[DMIM]DMP萃取精馏分离丙酮和甲醇共沸体系的研究  

Extractive distillation of acetone and methanol azeotrope using [DMIM]DMP as solvent

作　　者：李静[1] 王克良[1] 吴红[1] 连明磊[1] 李志[1] 陈定梅[1] 叶昆 

机构地区：[1]六盘水师范学院化学与化学工程系,贵州六盘水553004 [2]中国石油集团工程设计有限责任公司华北分公司,河北任丘062552

出　　处：《天然气化工—C1化学与化工》2017年第4期46-50,61,共6页Natural Gas Chemical Industry

基　　金：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);贵州省教育厅教学内容与课程体系改革项目(GZSJG10977201604);贵州省教育厅重点科研项目(黔教合KY字[2014]282);贵州省教育厅特色重点实验室项目([2011]278);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(No:黔教合人才团队字[2014]46号);贵州省煤炭资源清洁高效利用科研实验平台(黔科平台[2011]4003)

摘　　要：采用Aspen Plus软件,对以离子液体1,3-二甲基咪唑磷酸二甲酯盐([DMIM]DMP)为溶剂萃取精馏分离丙酮和甲醇共沸体系进行了模拟。通过优化溶剂比、全塔理论塔板数、原料进料位置、溶剂进料位置和回流比等工艺参数,产品丙酮的质量分数大于99.99%。溶剂再生塔采用减压精馏分离甲醇和溶剂,最终得到的甲醇和[DMIM]DMP的质量分数高达99.94%和99.99%。说明以[DMIM]DMP为溶剂萃取分离丙酮和甲醇共沸物具有很好的效果。Aspen Plus software was used to simulate the extractive distillation process for separation of acetone and methanol azeotrope using the ionic liquid 1,3-dimethylimidazolium dimethylphosphate （[DMIM]DMP） as solvent. The process parameters, including solvent ratio, theoretical plate number, feed position, reflux ratio, etc., were optimized to obtain a product acetone with the purity of above 99.99% by mass. Solvent regeneration section used the vacuum distillation column to separate methanol and solvent. The purities of finally separated methanol and [DMIM]DMP were of 99.94% and 99.99% by mass, respectively. The results show that [DMIM]DMP as solvent has a good effect on the extractive distillation of acetone and methanol azeotrope.

关 键 词：1 3-二甲基咪唑磷酸二甲酯盐 离子液体 ASPEN PLUS 萃取精馏 丙酮 甲醇 

分 类 号：TQ028[化学工程]