Proceedings of the Korean Society of Propulsion Engineers Conference (한국추진공학회:학술대회논문집)
- 2004.03a
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- Pages.449-452
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- 2004
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- 1975-342X(pISSN)
NOx Emissions in Flameless Combustion of Kerosene-Air Mixture Jets Injected into Hot Burned Gas Stream from Combustion Wall
- Aida, Naoki (Faculty of Engineering, Hosei University) ;
- Hayashi, Shigeru (Japan Aerospace Exploration Agency) ;
- Yamada, Hideshi (Japan Aerospace Exploration Agency) ;
- Kawakami, Tadashige (Faculty of Engineering, Hosei University)
- Published : 2004.03.01
Abstract
“Flameless combustion” of lean to ultra lean mixtures, supported by high-temperature burned gas, can resolve the dilemma between complete combustion versus ultra-low NOx emissions in gas turbine combustors. The characteristics of NOx emissions and combustion in “lean-lean” two-stage combustion were investigated for fuel vapor and droplets / air mixture jets injected from the main injection tube that was placed perpendicular to the combustor wall into the primary hot burned gas prepared by combustion of lean mixtures on a perforated flame holder. The present results clearly show that the ultra-low NOx combustion supported by the reaction of lean mixtures well mixed with the hot burned gas from the primary stage is much more advantageous in achieving ultra-low NOx emissions while maintaining high combustion efficiency.