Abstract The purpose of this study was to measure and model isothermal binary vapour-liquid equilibrium (VLE) data for the water + butane-1,4-diol/butane-2, system to aid in the design of separation processes. P-T-x-y phase equilibrium measurements were determined at three temperatures from approximately 353 to 373 K, utilizing a apparatus. The phase equilibrium data were modelled using the γ – Φ approach with the Non-Random Two-Liquid and UNIQUAC activity coefficient models and the virial equation of state with the Hayden O'Connell correlation for the vapour correction. Thermodynamic consistency testing was performed using the point and area tests for the measured experimental VLE data. The experimental data sets passed both tests where the point and area test employed a tolerance of 0.01 and 10% respectively.

中文翻译：

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353.1–373.2 K 范围内水 + 丁烷-1,4-二醇/丁烷-2,3-二醇系统的等温汽液平衡测量

摘要 本研究的目的是测量和模拟水 + 丁烷-1,4-二醇/丁烷-2 系统的等温二元气液平衡 (VLE) 数据，以帮助设计分离过程。PTxy 相平衡测量是在大约 353 至 373 K 的三个温度下使用仪器确定的。相平衡数据使用 γ – Φ 方法与非随机双液体和 UNIQUAC 活度系数模型以及具有用于蒸汽校正的 Hayden O'Connell 相关性的维里状态方程建模。对测得的实验 VLE 数据使用点和面积测试进行热力学一致性测试。实验数据集通过了两个测试，其中点和面积测试分别采用了 0.01 和 10% 的容差。