Upgrading coal and other carbonaceous fuels using a lean fuel gas stream from a pyrolysis step
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United States of America Patent
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Apr 14, 2015
Grant Date -
Jan 17, 2013
app pub date -
Jul 12, 2011
filing date -
Jul 12, 2011
priority date (Note) -
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Abstract
A method and apparatus for upgrading coal and other carbonaceous fuels includes subjecting the carbonaceous fuel to a pyrolyzing process, thereby forming upgraded carbonaceous fuel and a flow of lean fuel gases. Auxiliary fuel is combusted in an auxiliary fuel combustor to produce auxiliary fuel combustion gases, and the lean fuel gases are heated with the auxiliary fuel combustion gases. The heated lean fuel gases are combusted in a lean fuel combustor, thereby producing a gas stream of products of combustion, and at least a portion of the gas stream of products of combustion are directed to the pyrolyzer.
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International Classification(s)
- C01B:NON-METALLIC ELEMENTS; COMPOUNDS THEREOF
- F23K:FEEDING FUEL TO COMBUSTION APPARATUS
- C10L:FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYN....
- C10J:PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS G....
- F23N:REGULATING OR CONTROLLING COMBUSTION
- C10B:DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS....
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