Prediction/correlation of vapor-liquid equilibria in synthetic gas and oil systems

Anastasiades, K; Stamataki, S; Tassios, D

dc.contributor.author	Anastasiades, K	en
dc.contributor.author	Stamataki, S	en
dc.contributor.author	Tassios, D	en
dc.date.accessioned	2014-03-01T01:10:09Z
dc.date.available	2014-03-01T01:10:09Z
dc.date.issued	1994	en
dc.identifier.issn	0378-3812	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/11324
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0028372425&partnerID=40&md5=5fafef520fef348c6a1e0e52a05b5283	en
dc.subject	theory application vapor-liquid equilibria mixtures hydrocarbons.	en
dc.subject.classification	Thermodynamics	en
dc.subject.classification	Chemistry, Physical	en
dc.subject.classification	Engineering, Chemical	en
dc.subject.other	Correlation methods	en
dc.subject.other	Equations of state	en
dc.subject.other	Gas condensates	en
dc.subject.other	Hydrocarbons	en
dc.subject.other	Liquids	en
dc.subject.other	Mathematical models	en
dc.subject.other	Mixtures	en
dc.subject.other	Thermodynamics	en
dc.subject.other	Vapor pressure	en
dc.subject.other	Vapors	en
dc.subject.other	Cubic equations of state	en
dc.subject.other	Jhaveri Peng Robinson equation of state	en
dc.subject.other	Modified Peng Robinson equation of state	en
dc.subject.other	Phase equilibria	en
dc.subject.other	Gas/Liquid Mixtures	en
dc.subject.other	Oil Hydraulics	en
dc.subject.other	Prediction	en
dc.subject.other	Two-Phase Flow(Gas/Liquid	en
dc.title	Prediction/correlation of vapor-liquid equilibria in synthetic gas and oil systems	en
heal.type	journalArticle	en
heal.language	English	en
heal.publicationDate	1994	en
heal.abstract	Anastasiades, K., Stamataki, S. and Tassios, D., 1994 Prediction/correlation of vapor-liquid equilibria in synthetic gas and oil systems. Fluid Phase Equilibria 93: 23-54. The performance of two cubic equations of state (EoS) - a translated version of a modified Peng-Robinson and the Jhaveri-Peng-Robinson - in the prediction/correlation of the phase behavior of gas and oil mixtures is presented. Problems associated with the uncertainty involved in the description of the heavy end of the mixtures are avoided by considering synthetic systems. Prediction results are fair for the gas condensate systems and become very poor when approaching near-critical conditions. The results are better for the oils but deviations are observed with increasing volatility. A systematic evaluation of the improvements obtained by tuning the thermodynamic model to match the saturation pressure alone or together with constant composition expansion data is carried out to determine the number and type of the EoS parameters that need to be tuned. For far-critical gas condensates and for oil mixtures the adjustment of one parameter is adequate to yield satisfactory results. This is not the case for near-critical gas condensates where adjustment of two parameters is necessary. The overall quality of the results obtained by prediction or tuning justifies the wide use of the aforementioned EoS - and probably other cubic EoS - in the petroleum industry. © 1994.	en
heal.publisher	ELSEVIER SCIENCE BV	en
heal.journalName	Fluid Phase Equilibria	en
dc.identifier.isi	ISI:A1994ND40600002	en
dc.identifier.volume	93	en
dc.identifier.issue	C	en
dc.identifier.spage	23	en
dc.identifier.epage	54	en