COMBINED MANUFACTURING METHOD OF ULTRALOW SULPHUR-BEARING DIESEL FUEL AND LOW-SULPHUR BOILER FUEL

摘要

FIELD: oil and gas industry.;SUBSTANCE: invention refers to hydrocracking of hydrocarbon material. Invention refers to the hydrocracking method for obtaining ultralow sulphur-bearing diesel fuel, which involves the following: (a) interaction of the first hydrocarbon raw material (1) with hydrogen (28) in hydrocracking zone (3), which contains catalyst of hydrocracking; and as a result, hydrocarbons are obtained with boiling limits of diesel fuel; (b) introduction of output flow (4) obtained at stage (a) from hydrocracking zone and the second hydrocarbon raw material (5) to the first desulphuration zone (7) containing desulphuration catalyst; as a result, the first output flow (8) from desulphuration zone is obtained; (c) direction of the first output flow (8) from desulphuration zone to hot steam-liquid high-pressure separator (9) so that the first vaporous hydrocarbon flow (10) containing hydrogen and the first liquid hydrocarbon flow (25) is obtained; (d) introduction of the first vaporous hydrocarbon flow containing hydrogen and the third hydrocarbon raw material (11) containing hydrocarbons with boiling limits of diesel fuel to the second desulphuration zone (14) containing desulphuration catalyst; and as a result, output flow (15) from the second desulphuration zone is obtained; (e) direction of output flow (15) from the second desulphuration zone to cold vapour-liquid separator (18); as a result, gaseous flow (26) saturated with hydrogen and the second liquid hydrocarbon flow (19) is obtained; and (f) direction of the first liquid hydrocarbon flow (25) and the second liquid hydrocarbon flow (19) to separation zone (20); as a result, hydrocarbon flow (24) including hydrocarbons with boiling limits of diesel fuel and hydrocarbon flow (23) containing hydrocarbons boiling at temperature of higher than 565°C is obtained.;EFFECT: obtaining ultralow sulphur-bearing diesel fuel.;10 cl, 1 dwg