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Improved Supercritical-Solvent Extraction of CoalRaw coal upgraded by supercritical-solvent extraction system that uses two materials instead of one. System achieved extraction yields of 20 to 49 weight percent. Single-solvent yields are about 25 weight percent. Experimental results show extraction yields may be timedependent. Observed decreases in weight of coal agreed well with increases in ash content of residue.
Document ID
19820000036
Document Type
Other - NASA Tech Brief
Authors
Compton, L.
(CALTECH)
Date Acquired
August 10, 2013
Publication Date
December 1, 1982
Publication Information
Publication: NASA Tech Briefs
Volume: 6
Issue: 4
ISSN: 0145-319X
Subject Category
Materials
Report/Patent Number
NPO-15210
Accession Number
82B10036
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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