Recent applications of the cubic-plus-association (CPA) equation of state to industrially important systems

Georgios Folas, Samer Derawi, Michael Locht Michelsen, Erling Halfdan Stenby, Georgios Kontogeorgis

Research output: Contribution to journalConference articleResearchpeer-review

Abstract

The cubic-plus-association equation of state (CPA EoS) has been extended to phase equilibria of industrially important binary mixtures of alcohol-hydrocarbon, alcohol/glycol-water systems and mixtures with organic acids. The ability of the model to predict different types of equilibria was tested. Very satisfactory VLE and SLE prediction is achieved for alcohol-hydrocarbon systems, while the sensitivity of the LLE to the interaction parameter is demonstrated. It has been shown that CPA can perform VLE/LLE/SLE calculations in the case of alcohol-hydrocarbon binary systems with a single interaction parameter. Satisfactory SLE correlation of alcohol/glycol-water systems is achieved using a single interaction parameter over an extended temperature range. Moreover, satisfactory prediction was achieved for the multiphase equilibria of the mixture acetic acid-water-hexane based solely on binary interaction parameters. (c) 2004 Elsevier B.V. All rights reserved.
Original languageEnglish
JournalFluid Phase Equilibria
Volume225
Issue numberSpecial Issue
Pages (from-to)121-126
ISSN0378-3812
DOIs
Publication statusPublished - 2005
Event10th International Conference on Propertiies and Phase Equilibria for Product and Process Design - Snowbird, UT, United States
Duration: 16 May 200421 May 2004
Conference number: 10

Conference

Conference10th International Conference on Propertiies and Phase Equilibria for Product and Process Design
Number10
CountryUnited States
City Snowbird, UT
Period16/05/200421/05/2004

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