反应精馏（Reactive Distillation）工艺的出现，彻底改变了长期以来 人们对反应和分离过程 的传统认识，它使化学反应过程和精馏分离 的物理过程结合在一起，是伴有化学反应的新型特殊精馏过程。

在进行反应的同时用精馏方法分离出产品的过程。可以是为提高分 离效率而将反应与精馏相结合的一种分离 操作；也可以是为了提高 反应转化率而借助于反应精馏分离手段的一种反应过程。

萃取精馏和恒沸精馏相似，也是向原料液中加入 第三组分(称为萃取剂或溶剂)，以改变原有组分 间的相对挥发度而得以分离。不同的是，要求萃 取剂的沸点较原料液中各组分的沸点高很多,且不 与组分形成 恒沸液。萃取精馏常用于分离各组分 沸点( 挥发度) 差别很小的溶液。

The emergence of Reactive Distillation process has completely changed people's traditional understanding of reaction and separation process for a long time. It combines the chemical reaction process and the physical process of rectification and separation together. It is a new and special type of chemical reaction. Distillation process.

The process of separating products by rectification method while carrying out the reaction. It can be a separation operation that combines reaction and rectification to improve the separation efficiency; it can also be a reaction process that uses reactive distillation separation means to improve the conversion rate of the reaction.

Extractive distillation is similar to azeotropic distillation in that a third component (called extractant or solvent) is added to the raw material liquid to change the relative volatility of the original components to separate them. The difference is that the boiling point of the extractant is required to be much higher than the boiling point of each component in the raw liquid, and it does not form a constant boiling liquid with the components. Extractive distillation is often used to separate solutions with very small differences in boiling points (volatility).