Demonstration of B and W 100-MBtu/h burner for coal-water slurry. Final report
The Babcock and Wilcox Co. (B and W), under contract to the Electric Power Research Institute, has completed performance testing of its 100-MBtu/h coal-water-slurry-fuel (CWSF) burner. The objective of the testing was to demonstrate that full-scale CWSF burners are commercially available for CWSF boiler retrofits. The 100-MBtu/h, multiple-fuel (CWSF, oil, and gas) burner tested was a direct scale-up of a 40-MBtu/h burner developed by B and W through extensive combustion trials in an oil- and gas-designed package boiler. The CWSF was produced from a high-volatile, eastern bituminous coal (containing 70% and 4% by weight, respectively, of coal and ash) and had a higher heating value of 10,270 Btu/lb. Approximately 500 tons of CWSF were consumed during the tests. Burner performance was good during combustion trials with all three main fuels. Full-load CWSF tests indicated that 99%+ carbon conversion efficiency could be achieved with 15% excess air, 300/sup 0/F combustion air preheat, steam atomization (0.15 pound of steam per pound of CWSF), and a burner draft loss of 6 inches (water column). Nitric oxide emissions under these conditions were a very low 233 ppM (at 3% oxygen). With 600/sup 0/F combustion air preheat, the burner could be turned down 4:1 with air atomization and 3:1 with steam atomization. A 12:1 turndown ratio was achieved during firing of No. 6 fuel oil using the CWSF burner and atomizer. Results indicate that the burner is ready for commercial application. 14 refs., 27 figs., 10 tabs.
- Research Organization:
- Babcock and Wilcox Co., Alliance, OH (USA). Research and Development Div.
- OSTI ID:
- 5180126
- Report Number(s):
- EPRI-CS-4809; ON: TI87920004
- Country of Publication:
- United States
- Language:
- English
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42 ENGINEERING
02 PETROLEUM
BITUMINOUS COAL
CALORIFIC VALUE
BURNERS
DESIGN
PERFORMANCE TESTING
FUEL OILS
COMBUSTION
DENSITY
VISCOSITY
FUEL SLURRIES
AIR
ATOMIZATION
DROPLETS
EXPERIMENTAL DATA
FUEL-AIR RATIO
MIXTURES
NITRIC OXIDE
STEAM
WATER
BLACK COAL
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHEMICAL REACTIONS
COAL
COMBUSTION PROPERTIES
DATA
DISPERSIONS
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUELS
GASES
HYDROGEN COMPOUNDS
INFORMATION
LIQUID FUELS
MATERIALS
NITROGEN COMPOUNDS
NITROGEN OXIDES
NUMERICAL DATA
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PARTICLES
PETROLEUM PRODUCTS
PHYSICAL PROPERTIES
SLURRIES
SUSPENSIONS
TESTING
THERMOCHEMICAL PROCESSES
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