Abstract Isopropyl alcohol and ethyl acetate can be used to produce degradable and renewable fuel. Since isopropyl alcohol + ethyl acetate can form an azeotropic mixture, it is a tough task to separate the binary mixture by general distillation. In this work, extractive distillation process with N, N-dimethylformamide and dimethyl sulfoxide as entrainers was adopted to separate this azeotrope. The binary and ternary vapor-liquid equilibrium data for (isopropyl alcohol + N, N-dimethylformamide), (ethyl acetate + dimethyl sulfoxide), (isopropyl alcohol + ethyl acetate + N, N-dimethylformamide) and (isopropyl alcohol + ethyl acetate + dimethyl sulfoxide) were determined under 101.3 kPa. Meanwhile, the interaction energies between the molecules were calculated to provide the theoretical insight into the separation of the azeotrope of (EA + IPA) by the entrainers. In addition, the NRTL, UNIQUAC and Wilson models were used to fit the determined binary VLE data. The ternary VLE data for (isopropyl alcohol + ethyl acetate + N, N-dimethylformamide) and (isopropyl alcohol + ethyl acetate + dimethyl sulfoxide) were predicted using the NRTL, UNIQUAC and Wilson models with the parameters regressed from the experimental data.

中文翻译：

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萃取精馏分离异丙醇+乙酸乙酯共沸混合物：汽液平衡测量和相互作用探索

摘要 异丙醇和乙酸乙酯可用于生产可降解和可再生燃料。由于异丙醇+乙酸乙酯可以形成共沸混合物，因此通过一般蒸馏分离二元混合物是一项艰巨的任务。本工作采用以N,N-二甲基甲酰胺和二甲亚砜为夹带剂的萃取精馏工艺分离该共沸物。(异丙醇+N,N-二甲基甲酰胺)、(乙酸乙酯+二甲亚砜)、(异丙醇+乙酸乙酯+N,N-二甲基甲酰胺)和(异丙醇+乙酸乙酯+)的二元和三元气液平衡数据二甲基亚砜）在 101.3 kPa 下测定。同时，计算分子之间的相互作用能以提供对夹带剂分离（EA + IPA）共沸物的理论见解。此外，NRTL、UNIQUAC 和Wilson 模型用于拟合确定的二进制VLE 数据。使用 NRTL、UNIQUAC 和 Wilson 模型预测（异丙醇 + 乙酸乙酯 + N，N-二甲基甲酰胺）和（异丙醇 + 乙酸乙酯 + 二甲基亚砜）的三元 VLE 数据，参数从实验数据中回归。