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Emission abatement systems for Combined Heat and Power (CHP) plants


The main pollutants emitted from a CHP plant include:

  • Nitrogen Oxides (NOx)
  • Sulphur dioxide (SO2)
  • Chlorides (HCl)
  • CO 
  • Particulate matter (fly ash).

With a reasonable fuel quality, all pollutants except particulate matter can most often be contained within emission limits by primary combustion methods.

Fly ash reduction is typically achieved by application of baghouse filter or Electrostatic Precipitation (ESP) technology, which may be combined with reactant injection should other acidic compounds (e.g. SO2, HCl) need to be further reduced.

Selective Non-Catalytic Reduction of NOx by injection of an ammonia reactant in the boiler is an option to reach lower NOx emission.


 

 
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