TRGX Flameless Regenerative Burners
By combining flameless combustion with regenerative technology, our TRGX burners provide state-of-the-art performance in terms of both excellent combustion efficiency and the reduction of CO2 and NOx emissions.
Overview
TRGX burners represent the most advanced solution in terms of industrial burners. Each burner is equipped with a separated regenerator (ceramic solid bed) or with an integrated regenerator (ceramic honeycomb) that is capable of providing very intense combustion air preheating. The ceramic balls in the separated regenerator have a strong resistance to harsh environments and provide simple, fast and cheap maintenance.
Due to the high thermal capacity and specific surface of the regenerators, combustion air can be preheated at about 100° C below the furnace temperature, thus providing a relevant increment in fuel efficiency at any operating condition.
Furthermore, in order to limit thermal NOx formation, their operation is based on flameless combustion. Thanks to the coupled fuel and air staging, NOx emissions are brought down to very low levels. The TRGX burners work in two successive phases: at first the burner recovers heat from flue gases by passing them inside the regenerator. Then, the burner is switched in firing phase and the air passes through the hot regenerator and it is preheated before being injected inside the furnace.
Technical Data
Main technical features:
- Very high air preheating efficiency due to both high thermal capacity and specific surface of the regenerators
- Compatible with separated regenerators (ceramic solid bed) and with integrated regenerators (ceramic honeycomb).
- Standard burner efficiency at 80%-90% (when using a flue gases recirculation factor around 0.8)
- Flame and flameless operations
- Cold air start-up (flame mode only with furnace temperature below self-ignition)
- Low NOx emissions
- Increased production in existing furnaces and reduced dimensions for new furnaces
- Equipped with pilot burner and UV detector, if required
- High flame stability and operation security at low working temperature
Fuels: Natural Gas, COG, Lean Mixed Gas, Mixed Gas (and hydrogen mixtures of them).
Turn down:
- flame mode: 10%-100%
- flameless mode: 50%-100%
Innovation
Excellent fuel efficiency and reduction of CO2 and NOx emissions by combination of flameless and regenerative technologies.
CFD simulation of the TRGX burner allows to tune the length of the hot reaction region in flameless mode during the design phase. (top image)
CFD simulation of the TRGX burner with velocity field. (bottom Image)
Environment
70 mg/Nm3 @ 3% O2 for Natural Gas
The emissions are referred to these operating conditions:
- Air excess 5%
- Air temperature less than or equal to 1000°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 case by case according to furnace type and working conditions.
Experimental data showing the thermal efficiency of the separated regenerator in terms of temperature of preheated air and exhaust gas temperature. (top chart)
NOx emission variation of TRGX burner with burner load and oxygen excess in flue gases. (bottom chart)
Related Solutions
