Liquid-liquid equilibria for binary and ternary systems containing glycols, aromatic hydrocarbons, and water: Experimental measurements and modeling with the CPA EoS

Georgios Folas, Georgios Kontogeorgis, Michael Locht Michelsen, Erling Halfdan Stenby, Even Solbraa

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Liquid-liquid equilibrium data of four binary glycol + aromatic hydrocarbon systems and three ternary systems containing water have been measured at atmospheric pressure. The measured systems are monoethylene glycol (MEG) + benzene or toluene, triethylene glycol (TEG) + benzene or toluene, MEG + water + benzene, MEG + water + toluene, and TEG + water + toluene. The binary systems are correlated with the Cubic-Plus-Association (CPA) equation of state while the ternary systems are predicted from interaction parameters obtained from the binary systems. Very satisfactory liquid-liquid equilibrium correlations are obtained for the binary systems using temperature-independent interaction parameters, while adequate predictions are achieved for multicomponent water + glycol + aromatic hydrocarbons systems when accounting for the solvation between the aromatic hydrocarbons and glycols or water.
Original languageEnglish
JournalJournal of Chemical and Engineering Data
Volume51
Issue number3
Pages (from-to)977-983
ISSN0021-9568
DOIs
Publication statusPublished - 2006

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