甲醇-四氢呋喃属于共沸体系，传统分离工艺采用双塔串联萃取工艺进行分离纯化，即引入第三种组分，该工艺能耗、占地面积等相对较高。该研究尝试提出了一种新的工艺方法，即热耦萃取分离工艺（精馏工艺与萃取工艺相耦合）；对相关工艺参数进行优化设计分析，得到最佳操作参数；与传统双塔萃取工艺相比，热耦萃取工艺可减少能耗约5%，同时设备投资及占地面积也相应减少。

Methanol-tetrahydrofuran azeotropic system is traditionally separated and purified by two-column series extraction process,in which the third component is used.Such a traditional process consumes relatively high energy and occupies large land area.This study proposes a new separation process for separation of methanol-tetrahydrofuran azeotropic system,named thermal-coupled extraction separation process which integrating distillation process and extraction process.The optimum operation parameters are determined through optimization design analysis.Compared with traditional process,this thermal-coupled extraction distillation process can save energy by about 5% and cut down capital investment,and needs smaller land area.

郝增华(1980-),女,硕士,讲师,hgr2018@126.com