Method for treating coal to obtain a refined carbonaceous material
Patent
·
OSTI ID:5219806
A process is described for obtaining a refined, carbonaceous product from essentially raw coal by treating the coal with an amine solution to dissolve a portion of the coal, leaving undissolved coal and waste material such as ash. The dissolved coal is separated from the undissolved components and the amine removed to leave the refined carbonaceous extract of the invention. The undissolved coal and waste are separated and amine removed from the undissolved coal to produce a residue. Amine is advantageously recovered for further use. Prior to treatment with amine the coal may be subjected to pre-treatment such as crushing , drying or digestion in alkali metal carbonate solution. Residual amine is advantageously removed from the refined product and residue by stripping with alcohol.
- Assignee:
- EDB-82-136294
- Patent Number(s):
- US 4319980
- OSTI ID:
- 5219806
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
01 COAL, LIGNITE, AND PEAT
010407* -- Coal & Coal Products-- Solvent Extraction-- (-1987)
ALCOHOLS
ALKALI METAL COMPOUNDS
AMINES
BROWN COAL
CARBON COMPOUNDS
CARBONACEOUS MATERIALS
CARBONATES
COAL
COMMINUTION
CRUSHING
DRYING
ENERGY SOURCES
EXTRACTION
FOSSIL FUELS
FUELS
HEAT TREATMENTS
HYDROXY COMPOUNDS
LIGNITE
MANAGEMENT
MATERIALS
MATERIALS RECOVERY
METHANOL
METHYLAMINE
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PROCESSING
RECOVERY
SEPARATION PROCESSES
SODIUM CARBONATES
SODIUM COMPOUNDS
SOLVENT EXTRACTION
SUBBITUMINOUS COAL
WASTE MANAGEMENT
WASTE PROCESSING
010407* -- Coal & Coal Products-- Solvent Extraction-- (-1987)
ALCOHOLS
ALKALI METAL COMPOUNDS
AMINES
BROWN COAL
CARBON COMPOUNDS
CARBONACEOUS MATERIALS
CARBONATES
COAL
COMMINUTION
CRUSHING
DRYING
ENERGY SOURCES
EXTRACTION
FOSSIL FUELS
FUELS
HEAT TREATMENTS
HYDROXY COMPOUNDS
LIGNITE
MANAGEMENT
MATERIALS
MATERIALS RECOVERY
METHANOL
METHYLAMINE
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PROCESSING
RECOVERY
SEPARATION PROCESSES
SODIUM CARBONATES
SODIUM COMPOUNDS
SOLVENT EXTRACTION
SUBBITUMINOUS COAL
WASTE MANAGEMENT
WASTE PROCESSING