METHOD OF PRODUCING HIGH-OCTANE ADDITIVE FOR MOTOR PETROL Russian patent published in 2011 - IPC C10L1/18 

FIELD: chemistry.

SUBSTANCE: in the method of producing high-octane additive for motor fuel, which involves sulphuric hydration, said hydration is carried out with a mixture of ethylene- and propylene-containing gases - a product of pyrolysis of hydrocarbon material by feeding said material into a first reactor for hydration of propylene from a mixture of sulphuric acid gases to obtain isopropyl sulphuric acid, further hydrolysis thereof to obtain a mixture of isopropyl alcohol and water, feeding the remaining mixture of gases into a second reactor for hydration of ethylene from the mixture of sulphuric acid gases to obtain ethyl sulphuric acid, further hydrolysis thereof to obtain a mixture of ethyl alcohol and water, fractionation of the mixture of isopropyl and ethyl alcohol and water to obtain the end product.

EFFECT: high stability and antiknock properties of the high-octane additive, low power consumption and reduced production wastes, which ensure high profitability of oil refining.

11 cl, 1 dwg, 2 tbl