加离子液体萃取精馏制取无水乙醇的实验研究  

Preparation of absolute alcohol by extractive distillation with ionic liquid

作　　者：任佳伟[1] 王宝华[2] 冉晓萌[2] 邵露[2] 李洁[2] 王妍[2] 鲁冰[2] 

机构地区：[1]华北电力大学校医院,北京102206 [2]北京中医药大学中药学院,北京100102

出　　处：《现代化工》2013年第8期107-110,共4页Modern Chemical Industry

摘　　要：进行了乙醇-水-1,3-二甲基咪唑二甲酯磷酸盐([MMIM]+[DMP]-)萃取精馏的实验研究,采用乙醇-水的共沸组成进料,最优实验条件为:萃取剂的质量分数为0.30,进料温度为常温15℃,萃取剂加入速度为5 mL/min,离子液体加入20 min后,打开回流比继电器采样,最佳回流比为R=3,塔顶乙醇质量分数为99.5%。The extractive distillation of ethanol-water-[MMIM] ＋ [DMP]-experiment is performed in this study with ethanol-water zoetrope composition as the feed.The optimal experimental conditions are as follows：0.30 of the mass fraction of extractant,15℃ of the feed temperature and 5 mL/min of feed rate.After adding the ionic liquid for 20 minutes,the best reflux ratio R =3 and the mass fraction of ethanol at top tower is 99.5％.

关 键 词：萃取精馏 离子液体 汽液平衡 乙醇-水 

分 类 号：TQ028.4[化学工程]