Methods of oxy-combustion power generation using low heating value fuel
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United States of America Patent
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Issued Date -
Dec 30, 2010
app pub date -
Mar 4, 2010
filing date -
Mar 4, 2009
priority date (Note) -
Abandoned
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Abstract
An oxy-combustor is provided to combust oxygen with gaseous low heating value fuel. A compressor upstream of the combustor compresses the fuel. The combustor produces a drive gas including steam and carbon dioxide as well as other non-condensable gases in many cases, which pass through a turbine to output power. The drive gas can be recirculated to the combustor, either through the compressor, the oxygen inlet or directly to the combustor. Recirculation can occur before or after a condenser for separation of a portion of the water from the carbon dioxide. Excess carbon dioxide and steam is collected from the system. The turbine, combustor and compressor can be derived from an existing gas turbine with fuel and air/oxidizer lines swapped.
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