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The MHV2 model: Prediction of phase equilibria at sub- and supercritical conditions

✍ Scribed by Søren Dahl; Andrzej Dunalewicz; Aage Fredenslund; Peter Rasmussen

Publisher
Elsevier Science
Year
1992
Tongue
English
Weight
451 KB
Volume
5
Category
Article
ISSN
0896-8446

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✦ Synopsis

MHV2 is a group-contribution equation-of-state based on the modified Huron-Vidal mixing rule. It combines the SRK equation-of-state with a model for the excess Gibbs energy, the modified UNIFAC model. It can be applied at all temperatures and pressures of interest in chemical process design and it is capable of reproducing the low pressure information given by the modified UNIFAC model.

In the present work, we have investigated the ability of the model to predict high pressure vapor-liquid equilibria (VLE), liquid-liquid equilibria (LLE), and three-phase equilibria for systems with mixed solvents together with supercritical gases and lighter alkanes. Considering the complexity of these mixtures, satisfactory results are obtained.

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