Baffled FCC regeneration process and apparatus

Details Baffled FCC regeneration process and apparatus Baffled FCC regeneration process and apparatus

1992-09-18

1994-02-22

McFarlane, Anthony

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Cracking

208152, 208153, 502 41, 502 42, C10G 1118

Patent

active

052883973

ABSTRACT:
A process and apparatus for dense phase, at least partially co-current, fluidized bed regeneration of FCC catalyst are disclosed. Catalyst regeneration occurs in a dense phase fluidized bed, with catalyst flowing laterally from a spent catalyst inlet to a regenerated catalyst outlet. Regeneration air flows up through the dense bed into a dilute phase region defined at the base by the dense phase bed and at the top by a horizontal baffle. The plate has openings or baffles forcing the dilute phase, consisting of entrained catalyst and flue gas, to flow horizontally in the same direction as the lateral flow of catalyst in the dense bed. Concurrent flow of at least the dilute phase material and the dense bed material improves regeneration and can reduce NOx emissions.

REFERENCES:
patent: 4036779 (1977-07-01), Schatz et al.
patent: 4606814 (1986-08-01), Haddad et al.
patent: 4994424 (1991-02-01), Leib et al.
patent: 5021146 (1991-06-01), Chin
patent: 5062945 (1991-11-01), Pappal et al.
patent: 5198397 (1993-03-01), Raterman

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