Alkali injection system with controlled CO.sub.2 /O.sub.2 ratios for combustion of coal

Patent · Fri Jan 01 00:00:00 EST 1988

OSTI ID:866467

Berry, Gregory F ^[1]

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1. Naperville, IL

A high temperature combustion process for an organic fuel containing sulfur n which the nitrogen of air is replaced by carbon dioxide for combination with oxygen with the ratio of CO.sub.2 /O.sub.2 being controlled to generate combustion temperatures above 2000 K. for a gas-gas reaction with SO.sub.2 and an alkali metal compound to produce a sulfate and in which a portion of the carbon-dioxide rich gas is recycled for mixing with oxygen and/or for injection as a cooling gas upstream from heating exchangers to limit fouling of the exchangers, with the remaining carbon-dioxide rich gas being available as a source of CO.sub.2 for oil recovery and other purposes.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL (United States)
• DOE Contract Number: W-31109-ENG-38
• Assignee: United States of America as represented by Department of Energy (Washington, DC)
• Patent Number(s): US 4718361
• OSTI ID: 866467
• Country of Publication: United States
• Language: English

Related Subjects

alkali
injection
controlled
ratios
combustion
coal
temperature
process
organic
fuel
containing
sulfur
nitrogen
air
replaced
carbon
dioxide
combination
oxygen
ratio
generate
temperatures
2000
gas-gas
reaction
metal
compound
produce
sulfate
portion
carbon-dioxide
rich
gas
recycled
mixing
cooling
upstream
heating
exchangers
limit
fouling
remaining
available
source
oil
recovery
purposes
cooling gas
temperature combustion
combustion process
oil recovery
metal compound
carbon dioxide
alkali metal
organic fuel
gas reaction
rich gas
containing sulfur
fuel containing
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