Method and apparatus for reducing a nitrogen oxide, and control thereof
First Claim
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1. An apparatus for reducing a nitrogen oxide gas emitted by a emissions source, comprising (a) an exhaust conduit for transporting the nitrogen oxide gas downstream from the emissions source, (b) an injector for injecting a reducing agent into the conduit, and (c) one or more gas analyzers located in the conduit upstream from the injector.
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Abstract
Disclosed herein is a method and apparatus for reducing a nitrogen oxide, and the control thereof.
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Citations
51 Claims
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1. An apparatus for reducing a nitrogen oxide gas emitted by a emissions source, comprising
(a) an exhaust conduit for transporting the nitrogen oxide gas downstream from the emissions source, (b) an injector for injecting a reducing agent into the conduit, and (c) one or more gas analyzers located in the conduit upstream from the injector.
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20. In a multi-component gas mixture that is emitted by a emissions source and contains a nitrogen oxide, wherein a nitrogen oxide is reduced by injecting a reducing agent into the gas mixture, a method of decreasing the amount or release of unreacted reducing agent comprising
determining information as to the compositional content of the gas mixture, and controlling the injection of the reducing agent in relation to the information as to the compositional content of the gas mixture.
Specification