乙二醇萃取精馏制备无水乙醇的实验研究

doi:10.3969/j.issn.1009-0479.2020.03.018

昆明冶金高等专科学校学报 ›› 2020, Vol. 36 ›› Issue (3): 101-104.DOI: 10.3969/j.issn.1009-0479.2020.03.018

乙二醇萃取精馏制备无水乙醇的实验研究

谭艳霞，李冬丽，李芬锐，程永伟

昆明冶金高等专科学校环境与化工学院，云南昆明６５００３３

收稿日期:2020-03-17 出版日期:2020-09-19 发布日期:2020-09-20
作者简介:谭艳霞（１９８２－），女，湖北孝感人，讲师，工学硕士，主要从事化工生物技术专业教学与研究。
基金资助:
云南省教育厅科学研究项目：污泥复合中药渣制备缓释花肥的试验研究（２０１７ＺＺＸ１６５）。

Study on Anhydrous Ethanol Prepared by Extractive Distillation of Ethylene Glycol Experimental

TAN Yanxia，Ll Dongli，Ll Fenrui，CHENG Yongwei

Faculty of Environment and Chemical Engineering，Kunming Metallurgy College，Kunming 650033，China

Received:2020-03-17 Online:2020-09-19 Published:2020-09-20

摘要/Abstract

摘要： 无水乙醇应用广泛，工业上生产方法有多种，其中萃取精馏制取无水乙醇因具有低能耗、无污染、设备简单、操作方便等优点而被受关注。以乙二醇为萃取剂，利用萃取精馏实验装置探讨优化制备无水乙醇过程条件。实验先考察原料乙醇浓度、回流比、溶剂比等因素对萃取精馏得到的产品纯度的影响规律，再通过正交实
验优化萃取精馏条件，得到最佳的条件为：原料乙醇浓度为９０％（质量分数）、溶剂比为２.６、回流比为３，对应最佳条件塔顶可得到质量分数达９９.６２％的无水乙醇。

关键词: 萃取精馏, 乙二醇, 无水乙醇

Abstract: Anhydrous ethanol is widely used and has many production methods，among which extractive distillation has been paid more and more attention because of its advantages of low energy consumption, no pollution，simple equipment and convenient operation. In this paper，ethylene glycol is used as the extractant，and the process conditions for the preparation of anhydrous ethanol are optimized by using the extractive distillation device.The effects of ethanol concentration，reflux ratio，solvent ratio and other factors on the purity of the product obtained by extractive distillation were explored experimenlally ，and then the conditions of exlractive distillation were optimized by orthogonal experiment，and the best conditions were as follows:the ethanol concentration of the raw material was 90% , the solvent ratio was 2.6，and the reflux ratio was 3.Corresponding to this condition，absolute ethanol with a mass concentration of 99.62% was obtained at the top of the tower.

Key words: extractive distillation, ethylene glycol, anhydrous ethanol

中图分类号:

TQ223.12⁺2

谭艳霞, 李冬丽, 李芬锐, 程永伟. 乙二醇萃取精馏制备无水乙醇的实验研究[J]. 昆明冶金高等专科学校学报, 2020, 36(3): 101-104.

TAN Yanxia, Ll Dongli, Ll Fenrui, CHENG Yongwei. Study on Anhydrous Ethanol Prepared by Extractive Distillation of Ethylene Glycol Experimental[J]. Journal of Kunming Metallurgy College, 2020, 36(3): 101-104.

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乙二醇萃取精馏制备无水乙醇的实验研究

Study on Anhydrous Ethanol Prepared by Extractive Distillation of Ethylene Glycol Experimental

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