萃取精馏分离二异丙醚-异丙醇共沸物的流程模拟  

Flowsheet Simulation and Optimization of Separating 2-isopropoxypropane-2-propanol Using Extractive Distillation

作　　者：杨磊[1] 张志刚[1] 黄动昊[1] 贾鹏[1] 李文秀[1] 

机构地区：[1]沈阳化工大学化学工程学院,辽宁沈阳110142

出　　处：《沈阳化工大学学报》2014年第2期115-118,共4页Journal of Shenyang University of Chemical Technology

基　　金：国家自然科学基金(21076126)

摘　　要：选用N-N-二甲基乙酰胺(DMAC)为萃取剂,用ASPEN PLUS11.1化工模拟软件中的RadFrac单元操作模块,采用UNIFAC物性计算方法,通过优化各操作参数,对二异丙醚和异丙醇二元共沸物系的分离进行萃取精馏模拟计算.并考察原料进料位置、溶剂进料位置、溶剂比、回流比对二异丙醚纯度的影响.结果表明:在适宜的操作条件下,塔顶二异丙醚的纯度可达到99.94%,模拟计算的结果对于实现工业化的分离有参考作用.In the chemical industry,the mixture of 2-isopropoxypropane and 2-propanol is very typical binary azeotrope.In this paper,the solvent was N,N-dimethylacetamide.Based on the previous experimental validation,a computer simulation for RadFrac unit operation block in ASPEN PLUS11.1 was adopted.Extractive distillation simulation calculation for the separation of binary azeotropic mixture 2-isopropoxypropane-2-propanol was carried out by choosing UNIFAC as the physical property method of calculation and by changing operation parameters.The simulation results showed that the mass rate of overhead 2-isopropoxypropane was up to 99.94 %.A good theoretical basis for separation of industrialization was provided by the application of simulation calculation.

关 键 词：ASPEN PLUS RadFrac 萃取精馏 二异丙醚 异丙醇 

分 类 号：TQ028.3[化学工程]