恒沸物、恒沸点与酒精恒沸蒸馏

Constant Boiling Substances,Constant Boiling Point and Constant Boiling Distil lation of Alcohol

酒精恒沸蒸馏是在有水酒精中加入第三种物质,如苯、戊烷、环己烷等,使水与添加物形成另一种恒沸物,并先行挥发,而得到无水酒精。该法在蒸馏时不需将原料全部汽化,也不需要很大回流比,只要能做到使新的恒沸物汽化即可,对设备规模的选型和能量消耗均有益。(陶然)

Constant boiling distillation of alcohol referred the addition of the third substance into watered alcohol such as benzene,pen-tane and cyclohexane etc.to form water and the additive into another constant boiling substance to produce absolute alcohol through advanced volatilization of such formed substance.The method did not require complete evaporation of raw materials during distillation and developed only small reflux ratio.Its application could save energy consumption and its requirement of equipment selection was more convenient.(Tran.by YUE Yang)