HYDROCARBON FEEDSTOCK PROCESSING METHOD (OPTIONS)

摘要

FIELD: petrochemical processes.;SUBSTANCE: group of inventions relates to processing of hydrocarbon feedstock having dry point from 140 to 400^°C and is intended for production of fuel fractions (gasoline, kerosene, and/or diesel) on solid catalysts. In first embodiment of invention, processing involves bringing feedstock into contact with regenerable catalyst at 250-500^°C, pressure 0.1-4 MPa, and feedstock weight supply rate up to 10 h^-1, said catalyst containing (i) crystalline silicate or ZSM-5 or ZSM-14-type zeolite having general empiric formula: (0.02-0.35)Na₂O-E₂O₃-(27-300)SiO₂-kH₂O), where E represents at least one element from the series: Al, Ga, B, and Fe and k is coefficient corresponding to water capacity; or (ii) silicate or identically composed zeolite and at least one group I-VIII element and/or compound thereof in amount 0.001 to 10.0 % by weight. Reaction product is separated after cooling through simple separation and/or rectification into fractions: hydrocarbon gas, gasoline, kerosene, and/or diesel fractions, after which catalyst is regenerated by oxygen-containing gas at 350-600^°C and pressure 0.1-4 MPa. Hydrocarbon feedstock utilized comprises (i) long hydrocarbon fraction boiling away up to 400^°C and composed, in particular, of isoparaffins and naphtenes in summary amount 54-58.1%, aromatic hydrocarbons in amount 8.4-12.7%, and n-paraffins in balancing amount; or (ii) long hydrocarbon fraction boiling away up to 400^°C and composed, in particular, of following fractions, ^°C: 43-195, 151-267, 130-364, 168-345, 26-264, 144-272. In second embodiment, feedstock boiling away up to 400^°C is processed in presence of hydrogen at H₂/hydrocarbons molar ratio between 0.1 and 10 by bringing feedstock into contact with regenerable catalyst at 250-500^°C, elevated pressure, and feedstock weight supply rate up to 10 h^-1, said catalyst containing zeolite having structure ZSM-12, and/or beta, and/or omega, and/or zeolite L. and/or mordenite, and/or crystalline elemento-aluminophosphate and at least one group I-VIII element and/or compound thereof in amount 0.05 to 20.0 % by weight. Again, reaction product is separated after cooling through simple separation and/or rectification into fractions: hydrocarbon gas, gasoline, kerosene, and/or diesel fractions, after which catalyst is regenerated by oxygen-containing gas at 350-600^°C and pressure 0.1-6 MPa.;EFFECT: improved flexibility of process and enlarged assortment of raw materials and target products.;12 cl, 3 tbl, 22 ex