VLE measurements using a static cell vapor phase manual sampling method accompanied with an empirical data consistency test

被引:3
作者
Freitag, Joerg [1 ]
Kosuge, Hitoshi [1 ]
Schmelzer, Juergen P. [2 ]
Kato, Satoru [3 ,4 ]
机构
[1] Nippon Refine Co Ltd, Technol Dev Ctr, Ichihara, Chiba 2900067, Japan
[2] Univ Appl Sci, Dept Chem Engn, D-01069 Dresden, Germany
[3] Tokyo Metropolitan Univ, Dept Appl Chem, Hachioji 1920397, Japan
[4] TC Lines Co Ltd, Tokyo, Tokyo 1560043, Japan
关键词
(Vapor plus liquid) equilibria; Measurement; Static cell; Vapor-phase manual sampling; Data consistency test; LIQUID-EQUILIBRIA; GAS-CHROMATOGRAPHY; PREDICTION; PRESSURES; MIXTURES;
D O I
10.1016/j.jct.2014.08.024
中图分类号
O414.1 [热力学];
学科分类号
摘要
A new static cell vapor phase manual sampling (SCVMS1) method is used for the simple measurement of constant temperature x, y (vapor + liquid) equilibria (VLE). The method was applied to the VLE measurements of the (methanol + water) binary at T/K = (283.2, 298.2, 308.2 and 322.9), asymmetric (acetone + 1-butanol) binary at T/K = (283.2, 295.2, 308.2 and 324.2) and two-liquid phase forming azeotropic (water + 1-butanol) binary at T/K = (283.2 and 298.2). The accuracy of the experimental data was approved by a data consistency test, that is, an empirical plot of the polarity exclusion factor, beta, vs. the system pressure, P. The SCVMS data are accurate, because the VLE data converge to the same ln beta vs. lnP straight line determined from conventional distillation-still method and a headspace gas chromatography method. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码:92 / 101
页数:10
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