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Title	Low NOx Production Through Lean Premixed Combustion
Creator	Johnson, M. R.; Cheng, R. K.; Kostiuk, L. W.
Publisher	Digitized by J. Willard Marriott Library, University of Utah
Date	1994
Spatial Coverage	presented at Kingston, Canada
Abstract	An approach using fuel lean premixed combustion is being explored in an attempt to reduce NOx emissions from high temperature gas phase burners. Lean premixed flames have product gas temperatures much lower than stoichiometric, fuel rich, or diffusion flames and as a results produce less NOx. The historical difficulty in the practical use of lean premixed combustion has been the very narrow stability limits exhibited by these flames and are susceptible to blow-off. This paper is a preliminary exploration of novel and simple methods to increase the stability limits of these flames. The method employed here is ti use a ring stabilizer that can anchor flames aerodynamically over a wide range of both laminar and turbulent conditions. Results show that this method permits flames to be stabilized down to an equivalence ratio of 0.5 and at flow rates up to eight times greater than those of standard burners. The ring stabilized flames are also insensitive to turbulence in the reactant flow. These results allow the use of lean premixed flames with their low NOx emissions to be considered for commercial and industrial burners.
Type	Text
Format	application/pdf
Language	eng
Rights	This material may be protected by copyright. Permission required for use in any form. For further information please contact the American Flame Research Committee.
Conversion Specifications	Original scanned with Canon EOS-1Ds Mark II, 16.7 megapixel digital camera and saved as 400 ppi uncompressed TIFF, 16 bit depth.
Scanning Technician	Cliodhna Davis
ARK	ark:/87278/s6zk5k74
Setname	uu_afrc
ID	8896
Reference URL	https://collections.lib.utah.edu/ark:/87278/s6zk5k74

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Title	Page 10
Format	application/pdf
OCR Text	Show 1. Gas Research Institute Publication, Low NOx - Burners for Industrial Applications, Gas Research Institute, Chicago. 2. 1. Glassman,. Combustion, Second Edition, Academic Press, Orlando, Florida, 1987. 3. National Energy Board, Canadian Energy Supply and Demand 1990-2010, Government of Canada Publication, June 1991. 4. Environment Canada, Canadian Emissions Inventory of Common Air Contaminants (1985), Environmental Protection Series, Report EPS 5/ AP/3, March 1993. 5. Kostiuk, L.W. and Cheng, R.K., Apparatus and Methodfor Burning Lean Premixed Fuel/Air Mixtures with Low NOx Emissions, U.S. Patent Application Serial No. 08/147,380, 1993. 6. Lewis, B. and von Elbe, G., Combustion, Flames and Explosions of Gases, Third Edition,Academic Press, Orlando, Florida, 1987. 7. Williams, G.C., Hottel, H.C. and Scurlock, A.C., Third Symposium on Combustion, Flame and Explosion Phenomena, Williams and Wilkins, p.21, 1949. 8. Wilkerson, E.C. and Fenn, lB., Fourth Symposium (International) on Combustion, Williams and Wilkins, p.749, 1953. 9. Wright, F.H. and Zukoski, E.E., Eighth Symposium (International) on Combustion, Williams and Wilkins, p.933, 1962. 10. Cheng, R.K., amd Ng, T.T., Combust. Flame 57:155, 1991. 11. Cheng, R.K and Shepherd, 1.G.,Combust. Flame 85:7, 1991. 12. Miles, P.C. and Gouldin, F.C., Twenty-Fourth Symposium (International) on Combustion, The Combustion Institute, Pittsburgh, 1992. 13.Kostiuk, L.W., Zhou, L. and Cheng, R.K., Proceedings of the Second Intenational Microgravity Combustion Workshop. Cleveland, Ohio, p. 183, Sept., 1992.
Setname	uu_afrc
ID	8886
Reference URL	https://collections.lib.utah.edu/ark:/87278/s6zk5k74/8886