Patent ID: 8728404
Filing Date: 2014-05-20
Classification: B01J,C10G

Abstract:
1. A vessel regenerating used catalyst comprising at least two combustion zones including a first combustion zone provided with at least two walls ( 5 a , 5 b ) between which the catalyst circulates as a moving bed, and provided with at least one conduit ( 4 ) for introducing at least one oxygen-containing gas entering the moving bed via one of the walls and leaving via another wall, and a conduit removing oxygen depleted gas from the vessel, and including a second combustion zone, provided with a second conduit introducing at least one oxygen-containing gas, said vessel further having a lower section accommodating, a flame front ( 36 ) and said vessel further comprising a zone (FC) monitoring and controlling the end of combustion located below the section accommodating the flame front of a last of the combustion zones (Z 2 ), said monitoring and control zone (FC) being provided with a third conduit ( 11 ) introducing an oxygen-containing monitoring and control gas and at least one device measuring the temperature and/or the oxygen content in the gas and/or the catalyst leaving the monitoring and control zone, said third conduit ( 11 ) being separate and below said at least one conduit ( 4 ), and at least one separator ( 29 ) located between the monitoring and control zone and the last of the combustion zones so as to prevent the passage of gas and allow passage of the catalyst.