Patent ID: 6410472
Filing Date: 2002-06-25
Classification: B01J,C10G

Abstract:
A process for regenerating a deactivated reforming catalyst contained in a multiple reaction zone system and which has become deactivated through employment in the reforming of a hydrocarbon, said process comprises: (a) purging said multiple reaction zone system with an inert gas; (b) subjecting said deactivated reforming catalyst to an oxidative burning off at a temperature and for a period of time sufficient to remove substantially all carbonaceous deposits thereon thereby providing a substantially carbon free catalyst; (c) subjecting said substantially carbon free catalyst to an oxygen treatment with a gas containing molecular oxygen at a temperature and for a time sufficient to effect the oxidation of the metals contained in said substantially carbon free catalyst thereby providing an oxidized catalyst; (d) purging said oxidized catalyst of molecular oxygen thereby providing a purged catalyst; (e) cooling said purged catalyst thereby providing a cooled catalyst; (f) reducing said cooled catalyst with hydrogen, said hydrogen being introduced into a reaction zone of said multiple reaction zone system; and (g) simultaneously with step (f) contacting said cooled catalyst with a chlorine-containing compound by introducing said chlorine-containing compound serially into each reaction zone of said multiple reaction zone system under conditions to effect decomposition of said chlorine-containing compound thereby providing a chlorine-treated catalyst.