|Full-Size Characterization of Low-NOx Burner Coal Nozzle Mixing Devices in a 100 MBtu/hr Research Facility
|Sarv, Hamid; LaRue, Albert D.
|Digitized by J. Willard Marriott Library, University of Utah
|presented at Monterey, California
|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 commercial low-NOx pulverized coal (PC) burners. Combustion and emissions performance of a full-size, 100 million Btu/hr (MBtu/hr), 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.
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|Original scanned with Canon EOS-1Ds Mark II, 16.7 megapixel digital camera and saved as 400 ppi uncompressed TIFF, 16 bit depth.