Process for solvent refining of coal using a denitrogenated and dephenolated solvent
A process is disclosed for the solvent refining of nonanthracitic coal at elevated temperatures and pressure in a hydrogen atmosphere using a hydrocarbon solvent which before being recycled in the solvent refining process is subjected to chemical treatment to extract substantially all nitrogenous and phenolic constituents from the solvent so as to improve the conversion of coal and the production of oil in the solvent refining process. The solvent refining process can be either thermal or catalytic. The extraction of nitrogenous compounds can be performed by acid contact such as hydrogen chloride or fluoride treatment, while phenolic extraction can be performed by caustic contact or contact with a mixture of silica and alumina.
- Assignee:
- Air Products and Chemicals Inc.
- Patent Number(s):
- US 4472263
- OSTI ID:
- 6099974
- Resource Relation:
- Patent File Date: Filed date 19 Jul 1982; Other Information: PAT-APPL-399671
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
COAL
SOLVENT EXTRACTION
ORGANIC SOLVENTS
DENITRATION
DEPHENOLIZATION
RECYCLING
HYDROCARBONS
NITROGEN COMPOUNDS
PHENOLS
REMOVAL
AROMATICS
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
ENERGY SOURCES
EXTRACTION
FOSSIL FUELS
FUELS
HYDROXY COMPOUNDS
MATERIALS
ORGANIC COMPOUNDS
SEPARATION PROCESSES
SOLVENTS
010407* - Coal & Coal Products- Solvent Extraction- (-1987)