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Show Exhaust results from Configurations B through D show that large NO reduction are indeed possible under overall fuel lean, diffusion flame conditions. This is important, and suggests that significant NO destruction during reburning may be achieved, without having to require a uniform, hostile, reducing environment throughout anyone zone in a boiler. However, a heared Burke Schumann[14] type of flamelet would destroy NO more effectively than a typical stretc ed flamelet. Furtherwork is needed to explore practical ways of accomplishing this in a furnace. ACKNOWLEDGEMENTS This work was supported by the Exploratory Research Program of the Electric Power Research Institute (EPRI) , under Contract No RP8005-16. The assistance of Mr. Anthony Facchiano, Mr. Angelos Kokkinos and Dr. John Maulbetsch, of EPRI, is much appreciated. REFERENCES [1] Wendt, J.O.L., Sternling, C. V. and Matovich, M.A., Founeenth Symposium (International) on Combustion, p. 897, The Combustion Institute, 1973. [2] Folsom, B. A., Sommer, T. M. and Payne, R., Demonstration of Combined NOx and SO! Emission Control Technologies Involving Gas Rebuming, Paper No. 16, AFRCJFRC International Conference on Environmental Control of Combustion Processes, Honolulu, Hawaii, October 7-10, 1991. [3] Mereb, J.B., and Wendt, J.O.L. Twenty-Third Symposium (International) on Combustion, pp 1273-1280, The Combustion Institute, Pittsburgh, PA, 1990. [4] Mereb, J.B. Nitrogen Oxide Abatement by Distributed Fuel Addition, Ph.D. Dissertation, The University of Arizona, available from University Microfilms, Ann Arbor, MI (1991). [5] Peters, N, Twenty-First Symposium (International) on Combustion, p 1231, The Combustion Institute, Pittsburgh, PA. 1986. [6] Corley, T.L. and Wendt, J.O.L. Computational Aspects of the Numerical Analysis of Laminar Opposed Jet Diffusion Flame, Western States Section-Combustion Institute Meeting, Davis, California, October 1985. [7] Krishnamurthy, L., and Williams, F.A., Acta Astranautica, 1,711 (1974). [8] Seshadri, K., and Williams, F.A., Int. J. Heat Mass Transfer, 21,251 (1978). [9] Hahn, W. A., Wendt, J. O. L., and Tyson, T. J., Combust. Sci. and Tech no I. , 27,1-17 (1981). |