艺试验。初步估算新工艺比旧工艺节能25%,产量提高30%。A novel process for purification of ethyl acetate by combined salt extractionwith azeotropic distillation was developed.The proper salt was selected.The effects of KAc on liquidliquid equilibrium of ethyl acetateethanolwater system were studied.Equilibrium data were determined under KAc concentrationsof 2.125g/ml,2.408g/ml and 2.896g/ml(saturated).Both small scale experimentsand scale-up experiments of 100 ton raw ethyl acetate/yaer capacity were carriedout.A preliminary estimate shows that the process saves energy by 25% and increases yield by 30% compared with previous processes.

关 键 词：乙酸乙酯 萃取 精馏 

分 类 号：TQ225.241[化学工程—有机化工]