论文部分内容阅读
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 k Pa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。
Pure indene widely used in the chemical industry, but the most important problem is the separation of pure indene benzene is the separation of impurities, because the boiling point of benzene and nitrile close. In order to explore the separation of benzonitrile from indene, isobaric vapor-liquid equilibrium data of benzonitrile and indene at 22.0, 32.0 and 42.0 k Pa were measured with a recycle vapor-liquid equilibrium apparatus. In order to verify the reliability of the experimental data, two methods of area test and differential test were used to test the thermodynamic consistency of the experimental data. The results show that the experimental data can pass the consistency test. Then the Wilson equation, NRTL equation and UNIQUAC equation were used to fit the experimental data. The binary interaction parameters of the three models were obtained. The results showed that the fitting results of the three activity coefficient models were in good agreement with the experimental data it is good.