Self-reactivating type denitrating method

Details Self-reactivating type denitrating method Self-reactivating type denitrating method

1990-04-20

1992-01-14

Heller, Gregory A.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Nitrogen or nitrogenous component

B01J 800, C01B 2100

Patent

active

050808761

ABSTRACT:
A self-reactivating denitrating method and equipment in which the exhaust gas from the combustor flows and goes through an adsorbing catalyst tower filled with Cu(II) exchangeable high silica zeolite at a temperature of normal to 750.degree. C. to let NOx contained in the exhaust gas be adsorbed in the zeolite and decomposed into N.sub.2 and O.sub.2 resulting in achievement of cleaning the exhaust gas and then the zeolite saturated with NOx is put in touch countercurrently with air for combustion to let the adsorbed NOx be desorbed to reactivate Cu(II)exchangeable high silica zeolite and, at the same time, the air for combustion containing the adsorbed NOx is sent into the furnace of the combustor to decompose a part of NOx into N.sub.2 and O.sub.2 under an interfurnace combustion atmosphere.

REFERENCES:
patent: 3674429 (1972-07-01), Collins
patent: 4548799 (1989-10-01), Knoblauch et al.
patent: 4964889 (1990-10-01), Chao

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