POWER PLANT WITH CO2 CAPTURE
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United States of America Patent
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app pub date -
Jan 11, 2013
filing date -
Dec 24, 2008
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Abstract
A method is provided for operating a combined cycle power plant having at least one gas turbine, a heat recovery steam generator (HSRG), a steam turbine and a CO2 capture system. The method includes recirculating a first partial flow of flue gases from the HRSG. The method also includes capturing CO2 from a second partial flow of flue gases from the HRSG; and operating a supplementary firing to increase the net power output of the plant and to at least partly compensate the power consumption of the CO2 capture system. A combined cycle power plant is also provided. The plant includes at least one gas turbine, at least one heat recovery steam generator, at least one steam turbine at least one CO2 capture system, and flue gas recirculation. The plant also includes a low excess air supplementary firing.
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