Phase stability analysis of liquid-liquid equilibrium with stochastic methods

dc.creatorNagatani, G
dc.creatorFerrari, J
dc.creatorCardozo, L
dc.creatorRossi, CCRS
dc.creatorGuirardello, R
dc.creatorOliveira, JV
dc.creatorCorazza, ML
dc.date2008
dc.dateJUL-SEP
dc.date2014-07-30T14:31:27Z
dc.date2015-11-26T16:59:26Z
dc.date2014-07-30T14:31:27Z
dc.date2015-11-26T16:59:26Z
dc.date.accessioned2018-03-28T23:47:05Z
dc.date.available2018-03-28T23:47:05Z
dc.identifierBrazilian Journal Of Chemical Engineering. Brazilian Soc Chemical Eng, v. 25, n. 3, n. 571, n. 583, 2008.
dc.identifier0104-6632
dc.identifierWOS:000258690300015
dc.identifier10.1590/S0104-66322008000300015
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/59451
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/59451
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1278185
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionMinimization of Gibbs free energy Using activity coefficient models and nonlinear equation solution techniques is commonly applied to phase stability problems. However, when conventional techniques, Such as the Newton-Raphson method, are employed, serious convergence problems may arise. Due to the existence Of Multiple solutions, several problem can be found in modeling, liquid-liquid equilibrium of multicomponent systerns, which are highly dependent oil the initial guess. In this Nvork phase stability analysis of liquid-liquid equilibrium is investigated using the NRTL model. For this purpose, two distinct stochastic numerical algorithms are employed to minimize the tangent plane distance of Gibbs free energy: a subdivision algorithm that can find all roots of nonlinear equations for liquid-liquid stability analysis and the Simulated Annealing method. Results obtained in this work for the two stochastic algorithms are compared with those of the Interval Newton method from the literature. Several different binary and multicomponent systerns from the literature were successfully investigated.
dc.description25
dc.description3
dc.description571
dc.description583
dc.descriptionCENPES/PETROBRAS
dc.descriptionFAPERGS
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.languageen
dc.publisherBrazilian Soc Chemical Eng
dc.publisherSao Paulo
dc.publisherBrasil
dc.relationBrazilian Journal Of Chemical Engineering
dc.relationBraz. J. Chem. Eng.
dc.rightsaberto
dc.sourceWeb of Science
dc.subjectphase stability
dc.subjectliquid-liquid equilibrium
dc.subjectstochastic algorithms
dc.subjectthermodynamic models
dc.subjectSimulated Annealing Algorithm
dc.subjectGlobal Optimization
dc.subjectHigh-pressures
dc.subjectPlus Co2
dc.subjectGibbs
dc.subjectSystem
dc.subjectNrtl
dc.subjectPrediction
dc.subjectMixtures
dc.subjectBinary
dc.titlePhase stability analysis of liquid-liquid equilibrium with stochastic methods
dc.typeArtículos de revistas


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