Catalyst – solid sorbent – or support therefor: product or process – Regenerating or rehabilitating catalyst or sorbent – Gas or vapor treating
Patent
1991-11-25
1993-03-30
Konopka, Paul E.
Catalyst, solid sorbent, or support therefor: product or process
Regenerating or rehabilitating catalyst or sorbent
Gas or vapor treating
208113, 208120, 208161, 208163, 208164, 422144, 502 42, C10G 1105, C10G 1104, B01J 3836, B01J 2020
Patent
active
051983974
ABSTRACT:
A process and apparatus for multi-stage fluidized bed regeneration of spent FCC catalyst in a single vessel. At least two isolated relatively dense phase fluidized beds are disposed beneath a common dilute phase region. Spent catalyst discharged into a primary regeneration stage is regenerated to produce flue gas and partially regenerated catalyst, which preferably overflows into the second stage. Flue gas and entrained catalyst from each fluidized bed are processed in two trains of separation means, preferably cyclones. The inlets of each train are disposed above the isolated fluidized beds, and are effectively separated although sharing an open dilute phase region.
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patent: 2700641 (1955-01-01), Rehbein
patent: 2862786 (1958-12-01), Trainer
patent: 4820404 (1989-04-01), Owen
patent: 4822761 (1989-04-01), Walters et al.
patent: 4980048 (1990-12-01), Leib et al.
Keen Malcolm D.
Konopka Paul E.
McKillop Alexander J.
Mobil Oil Corporation
Stone Richard D.
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