Journal
APPLIED ENERGY
Volume 111, Issue -, Pages 240-246Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.apenergy.2013.05.009
Keywords
Flameless combustion; Mild combustion; Oxygen enrichment; Self-regenerative burner
Categories
Funding
- Colciencias [355-2008]
- University of Antioquia
Ask authors/readers for more resources
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 (similar to 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 degrees C. The results showed that for all oxygen enrichment rates it was possible to obtain the flameless combustion phenomena with its typical features, like no luminous effect, wide reaction zone and uniform temperature profile. A temperature peak of 1034 degrees C was measured for the operation with oxygen enriched air (35% O-2) compared to 975 degrees C when normal air (21% O-2) was used. NOx emissions were below 5 ppm and the global efficiency increased almost 5% for an oxygen enriched level of 30%. Some comparisons to the burner operating without oxygen enrichment in conventional and flameless mode are presented to highlight the advantages of oxygen enhanced flameless combustion (OEFC) using self-regenerative burners. (C) 2013 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available