METHOD FOR OBTAINING HIGH-OCTANE GASOLINE AND/OR AROMATIC HYDROCARBONS WITH LOW BENZENE CONTENT Russian patent published in 2011 - IPC C10G35/95 

FIELD: oil and gas industry.

SUBSTANCE: invention refers to method for obtaining high-octane benzene and/or aromatic hydrocarbons with low benzene content from hydrocarbon raw material, namely aliphatic hydrocarbons C₅-C₁₂ or aliphatic oxygen-containing compounds C₁-C₁₂, including in composition of basic products and by-products in oil, gas, chemical industry; phase of raw material contact in the first reaction zone is conducted at temperature of 400-600°C, pressure of 0.1-4.0 MPa and mass raw material supply rate of 1 -200 h^-1 with aromatisation catalyst on the basis of modified zeolite of MFI structural type which is characterised with value of molar ratio SiO₂/Al₂O₃ 20-133, residual content of sodium ions of less than 0.1 %, which is treated in addition with 0.01-2.0 "н" solution of ammonium fluoride. Obtained reaction flow is subject to contact in the second reaction zone at temperature of 300-400°C, pressure of 0.1-4.0 MPa and mass raw material supply rate of 1-40 h^-1 with catalyst of alkylation and/or transalkylation; at that, flow temperature at the inlet to the second reaction zone is not less than by 70°C lower than flow temperature at the inlet to the first reaction zone.

EFFECT: higher capacity of the process and output of gasoline.

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