Prediction of vapor-liquid equilibria at low and high pressures using UNIFAC-based models

Voutsas, EC; Spiliotis, N; Kalospiros, NS; Tassios, D

dc.contributor.author	Voutsas, EC	en
dc.contributor.author	Spiliotis, N	en
dc.contributor.author	Kalospiros, NS	en
dc.contributor.author	Tassios, D	en
dc.date.accessioned	2014-03-01T01:11:25Z
dc.date.available	2014-03-01T01:11:25Z
dc.date.issued	1995	en
dc.identifier.issn	0888-5885	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/11632
dc.subject	High Pressure	en
dc.subject	Vapor Liquid Equilibria	en
dc.subject.classification	Engineering, Chemical	en
dc.subject.other	Equations of state	en
dc.subject.other	Forecasting	en
dc.subject.other	Gases	en
dc.subject.other	Hydrocarbons	en
dc.subject.other	Mathematical models	en
dc.subject.other	Mixtures	en
dc.subject.other	Olefins	en
dc.subject.other	Performance	en
dc.subject.other	Infinite dilution activity coefficient	en
dc.subject.other	Supercritical gases	en
dc.subject.other	Vapor liquid equilibria	en
dc.subject.other	Wong-Sandler model	en
dc.subject.other	Phase equilibria	en
dc.title	Prediction of vapor-liquid equilibria at low and high pressures using UNIFAC-based models	en
heal.type	journalArticle	en
heal.identifier.primary	10.1021/ie00041a030	en
heal.identifier.secondary	http://dx.doi.org/10.1021/ie00041a030	en
heal.language	English	en
heal.publicationDate	1995	en
heal.abstract	Four recently developed models involving equations of state combined with the UNIFAC GE expression: MHV2, PSRK, LCVM, and the Wong-Sandler models are compared with respect to their performance in the prediction of vapor-liquid equilibria (VLE). The following cases are considered: (a) polar mixtures with components of similar size at low and high pressures; (b) asymmetric systems containing supercritical gases and n-alkanes; (c) infinite dilution activity coefficients in asymmetric hydrocarbon mixtures. All models perform satisfactorily in the VLE prediction of symmetric systems (case a), but only the LCVM model for asymmetric ones (cases b and c). The conventional γ-φ approach has also been included in the comparison when applicable; i.e., low-pressure VLE. © 1995 American Chemical Society.	en
heal.publisher	AMER CHEMICAL SOC	en
heal.journalName	Industrial and Engineering Chemistry Research	en
dc.identifier.doi	10.1021/ie00041a030	en
dc.identifier.isi	ISI:A1995QF74800030	en
dc.identifier.volume	34	en
dc.identifier.issue	2	en
dc.identifier.spage	681	en
dc.identifier.epage	687	en