Documents disponibles écrits par cet auteur

Calculation of critical points in gas − condensate mixtures under the influence of magnetic fields / Wilson A. Canas-Marín in Industrial & engineering chemistry research, Vol. 49 N° 16 (Août 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 16 (Août 2010) . - pp. 7610–7619 Titre : Calculation of critical points in gas − condensate mixtures under the influence of magnetic fields Type de document : texte imprimé Auteurs : Wilson A. Canas-Marín, Auteur Année de publication : 2010 Article en page(s) : pp. 7610–7619 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Gas  Magnetic  fields Résumé : The mathematical conditions representing the gas−liquid critical points of multicomponent mixtures are used to compute the gas−liquid critical points of diamagnetic gas−condensate fluids of interest to the oil industry, where the effect of a static magnetic field on calculated critical points is studied for the first time. Magneto-chemical fugacity derivatives, required to fulfill the quadratic and cubic forms of the Helmholtz free energy at the critical points, have been obtained from a recently developed theory of phase equilibria in diamagnetic multicomponent fluids and numerical differentiation (Canas-Marin, W. A.; Ortiz-Arango, J. D.; Guerrero-Aconcha, U. E.; Lira-Galeana, C. AIChE J. 2006, 52 (8), 2887−2897). Results in diamagnetic synthetic gas−condensate mixtures show that a magnetic field can increase or decrease the critical points depending on mixture composition and the extent of the applied magnetic field. For mixtures rich in heavy diamagnetic substances (i.e., hydrocarbon oils), the critical points have an initial tendency to decrease up to a certain value of the field and then to increase with the applied magnetic field. If high amounts of light diamagnetic components are present (i.e., gases), the critical properties always increase with the applied field. The effect of the applied magnetic field on the stability limit of these mixtures is also studied in detail. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900939y [article] Calculation of critical points in gas − condensate mixtures under the influence of magnetic fields [texte imprimé] / Wilson A. Canas-Marín, Auteur . - 2010 . - pp. 7610–7619. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 16 (Août 2010) . - pp. 7610–7619 Mots-clés : Gas  Magnetic  fields Résumé : The mathematical conditions representing the gas−liquid critical points of multicomponent mixtures are used to compute the gas−liquid critical points of diamagnetic gas−condensate fluids of interest to the oil industry, where the effect of a static magnetic field on calculated critical points is studied for the first time. Magneto-chemical fugacity derivatives, required to fulfill the quadratic and cubic forms of the Helmholtz free energy at the critical points, have been obtained from a recently developed theory of phase equilibria in diamagnetic multicomponent fluids and numerical differentiation (Canas-Marin, W. A.; Ortiz-Arango, J. D.; Guerrero-Aconcha, U. E.; Lira-Galeana, C. AIChE J. 2006, 52 (8), 2887−2897). Results in diamagnetic synthetic gas−condensate mixtures show that a magnetic field can increase or decrease the critical points depending on mixture composition and the extent of the applied magnetic field. For mixtures rich in heavy diamagnetic substances (i.e., hydrocarbon oils), the critical points have an initial tendency to decrease up to a certain value of the field and then to increase with the applied magnetic field. If high amounts of light diamagnetic components are present (i.e., gases), the critical properties always increase with the applied field. The effect of the applied magnetic field on the stability limit of these mixtures is also studied in detail. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900939y

Thermodynamics of nonferroelectric mixtures under the influence of electrostatic fields / Wilson A. Canas-Marín in Industrial & engineering chemistry research, Vol. 51 N° 21 (Mai 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 21 (Mai 2012) . - pp. 7410-7417 Titre : Thermodynamics of nonferroelectric mixtures under the influence of electrostatic fields Type de document : texte imprimé Auteurs : Wilson A. Canas-Marín, Auteur Année de publication : 2012 Article en page(s) : pp. 7410-7417 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Thermodynamic  Nonferroelectric  Electrostatic Résumé : A thermodynamic framework for modeling the phase equilibrium of nonferroelectric pure components and multicomponent liquid, vapor, or solid mixtures under the influence of an electrostatic field is presented. Then, this framework is used for the first time to predict the effect of this kind of field on the critical temperature and critical pressure of a multicomponent hydrocarbon mixture, giving as a result that the critical properties exhibit a downward shift with the strength of the electrostatic field applied and then a final upward shift for very huge values of the field. For these calculations an alternative mathematical expression to determine the electric susceptibilities of mixtures, and its respective compositional derivatives, is also presented; its predictive capability is illustrated by using experimental data of binary systems. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie3002149 [article] Thermodynamics of nonferroelectric mixtures under the influence of electrostatic fields [texte imprimé] / Wilson A. Canas-Marín, Auteur . - 2012 . - pp. 7410-7417. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 21 (Mai 2012) . - pp. 7410-7417 Mots-clés : Thermodynamic  Nonferroelectric  Electrostatic Résumé : A thermodynamic framework for modeling the phase equilibrium of nonferroelectric pure components and multicomponent liquid, vapor, or solid mixtures under the influence of an electrostatic field is presented. Then, this framework is used for the first time to predict the effect of this kind of field on the critical temperature and critical pressure of a multicomponent hydrocarbon mixture, giving as a result that the critical properties exhibit a downward shift with the strength of the electrostatic field applied and then a final upward shift for very huge values of the field. For these calculations an alternative mathematical expression to determine the electric susceptibilities of mixtures, and its respective compositional derivatives, is also presented; its predictive capability is illustrated by using experimental data of binary systems. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie3002149