Process for preparing a stabilized coal-water slurry
Abstract
A process is described for preparing a stabilized coal particle suspension which includes the steps of providing an aqueous media substantially free of coal oxidizing constituents, reducing, in a nonoxidizing atmosphere, the particle size of the coal to be suspended to a size sufficiently small to permit suspension thereof in the aqueous media and admixing the coal of reduced particle size with the aqueous media to release into the aqueous media coal stabilizing constituents indigenous to and carried by the reduced coal particles in order to form a stabilized coal particle suspension. The coal stabilizing constituents are effective in a nonoxidizing atmosphere to maintain the coal particle suspension at essentially a neutral or alkaline pH. The coal is ground in a nonoxidizing atmosphere such as an inert gaseous atmosphere to reduce the coal to a sufficient particle size and is admixed with an aqueous media that has been purged of oxygen and acid-forming gases. 2 figs.
- Inventors:
- Issue Date:
- Research Org.:
- International Coal Refining Co
- OSTI Identifier:
- 7262867
- Patent Number(s):
- 4675024
- Application Number:
- PPN: US 6-597794
- Assignee:
- International Coal Refining Co., Allentown, PA (United States)
- DOE Contract Number:
- AC05-78OR03054
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 6 Apr 1984
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 01 COAL, LIGNITE, AND PEAT; FUEL SLURRIES; PRODUCTION; STABILIZATION; COAL; COAL PREPARATION; COMMINUTION; WATER; CARBONACEOUS MATERIALS; DISPERSIONS; ENERGY SOURCES; FOSSIL FUELS; FUELS; HYDROGEN COMPOUNDS; MATERIALS; MIXTURES; OXYGEN COMPOUNDS; SLURRIES; SUSPENSIONS; 010300* - Coal, Lignite, & Peat- Preparation- (1987-)
Citation Formats
Givens, E N, and Kang, D. Process for preparing a stabilized coal-water slurry. United States: N. p., 1987.
Web.
Givens, E N, & Kang, D. Process for preparing a stabilized coal-water slurry. United States.
Givens, E N, and Kang, D. Tue .
"Process for preparing a stabilized coal-water slurry". United States.
@article{osti_7262867,
title = {Process for preparing a stabilized coal-water slurry},
author = {Givens, E N and Kang, D},
abstractNote = {A process is described for preparing a stabilized coal particle suspension which includes the steps of providing an aqueous media substantially free of coal oxidizing constituents, reducing, in a nonoxidizing atmosphere, the particle size of the coal to be suspended to a size sufficiently small to permit suspension thereof in the aqueous media and admixing the coal of reduced particle size with the aqueous media to release into the aqueous media coal stabilizing constituents indigenous to and carried by the reduced coal particles in order to form a stabilized coal particle suspension. The coal stabilizing constituents are effective in a nonoxidizing atmosphere to maintain the coal particle suspension at essentially a neutral or alkaline pH. The coal is ground in a nonoxidizing atmosphere such as an inert gaseous atmosphere to reduce the coal to a sufficient particle size and is admixed with an aqueous media that has been purged of oxygen and acid-forming gases. 2 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jun 23 00:00:00 EDT 1987},
month = {Tue Jun 23 00:00:00 EDT 1987}
}