The main factors that influence the extractive distillation were researched such as the theoretical plate number, feedboard, solvent ratio, reflux ratio, the temperature of solvent.

通计算考察了理、进料位置、溶剂比、回流比、萃取剂温等主要影响因素的改变对萃取精的影响,为工业应用提供理与实践基础。