azeotropy

1.The energy consumption of azeotropy distillation was low but its energy-saving effects were inferior to that by multiple-effects extraction distillation.

共沸精馏法能耗低,节能效果不如多效萃取精馏,共沸精馏和多效萃取精馏进行控制;

2.Energy-saving ethanol dehydration techniques to produce dehydrated alcohol mainly included four measures as azeotropy distillation, extraction distillation, absorptive process and membrane separation.

摘要节能型乙醇脱水制备无水乙醇的方法主要有4种：共沸精馏法、萃取精馏法、吸附法和膜分离法。