Catalyst – solid sorbent – or support therefor: product or process – Regenerating or rehabilitating catalyst or sorbent – Gas or vapor treating
Patent
1990-07-17
1991-12-31
Konopka, Paul E.
Catalyst, solid sorbent, or support therefor: product or process
Regenerating or rehabilitating catalyst or sorbent
Gas or vapor treating
208113, 208164, 502 40, 502 43, B01J 3836, B01J 3838, B01J 3834, C10G 1100
Patent
active
050772511
ABSTRACT:
A process for controlled, multi-stage regeneration of FCC catalyst is disclosed. A modified high efficiency catalyst regenerator, with a fast fluidized bed coke combustor, dilute phase transport riser, and second fluidized bed regenerates the catalyst in at least two stages. The primary stage of regeneration is in the coke combustor. Second stage catalyst regeneration occurs in the second fluidized bed. The amount of combustion air added to, and conditions in, the coke combustor are controlled to limit CO combustion, while the second stage of regeneration, in the second fluidized bed, achieves complete CO combustion. Controlled multi-stage regeneration reduces steaming or deactivation of catalyst during regeneration, increase coke burning capacity, and reduces NOx emissions.
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Owen Hartley
Schipper Paul H.
Konopka Paul E.
McKillop A. J.
Mobil Oil Corporation
Speciale C. J.
Stone Richard D.
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