TRN Diluted Flame Roof Burners
Diluted Flame Radiant Roof Burners are special low-NOx radiant roof burners. Their operation provides low NOx emission levels as compared to more traditional radiant roof burners.
Overview
Similar to our baseline roof burners, TRN burners guarantee a high efficiency heat exchange between furnace and charge.
The TRN burner belongs to the low-NOx Tenova burners family that improves environmental emissions with respect to the baseline TR burners. Installed on the roof of the furnace, the TRN burner creates a high efficiency heat exchange between furnace and charge due to the high turbulence of the flame. In order to uniformly distribute the waste gases, two different types of radiant burners are installed: one with the flame rotating in a clockwise direction and the other in a counter-clockwise direction.
Technical Data
Main technical features:
- Low NOx emissions
- Very low CO emissions (below 5 ppm)
- Maximum fuel efficiency: low excess air operations
- Extended turn down in flameless mode
Fuels: Natural Gas, COG, LPG (and hydrogen mixtures of them).
Turn down: 10%-100%.
Innovation
A special flame design is required to achieve a highly uniform heat distribution and intense heat flux with a high turbulence intensity.
CFD simulation is used to optimize NOx emissions from TRN burners.
Environment
60 ppm @ 3% O2 for Natural Gas
75 ppm @ 3% O2 for COG (*)
The emissions are referred to these operating conditions:
- Air excess: 5% (Natural Gas ), 7% (COG)
- Air temperature less than or equal to 450°C
- Furnace temperature less than or equal to 1250°C
- Burner load á 80%
The reported value is the expected one. The guaranteed value will be fixed on a case-by-case basis according to the furnace type and the operating conditions.
(*) The emission values are subject to variation according to specific fuel analysis (fuel NOx).
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