碳酸二甲酯合成工艺模拟的研究进展

综述了近年来碳酸二甲酯(DMC)的非光气法合成工艺和DMC产品的分离工艺的模拟研究报道。重点介绍了酯交换法反应精馏工艺和分离工艺的模拟结果,尿素醇解法催化精馏工艺的非平衡级模拟的结果。在DMC产物的变压精馏、萃取精馏和共沸精馏的主要分离工艺中,变压精馏和萃取精馏是分离甲醇-DMC共沸物效率较高的两种工艺。

Progress in Simulation of Dimethyl Carbonate Synthesis Process

The recent progresses in the simulation of the process and the product separation for synthesis of dimethyl carbonate(DMC)without onphosgene were reviewed.Many literatures focused on the simulation of DMC synthesis by transesterification method with reactive distillation.The catalytic distillation and the product separation for DMC synthesis from urea and methanol were introduced.The three processes for the product separation,namely pressure-swing distillation,extractive distillation and azeotropic distillation,were analyzed,in which the pressure-swing distillation process and the extractive distillation process were more effective for separation of methanol-DMC azeotrope.