Behaviour of Tributylamine as Entrainer for the Separation of Water and Acetic Acid with  Reactive Extractive Distillation

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Behaviour of Tributylamine as Entrainer for the Separation of Water and Acetic Acid with
Reactive Extractive Distillation

LEI Zhigang; LI Chengyue; CHEN Biaohua

The Key Laboratory of Science and Technology of Controllable Chemical Reactions, Beijing
University of Chemical Technology, Beijing,100029, China

Received:1900-01-01 Revised:1900-01-01 Online:2003-10-28 Published:2003-10-28
Contact: LEI Zhigang

三正丁胺络合萃取精馏分离醋酸和水

雷志刚; 李成岳; 陈标华

The Key Laboratory of Science and Technology of Controllable Chemical Reactions, Beijing
University of Chemical Technology, Beijing,100029, China

通讯作者: 雷志刚

Abstract

Abstract: A new separation method, reactive extractive distillation, was put forward for separating
water and acetic acid. The separation mechanism was analyzed through infrared spectra
technique. Isobaric vapor-liquid equilibrium (VLE) data at 101.33 kPa for the binary or
ternary systems consisting of water, acetic acid and tributylamine were measured. The
activity coefficients were correlated by using Wilson, NRTL, and UNIQUAC Equations.The VLE
experiment showed that tributylamine could enhance the relative volatility of water to
acetic acid. An extractive distillation experiment was carried out and proved that
tributylamine was a good extractive solvent.

Key words: reactive extractive distillation, vapor-liquid equilibrium, water, acetic acid, tributylarnine

摘要： A new separation method, reactive extractive distillation, was put forward for separating
water and acetic acid. The separation mechanism was analyzed through infrared spectra
technique. Isobaric vapor-liquid equilibrium (VLE) data at 101.33 kPa for the binary or
ternary systems consisting of water, acetic acid and tributylamine were measured. The
activity coefficients were correlated by using Wilson, NRTL, and UNIQUAC Equations.The VLE
experiment showed that tributylamine could enhance the relative volatility of water to
acetic acid. An extractive distillation experiment was carried out and proved that
tributylamine was a good extractive solvent.

关键词: reactive extractive distillation;vapor-liquid equilibrium;water;acetic acid; tributylarnine

LEI Zhigang, LI Chengyue, CHEN Biaohua . Behaviour of Tributylamine as Entrainer for the Separation of Water and Acetic Acid with
Reactive Extractive Distillation[J]. .

雷志刚, 李成岳, 陈标华. 三正丁胺络合萃取精馏分离醋酸和水[J]. CIESC Journal.

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