Process Description
Ammonia Oxidation - at a pressure level of 34 to 29 PSIG.
Ammonia and air, free from dust and oil, are mixed. The mixture of air and ammonia is introduced in a burner and dispersed over
the platinum alloy catalyst gauze.
The velocity of the air/ammonia mixture is such as it assures the necessary turbulence for obtaining the most complete diffusion of
gases possible on the catalyst, and a sufficient contact time to favor the production of nitrogen oxide.
Ammonia oxidation makes nitrogen oxide in contact with catalyst gauzes. It has been proposed that the catalyst operates as follows:
- Surface absorption of oxygen by the catalyst.
- Catalytic reaction of ammonia, perhaps by the hydroxylamine stage, to form the imide radical NH on the catalyst surface.
- Molecular oxygen reaction with the imide to produce nitrogen oxide and water.
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