METHOD OF GASOLINE FRACTION PREPARING Russian patent published in 1995 - IPC

FIELD: oil processing and petrochemical industries. SUBSTANCE: product: gasoline fraction, yield is 47% octane number is 87 (motor method). Raw: olefin-containing gas. Catalyst: zeolite of type Z8m-5 ЦВМ with mole ratio SiO₂:Al₂O₃ 31.5-35% zirconium oxide 20% zinc oxide 2% aluminium oxide is up to 100% Process conditions: basic reactor: 350-370 C, 0.3-0.4 MPa, feeding rate is 300-700 h^-1; additional reactor: 550-600 C, 0.3-0.4 MPa, feeding rate is 300-700 h^-1. There is turbulent fluidized catalyst layer into both reactors. Stabilization gases isolated from the liquid phase of reaction products and fresh regenerated catalyst were fed into additional reactor. Partially depleted catalyst is transfered from additional reactor to the basic one by reaction products. Part of catalyst is removed from the basic reactor for regeneration and then fed into additional reactor. EFFECT: improved method of gasoline fraction preparing. 4 cl, 1 dwg, 5 tbl