METHOD FOR HYDRODESULPHURISATION OF OLEFINIC GASOLINE FRACTIONS CONTAINING SULPHUR USING CATALYST REJUVENATED WITH ORGANIC COMPOUND Russian patent published in 2024 - IPC C10G45/08 B01J8/02 B01J8/04 B01J21/04 B01J21/14 B01J27/00 

FIELD: chemistry.

SUBSTANCE: invention relates to a method for hydrodesulphurisation of an olefinic gasoline fraction containing sulphur, in which said gasoline fraction, hydrogen and a rejuvenated catalyst are brought into contact at temperature of 200 °C to 400 °C, full pressure from 1 to 3 MPa, hourly space velocity, defined as the volumetric flow rate of the raw material, related to the volume of the catalyst, from 1 to 10 h^-1 and the volume ratio of hydrogen/gasoline raw material from 100 to 1200 Nl/l, rejuvenated catalyst and comprises at least one group VIII metal, at least one group VIB metal, a transition aluminium oxide support and at least one organic compound containing oxygen and/or nitrogen, rejuvenated catalyst is derived from at least partially spent catalyst of hydrodesulphurisation of olefin gasoline fraction containing sulphur, rejuvenation includes regeneration of at least partially spent catalyst, its contact with at least one organic compound and drying.

EFFECT: improved selectivity and increased activity of the catalyst with respect to hydrodesulphurisation and hydrogenation of olefins.

12 cl, 5 tbl, 16 ex