METHOD OF OIL RESIDUALS VISCOSITY BREAKING Russian patent published in 2003 - IPC

FIELD: petroleum refining industry, oil residuals viscosity breaking. SUBSTANCE: invention presents a method of a viscosity breaking of petroleum residual. The method provides for heating of the petroleum residuals to the temperature of its viscosity breaking with production of a gas, gasoline fractions and a viscosity breaking residual. Then the rest of a viscosity breaking residual is separated for three factions: light gas oil, heavy gas oil and the heavy residual; then light gas oil is mixed with the heavy residual at the ratio of 10-50 % of light gas oil and 50-90 % of the heavy residual, and the heavy gas oil and the left part of the light gas oil are used as raw stock for production of the engine fuels. The limits of boiling and output of the fractions are corrected depending on the nature of the initial feed stock and the given viscosity of the boiler fuel. EFFECT: the method allows to simplify technology of the petroleum residual process, to deepen the petroleum residual refining, as well as to expand resources of the raw stock for production of the engine fuels. 2 cl, 2 ex