Demonstration of B and W 100-MBtu/h burner for coal-water slurry. Final report

Technical Report · Mon Sep 01 04:00:00 EDT 1986

OSTI ID:5180126

Farthing, G A; Markert, D H

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

Related Subjects

01 COAL, LIGNITE, AND PEAT
010600 -- Coal
Lignite
& Peat-- Properties & Composition
014000* -- Coal
Lignite
& Peat-- Combustion
02 PETROLEUM
023000 -- Petroleum-- Properties & Composition
025000 -- Petroleum-- Combustion
42 ENGINEERING
421000 -- Engineering-- Combustion Systems
AIR
ATOMIZATION
BITUMINOUS COAL
BLACK COAL
BURNERS
CALORIFIC VALUE
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHEMICAL REACTIONS
COAL
COMBUSTION
COMBUSTION PROPERTIES
DATA
DENSITY
DESIGN
DISPERSIONS
DROPLETS
ENERGY SOURCES
EXPERIMENTAL DATA
FLUIDS
FOSSIL FUELS
FUEL OILS
FUEL SLURRIES
FUEL-AIR RATIO
FUELS
GASES
HYDROGEN COMPOUNDS
INFORMATION
LIQUID FUELS
MATERIALS
MIXTURES
NITRIC OXIDE
NITROGEN COMPOUNDS
NITROGEN OXIDES
NUMERICAL DATA
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PARTICLES
PERFORMANCE TESTING
PETROLEUM PRODUCTS
PHYSICAL PROPERTIES
SLURRIES
STEAM
SUSPENSIONS
TESTING
THERMOCHEMICAL PROCESSES
VISCOSITY
WATER