METHOD OF SELECTIVE TREATMENT OF GASOLINE FRACTIONS OF CATALYTIC CRACKING (VERSIONS) Russian patent published in 2009 - IPC C10G45/06 C10G65/04 

FIELD: oil and gas production.

SUBSTANCE: inventions relates to oil processing, particularly to methods of refining of gasoline fractions. Invention relates to method of selective treatment of gasoline fractions of catalytic cracking by means of its stepped hydro-refining at presence of alumo-oxide catalyst in medium of hydrogen at increased pressure and temperature with separation of product of the first stage for light and sinking fractions, with following hydro-refining of sinking fraction at second stage at temperature 280-340°C, pressure 2-3 MPa, volume velocity of raw material feeding 4-8 hour^-1 and mixing of received product after the second stage of hydro-refining with light fraction of product of the first stage with receiving of cleaned product. Separation of product of the first stage or separation of initial gasoline for light and sinking fractions is implemented by temperature 70-90°C at processing of raw materials with content of sulfur higher than 0.16% wt, 90-120°C - at processing of raw materials with content of sulfur 0.005-0.16% wt.

EFFECT: declared methods provide for reduction of sulfur content up to level not more than 0,0010% wt in gasoline fraction at minimal reduction of content of olefinic hydrocarbons.

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