PURIFICATION TREATMENT METHOD FOR FERMENTED ALCOHOL

摘要

Disclosed is a purification treatment method for producing an absolute alcohol from an aqueous fermented alcohol solution. The method is characterized by reducing the pressure of a mixed steam containing an alcohol and water distilled in a distillation column and supplying the mixed steam to a membrane separation unit. The method can achieve a purification treatment through a more convenient process as a whole and with extremely high energy efficiency.