对于挥发性相似的两种组分,通常采用萃取精馏的分离方法,然而需要加入高沸点、不易挥发的溶剂来加大组分之间的相对挥发度。这种工艺增加了能耗,而且通常所用的溶剂有毒有害。为了在萃取精馏分离技术中减少能耗以及避免使用 For both volatiles with similar volatility, extractive distillation is often used as a separation method, however, high boiling, less volatile solvents need to be added to increase the relative volatility between the components. This process increases the energy consumption, and usually the solvent used is toxic and harmful. In order to reduce energy consumption and avoid the use of extractive distillation separation technology