Liquefaction of calcium-containing subbituminous coals and coals of lower rank
Abstract
An improved process for the treatment of a calcium-containing subbituminous coal and coals of lower rank to form insoluble, thermally stable calcium salts which remain within the solids portions of the residue on liquefaction of the coal, thereby suppressing the formation of scale, made up largely of calcium carbonate which normally forms within the coal liquefaction reactor (i.e., coal liquefaction zone), e.g., on reactor surfaces, lines, auxiliary equipment and the like. An oxide of sulfur, in liquid phase, is contacted with a coal feed sufficient to impregnate the pores of the coal. The impregnated coal, in particulate form, can thereafter be liquefied in a coal liquefaction reactor (reaction zone) at coal liquefaction conditions without significant formation of scale.
- Inventors:
-
- Baytown, TX
- Issue Date:
- OSTI Identifier:
- 863384
- Patent Number(s):
- 4161440
- Assignee:
- Exxon Research & Engineering Co. (Florham Park, NJ)
- Patent Classifications (CPCs):
-
C - CHEMISTRY C10 - PETROLEUM, GAS OR COKE INDUSTRIES C10G - CRACKING HYDROCARBON OILS
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10S - TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- DOE Contract Number:
- E(49-18)-2353
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- liquefaction; calcium-containing; subbituminous; coals; rank; improved; process; treatment; coal; form; insoluble; thermally; stable; calcium; salts; remain; solids; portions; residue; suppressing; formation; scale; carbonate; normally; forms; reactor; zone; surfaces; lines; auxiliary; equipment; oxide; sulfur; liquid; phase; contacted; feed; sufficient; impregnate; pores; impregnated; particulate; thereafter; liquefied; reaction; conditions; significant; calcium salts; auxiliary equipment; coal feed; liquefaction zone; improved process; coal liquefaction; liquid phase; reaction zone; calcium carbonate; particulate form; thermally stable; liquefaction reactor; subbituminous coals; stable calcium; subbituminous coal; reactor surfaces; calcium-containing subbituminous; form insoluble; liquefaction conditions; bituminous coal; bituminous coals; /208/44/
Citation Formats
Brunson, Roy J. Liquefaction of calcium-containing subbituminous coals and coals of lower rank. United States: N. p., 1979.
Web.
Brunson, Roy J. Liquefaction of calcium-containing subbituminous coals and coals of lower rank. United States.
Brunson, Roy J. Mon .
"Liquefaction of calcium-containing subbituminous coals and coals of lower rank". United States. https://www.osti.gov/servlets/purl/863384.
@article{osti_863384,
title = {Liquefaction of calcium-containing subbituminous coals and coals of lower rank},
author = {Brunson, Roy J},
abstractNote = {An improved process for the treatment of a calcium-containing subbituminous coal and coals of lower rank to form insoluble, thermally stable calcium salts which remain within the solids portions of the residue on liquefaction of the coal, thereby suppressing the formation of scale, made up largely of calcium carbonate which normally forms within the coal liquefaction reactor (i.e., coal liquefaction zone), e.g., on reactor surfaces, lines, auxiliary equipment and the like. An oxide of sulfur, in liquid phase, is contacted with a coal feed sufficient to impregnate the pores of the coal. The impregnated coal, in particulate form, can thereafter be liquefied in a coal liquefaction reactor (reaction zone) at coal liquefaction conditions without significant formation of scale.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 1979},
month = {Mon Jan 01 00:00:00 EST 1979}
}