Adsorptive distillation ——Novel hybrid separation process

作     者：周明 许春建 余国琮 

作者机构：Chemical Engineering Research Centre China Tianjin 300072 Tianjin University 

出 版 物：《Progress in Natural Science:Materials International》 (自然科学进展·国际材料(英文))

年 卷 期：1995年第3期

页      面：37-44页

学科分类：081704[工学-应用化学] 08[工学] 0817[工学-化学工程与技术] 081701[工学-化学工程] 

基　　金：Project supported by the National Natural Science Foundation of China the Distillation Laboratory of the State Key United Laboratory of Chemical Engineering (China) 

主　　题：adsorptive distillation three-phase equilibrium molecular sieve azeotrope. 

摘      要：If adsorption is accompanied with distillation in a column, the whole process may produce favorable effect on separation. For example, when certain amount of zeolite is added to an ethanol-water mixture, the azeotrope is no longer the barrier of separation. The patent continuous adsorptive distillation process, developed by the authors, is described. This process seems attractive in the separation of a mixture having azeotrope or close-boiling pair and the removal of trace impurity in some fine chemicals by adsorption, as well as leading to the development of selective *** work was undertaken for the separation of ethanol-water mixture near azeotropic composition and for the separation of ethyl acetate-water-n-butanol mixture, using zeolite as adsorbent. The operations were continuous and almost pure ethanol, ethyl acetate and n-butanol were produced.