Chemical comminution and deashing of low-rank coals
Abstract
A method of chemically comminuting a low-rank coal while at the same time increasing the heating value of the coal. A strong alkali solution is added to a low-rank coal to solubilize the carbonaceous portion of the coal, leaving behind the noncarbonaceous mineral matter portion. The solubilized coal is precipitated from solution by a multivalent cation, preferably calcium.
- Inventors:
-
- Idaho Falls, ID
- Issue Date:
- Research Org.:
- Idaho National Laboratory (INL), Idaho Falls, ID (United States)
- OSTI Identifier:
- 875152
- Patent Number(s):
- H001118
- Assignee:
- United States of America as represented by United States (Washington, DC)
- DOE Contract Number:
- AC07-78ID01570
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 1989 Sep 26
- Country of Publication:
- United States
- Language:
- English
- Subject:
- chemical; comminution; deashing; low-rank; coals; method; chemically; comminuting; coal; time; increasing; heating; value; strong; alkali; solution; added; solubilize; carbonaceous; leaving; noncarbonaceous; mineral; matter; portion; solubilized; precipitated; multivalent; cation; preferably; calcium; heating value; mineral matter; low-rank coal; alkali solution; rank coal; solubilized coal; strong alkali; statutory invention registration; /44/
Citation Formats
Quigley, David R. Chemical comminution and deashing of low-rank coals. United States: N. p., 1992.
Web.
Quigley, David R. Chemical comminution and deashing of low-rank coals. United States.
Quigley, David R. Wed .
"Chemical comminution and deashing of low-rank coals". United States. https://www.osti.gov/servlets/purl/875152.
@article{osti_875152,
title = {Chemical comminution and deashing of low-rank coals},
author = {Quigley, David R.},
abstractNote = {A method of chemically comminuting a low-rank coal while at the same time increasing the heating value of the coal. A strong alkali solution is added to a low-rank coal to solubilize the carbonaceous portion of the coal, leaving behind the noncarbonaceous mineral matter portion. The solubilized coal is precipitated from solution by a multivalent cation, preferably calcium.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Jan 01 00:00:00 EST 1992},
month = {Wed Jan 01 00:00:00 EST 1992}
}
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Works referenced in this record:
Hydrogen evolution during alkali digestion of brown coal
journal, February 1989
- Pang, Louis S. K.; Vassallo, Anthony M.; Wilson, Michael A.
- Fuel, Vol. 68, Issue 2
The influence of pH on biological solubulization of oxidized, low-rank coal
journal, August 1988
- Quigley, D. R.; Wey, J. E.; Breckenridge, C. R.
- Resources, Conservation and Recycling, Vol. 1, Issue 3-4
Evidence that microbially produced alkaline materials are involved in coal biosolubilization
journal, January 1989
- Quigley, D. R.; Ward, B.; Crawford, D. L.
- Applied Biochemistry and Biotechnology, Vol. 20-21, Issue 1