A batch extractive distillation process with mixed solvents was studied experimentally in a middle-vessel batch distillation column. 摘要采用一个带有中间贮罐的间歇精馏实验塔，对混合溶剂间歇萃取精馏过程进行了实验研究。
A new method of adopting combined extraction - rectification technique to separate an azeotrope of trimethyl borate and methanol has been narrated in the article. 叙述了采用萃取精馏法分离硼酸三甲酯和甲醇共沸物的新方法。
