HIGH-OCTANE GASOLINE PRODUCTION PROCESS Russian patent published in 2000 - IPC

FIELD: petroleum processing. SUBSTANCE: straight-run gasoline fractions are subjected to reforming at 480-530 C and pressure up to 4 MPa in presence of platinum- containing catalyst to yield gasoline that is further rectified into head cut boiling off at 95 C, heart cut with boiling range from 60-65 to 85-95 C, and residual fraction boiling above 150 C. Head and residual fractions are combined and their mixture is brought into contact with catalyst containing VIII group metals (platinum, nickel, cobalt) on alumina carrier at 430-535 C and pressure 1.5-3.5 MPa. EFFECT: increased product quality due to reduced benzene content and increased octane number. 13 tbl, 12 ex