Prediction of viscosities and surface tensions of fuels using a new corresponding states model

While some properties of diesels are cheap, easy and fast to measure, such as densities, others such as surface tensions and viscosities are expensive and time consuming. A new approach that uses some basic information such as densities to predict viscosities and surface tensions is here proposed using a Corresponding states model previously developed for the accurate estimation of several thermophysical properties of pure and mixed n-alkanes. This approach is tested with good results in five petroleum distillation cuts from crudes of different sources (North Sea, Africa and Middle East).

[1]  I. Marrucho,et al.  Viscosity and Liquid Density of Asymmetric Hydrocarbon Mixtures , 2003 .

[2]  K. Kobe.  The properties of gases and liquids , 1959 .

[3]  I. Marrucho,et al.  Viscosity and Liquid Density of Asymmetric n-Alkane Mixtures: Measurement and Modeling , 2005 .

[4]  João A. P. Coutinho,et al.  Surface tension of pure heavy n-alkanes: a corresponding states approach , 2001 .

[5]  D. Tassios,et al.  Thermophysical properties of n-Alkanes from C1 to C20 and their prediction for higher ones , 1990 .

[6]  I. Marrucho,et al.  A new Corresponding States model for the estimation of thermophysical properties of long chain n-alkanes , 2003 .

[7]  John J. Marano,et al.  General equation for correlating the thermophysical properties of n-paraffins, n-olefins, and other homologous series : 2. Asymptotic behavior correlations for PVT properties , 1997 .

[8]  Ding-Yu Peng,et al.  A group-contribution correlation for predicting the acentric factors of organic compounds , 1993 .

[9]  I. Marrucho,et al.  Surface Tension of Decane Binary and Ternary Mixtures with Eicosane, Docosane, and Tetracosane , 2005 .

[10]  C. Tsonopoulos.  Critical constants of normal alkanes from methane to polyethylene , 1987 .

[11]  R. Reid,et al.  The Properties of Gases and Liquids , 1977 .

[12]  I. Marrucho,et al.  Surface Tension of Heptane, Decane, Hexadecane, Eicosane, and Some of Their Binary Mixtures , 2002 .

[13]  I. Marrucho,et al.  Measurement and modeling of surface tensions of asymmetric systems: heptane, eicosane, docosane, tetracosane and their mixtures , 2003 .