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OMA NOx Analyzer

Article: 00091898

Process gas analyzer / NO / NO2 / ammonia

Application Summary

Analytes: NO, NO2, NOX(sum of NO + NO2), NH3
Process Stream: DeNOX outlet stream

Introduction

DeNOX is the conversion of NO and NO2
?two hazardous nitrogen oxides known generically as NOX
?to nitrogen and water. Plants are required to run this process in order to restrict NOX emissions below allowable limits.

The efficiency and operational cost of this process hinge heavily on adequate process monitoring, specifically measurement of NOX and ammonia slip downstream from the reaction.

The OMA continuously measures the concentrations of NH3 and NOX in the outlet gas downstream from DeNOX in order
to keep a vigilant watch on NOX reduction efficiency, catalyst problems, excess/insufficient ammonia injection, and potential maintenance issues from ammonium bisulfate formation.

Specifications

  • Measured value: process gas
  • Gas type: NO, NO2, ammonia, nitrogen, NOx
  • Technology: UV
  • Domain: process
  • Other characteristics: online, continuous, automatic

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