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Show Full-Size Charncterization of Low-NOx Burner Coal Nozzle Mixing Devices in a 100 l\1BtuIhr Research Facility Hamid Sruv* Babcock and Wilcox Research and Development Division Alliance,OH and Albert D. LaRue Babcock and Wilcox Fossil Power Division Barberton, OH 1995 AFRC International Symposium Monterey, CA ABSTRAcr Reduction of unburned carbon levels for coal burning power plants that are equipped with 10w-NOx burners decreases fuel costs, and facilitates fly ash recycling and disposal. For this purpose, Babcock and Wilcox (B& W) has developed a proprietary coal nozzle mixing device to install in commerciallow-NOx pulverized coal (PC) burners. Combustion and emissions performance of a full-size, 100 million Btulhr (MBtuIhr), DRB-XCL ® 10w-NOx PC burner and the proprietary device was characterized in the Clean Environment Development Facility at B&W with four different fuels ranging from subbituminous to low volatile bituminous coals. Experimental parameters included coal fineness, excess air, and thermal load. Relative to the baseline 10w-NOx burner, the coal nozzle device produced shorter flames and lower unburned carbon levels, while maintaining low NOx emissions. Retrofit plans for commercial installations are underway. * Author of correspondence 1 5- |