Direct oxygen injection in nitric acid production

Details Direct oxygen injection in nitric acid production Direct oxygen injection in nitric acid production

C - Chemistry, Metallurgy

01

B

C01B 21/38 (2006.01) C01B 21/26 (2006.01)

Patent

CA 2205788

Oxygen which is in addition to oxygen from air is injected into a nitric acid production process such that the total amount of additional oxygen injected is distributed between the bleacher and the cooler/condenser train. This process results in reduced oxygen requirements for increasing production, increasing acid strength and decreasing NOx emissions.

De l'oxygène s'ajoutant à l'oxygène de l'air est injecté dans un système de production d'acide nitrique, de telle façon que la quantité totale d'oxygène supplémentaire injectée soit distribuée entre l'agent de blanchiment et le train de refroidissement/condensation. Ce procédé permet de réduire les besoins en oxygène tout en augmentant la production et la force de l'acide et en diminuant les émissions de NOx.

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