科技广场Issue(4)：8-13,6.
以二甘醇为溶剂连续萃取精馏分离异丙醇-水
Separation of Isopropanol-Water by Continuous Extractive Distillation With Diglycol as Solvent
摘要
Abstract
In this paper,the extractant is diglycol,continuous extractive distillation process for isopropanol-water azeotropic system is simulated and optimized by choosing UNIFAC as the physical property method of calculation us-ing Aspen Plus V7.3. The separation effect and heat duty of the number of theory stages,the mixture feed stage,the solvent feed stage,the reflux ratio and the mole ratio of extractant to mixture (solvent ratio) are investigated by using sensitivity analysis tool. The optimal condition for the extractive distillation is as follows: the number of theory stages is 27,the mixture feed stage is 20st,the solvent feed stage is 3rd,the reflux ratio is 1.8,and the solvent ratio is 1.7. Under the technological condition: The separation effect of isopropanol of extractive distillation is up to 99.94%,and the recovery rate of diglycol is up to 99.995%. The results are useful for the design and operation of continuous ex-tractive distillation process for isopropanol-water azeotropic system.关键词
Aspen Plus/萃取精馏/异丙醇/水/二甘醇Key words
Aspen Plus/Extractive Distillation/Isopropanol/Water/Diglycol分类
化学化工引用本文复制引用
吕帮怀,杨进,罗庆彬,王克良,连明磊,黄禹,叶坤..以二甘醇为溶剂连续萃取精馏分离异丙醇-水[J].科技广场,2016,(4):8-13,6.基金项目
贵州省科技厅联合基金项目（黔科合J字LKLS [2013]28号）；贵州省科技厅联合基金项目（黔科合J字LKLS[2013]27号）；贵州省教育厅重点科研项目（黔教合KY字[2014]282）；贵州省普通高等学校煤系固体废弃物资源化技术创新团队 （）
