苯甲腈与茚二元体系的等压汽液平衡

摘要

纯茚在化学工业上应用广泛，而提取纯茚最重要的难题是分离杂质苯甲腈，因为苯甲腈的沸点与茚较接近。为了探究苯甲腈与茚的分离方法，用一个循环式汽液平衡装置测量了苯甲腈与茚在22.0、32.0和42.0 kPa下的等压汽液平衡数据。为了验证实验数据的可靠性，应用了面积检验法与微分检验法2种方法来对实验数据进行热力学一致性检验，结果表明实验数据能够通过一致性检验。然后应用了Wilson方程、NRTL方程以及UNIQUAC方程对实验数据进行拟合，得到了这3种模型的二元交互作用参数，结果表明这3种活度系数模型的拟合结果都与实验数据吻合较好。

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	申昌琳
	黄山原
	李晔
	许春建

关键词：苯甲腈；茚；汽液平衡

Abstract：

Pure indene is widely used in chemical industry. The most important problem in extracting pure indene is the separation of benzonitrile, because the boiling point of benzonitrile is close to indene. In order to build a method to separate benzonitrile from indene, in this article, a circulating vapor liquid equilibrium device was used to measure the vapor liquid equilibrium data of the binary system of benzonitrile-indene at 22.0, 32.0 and 42.0 kPa. In order to verify the reliability of the experimental data, area test and van Ness point to point test were applied to check the thermodynamic consistency of the experimental data. The results showed that the experimental data passed the thermodynamic consistency tests. Then Wilson NRTL and UNIQUAC models were used to correlate the experimental data and the binary interaction parameters of these three models were obtained. The finally results of these three models agree well with the experimental data.

Keywords： benzonitrile； indene； vapor-liquid equilibrium

Received 2016-03-21;

Corresponding Authors: 许春建,E-mail:cjxu@tju.edu.cn。 Email: cjxu@tju.edu.cn

About author: 申昌琳(1991-),男,硕士研究生,现从事特殊体系的汽液平衡以及分离研究。

引用本文:

申昌琳, 黄山原, 李晔, 许春建.苯甲腈与茚二元体系的等压汽液平衡[J]. 化学工业与工程, 2017,34(6): 75-80

Shen Changlin, Huang Shanyuan, Li Ye, Xu Chunjian.Isobaric Vapor-Liquid Equilibrium for Binary System of Benzonitrile Plus Indene[J]. Chemcial Industry and Engineering, 2017,34(6): 75-80

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