METHOD OF REFORMING STRAIGHT-RUN GASOLINE FRACTIONS Russian patent published in 2010 - IPC C10G35/85 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of reforming straight-run gasoline fractions in the presence of a hydrogen-bearing gas in a system of several series-connected reactors with platinum-containing catalysts at high pressure and temperature, carried out in three steps with pressure at the input of the system of reforming reactors equal to 1.5 MPa, molar ratio of hydrogen/raw material of not less than 8. At the first step, aromatisation of cycloalkanes and alkanes through contact of hydrocarbon components with an aluminium-platinum-rhenium catalyst is carried out with mass velocity of feeding the raw material equal to 2 h^-1 in terms of the mass of the catalyst and temperature of 490-500°C. At the second step, hydroisomerisation of arenas, cycloalkanes and alkanes is carried out on a zirconium-aluminium sulphate catalyst which contains platinum, with mass velocity of feeding raw material equal to 4-8 h^-1 in terms of mass of catalyst and temperature of 300°C and at the third step, aromatisation of cycloalkanes on an aluminium-platinum-rhenium catalyst is carried out with mass velocity of feeding raw material equal to 4-8 h^-1 and temperature of 420-440°C.

EFFECT: obtaining a high-octane component with low content of aromatic hydrocarbons and high efficiency of preparing modern environmentally safe petrol.

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