| UNIFAC模型法计算含己内酰胺体系的相平衡(英文) |
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| 引用本文： | 龚行楚,吕阳成,骆广生.UNIFAC模型法计算含己内酰胺体系的相平衡(英文)[J].中国化学工程学报,2010,18(2):286-291. |
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| 作者姓名： | 龚行楚 吕阳成 骆广生 |
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| 作者单位： | The State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China |
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| 基金项目： | Supported by the National Natural Science Foundation of China(20490200,20525622);the National Basic Research Program of China(2007CB714302) |
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| 摘 要： | 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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| 关 键 词： | caprolactam UNIFAC model liquid-liquid equilibrium solid-liquid equilibrium vapor-liquid equilibrium |
| 收稿时间： | 2009-12-19 |
| 修稿时间： | 2009-12-19
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Phase equilibrium calculations in mixtures containing caprolactam with a UNIFAC model |
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| GONG Xingchu,LÜ,Yangcheng,LUO Guangsheng.Phase equilibrium calculations in mixtures containing caprolactam with a UNIFAC model[J].Chinese Journal of Chemical Engineering,2010,18(2):286-291. |
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| Authors: | GONG Xingchu LÜ Yangcheng LUO Guangsheng |
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| Affiliation: | The State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China |
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| Abstract: | An extended liquid-liquid equilibrium(LLE)UNIFAC modelis 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-Iiquid equilibrium data.The present model gives satisfactory cor-relation 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 accu rately.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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| Keywords: | caprolactam UNIFAC model liquid-liquid equilibrium solid-liquid equilibrium vapor-liquid equilibrium |
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