| Titre : | Thermodynamic characterization of undefined petroleum fractions using group contribution methods (2013) |
| Auteurs : | Bernardo Carreon-Calderon, Auteur ; Veronica Uribe-Vargas, Auteur ; Edgar Ramirez-Jaramillo, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Industrial & engineering chemistry research (Vol. 51 N° 43, Octobre 2012) |
| Article en page(s) : | pp. 14188–14198 |
| Note générale : | Industrial chemistry |
| Langues : | Anglais |
| Tags : | Thermodynamic |
| Résumé : | Properties of petroleum fractions of unknown composition, the so-called undefined petroleum fractions, are estimated using an approach based on group contribution methods. Using liquid density and molecular weight as experimental data and classical thermodynamics as framework, functional groups were assigned to each undefined fraction by minimizing its free energy. Thus, methods requiring molecular structures were used directly in phase equilibrium simulations of petroleum fluids. The proposed procedure also allows the critical properties of such undefined fractions to be calculated employing no specific correlations. The obtained results show reasonable accuracy concerning phase equilibrium experiments. |
| ISSN : | 0888-5885 |
| En ligne : | http://pubs.acs.org/doi/abs/10.1021/ie3016076 |
