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Prediction of density and viscosity of bitumen using the Peng−Robinson equation of state / Herbert Loria in Industrial & engineering chemistry research, Vol. 48 N° 22 (Novembre 2009) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 48 N° 22 (Novembre 2009) . - pp. 10129–10135 Titre : Prediction of density and viscosity of bitumen using the Peng−Robinson equation of state Type de document : texte imprimé Auteurs : Herbert Loria, Auteur ; Pedro Pereira-Almao, Auteur ; Marco Satyro, Auteur Année de publication : 2010 Article en page(s) : pp. 10129–10135 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Bitumen  Thermodynamic  models  Peng−Robinson  equation Résumé : Density and viscosity are important quantities required in engineering design for production, fluid transportation, and processing. However, there is no satisfactory theory for the calculation of these properties for bitumen. The principal objective of this paper is to obtain thermodynamic models to predict the density and viscosity of bitumen on the basis of the translated version of the Peng−Robinson equation of state. In the density calculation, a consistent correction to improve the liquid-phase volume estimation was applied. The density model evidenced a small percent average absolute error regarding experimental data (less than 1%). The model for viscosity was based on a modification of the Enskog’s equation. This modification allowed the prediction of bitumen viscosity using an equation of state along with a substance- and temperature-dependent parameter; this approach showed good accuracy with respect to experimental data. An important advantage of these models is the possibility of estimating viscosities at different pressures. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie901031n [article] Prediction of density and viscosity of bitumen using the Peng−Robinson equation of state [texte imprimé] / Herbert Loria, Auteur ; Pedro Pereira-Almao, Auteur ; Marco Satyro, Auteur . - 2010 . - pp. 10129–10135. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N° 22 (Novembre 2009) . - pp. 10129–10135 Mots-clés : Bitumen  Thermodynamic  models  Peng−Robinson  equation Résumé : Density and viscosity are important quantities required in engineering design for production, fluid transportation, and processing. However, there is no satisfactory theory for the calculation of these properties for bitumen. The principal objective of this paper is to obtain thermodynamic models to predict the density and viscosity of bitumen on the basis of the translated version of the Peng−Robinson equation of state. In the density calculation, a consistent correction to improve the liquid-phase volume estimation was applied. The density model evidenced a small percent average absolute error regarding experimental data (less than 1%). The model for viscosity was based on a modification of the Enskog’s equation. This modification allowed the prediction of bitumen viscosity using an equation of state along with a substance- and temperature-dependent parameter; this approach showed good accuracy with respect to experimental data. An important advantage of these models is the possibility of estimating viscosities at different pressures. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie901031n