Method for reducing nitrous oxide in gases and corresponding...

Details Method for reducing nitrous oxide in gases and corresponding... Method for reducing nitrous oxide in gases and corresponding...

B - Operations, Transporting

01

D

B01D 53/86 (2006.01) B01J 21/04 (2006.01) B01J 21/06 (2006.01) C01B 21/02 (2006.01) C01B 21/24 (2006.01)

Patent

CA 2299562

The invention concerns a method which consists in selectively destroying nitrous oxide at high temperature on catalysts consisting of refractory oxide agglomerates (alumina or zirconium) having intergranular porosity impregnated with a zirconium salt. The method is useful for treating gases in workshops producing nitric acid. The invention is also useful, using specific initiators, for treating gases rich in N¿2?O produced in nitric oxidation of organic compounds.

On provoque la destruction sélective du protoxyde d'azote à haute température sur catalyseurs constitués d'agglomérés d'oxydes réfractaires (alumine ou zircone) possédant une porosité intergranulaire imprégnés d'un sel de zirconium. Le procédé s'applique au traitement des gaz des ateliers de production d'acide nitrique. Il est également applicable, moyennant dispositifs d'amorçage, au traitement des gaz riches en N2O produits dans les oxydations nitriques de composés organiques.

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