Catalyst – solid sorbent – or support therefor: product or process – Regenerating or rehabilitating catalyst or sorbent – Treating with a liquid or treating in a liquid phase,...
Patent
1992-05-01
1993-06-08
Konopka, Paul E.
Catalyst, solid sorbent, or support therefor: product or process
Regenerating or rehabilitating catalyst or sorbent
Treating with a liquid or treating in a liquid phase,...
134 20, 134 39, 210761, 431 3, 502 26, B01J 3870, B08B 700, C02F 168
Patent
active
052179354
ABSTRACT:
Processes for the regeneration of catalysts, such as hydrogenation catalysts, and the defouling of objects, which are contaminated with carbonaceous deposits. The catalyst or object is contacted with water, oxygen-containing gas, and at least one alkaline material maintained at a pH of at least 7.0, and at a temperature and pressure sufficient to combust at least a portion of the carbonaceous deposits. The process of the present invention enables one to remove carbonaceous deposits from catalysts or contaminated the leaching of metals from the catalysts or objects by acidic by-products of the combustion process.
REFERENCES:
patent: 3956088 (1976-05-01), Fassell et al.
patent: 4017421 (1977-04-01), Othmer
patent: 4123500 (1978-10-01), Acres et al.
patent: 4604957 (1986-08-01), Cederquist
ABB Lummus Crest Inc.
Konopka Paul E.
Lillie Raymond J.
Olstein Elliot M.
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