Carbon dioxide remediation via oxygen-enriched combustion using dense ceramic membranes

Patent · Mon Jan 01 00:00:00 EST 2001

OSTI ID:873490

Balachandran, Uthamalingam ^[1]; Bose, Arun C ^[2]; McIlvried, Howard G ^[2]

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1. Hinsdale, IL
2. Pittsburgh, PA

A method of combusting pulverized coal by mixing the pulverized coal and an oxidant gas to provide a pulverized coal-oxidant gas mixture and contacting the pulverized coal-oxidant gas mixture with a flame sufficiently hot to combust the mixture. An oxygen-containing gas is passed in contact with a dense ceramic membrane of metal oxide material having electron conductivity and oxygen ion conductivity that is gas-impervious until the oxygen concentration on one side of the membrane is not less than about 30% by volume. An oxidant gas with an oxygen concentration of not less than about 30% by volume and a CO.sub.2 concentration of not less than about 30% by volume and pulverized coal is contacted with a flame sufficiently hot to combust the mixture to produce heat and a flue gas. One dense ceramic membrane disclosed is selected from the group consisting of materials having formulae SrCo.sub.0.8 Fe.sub.0.2 O.sub.x, SrCo.sub.0.5 FeO.sub.x and La.sub.0.2 Sr.sub.0.8 Co.sub.0.4 Fe.sub.0.6 O.sub.x.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL (United States)
• DOE Contract Number: W-31109-ENG-38
• Assignee: University of Chicago (Chicago, IL)
• Patent Number(s): US 6173663
• OSTI ID: 873490
• Country of Publication: United States
• Language: English

Related Subjects

carbon
dioxide
remediation
via
oxygen-enriched
combustion
dense
ceramic
membranes
method
combusting
pulverized
coal
mixing
oxidant
gas
provide
coal-oxidant
mixture
contacting
flame
sufficiently
hot
combust
oxygen-containing
passed
contact
membrane
metal
oxide
material
electron
conductivity
oxygen
gas-impervious
concentration
30
volume
contacted
produce
heat
flue
disclosed
selected
consisting
materials
formulae
srco
feo
sr
oxygen concentration
oxidant gas
ceramic membranes
oxygen-containing gas
pulverized coal
carbon dioxide
metal oxide
gas mixture
flue gas
ceramic membrane
containing gas
oxide material
dense ceramic
produce heat
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