Catalyst – solid sorbent – or support therefor: product or process – Regenerating or rehabilitating catalyst or sorbent – Gas or vapor treating
Patent
1998-04-14
2000-08-15
Bos, Steven
Catalyst, solid sorbent, or support therefor: product or process
Regenerating or rehabilitating catalyst or sorbent
Gas or vapor treating
502 38, 502 43, 502 45, 502 46, 502 49, 502 52, B01J 2034, B01J 3844, B01J 3812, B01J 3834, B01J 3822
Patent
active
061036528
ABSTRACT:
The invention concerns a process for moving bed regeneration of a reforming or aromatic hydrocarbon production catalyst. The catalyst includes a support, at least one noble metal and at least one halogen. The process includes a combustion step in which the catalyst is treated in at least two successive combustion zones. Also, the process includes each combustion zone separated from adjacent combustion zones allowing catalyst to pass and preventing passage of gas, at least one oxygen-containing gas introduced into each zone and produced gases extracted from each zone, and the severity of the operating conditions in each zone increasing in the direction of catalyst flow. Advantageously, the combustion step ends in a zone for monitoring and controlling combustion completion characterized by a low or zero oxygen consumption.
REFERENCES:
patent: 4849092 (1989-07-01), Ham et al.
patent: 4872970 (1989-10-01), Boyle
patent: 5034117 (1991-07-01), DeBonneville et al.
patent: 5053371 (1991-10-01), Williamson
Bromet Emmanuelle
Brunet Fran.cedilla.ois-Xavier
Deves Jean-Marie
Bos Steven
Institut Francois du Petrole
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