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International Journal of Energy for a Clean Environment

Publication de 8  numéros par an

ISSN Imprimer: 2150-3621

ISSN En ligne: 2150-363X

SJR: 0.597 SNIP: 1.456 CiteScore™:: 3.7 H-Index: 18

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DEVELOPMENT OF A LOW-NOx SWIRL BURNER FOR GASEOUS FUELS

Volume 7, Numéro 3, 2006, pp. 203-220
DOI: 10.1615/InterJEnerCleanEnv.v7.i3.20
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RÉSUMÉ

A research and development project has resulted in a new low-NOx, fan-driven burner concept called the Swirl Burner. This patented concept is in the final stages of development. The Swirl Burner is a partially premixed, fan-driven gas burner with internal flue gas recirculation and possibilities for staged fuel and air supply. Gas mixing and flame stabilization are provided by a swirl-generating device with aerodynamically shaped wanes positioned in an annular airflow. Flue gas is recirculated into the combustion zone, providing a continuous ignition source. NOx emissions in the range 30−40 ppmvd at 3% O2 are measured for 100-200 kW with propane. Using methane as fuel, NOx emissions of about 20 ppmvd at 3% O2 are measured for 75−200 kW. CO emissions were kept below about 5 ppmvd. NOx and CO emissions were fairly constant over a wide range of fuel-air ratios. Similar results have also been obtained for a 20-kW burner and a 500-kW burner. In this article a detailed characterization of the 200-kW Swirl Burner and the experimental results will be presented.

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