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

Abstract

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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Xu Qintang, Lu Fangping, Li Xi, Luo Ruyi, Jiang Fuming . A Study on Separation of Acetic Acid,Water and Formic Acid System——Refinement of Acetic Acid by Esterification-Azeotropic Distillation[J]. Chem. J. Chinese Universities, 1990, 11(11): 1236.

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

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