METHOD OF HYDROGENISATION CATALYST REDUCTION Russian patent published in 2009 - IPC B01J38/14 C10G45/08 B01J23/94 

FIELD: chemistry.

SUBSTANCE: invention refers to the method of the reduction of hydrogenisation catalyst by the way of serial operations of 1) hydrocarbon desorption from the surface of the spent catalyst located in the stationary layer in the media of hydrogen-containing gas at temperature 200-400°C; 2) passivation of the catalyst surface by its treatment with oxygen-containing gas (oxygen content is 0.02-0.5 vol. %) in the stationary layer at temperature 100-120°C; 3) burn-off of the hydrocarbon condensation products in the oxygen-containing gas flow at temperature 400-550°C; 4) catalyst conversion from oxide to presulphide form by their contacting with elemental sulphur in the air or inert gas flow. The burn-off of the hydrocarbon condensation products and catalyst transforming are implemented in the moving-bed catalyst with burn-off temperature being regulated with the oxygen-containing gas temperature and volume ratio oxygen-containing gas :catalyst in the range (15-30):1.

EFFECT: reduction of the hydrogenisation catalyst with minimal destruction losses of the catalyst.

3 cl, 5 tbl, 2 ex, 2 dwg