Vapor−liquid equilibrium (VLE) data for the binary systems of tetrahydrofuran (THF) + ethyl acetate (EtOAc), THF + N-methyl pyrrolidone (NMP) and EtOAc + NMP, and the ternary systems of THF + EtOAc + NMP were measured at 101.3 kPa. The modified Rose vapor recirculating type equilibrium still was utilized to obtain the experimental data. The Herington method, as well as the Van Ness test, was used to verify the thermodynamic consistency of the experimental data. The NRTL model, UNIQUAC model and Wilson model were adopted to correlate the vapor-liquid equilibrium data. Accordingly, the binary interaction parameter for each model was obtained by regressing the experimental data. The results show that the three models can accurately agreement with the experimental data.

测量了四氢呋喃（THF）+乙酸乙酯（EtOAc），THF + N-甲基吡咯烷酮（NMP）和EtOAc + NMP的二元体系的汽液平衡（VLE）数据 以及THF + EtOAc + NMP的三元体系在101.3 kPa。仍然使用改进的玫瑰蒸气再循环型平衡来获得实验数据。Herington方法以及Van Ness检验用于验证实验数据的热力学一致性。采用NRTL模型，UNIQUAC模型和Wilson模型对气液平衡数据进行关联。因此，通过回归实验数据获得每个模型的二元相互作用参数。结果表明，三种模型均能与实验数据准确吻合。