IMPROVED SENSITIVITY OF COKE, COMBUSTIBLE FROM SURFACE OF CATALYST FOR METHOD FOR DEHYDROGENATION OF LIGHT PARAFFINS Russian patent published in 2016 - IPC B01J38/18 B01J38/20 B01J38/34 B01J38/42 

FIELD: chemistry.

SUBSTANCE: invention relates to method of dehydrogenation catalyst regenerating involving: catalyst passage to first stage in regenerator reactor, wherein catalyst is processed at first set of combustion conditions by first stream of regeneration gas within first stage, and obtaining of intermediate catalyst stream, wherein first regeneration gas has maximum oxygen content at input of 2 % by volume and first set of combustion conditions includes gas at inlet with temperature of 450 °C to 600 °C; passage of intermediate catalyst stream to second stage in regenerator reactor, wherein catalyst is processed under second set of combustion conditions by first part of second regeneration gas flow under second stage, and obtaining second intermediate catalyst stream, said gas has maximum oxygen content of 10 % by volume and second set of combustion conditions includes gas at inlet with temperature of 450 °C to 600 °C, and passage of second intermediate catalyst stream to third step in regenerator reactor, wherein catalyst is processed under third set of combustion conditions of second part of second regeneration gas flow under third stage, and production of regenerated catalyst stream, in which first regeneration gas flow of and second regeneration gas flow are independent flows supplied through independent gas line.

EFFECT: technical result is in improvement of catalyst regenerating method.

6 cl, 4 dwg