Patent ID: 7827778

Claim:
A method of generating energy in a power plant including a gas turbine, the method comprising: generating a flue gas from a gas turbine, wherein the gas turbine comprises a compression section having at least two stages comprising a low-pressure compressor and a high-pressure compressor, a combustion section fluidly coupled to the compression section, and an expander fluidly coupled to the combustion section; recirculating the flue gas to the low-pressure compressor; diverting a portion of the recirculated flue gas to a carbon dioxide (CO 2 ) separator and a remaining portion to the high-pressure compressor; separating CO 2 from the diverted portion in the CO 2 separator to generate a CO 2 lean gas; and expanding the CO 2 lean gas coming from the CO 2 separator in a separate expander.