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Title	Reburning Scale-Up Methodology for NOx Control From Cyclone Boilers
Creator	Farzan, H.; Wessel, R. A.; Sarv, H.; Kim, R. K.; Rodgers, L. W.; Maringo, G. J.; Yagiela, A. S.
Publisher	Digitized by J. Willard Marriott Library, University of Utah
Date	1991
Spatial Coverage	presented at Honolulu, Hawaii
Abstract	There are currently no commercially demonstrated combustion modification techniques for cyclone boilers which reduce NOx emissions. The emerging reburning technology offers cyclone boiler owners a promising alternative to expensive flue gas cleanup techniques for NOx emission reduction. Reburning involves the injection of a supplemental fuel (natural gas, oil, or coal) into the main furnace in order to produce locally reducing conditions which convert NOx produced in the main combustion zone to molecular nitrogen, thereby reducing overall NOx emissions. After obtaining encouraging results from engineering feasibility and pilot-scale proof of concept studies (1)(2), Babcock & Wilcox is presently performing a U.S. Department of Energy Clean Coal II project to demonstrate the cyclone coal reburning technology on a full-size utility boiler. The host site for the demonstration is the Wisconsin Power & Light's 100-MWe Nelson Dewey Station. This paper describes the scale-up methodology from a 6-million Btu/hr pilot-scale facility to the Nelson Dewey station. This methodology involves: • pilot-scale evaluation with the demonstration coal • baseline measurements at the host site boiler, including velocity and temperature profiles, combustion, and emissions characterization • mixing optimization utilizing physical and numerical modeling
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Format	application/pdf
Language	eng
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Reference URL	https://collections.lib.utah.edu/ark:/87278/s65q4znx

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OCR Text	Show FULL-SCALE RETROFIT SCHEDULE The final design/fabrication of the rebuming system is presently being performed and is scheduled to be in operation by November 1991. The demonstration will involve short-term parametric tests and long-term performance tests. ACKNOWLEDGMENTS The authors extend their appreciation to the following for their help in the management and performance of this study: • R. J. Newell, Supervisor of Plant Performance - WP&L • J. M. Campbell, Plant Manager - Nelson Dewey Station • S. Gebhart, Power Plant Engineer - WP&L • R. W. Corbett, Technical Project Manager - U. S. DepanlnentofEnergy • G. B. Watson - B&W • V. M. Belovich - B& W • J. A. Rogers - B&W • V. E. Burgess, M. Licht, and E. W. Stoffer - B&W REFERENCES 1. G. 1. Maringo, et al., "Feasibility of Rebuming for Cyclone Boiler NOx Control," EP A/EPRI Joint Symposium on Stationary Combustion NOx Control, New Orleans, Louisiana, March 23-27, 1987. 2. H. Farzan, et aI., "Pilot Evaluation of Rebuming Cyclone Boiler NOx Control," EP A/EPRI Joint Symposium on Stationary Combustion NOx Control, San Francisco, California, March 6-9, 1989. 3. McCarthy, et aI., "Pilot-Scale Studies of the Application of Rebuming for NOx Control," EPA/EPRI Joint Symposium on Stationary Combustion NOx Control, New Orleans, Louisiana, March 23-27, 1987. 13 4. A. S. Yagiela, et al., "Update On Coal Reburning Technology for Reducing NOx in Cyclone Boilers," EPA/EPRI Joint Symposium on Stationary Combustion NOx Control, Washington D.C., March 25 -28, 1991. 5. W. A. Fiveland and R. A. Wessel, "Numerical Model for Predicting Performance of Three-Dimensional Pulverized-Fuel Fired Furnaces," ASME Paper No. 86-HT -35, Joint AIAA/ ASME Thermophysics and Heat Transfer Conference, Boston, Massachusetts, June 2-4, 1986. LEGAL NOTICE The Babcock & Wilcox Company (B&W) pursuant to a cooperative agreement partially funded by the U.S. Depanlnent of Energy (DOE) and a grant agreement with IDENR for the DOE and IDENR and neither B&W, DOE, IDENR, nor Southern Illinois University at Carbondale, nor any person acting on their behalf: a. Makes any warranty or representation, express or implied, with respect to the accuracy, completeness, or usefulness of the information contained in this paper, or that the use of any information, apparatus, method, or process disclosed in this paper may not infringe private-owned rights; nor b. Assumes any liabilities with respect to the use of, or for damages resulting from the use of, any information, apparatus, method, or process disclosed in this paper. Reference herein to any specific commercial product, process, or service by tradename, trademark, manufacture, or otherwise, does not necessarily constitute or imply its endorsement, recommendation, or favoring by DOE. The views and opinions of the authors expressed herein do not necessarily state or reflect those of DOE.
Setname	uu_afrc
ID	7007
Reference URL	https://collections.lib.utah.edu/ark:/87278/s65q4znx/7007