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,...
Reexamination Certificate
2006-08-08
2006-08-08
Johnson, Edward M. (Department: 1754)
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,...
C502S029000, C502S514000
Reexamination Certificate
active
07087546
ABSTRACT:
The present invention pertains to a process for regenerating and rejuvenating an additive-based hydrotreating catalyst containing Group VIB and Group VIII hydrogenation metals. The process comprises the steps of regenerating the catalyst by contacting it with an oxygen-containing gas at a maximum temperature of 500° C., followed by rejuvenating the catalyst by contacting it with an organic additive comprising an organic compound, other than a compound that the catalyst is contacted with in the course of its use as a catalyst prior to regeneration and rejuvenation. The organic additive is incorporated into the catalyst. If necessary, the catalyst may then be dried at such a temperature that at least 50% of the additive is maintained in the catalyst. The process according to the invention makes it possible to restore the activity of a used additive-based hydrotreating catalyst to its original level, or even to improve it to above that level.
REFERENCES:
patent: 4028227 (1977-06-01), Gustafson
patent: 4122000 (1978-10-01), Farrell et al.
patent: 4486616 (1984-12-01), Chu et al.
patent: 5155075 (1992-10-01), Innes et al.
patent: 5275990 (1994-01-01), Clark et al.
patent: 6635596 (2003-10-01), Eijsbouts et al.
patent: 0 156 226 (1985-10-01), None
patent: 0 601 722 (1994-06-01), None
patent: 1 043 069 (2000-10-01), None
patent: 2 699 430 (1994-06-01), None
patent: 4-166231 (1992-06-01), None
patent: 4-166233 (1992-06-01), None
patent: 6-210182 (1994-08-01), None
patent: 6-339635 (1994-12-01), None
patent: WO 96/41848 (1996-12-01), None
European Search Report No. EP 99 20 2193 dated Nov. 12, 1999.
International Search Report No. PCT/EP 00/06050 dated Oct. 10, 2000.
Derwent Abstract 94-227099/28 abstracting FR 2 699 430.
Derwent Abstract 92-246393/30 abstracting JP 4-166231.
Derwent Abstract 92-246395/30 abstracting JP 4-166233.
Derwent Abstract 94-282690/35 abstracting JP 6-210182.
Derwent Abstract 95-063417/09 abstracting JP 6-339635.
Furimsky, E. et al., “Regeneration of Hydroprocessing Catalysts,” Catal. Today, 17(4), (1993), pp. 561-606, 623-624, 640-645, 654-659.
Dufresne, P. et al., “Off-Site Regeneration of Hydroprocessing Catalysts,” Revue de L'Institut Francais du Petrole, 50(2), (1995), pp. 283-293.
Furimsky, E., “Hydroprocessing Catalysts. Utilization and Regeneration Schemes,” Revue de L'Institut Francais du Petrole 44(3), (1989), pp. 337-354.
Yoshimura, Y. et al., “Oxidative Regeneration of Hydrotreating Catalysts,” Appl. Catal., 23(1), (1986), pp. 157-171.
Eijsbouts Sonja
Houtert Franciscus Wilhelmus
Jansen Marcel Adriaan
Kamo Tetsuro
Plantenga Frans Lodewijk
Albemarle Corporation
Eymard Frank C.
Johnson Edward M.
LandOfFree
Process for regenerating and rejuvenating additive-based... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for regenerating and rejuvenating additive-based..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for regenerating and rejuvenating additive-based... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3613441