Combustion and fuel characterization of coal-water fuels

Technical Report · Wed Feb 01 04:00:00 EST 1989

DOI:https://doi.org/10.2172/6778092· OSTI ID:6778092

Chow, O K; Gralton, G W; Lachowicz, Y V; Laflesh, R C; Levasseur, A A; Liljedahl, G N

This five-year research project was established to provide sufficient data on coal-water fuel (CWF) chemical, physical, and combustion properties to assess the potential for commercial firing in furnaces designed for gas or oil firing. Extensive laboratory testing was performed at bench-scale, pilot-scale (4 {times} 10{sup 6}Btu/hr) and commercial-scale (25 {times} 10{sup 6} to 50 {times} 10{sup 6}Btu/hr) on a cross-section of CWFs. Fuel performance characteristics were assessed with respect to coal properties, level of coal beneficiation, and slurry formulation. The performance of four generic burner designs was also assessed. Boiler performance design models were applied to analyze the impacts associated with conversion of seven different generic unit designs to CWF firing. Equipment modifications, operating limitations, and retrofit costs were determined for each design when utilizing several CWFs. Unit performance analyses showed significantly better load capacity for utility and industrial boilers as the CWF feed coal ash content is reduced to 5% or 2.6%. In general, utility units had more attractive capacity limits and retrofit costs than the industrial boilers and process heaters studied. Economic analyses indicated that conversion to CWF firing generally becomes feasible when differential fuel costs are above $1.00/10{sup 6}Btu. 60 figs., 24 tabs.

• Research Organization: Combustion Engineering, Inc., Windsor, CT (USA)
• Sponsoring Organization: DOE/FE
• DOE Contract Number: AC22-82PC50271
• OSTI ID: 6778092
• Report Number(s): DOE/PC/50271-T3-Vol.1; ON: DE91000992
• 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
ASH CONTENT
ATOMIZATION
BURNERS
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
COAL
COMBUSTION
COMMERCIALIZATION
DESIGN
DISPERSIONS
DOCUMENT TYPES
ECONOMIC ANALYSIS
ECONOMICS
ELECTRIC UTILITIES
EMISSION
ENERGY SOURCES
FOSSIL FUELS
FUEL SLURRIES
FUELS
HYDROGEN COMPOUNDS
LOAD ANALYSIS
MATERIALS
MIXTURES
OXIDATION
OXYGEN COMPOUNDS
PERFORMANCE TESTING
POLLUTANTS
PROGRESS REPORT
PUBLIC UTILITIES
RHEOLOGY
SLURRIES
SUSPENSIONS
TESTING
THERMOCHEMICAL PROCESSES
WATER