Hydrothermal pretreatment to prevent scale during liquefaction of certain solid carbonaceous materials
Abstract
Scale formation during the liquefaction of lower ranking coals and similar carbonaceous materials is significantly reduced and/or prevented by hydrothermal pretreatment. The said pretreatment is believed to convert the scale-forming components to the corresponding carbonate prior to liquefaction. The said pretreatment is accomplished at a total pressure within the range from about 1000 to about 4400 psia. Temperature during said pretreatment will generally be within the range from about 500.degree. to about 700.degree. F.
- Inventors:
-
- Houston, TX
- Baytown, TX
- Issue Date:
- Research Org.:
- Exxon Research and Engineering Co. (Florham Park, NJ)
- OSTI Identifier:
- 865016
- Patent Number(s):
- 4450066
- Assignee:
- Exxon Research and Engineering Co. (Florham Park, NJ)
- Patent Classifications (CPCs):
-
C - CHEMISTRY C10 - PETROLEUM, GAS OR COKE INDUSTRIES C10G - CRACKING HYDROCARBON OILS
- DOE Contract Number:
- FC01-77ET10069
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- hydrothermal; pretreatment; prevent; scale; liquefaction; solid; carbonaceous; materials; formation; ranking; coals; similar; significantly; reduced; prevented; believed; convert; scale-forming; components; corresponding; carbonate; prior; accomplished; total; pressure; range; 1000; 4400; psia; temperature; 500; degree; 700; scale formation; significantly reduce; scale-forming components; ranking coals; total pressure; carbonaceous materials; carbonaceous material; solid carbonaceous; significantly reduced; similar carbonaceous; solid carbon; prevent scale; corresponding carbonate; /208/
Citation Formats
Stone, John B, and Floyd, Frank M. Hydrothermal pretreatment to prevent scale during liquefaction of certain solid carbonaceous materials. United States: N. p., 1984.
Web.
Stone, John B, & Floyd, Frank M. Hydrothermal pretreatment to prevent scale during liquefaction of certain solid carbonaceous materials. United States.
Stone, John B, and Floyd, Frank M. Sun .
"Hydrothermal pretreatment to prevent scale during liquefaction of certain solid carbonaceous materials". United States. https://www.osti.gov/servlets/purl/865016.
@article{osti_865016,
title = {Hydrothermal pretreatment to prevent scale during liquefaction of certain solid carbonaceous materials},
author = {Stone, John B and Floyd, Frank M},
abstractNote = {Scale formation during the liquefaction of lower ranking coals and similar carbonaceous materials is significantly reduced and/or prevented by hydrothermal pretreatment. The said pretreatment is believed to convert the scale-forming components to the corresponding carbonate prior to liquefaction. The said pretreatment is accomplished at a total pressure within the range from about 1000 to about 4400 psia. Temperature during said pretreatment will generally be within the range from about 500.degree. to about 700.degree. F.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Jan 01 00:00:00 EST 1984},
month = {Sun Jan 01 00:00:00 EST 1984}
}
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