METHOD FOR CATALYTIC REFORMING OF PETROLEUM NAPHTHA Russian patent published in 2008 - IPC C10G35/85 

FIELD: chemistry.

SUBSTANCE: process proposed for catalytic reforming of petroleum naphtha in presence of hydrogenous gas is carried out in three stages in system of several series-connected reactors over platinic catalysts at increased pressure and temperature; on first stage cycloalkanes and alkanes aromatization is effected by contacting the hydrocarbon components with aluminium-platinum-rhenium catalyst at mass rate of crude material feed 4 to 8 hour^-1, relative to catalyst weight, and temperature 460-480°C; on second stage arenes, cycloalkanes, and alkanes hydro-isomerisation is effected over zirconium-sulphate catalyst, containing platinum, at mass rate of feed minimum 8 hour^-1, relative to catalyst weight, and temperature 150-200°C; and on third stage cycloalkanes aromatization is effected again over aluminium-platinum-rhenium catalyst also at mass rate of feed minimum 8 hour^-1, relative to catalyst weight, and temperature 360-400°C; the reforming reactors system input pressure being 1.5 MPa, and the hydrogenous gas is fed to the system entrance in quantity, corresponding hydrogen to raw material molar proportion minimum 8.

EFFECT: production of high-octane component with lowered aromatic hydrocarbons level, and increase in manufacture efficiency of modern pollution-free fuel.

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