Catalyst – solid sorbent – or support therefor: product or process – Regenerating or rehabilitating catalyst or sorbent – Gas or vapor treating
Patent
1988-10-20
1990-04-03
Konopka, Paul E.
Catalyst, solid sorbent, or support therefor: product or process
Regenerating or rehabilitating catalyst or sorbent
Gas or vapor treating
4232155, 502 38, B01J 3814, B01J 3812, B01D 5336, F23N 300
Patent
active
049140655
ABSTRACT:
The invention relates to a process for regenerating ceramic honeycomb filters by removing soot heaped thereon through combustion, which comprises the steps of controlling the combustion of the soot such that a time t (minutes), required for raising a temperature of an exhaust gas from a soot-ignition temperature, Tig, to Tig+200.degree. C., satisfies the following inequality. ##EQU1## in which: Q: a total flow rate of the waste gas per unit volume of the filter in the initial stage (Nm.sup.3 /min/l)
REFERENCES:
patent: 2235166 (1941-05-01), Pyzel
patent: 4451441 (1984-05-01), Ervett et al.
patent: 4828807 (1989-05-01), Domesie et al.
Higuchi Toshiaki
Hijikata Toshihiko
Konopka Paul E.
NGK Insulators Ltd.
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