碳酸二甲酯提纯方法的研究进展

Study Progress on the Purification Methods of Dimethyl Carbonate

综述了碳酸二甲酯提纯方法的最新研究进展,分别介绍了工业级和电池级碳酸二甲酯的提纯方法。在工业级碳酸二甲酯的提纯方法中,详细介绍了碳酸二甲酯-甲醇二元共沸物的分离方法,在各种分离方法中,膜分离和吸附分离能耗低、效率高,属于新型的分离方法;加压精馏、共沸精馏和萃取精馏具有投资较小、操作方便、产品纯度高等优势,具有较高的工业应用价值。在电池级碳酸二甲酯的提纯方法中,冷却结晶法具有设备简单、操作方便、节能的优点,比精馏法更具优势。

To summary the purification methods of dimethyl carbonate including industry-scal and battery-scal dimethyl carbonate.About purification of industry-scal dimethyl carbonate,to detaily introduce the separation of methanol-dimethyl carbonate azeotrope including membrane separation,adsorption separation,high-pressure distillation azeotripic distillation and extractive distillation.Separation methods of membrane or adsorption,which had the characteristics of low energy consumption and high efficiency,were new separation methods.High-pressure distillation,azeotropic distillation and extractive distillation,which had less investment,operated more expediently,obtained higher purity product,and had wider industrial foreground.About purification of battery-scal dimethyl carbonate,crystallization used simple equipment,operated more expediently,consumed less energy,showed more advantage than distillation.