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首页> 外文期刊>Chemical Engineering Research & Design: Transactions of the Institution of Chemical Engineers >Vapor-liquid equilibria for ethyl acetate plus methanol and ethyl acetate plus ethanol mixtures: Experimental verification and prediction
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Vapor-liquid equilibria for ethyl acetate plus methanol and ethyl acetate plus ethanol mixtures: Experimental verification and prediction

机译：对乙酸乙酯+气液平衡甲醇和乙酸乙酯+乙醇混合物:实验验证和预测

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摘要

This work aims of the determination of a series of vapor-liquid equilibrium (VLE) experimental data at low pressure (70 kPa) for binary mixtures of ethyl acetate with methanol and ethanol. The Fischer's ebulliometer was used for the measurements of VLE data. A complete series of equilibrium data was obtained such as pressure, temperature and compositions of the liquid and vapor phases (PTxy). The two VLE data sets were submitted to a thermodynamic consistence test, where the deviations were evaluated in all variables, using the UNIQUAC activity coefficient equation. The magnitude of the average deviations was within the experimental uncertainty satisfying the Gibbs-Duhen equation. The data sets were also used to test the prediction of the UNIFAC model in its original and modified editions and the results were also within experimental uncertainties. Then a series of binary systems containing alcohols (methanol and ethanol) and esters (methyl and ethyl acetate) were collected from the literature for testing systematically the capability of the UNIFAC contribution method for this type of mixtures. (C) 2014 The Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
机译：这项工作的目的的一系列的决心气液平衡(1)实验数据在低压力(70 kPa)的二元混合物乙酸乙酯与甲醇和乙醇。费舍尔的沸点计是用于1数据的测量。平衡压力等数据获得液体的温度和成分蒸气阶段(PTxy)。提交一个热力学一致性测试,在所有的偏差进行评估变量,用UNIQUAC、活度系数方程。在实验的不确定性满足Gibbs-Duhen方程。集的预测也被进行了测试UNIFAC模型在其原始和修改版本,结果也在实验的不确定性。含醇(甲醇和二元系统乙醇)和酯(甲基和乙酸乙酯)收集文献的测试UNIFAC系统的能力这种混合方法的贡献。(C) 2014年化学工程师的机构。爱思唯尔出版的帐面价值保留所有权利。

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