Introduction of naphthenic crude oil
The naphthenic crude oil, also known as pitch-based crude oil, is a crude oil containing more naphthenes. The naphthenic crude oil produced by the naphthenic crude oil has higher octane number, the diesel has a lower cetane number, and the lubricating oil fraction contains wax. The amount is small or almost free of wax, the freezing point is low, the viscosity index is low, and the residue contains more asphalt. Although the viscosity of the naphthenic crude oil is poor, but the low freezing point can be used to prepare oils with low pour point requirements and low viscosity temperature requirements, such as electrical oils and refrigeration oils.