Coal slurry transportation alternatives: Conceptual design and economics: Final report
The Coal Slurry Transportation Alternatives study provides utilities with a decisionmaking tool and necessary cost data to facilitate a systematic and rigorous comparison of slurry, rail, and barge transportation from the mine to the busbar for coal deliveries to both existing and new power plants. Volume 3 summarizes the methodology and results of examining operating and cost differences between slurry and run-of-mine coal. Two objectives of the study are to document the engineering costs and assumptions of the coal slurry pipeline system and to provide comparative estimates of costs and performance for power generation from slurry pipeline and run-of-mine coal. The results indicate that an increase in fuel moisture causes a decrease in boiler efficiency; that is, higher fuel burn rates and higher gas flows. For new plants, major equipment must be sized to accommodate higher fuel, ash, and flue gas flow rates associated with coal slurry. Other impacts include higher auxiliary power requirements, increased scrubber additive requirements, and potential increases in plant maintenance. For existing plants, a more serious concern may be the capability of current fuel transport systems to properly dry and transport the fuel. Flue gas flow rates for slurry should be within the design margins of run-of-mine, but where flue gas flow rates are increased, downstream FGD and particulate removal equipment may be impacted. Of the total levelized busbar costs for new plants, approximately 40 percent of differential costs are associated with capital, with the remaining 60 percent associated with consumables. For existing plants, replacement power costs due to limitations in fuel drying and conveyance may be up to 20 percent of the total generation cost. 40 figs., 62 tabs.
- Research Organization:
- Dames and Moore, Bethesda, MD (USA); Electric Power Research Inst., Palo Alto, CA (USA)
- OSTI ID:
- 6356099
- Report Number(s):
- EPRI-CS/P-5292; ON: TI87920549
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
20 FOSSIL-FUELED POWER PLANTS
BOILERS
EFFICIENCY
COAL
TRANSPORT
FUEL SLURRIES
WATER REMOVAL
POWER GENERATION
COST
COMPARATIVE EVALUATIONS
ECONOMIC ANALYSIS
AUXILIARY SYSTEMS
BARGES
BELT CONVEYORS
ELECTRIC UTILITIES
ENGINEERING
MATERIALS HANDLING
PUMPS
RAIL TRANSPORT
SIZE
SLURRY PIPELINES
CARBONACEOUS MATERIALS
CONVEYORS
DISPERSIONS
ECONOMICS
ENERGY SOURCES
EQUIPMENT
FOSSIL FUELS
FREIGHT PIPELINES
FUELS
HAULAGE EQUIPMENT
LAND TRANSPORT
MATERIALS
MATERIALS HANDLING EQUIPMENT
MIXTURES
PIPELINES
PUBLIC UTILITIES
REMOVAL
SLURRIES
SUSPENSIONS
013000* - Coal
Lignite
& Peat- Transport
Handling
& Storage
200108 - Fossil-Fueled Power Plants- Fuels- (1980-)