No abstract

The article discusses the chemical composition and physicochemical properties of heavy naphthenic-aromatic oil and its fractions.In comparison with mixtures of West Siberian and Samara oils, heavy oil of a naphthenic-aromatic base is characterized by a higher viscosity and density, which is associated with a high content of resins and asphaltenes compounds and the absence of gasoline fractions. The diesel fraction has good low-temperature characteristics and contains a large amount of aromatic hydrocarbons, represented mainly by monocyclic structures. Oil fractions also have good low-temperature characteristics, but are characterizedby a low viscosity index, which is due to the high content of polycyclic naphthenic hydrocarbons with short alkyl chains. The residue of vacuum distillation mainly consists of resinous substances and has a high content of metals (nickel, vanadium). A scheme has been proposed for refining heavy oil in order to obtain unique high-quality products: fuels with great low-temperature properties, low-viscosity bases of drilling fluids, naphthenic oils of various viscosities, high-quality bitumen and coke, Ni, V metal concentrate.

No abstract