METHOD OF PRODUCING HIGH-OCTANE GASOLINE FRACTIONS AND AROMATIC HYDROCARBONS Russian patent published in 2019 - IPC C10G35/95 C10G51/04 C10G59/02 

FIELD: technological processes.

SUBSTANCE: method of producing high-octane gasoline fractions and aromatic hydrocarbons C₆-C₁₀ from hydrocarbon raw materials boiling in the boiling point range of gasoline-naphtha fractions by heating, evaporation and overheating to processing temperature, its further contact at temperature of 320–480 °C and increased pressure with periodically regenerated catalyst containing ZSM-5 or ZSM-11 zeolite, cooling and partial condensation of contact products, their dividing by separation and rectification in a stabilization column with extraction of hydrocarbon gases fraction(s) on top of this column and stable gasoline fraction column bottom, rectification of liquid fraction in rectification column with extraction of liquid distillate by column top and heavy residue fraction column bottom, where separation of contact products is carried out at temperature of 150–220 °C or at temperature providing content of molar fraction of liquid in contact products equal to 0.05–0.25, recovered at separation stage of contact products liquid fraction is supplied to rectification column, rectification column distillate is fed into stabilization column together with steam-gas fraction obtained during separation of contact products with further extraction of target product by stabilizer column bottom.

EFFECT: reduced power consumption – amount of heat and coolant required for separation of reaction products.

3 cl, 5 ex