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

共沸精馏法、萃取精馏法、附法分离法。

By 52%-54% denisty indicator of lithium bromide, it is used to be absorptive refrigerant, hypnagogue and mitigative of medicine, and also to be electrolyte in ion-battery.

52%-54%浓的溴化锂收式制冷剂。在医药中，催眠剂镇静剂。还锂电池的电解质。