HIGH-OCTANE GASOLINE PRODUCTION PROCESS Russian patent published in 2006 - IPC C10G35/04 C10G63/02 B01J23/36 B01J23/42 

FIELD: petroleum processing and petrochemistry.

SUBSTANCE: process comprises catalytic reforming of straight-run hydrofined gasoline fraction, rectification of reforming products to produce first fraction having dry point temperature 110°C and below and second fraction having boiling start temperature 110°C and below, contact of the first fraction first with aluminoplatinum catalyst containing, wt %: 0.35-0.40% platinum 0.35-0.40, 0.36-0.42% rhenium 0.36-0.42, 0.25-0.30% cadmium 0.25-0.30, chlorine 0.35-0.40, and balancing amount of alumina at temperature 200-250°C and pressure up to 4 MPa and then with isomerization catalyst containing, wt %: platinum 0.30-0.35, zirconium oxide 70-80, alumina 10-25, sulfate ion 6-12, sodium oxide 0.02-0.03, iron 0.03-0.04, and chlorine 0.03-1.32 at temperature 185-200°C and pressure 3-3.5 MPa, and mixing of contact product with second fraction.

EFFECT: increased octane number of desired product at insignificant increase in content of aromatic hydrocarbons.

2 tbl, 5 ex