The contents of the method are as follows: addition of entainer such as benzene, hexahydrobenzene and pentene etc, rectification make entainer, alcohol and water form ternary boiling material, ...

• 采用向酒精溶液添加夹带剂(苯、环己烷、戊烷等)进行精馏,使夹带剂、乙醇、水形成三元共沸物,造成沸点差,从而精馏出纯度高的酒精。