HIGH-OCTANE GASOLINE PRODUCTION PROCESS Russian patent published in 2004 - IPC

FIELD: petroleum processing. SUBSTANCE: straight-run gasoline fraction 85-180 C is subjected to catalytic reforming at 480-530 C, pressure 4 MPa, feedstock volumetric flow rate 1.5 h^-1, and circulating factor of hydrogen-containing gas 1500 cu.m/cu/m/ Reforming products are subjected to rectification to give first fraction with dry point 120 C and below and second fraction starting to boil at 120 C and higher. First fraction contacts with alumina-supported catalyst containing 13- 20% tungsten trioxide and 0.9-6% nickel dioxide at 160-250 C and pressure 1.8-4.2 MPa. Contact product of the first fraction is combined with the second reforming products fraction. EFFECT: improved quality of product due to reduced content of aromatic hydrocarbons, including benzene (most toxic and undesired component). 2 tbl, 5 ex