Flue Gas Recirculation Systems

Key features

RJM uses FGR or induced FGR (iFGR) systems to take hot flue gases from the existing GR fan outlet and introduce them into the existing FD fan inlet. When combined with new ultra-low NOx burners and other modifications, an FGR system can help deliver a reduction in NOx levels to below 100mg/Nm3 at 3% O2 dry.

Outstanding performance

  • Powerful NOx reduction technology for gas fired systems – >70% NOx reduction if combined with RJM ultra-low NOx burners
  • Deployed to lower flame temperatures and reduce creation of thermal NOx
  • Typically combined with other NOx reduction measures
  • Proven track record with FGR across all boiler configurations
  • Cost-effective NOx reduction technology
  • Induced FGR or Forced FGR depending on the draught plant design

Plant applications

  • AES Ballylumford. iFGR system installed with new RJM ultra-low NOx gas burners, delivering NOx levels to below 100mg/Nm3
  • Numerous district heating plants in Beijing. NOx reduced to <15ppm consistently across the heat output range with FGR systems designed by RJM