Abstract The liquid-liquid equilibria data for the (diisopropyl ether + isopropyl alcohol + ethylene glycol or 1,3-propanediol ternary) system were measured at 303.2 K and 323.2 K under 101.3 kPa. The tie-line data for both systems are displayed in the phase diagram with typical type-I behaviour. The distribution coefficient and separation factor were calculated according to the measured tie-line data. The calculated results suggest that both the two solvents can separate the diisopropyl ether and isopropyl alcohol mixture. Ethylene glycol possesses much better separation efficiency for low concentration extraction. The non-random two liquids (NRTL) and universal quasi-chemical (UNIQUAC) models were applied to obtain the binary interaction parameters of pure components with all the root-mean-square deviation values less than 1.0%, indicating the deviation of regression process can be acceptable. Based on Gibbs stability criteria, the topological analysis with a graphical user interface confirmed the binary interaction parameters from data regression were well consistent with the experimental tie-line data.

中文翻译：

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使用乙二醇从二异丙醚系统中分离异丙醇：相平衡和严格关联

摘要 (二异丙醚+异丙醇+乙二醇或1,3-丙二醇三元)体系的液-液平衡数据分别在303.2 K和323.2 K、101.3 kPa条件下测得。两个系统的联络线数据显示在具有典型 I 型行为的相图中。根据测量的联络线数据计算分配系数和分离因子。计算结果表明，两种溶剂都可以分离二异丙醚和异丙醇混合物。乙二醇对于低浓度萃取具有更好的分离效率。应用非随机二液（NRTL）和通用准化学（UNIQUAC）模型获得均方根偏差值均小于1.0%的纯组分的二元相互作用参数，表明回归过程的偏差是可以接受的。基于吉布斯稳定性标准，具有图形用户界面的拓扑分析证实了来自数据回归的二元交互参数与实验连接线数据非常一致。