Process for calcining a denitrating catalyst

Details Process for calcining a denitrating catalyst Process for calcining a denitrating catalyst

1989-08-21

1991-04-02

Konopka, Paul E.

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

Catalyst or precursor therefor

Sulfur or compound containing same

423239, 432 25, 502 48, 502517, 502527, B01J 27053, B01J 800

Patent

active

050047183

ABSTRACT:
A process for calcining a sulfate-containing denitrating catalyst to reduce the sulfate content therein is provided. A plurality of catalyst units are arranged on a reticulating belt in a calcining furnace. The reticulate belt is continuously moving within the furnace. Fresh hot air is passed through the denitrating catalyst units in a first direction and then in a second direction. By controlling the rate of hot air flow, the content of sulfate group in the denitrating catalyst is reduced to about 4-7% by weight.

REFERENCES:
patent: 2723949 (1955-11-01), McCausland
patent: 4085193 (1978-04-01), Nakajima et al.
patent: 4119568 (1978-10-01), Nishida et al.
patent: 4567630 (1986-02-01), Ishida et al.
patent: 4582301 (1986-04-01), Wunning

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