Fuel conversion to reduce NOx

Key challenges

To convert the boiler from coal slurry firing to natural gas firing and reduce NOx emissions to <15ppm at 3.5% O2 with up to 30% FGR.

RJM Solution

Site Survey, followed by full design and engineering of the new burner, plus new windbox. Also, review of the gas train, FD fan and FGR fan designs and CFD combustion modelling to mitigate burner flame interactions. RJM manufactured and supplied two complete burner assemblies and two complete gas igniter systems, including various ancillary components.

Results

This district heating plant has been successfully converted to gas and is now meeting the 15ppm NOx thresholds set by the China Clean Air Act.