FIELD: petroleum processing.
SUBSTANCE: two or more types of hydrocarbon stock with sulfur level above 50 ppm are combined to form blended stock. The latter is subjected to hydrodesulfurization step to reduced sulfur resulting in production of reduced-sulfur hydrocarbon fraction. Process is adjusted so that a situation is achieved wherein level of sulfur in hydrocarbon product is close or equal to desired sulfur level, production of hydrocarbon product with desired sulfur level being optimized through integrated control of hydrocarbon stock blending step and installation operation in hydrodesulfurization step taking into account level of sulfur in blended hydrocarbon product subjected to hydrodesulfurization.
EFFECT: maximized production of lower sulfur-level gas oil.
24 cl, 4 cl
