Prediction of Vapor-Liquid Equilibrium from Ternary Liquid-Liquid Equilibrium Data

Document Type

Article

Publication Date

1-1-1983

Abstract

Reasonable estimates of ternary vapor-liquid equilibrium can be obtained by using the corresponding liquid-liquid equilibrium (LLE) data with the NRTL, LEMF, and UNIQUAC models. The overall average absolute deviation in vapor-phase concentrations for seven such systems is 0.028, but better predictions are realized along the important, for three-phase distillation calculations, binodai curve. Use of the UNIFAC method gives erratic predictions suggesting caution when applied to such systems. Combination, however, of the LLE data and the UNIFAC method gives the best results with a deviation of 0.020. Prediction of binary VLE behavior from LLE data also yields reasonably good results. © 1983, American Chemical Society. All rights reserved.

Identifier

0020597451 (Scopus)

Publication Title

Industrial and Engineering Chemistry Process Design and Development

External Full Text Location

https://doi.org/10.1021/i200020a020

ISSN

01964305

First Page

123

Last Page

129

Issue

1

Volume

22

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