Comparison of Empirical Models to Predict Viscosity of Secondary Vacuum Gas Oils

This work presents characterization data and viscosity of 34 secondary vacuum gas oils (H-Oil oils, visbreaker fluid catalytic cracking slurry oils) with aromatic content reaching up to 100 wt.%. Inter-criteria analysis was employed define the VGO characteristic parameters which have an effect on viscosity. Seven published empirical models predict were examined for their prediction ability. The model Aboul-Seud Moharam found lowest error prediction. A modification Aboul-Seoud by separating power terms accounting effects specific gravity average boiling point improves accuracy It discovered that relation slope decrease temperature enhancement oil is not a constant. increases augmentation, fact has been discussed before.