分壁式萃取精馏分离乙腈-正丙醇的模拟研究  

Simulation of the separation of acetonitrile and n-propanol by extractive distillation in dividing wall column

作　　者：马春蕾[1] 唐建可 王琦[1] 

机构地区：[1]太原工业学院化学与化工系,山西太原030008

出　　处：《现代化工》2017年第4期175-178,共4页Modern Chemical Industry

基　　金：太原工业学院院级青年科学基金项目(2016LQ20)

摘　　要：利用Aspen Plus软件,采用N,N-二甲基甲酰胺作萃取剂,研究了分壁式萃取精馏和常规双塔萃取精馏方法对该混合物的分离,均能实现混合物的有效分离。其中分壁式萃取精馏得到正丙醇和乙腈的质量分数分别为99.12%和99.59%。和常规双塔萃取精馏相比,分壁式萃取精馏流程再沸器热负荷降低11.02%,冷凝器热负荷降低17.69%,实现了有效节能。Aspen Plus simulation software is used to simulate the separation process of acetonitrile and n-propanol by extractive distillation in dividing wall column（ E-DWC） and in conventional double-column,using N,Ndimethylformamide as extractive agent. The mass fraction of n-propanol and acetonitrile can reach 99. 12% and 99. 59%by E-DWC,respectively. In comparison with extractive distillation in conventional double-column,energy saving of reboiler and condenser using E-DWC are reduced by 11. 02% and 17. 69%,respectively. Energy saving is effectively realized.

关 键 词：乙腈 正丙醇 ASPEN Plus 分壁式萃取精馏 

分 类 号：TQ028.3[化学工程]