B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
B01J 38/34 (2006.01) C10G 11/18 (2006.01)
Patent
CA 2087275
A process and apparatus (Figs. 1,2,3 and 4) for con- trolled, multi-stage regeneration of FCC catalyst is dis- closed. A modified high-efficiency catalyst regenerator (80), with a fast fluidized bed coke combustor (62), dilute phase transport riser (83), and second fluidized bed (82) regener- ates the catalyst in at least two stages. The primary stage of regeneration is in the coke combustor (62). Second stage ca- talyst regeneration occurs in the second fluidized bed (82). The amount of combustion air added to both regeneration stages is set to maintain partial CO combustion in both stages. Controlled multi-stage regeneration reduces the steaming or deactivation of catalyst during regeneration, maximizes coke burning capacity of the regenerator (80), and minimizes or eliminates NOx emissions.
Owen Hartley
Schipper Paul Herbert
Kirby Eades Gale Baker
Mobil Oil Corporation
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