Correlation and prediction of phase equilibria and volumetric behaviour of hyperbaric binary fluids

Stamataki, SK; Magoulas, KG; Boukouvalas, CJ; Tassios, DP

dc.contributor.author	Stamataki, SK	en
dc.contributor.author	Magoulas, KG	en
dc.contributor.author	Boukouvalas, CJ	en
dc.contributor.author	Tassios, DP	en
dc.date.accessioned	2014-03-01T01:13:39Z
dc.date.available	2014-03-01T01:13:39Z
dc.date.issued	1998	en
dc.identifier.issn	0020-2274	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/12631
dc.subject	Phase Equilibria	en
dc.subject.classification	Energy & Fuels	en
dc.subject.classification	Engineering, Chemical	en
dc.subject.classification	Engineering, Petroleum	en
dc.subject.other	Correlation methods	en
dc.subject.other	Equations of state of liquids	en
dc.subject.other	High pressure effects	en
dc.subject.other	Mathematical models	en
dc.subject.other	Phase equilibria	en
dc.subject.other	Hyperbaric conditions	en
dc.subject.other	Vapor liquid equilibria	en
dc.subject.other	Binary mixtures	en
dc.title	Correlation and prediction of phase equilibria and volumetric behaviour of hyperbaric binary fluids	en
heal.type	journalArticle	en
heal.identifier.primary	10.2516/ogst:1998009	en
heal.identifier.secondary	http://dx.doi.org/10.2516/ogst:1998009	en
heal.language	English	en
heal.publicationDate	1998	en
heal.abstract	The capabilities of cubic Equations of State (EoS) in the correlation and the prediction of phase equilibria at hyperbaric conditions is examined. PVT data of pure compounds as well as VLE and volumetric data of binary mixtures up to 2000 bar are used. Correlation and prediction results are presented with the translated and modified Peng-Robinson (t-mPR) EoS and EoS/G(E) models. The performance of cubic EoS with a single interaction parameter (k(ij)) in describing VLE is remarkable considering the level of pressures involved. The same is valid for the PVT results including the relative liquid volumes of the C-1/nC(24) system. With typical errors of about 10% deviations in pressure of 100-200 bar are, of course, encountered which can be eliminated by the use of second interaction coefficient in the covolume combining rule. Predicted k(ij) values obtained from generalized correlations developed from low pressure VLE data provide reasonable results for systems with hydrocarbons up to nC(16) even at high pressures, but fail for higher asymmetric ones. Volume translation is essential for PVT predictions. The temperature independent translation of t-mPR and that of Jhaveri and Yeugren give very satisfactory results. LCVM provides the best results of the EoS/G(E) models studied and gives very good predictions for rather symmetric systems which become poorer with asymmetric ones at very high pressures.	en
heal.publisher	EDITIONS TECHNIP	en
heal.journalName	Revue de l'Institute Francais du Petrole	en
dc.identifier.doi	10.2516/ogst:1998009	en
dc.identifier.isi	ISI:000072876400009	en
dc.identifier.volume	53	en
dc.identifier.issue	1	en
dc.identifier.spage	59	en
dc.identifier.epage	68	en