Refining the process that refines the coal
First operated in 1973 to refine a sulfur-free solid fuel from coal, the Electric Power Research Institute's small pilot plant at Wilsonville, Alabama, is now a focal point for research and development in coal liquefaction. The solvent-refined coal process (SRC) is largely free of ash and so low in sulfur content that it can be burned without flue-gas desulfurization. The SRC, while still in the liquid form, is now being investigated as an intermediate product to be further upgraded into liquid boiler and turbine fuels. The segment of the process that is the principal focus at present is the separation of ash and unconverted coal residue from the SRC stream after it leaves the reaction section of the plant. Several techniques to upgrade the fuel have been tested at Wilsonville. The solvent extraction method known as critical solvent de-ashing will be combined with a catalytic hydrogenation unit to produce more liquid fuel as well as low-sulfur SRC in the near future. (SAC)
- OSTI ID:
- 5205374
- Journal Information:
- EPRI J.; (United States), Vol. 5:4
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
29 ENERGY PLANNING
POLICY AND ECONOMY
COAL LIQUEFACTION
RESEARCH PROGRAMS
COAL LIQUIDS
PURIFICATION
SOLVENT-REFINED COAL
SRC PROCESS
CATALYSTS
COAL LIQUEFACTION PLANTS
DEASHING
DESULFURIZATION
HYDROGENATION
SOLVENT EXTRACTION
CHEMICAL REACTIONS
EXTRACTION
FUELS
INDUSTRIAL PLANTS
LIQUEFACTION
SEPARATION PROCESSES
THERMOCHEMICAL PROCESSES
010407* - Coal & Coal Products- Solvent Extraction- (-1987)
010405 - Coal
Lignite
& Peat- Hydrogenation & Liquefaction
294001 - Energy Planning & Policy- Coal