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.

通过计算考察板数、进料位置、溶剂比、回流比、萃取剂温等主要响因素改变对萃取精馏过响,为工业应用提供与实践基础。