CIESC Journal

• SEPARATION SCIENCE & ENGINEERING •    下一篇

苯或甲苯萃取己内酰胺和甲基己内酰胺分配系数的测定和预测

龚行楚; 吕阳成; 骆广生   

  1. State Key Lab of Chemical Engineering, Department of Chemical Engineering, Tsinghua
    University, Beijing 100084, China
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2007-08-28 发布日期:2007-08-28
  • 通讯作者: 龚行楚

Distribution coefficient of caprolactam and methyl caprolactam using benzene or toluene as
extractants: Experiments and prediction

GONG Xingchu; LÜ Yangcheng; LUO Guangsheng   

  1. State Key Lab of Chemical Engineering, Department of Chemical Engineering, Tsinghua
    University, Beijing 100084, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2007-08-28 Published:2007-08-28
  • Contact: GONG Xingchu

摘要: To get high purity caprolactam is a challenging task in the chemical fiber industry. To
date, reports on the prediction of the distribution of caprolactam and its derivative
chemicals have been few. In this study, the extraction of caprolactam with toluene as the
extractant and N-methyl caprolactam with benzene and toluene as the extractants has been
carried out. By defining new UNIFAC groups and calibrating related interaction parameters,
a UNIFAC method was introduced to predict the equilibrium concentration of caprolactam and
methyl caprolactam in toluene or benzene extraction processes. The calculated results fit
very well with the experimental data. Using the UNIFAC model, the selectivity of
extractants can be predicted.

关键词: extraction;UNIFAC model;caprolactam;benzene;toluene

Abstract: To get high purity caprolactam is a challenging task in the chemical fiber industry. To
date, reports on the prediction of the distribution of caprolactam and its derivative
chemicals have been few. In this study, the extraction of caprolactam with toluene as the
extractant and N-methyl caprolactam with benzene and toluene as the extractants has been
carried out. By defining new UNIFAC groups and calibrating related interaction parameters,
a UNIFAC method was introduced to predict the equilibrium concentration of caprolactam and
methyl caprolactam in toluene or benzene extraction processes. The calculated results fit
very well with the experimental data. Using the UNIFAC model, the selectivity of
extractants can be predicted.

Key words: extraction, UNIFAC model, caprolactam, benzene, toluene