Liquefaction process

Patent · Fri Jan 01 00:00:00 EST 1982

OSTI ID:864352

Gorbaty, Martin L ^[1]; Stone, John B ^[2]; Poddar, Syamal K ^[2]

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1. Westfield, NJ
2. Houston, TX

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.

• Research Organization: Exxon Research and Engineering Co.
• DOE Contract Number: EF-77-A-01-2893
• Assignee: Exxon Research & Engineering Co. (Florham Park, NJ)
• Patent Number(s): US 4351716
• OSTI ID: 864352
• Country of Publication: United States
• Language: English

Related Subjects

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
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