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
1998-02-12
2000-02-15
Niebling, John F.
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,...
502 22, B01J 3860, B01J 2728
Patent
active
060252928
ABSTRACT:
Disclosed are (1) a method for the regeneration of a denitration catalyst wherein, in order to regenerate a denitration catalyst having reduced denitration power, the catalyst is cleaned with a cleaning fluid having a hydrofluoric acid concentration of 0.3 to 3% by weight and maintained at a temperature of 20 to 80.degree. C., and (2) a method for the regeneration of a denitration catalyst which comprises the steps of cleaning a denitration catalyst having reduced denitration power under the conditions described in (1) above, drying the cleaned catalyst, and impregnating the catalyst with a catalytically active component so as to support it on the catalyst.
REFERENCES:
patent: 3635838 (1972-01-01), Gatsis et al.
patent: 4615991 (1986-10-01), Obayashi et al.
patent: 4833113 (1989-05-01), Imanari et al.
Hattori Akira
Iida Kouzo
Morii Atsushi
Naito Osamu
Obayashi Yoshiaki
Ghyka Alexander G.
Mitsubishi Heavy Industries Ltd.
Niebling John F.
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