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Title: Process for preparing a stabilized coal-water slurry

Abstract

A process 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.

Inventors:
 [1];  [2]
  1. Bethlehem, PA
  2. Macungie, PA
Publication Date:
Research Org.:
International Coal Refining Co
OSTI Identifier:
866288
Patent Number(s):
US 4675024
Assignee:
International Coal Refining Company (Allentown, PA)
DOE Contract Number:  
AC05-78OR03054
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
process; preparing; stabilized; coal-water; slurry; coal; particle; suspension; steps; providing; aqueous; media; substantially; free; oxidizing; constituents; reducing; nonoxidizing; atmosphere; size; suspended; sufficiently; permit; admixing; reduced; release; stabilizing; indigenous; carried; particles; form; effective; maintain; essentially; neutral; alkaline; ph; ground; inert; gaseous; reduce; sufficient; admixed; purged; oxygen; acid-forming; gases; coal particle; forming gas; water slurry; coal-water slurry; substantially free; particle size; inert gas; coal particles; aqueous media; oxidizing atmosphere; particle suspension; gaseous atmosphere; size sufficient; stabilized coal; forming gases; inert gaseous; alkaline ph; /44/241/

Citation Formats

Givens, Edwin N, and Kang, Doohee. Process for preparing a stabilized coal-water slurry. United States: N. p., 1987. Web.
Givens, Edwin N, & Kang, Doohee. Process for preparing a stabilized coal-water slurry. United States.
Givens, Edwin N, and Kang, Doohee. Thu . "Process for preparing a stabilized coal-water slurry". United States. https://www.osti.gov/servlets/purl/866288.
@article{osti_866288,
title = {Process for preparing a stabilized coal-water slurry},
author = {Givens, Edwin N and Kang, Doohee},
abstractNote = {A process 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.},
doi = {},
url = {https://www.osti.gov/biblio/866288}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1987},
month = {1}
}

Patent:

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