Catalyst – solid sorbent – or support therefor: product or process – Regenerating or rehabilitating catalyst or sorbent – Gas or vapor treating
Patent
1982-05-05
1984-09-18
Konopka, P. E.
Catalyst, solid sorbent, or support therefor: product or process
Regenerating or rehabilitating catalyst or sorbent
Gas or vapor treating
208140, 502 36, B01J 2396, C10G 3509, C10G 35085
Patent
active
044725140
ABSTRACT:
A process is disclosed for reactivating agglomerated iridium-containing catalysts, in series, and particularly platinum-iridium on alumina reforming catalysts. The process includes a reducing step, involving contacting a decoked agglomerated catalyst with a reducing gas, such as hydrogen, to reduce agglomerated iridium oxides to the free metal, a halide pretreatment step to increase the halide level of the catalyst to about 1.3 weight percent and above, a halogen/water vapor redispersion step at elevated temperature and a contacting of a second catalyst, in series, with the halogen/water vapor effluent at elevated temperature to partially burn-off the carbon deposits on the catalyst surface. Utilizing the effluent halogen stream, rather than subjecting to a scrubbing operation represents a savings in process costs, minimizes pollution problems and provides additional halogen protection to subsequent catalyst reactors in the process scheme.
REFERENCES:
patent: 3622520 (1971-11-01), Hayes
patent: 3625860 (1971-12-01), Condrasky
patent: 3904510 (1975-09-01), Sinfelt et al.
patent: 3937600 (1976-02-01), Yates et al.
patent: 3939061 (1976-02-01), Paynter et al.
patent: 3939062 (1976-02-01), Sinfelt et al.
patent: 3941682 (1976-03-01), Kmak et al.
patent: 3941716 (1976-03-01), Paynter
patent: 3943052 (1976-03-01), Kmak et al.
patent: 3981823 (1921-09-01), Yates
patent: 3998755 (1976-12-01), Hayes
patent: 4046673 (1977-09-01), Paynter et al.
patent: 4159938 (1979-07-01), Lewis
patent: 4172817 (1979-10-01), Yates et al.
patent: 4359400 (1982-11-01), Landoct et al.
Exxon Research and Engineering Co.
Konopka P. E.
Mazer Edward H.
North Robert J.
LandOfFree
Process for reactivating iridium-containing catalysts in series 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 reactivating iridium-containing catalysts in series, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for reactivating iridium-containing catalysts in series will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-794554