Self-regenerative burner

Experimental and numerical study of the effect of water injection into the reaction zone of a flameless combustion furnace

The effect of water injection on the stability and emissions of a flameless combustion regime was evaluated. Flameless combustion operation was studied without self-regeneration, with self- regeneration, and with combustion air oxygen enrichment. For each case, increasing water flows were injected until the combustion regime was unstable. The evaluation criteria were temperature uniformity and pollutant emissions of species such as carbon monoxide and nitrogen oxide.

Experimental evaluation of a 20 kW oxygen enhanced self-regenerative burner operated in flameless combustion mode

Results are presented on the effects of oxygen enrichment on the performance of a flameless combustion furnace equipped with a regenerative burner. Natural gas was used as fuel (∼97% CH4) and the oxygen concentration in the combustion air was varied from 21% to 35% (volumetric percent). The influence of oxygen enrichment on temperature and species profiles, pollutant emissions, thermal efficiency and regenerators effectiveness was quantified; measures were registered under steady state conditions for average wall temperatures of 880 °C.

Numerical simulation of the flow streams behavior in a self-regenerative crucible furnace

This paper presents a three dimensional numerical simulation with experimental validation of a gas-fired self-regenerative crucible furnace. Turbulence, radiation and chemical reactions are simulated using the software Gambit V2 and Fluent V6.2. Different combustion models are used to assess their effects on the numerical results. Aerodynamics, temperature fields, species profiles and emissions are compared with the experimental data.