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|1. (WO2018139635) METHOD FOR PRODUCING HIGH CONCENTRATION ALCOHOL|
|Applicants:||MITSUBISHI CHEMICAL CORPORATION
|Title:||METHOD FOR PRODUCING HIGH CONCENTRATION ALCOHOL|
The present invention addresses the problem of improving the production capacity of an alcohol in a method for producing a high concentration alcohol, said method using a distillation column and an adsorption/desorption column. A method for producing a high concentration alcohol by dehydrating a water-alcohol mixture liquid, which comprises: a distillation step wherein the water-alcohol mixture liquid is introduced into a distillation column so as to obtain a crude alcohol; and an adsorption/desorption step wherein some of the crude alcohol is introduced into an adsorption/desorption column so as to obtain a high concentration alcohol. In this method for producing a high concentration alcohol, other some of the crude alcohol is introduced into a dehydration device so as to obtain a high concentration alcohol.