Ammonia oxidation catalyst for the coal fired utilities

Details Ammonia oxidation catalyst for the coal fired utilities Ammonia oxidation catalyst for the coal fired utilities

2008-07-01

2008-07-01

Vanoy, Timothy C. (Department: 1793)

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Nitrogen or nitrogenous component

C423S239100

Reexamination Certificate

active

11058822

ABSTRACT:
A process is described that removes by oxidation the excess ammonia (NH3) gas from flue gases that have been subjected to selective catalytic reduction (SCR) of oxides of nitrogen (NOx) by ammonia injection. The inventive process incorporates a secondary catalyst of precious metal and vanadia on a metal oxide such as titania to catalyze the oxidation of both ammonia and carbon monoxide (CO) while maintaining sulfur dioxide (SO2) levels.

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