Vapor liquid equilibrium modeling of alkane systems with Equations of State: ""simplicity versus complexity""

Voutsas, EC; Pappa, GD; Magoulas, K; Tassios, DP

dc.contributor.author	Voutsas, EC	en
dc.contributor.author	Pappa, GD	en
dc.contributor.author	Magoulas, K	en
dc.contributor.author	Tassios, DP	en
dc.date.accessioned	2014-03-01T01:25:28Z
dc.date.available	2014-03-01T01:25:28Z
dc.date.issued	2006	en
dc.identifier.issn	0378-3812	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/17675
dc.subject	Asymmetric alkane systems	en
dc.subject	Equations of State	en
dc.subject	Multicomponent systems	en
dc.subject	PC-SAFT	en
dc.subject	Peng-Robinson	en
dc.subject	SAFT	en
dc.subject	Vapor liquid equilibria	en
dc.subject.classification	Thermodynamics	en
dc.subject.classification	Chemistry, Physical	en
dc.subject.classification	Engineering, Chemical	en
dc.subject.other	Equations of state	en
dc.subject.other	Ethane	en
dc.subject.other	Mathematical models	en
dc.subject.other	Paraffins	en
dc.subject.other	Statistical methods	en
dc.subject.other	Vapors	en
dc.subject.other	Asymmetric alkane systems	en
dc.subject.other	Multicomponent systems	en
dc.subject.other	PC-SAFT	en
dc.subject.other	Peng-Robinson	en
dc.subject.other	SAFT	en
dc.subject.other	Phase equilibria	en
dc.subject.other	Equations of state	en
dc.subject.other	Ethane	en
dc.subject.other	Mathematical models	en
dc.subject.other	Paraffins	en
dc.subject.other	Phase equilibria	en
dc.subject.other	Statistical methods	en
dc.subject.other	Vapors	en
dc.title	Vapor liquid equilibrium modeling of alkane systems with Equations of State: ""simplicity versus complexity""	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.fluid.2005.12.010	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.fluid.2005.12.010	en
heal.language	English	en
heal.publicationDate	2006	en
heal.abstract	Two types of Equations of State (EoS), which are characterized here as ""simple"" and ""complex"" EoS, are evaluated in this study. The ""simple"" type involves two versions of the Peng-Robinson (PR) EoS: the traditional one that utilizes the experimental critical properties and the acentric factor and the other, referred to as PR-fitted (PR-f), where these parameters are determined by fitting pure compound vapor pressure and saturated liquid volume data. As ""complex"" EoS in this study are characterized the EoS derived from statistical mechanics considerations and involve the Sanchez-Lacombe (SL) EoS and two versions of the Statistical Associating Fluid Theory (SAFT) EoS, the original and the Perturbed-Chain SAFT (PC-SAFT). The evaluation of these two types of EoS is carried out with respect to their performance in the prediction and correlation of vapor liquid equilibria in binary and multicomponent mixtures of methane or ethane with alkanes of various degree of asymmetry. It is concluded that for this kind of systems complexity offers no significant advantages over simplicity. Furthermore, the results obtained with the PR-f EoS, especially those for multicomponent systems that are encountered in practice, even with the use of zero binary interaction parameters, indicate that this EoS may become a powerful tool for reservoir fluid phase equilibria modeling. © 2005 Elsevier B.V. All rights reserved.	en
heal.publisher	ELSEVIER SCIENCE BV	en
heal.journalName	Fluid Phase Equilibria	en
dc.identifier.doi	10.1016/j.fluid.2005.12.010	en
dc.identifier.isi	ISI:000235597400001	en
dc.identifier.volume	240	en
dc.identifier.issue	2	en
dc.identifier.spage	127	en
dc.identifier.epage	139	en