Performance of cubic EoS at high pressures

Stamataki, S; Tassios, D

dc.contributor.author	Stamataki, S	en
dc.contributor.author	Tassios, D	en
dc.date.accessioned	2014-03-01T01:14:00Z
dc.date.available	2014-03-01T01:14:00Z
dc.date.issued	1998	en
dc.identifier.issn	0020-2274	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/12832
dc.subject	High Pressure	en
dc.subject.classification	Energy & Fuels	en
dc.subject.classification	Engineering, Chemical	en
dc.subject.classification	Engineering, Petroleum	en
dc.subject.other	T-MPR EQUATION	en
dc.subject.other	PHASE-EQUILIBRIA	en
dc.subject.other	MIXING RULES	en
dc.subject.other	METHANE	en
dc.subject.other	HYDROCARBON	en
dc.subject.other	PREDICTION	en
dc.subject.other	MIXTURES	en
dc.subject.other	STATE	en
dc.title	Performance of cubic EoS at high pressures	en
heal.type	journalArticle	en
heal.identifier.primary	10.2516/ogst:1998032	en
heal.identifier.secondary	http://dx.doi.org/10.2516/ogst:1998032	en
heal.language	English	en
heal.publicationDate	1998	en
heal.abstract	This paper presents an evaluation of the performance of cubic equations of state in the prediction of the phase behavior of hyperbaric mixtures. It points out a number of problems that should be resolved in a cooperative way. Items related to EoS parameter definitions such as interaction coefficients, critical properties of hydrocarbon compounds and volume translation are investigated. VLE experimental data, isothermal flash compositional and volumetric data up to 4000 bar as well as PVT data up to 2000 bar for binary mixtures and synthetic multicomponent systems have been considered in this study. Correlation and prediction results are presented with the translated and modified Peng-Robinson (t-mPR) EoS. It is shown that serious problems are encountered at high pressure, when extrapolated interaction coefficients are used. Prediction of saturation pressures of gas condensates is more satisfactory when binary interaction parameters are obtained from high pressure dew point correlations. Compositional and volumetric predictions are remarkable under the assumption that definition of the EoS parameters is based on high pressure VLE binary data. Contradictory results are obtained with different methods for estimating the critical properties of high molecular weight hydrocarbons. Generalized expressions for the volume translation appear to be very efficient even at very high temperatures and pressures (up to 2000 bar).	en
heal.publisher	EDITIONS TECHNIP	en
heal.journalName	REVUE DE L INSTITUT FRANCAIS DU PETROLE	en
dc.identifier.doi	10.2516/ogst:1998032	en
dc.identifier.isi	ISI:000074728600011	en
dc.identifier.volume	53	en
dc.identifier.issue	3	en
dc.identifier.spage	367	en
dc.identifier.epage	377	en