Liquefaction process
Abstract
Scale formation during the liquefaction of lower ranking coals and similar carbonaceous materials is significantly reduced and/or prevented by pretreatment with a combination of pretreating agents comprising SO.sub.2 and an oxidizing agent. The pretreatment is believed to convert at least a portion of the scale-forming components and particularly calcium, to the corresponding sulfate prior to liquefaction. The pretreatment may be accomplished with the combination of pretreating agents either simultaneously by using a mixture comprising SO.sub.2 and an oxidizing agent or sequentially by first treating with SO.sub.2 and then with an oxidizing agent.
- Inventors:
-
- Westfield, NJ
- Houston, TX
- Issue Date:
- Research Org.:
- Exxon Research and Engineering Co.
- OSTI Identifier:
- 864352
- Patent Number(s):
- 4351716
- Assignee:
- Exxon Research & Engineering Co. (Florham Park, NJ)
- Patent Classifications (CPCs):
-
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
C - CHEMISTRY C10 - PETROLEUM, GAS OR COKE INDUSTRIES C10G - CRACKING HYDROCARBON OILS
- DOE Contract Number:
- EF-77-A-01-2893
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- liquefaction; process; scale; formation; ranking; coals; similar; carbonaceous; materials; significantly; reduced; prevented; pretreatment; combination; pretreating; agents; comprising; oxidizing; agent; believed; convert; portion; scale-forming; components; particularly; calcium; corresponding; sulfate; prior; accomplished; simultaneously; mixture; sequentially; treating; scale formation; significantly reduce; scale-forming components; ranking coals; carbonaceous materials; liquefaction process; carbonaceous material; mixture comprising; significantly reduced; oxidizing agent; similar carbonaceous; sulfate prior; particularly calcium; pretreating agents; oxidizing agen; agents comprising; /208/
Citation Formats
Gorbaty, Martin L, Stone, John B, and Poddar, Syamal K. Liquefaction process. United States: N. p., 1982.
Web.
Gorbaty, Martin L, Stone, John B, & Poddar, Syamal K. Liquefaction process. United States.
Gorbaty, Martin L, Stone, John B, and Poddar, Syamal K. Fri .
"Liquefaction process". United States. https://www.osti.gov/servlets/purl/864352.
@article{osti_864352,
title = {Liquefaction process},
author = {Gorbaty, Martin L and Stone, John B and Poddar, Syamal K},
abstractNote = {Scale formation during the liquefaction of lower ranking coals and similar carbonaceous materials is significantly reduced and/or prevented by pretreatment with a combination of pretreating agents comprising SO.sub.2 and an oxidizing agent. The pretreatment is believed to convert at least a portion of the scale-forming components and particularly calcium, to the corresponding sulfate prior to liquefaction. The pretreatment may be accomplished with the combination of pretreating agents either simultaneously by using a mixture comprising SO.sub.2 and an oxidizing agent or sequentially by first treating with SO.sub.2 and then with an oxidizing agent.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1982},
month = {1}
}
Save to My Library
You must Sign In or Create an Account in order to save documents to your library.