Process for the reactivation of nickel-alumina catalysts

Details Process for the reactivation of nickel-alumina catalysts Process for the reactivation of nickel-alumina catalysts

1993-05-11

1994-10-18

Konopka, Paul E.

Catalyst, solid sorbent, or support therefor: product or process

Regenerating or rehabilitating catalyst or sorbent

Including segregation of diverse particles

481987, 48214A, 502 27, 502 28, 502 38, 502516, B01J 3872, B01J 2120, B01J 2394, C10J 346

Patent

active

053568451

ABSTRACT:
A process for the reactivation, or rejuvenation of a nickel-alumina catalyst employed in the production of a gas comprised of an admixture of hydrogen and carbon monoxide, or synthesis gas, by the conversion, in a reactor, or reaction zone, of light hydrocarbons in a fluidized bed of the catalyst at elevated temperature, in the presence of steam and oxygen. Catalyst reactivation is accomplished by withdrawing a portion of the catalyst from the fluidized bed of the reactor and treating the catalyst in an oxidation zone at temperature sufficient to oxidize and convert the nickel component of the catalyst to nickel aluminate and disperse said nickel aluminate within the alumina support, and then recycling the treated catalyst to the reactor, or reaction zone, to reactivate and increase the activity of the catalyst. The catalyst, on reduction in the reactor, or reaction zone, is provided an additional boost in activity by washing, treating or contacting the catalyst from the elevated temperature oxidation zone with an acid sufficient to remove trace impurities without removing any substantial amount of the nickel aluminate, and without forming a residue on the catalyst surface. The normal tendency of the catalyst to agglomerate at reaction conditions is also reduced by the acid treatment.

REFERENCES:
patent: 2380731 (1945-07-01), Drake et al.
patent: 3186957 (1965-06-01), Stiles
patent: 3342751 (1967-09-01), Hayes
patent: 4042532 (1977-08-01), McArthur
patent: 4191664 (1980-03-01), McArthur
patent: 4456703 (1984-06-01), Aldridge
patent: 4522928 (1985-06-01), McVicker et al.

Affiliated with

Also associated with

Rating

Process for the reactivation of nickel-alumina catalysts 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 the reactivation of nickel-alumina catalysts, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the reactivation of nickel-alumina catalysts will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2372196