高等学校化学学报 ›› 1990, Vol. 11 ›› Issue (11): 1236.

• 研究论文 • 上一篇    下一篇

乙酸-水-甲酸体系的分离研究——酯化-共沸蒸馏精制醋酸

徐琴堂, 鲁方平, 李熙, 罗儒仪, 蒋富明   

  1. 吉林大学化学, 130023
  • 收稿日期:1989-01-09 出版日期:1990-11-24 发布日期:1990-11-24
  • 通讯作者: 徐琴堂

A Study on Separation of Acetic Acid,Water and Formic Acid System——Refinement of Acetic Acid by Esterification-Azeotropic Distillation

Xu Qintang, Lu Fangping, Li Xi, Luo Ruyi, Jiang Fuming   

  1. Department of Chemistry, Jilin University, Changchun, 130023
  • Received:1989-01-09 Online:1990-11-24 Published:1990-11-24

摘要: 以乙酸-水-甲酸三元体系为研究对象,适当选择甲酸的酯化剂,进行该体系的分离实验。结果表明,用酯化-共沸蒸馏可除去乙酸、水和甲酸混合液中的水和甲酸,从而达到精制醋酸的目的。

关键词: 乙酸-水-甲酸体系, 酯化, 分离, 共沸蒸馏

Abstract: Separation for the acetic acid-water-formic acid system in a continuous distillation column was studied. The suitable esterification reagents for the dehydration of acetic acid and for removing formic acid from the system are saturated aliphatic alcohols containing 3~6 carbon atoms. The experimental results obtained indicate that the acetic acid with a higher purity (>98.5%) can be obtained by esterification-azeotropic distillation for the given system.

Key words: Acetic acid-water-formic acid system, Esterification, Separation, Azeotropic distillation

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