Phase Equilibrium Calculations in Mixtures Containing Caprolactam with a UNIFAC Model

龚行楚; 吕阳成; 骆广生

doi:10.1016/S1004-9541(08)60354-7

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Phase Equilibrium Calculations in Mixtures Containing Caprolactam with a UNIFAC Model

Updated：2026-01-06

- Phase Equilibrium Calculations in Mixtures Containing Caprolactam with a UNIFAC Model
- Chinese Journal of Chemical Engineering Vol. 18, Issue 2, Pages: 286-291(2010)
- Affiliations：
  
  The State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University,Beijing,China,100084
- Author bio：
- Funds：
- DOI：10.1016/S1004-9541(08)60354-7
  CLC：
- Published：2010
- Accepted：
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GONG Xingchu, LÜ Yangcheng, LUO Guangsheng. Phase Equilibrium Calculations in Mixtures Containing Caprolactam with a UNIFAC Model[J]. , 2010, 18(2): 286-291.
DOI：

GONG Xingchu, LÜ Yangcheng, LUO Guangsheng. Phase Equilibrium Calculations in Mixtures Containing Caprolactam with a UNIFAC Model[J]. , 2010, 18(2): 286-291. DOI： 10.1016/S1004-9541(08)60354-7.

摘要

Abstract

An extended liquid-liquid equilibrium(LLE) UNIFAC model is proposed to describe phase equilibria of mixtures containing caprolactam.In this model

caprolactam is introduced as a new group.New group interaction parameters are calibrated from 156 sets of liquid-liquid equilibrium data.The present model gives satisfactory correlation and prediction in liquid-liquid equilibrium

including quaternary systems containing the mixed solvent of an alcohol and an alkane.The model can be applied to predict caprolactam solubility in water and benzene accurately.Freezing point and vapor-liquid equilibrium of binary systems containing caprolactam are also predicted with the extended LLE UNIFAC model.Satisfactory prediction results are obtained.

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