FIELD: oil-and-gas production.
SUBSTANCE: it is described method of catalytic hydrogen cracking, provided for manufacturing of ultra low-sulphur diesel-fuel oil and which provides implementation of hydrogen cracking of hydrocarbon basic at increased values of temperature and pressure. Formed as a result flow flowing out from the zone of hydrogen cracking is stripped by hydrogen in corresponding area of implementation of stripping in which it is held, in essence, the same pressure which exists in the area of hydrogen cracking with formation at that the first gas hydrocarbon stream and the first liquid hydrocarbon flow. The first gas hydrocarbon stream containing carbohydrates, boiling point of which is in the same range that for diesel fuel, it is introduced into desulfurisation area and then partly condensed with receiving at that enriched by hydrogen gas flow and the second liquid hydrocarbon flow, containing carbohydrates, boiling point of which is in the same range as for diesel fuel. The first liquid flow is separated with receiving herewith of the third liquid hydrocarbon flow containing hydrocarbons, boiling point of which is in the same range as for diesel fuel, herewith this third flow is also introduced into desulfurisation zone. In conclusion it is provided capture of oil product flow, received in the form of ultra low-sulphur diesel fuel.
EFFECT: increasing of yield of ultra low-sulphur diesel fuel.
11 cl, 1 ex, 3 tbl, 1 dwg
