Low emission power generation systems and methods incorporating carbon dioxide separation
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United States of America Patent
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Oct 11, 2016
Grant Date -
Feb 20, 2014
app pub date -
Mar 5, 2012
filing date -
Mar 22, 2011
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Abstract
Methods and systems for CO2 separation in low emission power plants are provided. One system includes a gas turbine system that combusts a fuel and an oxidant in the presence of a compressed recycle stream to provide mechanical power and a gaseous exhaust. A purge stream is taken from the compressed recycle stream and directed to a CO2 separator configured to absorb CO2 from the purge stream using a potassium carbonate solvent. Volatiles are removed from the rich solvent by stripping or by flashing to an intermediate pressure before the rich solvent is regenerated and CO2 is removed.
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