| 主权项 |
1. A method, comprising:
discharging an air stream in connection with compressing air used during combustion in a gas turbine including a turbine compressor and an expander; compressing the air stream to generate a pressurized stream; indirectly heating the pressurized stream using heat from an oxygen stream from an Ion Transport Membrane (ITM) in a first heat exchanger; receiving, from a first heat exchanger, at least a portion of heated pressurized air; indirectly heating, using the first heat exchanger, the pressurized stream to an ITM inlet temperature using heat from a non-permeate stream from the ITM which has been further heated; generating, using the ITM, the oxygen stream and the non-permeate stream, wherein the non-permeate stream is passed to a fuel gas burner and the oxygen stream is passed to the first heat exchanger; combusting, using the fuel gas burner, a fuel gas in combination with the non-permeate stream and air from the turbine compressor to generate a heated non-permeate stream, wherein a temperature of the combination of the fuel gas and the non-permeate stream is below a predefined threshold temperature for the fuel gas burner, and a concentration of oxygen in the heated non-permeate stream is such that when mixed with the fuel gas results in an oxygen concentration below a lower flammable limit of the mixture; heating, using a second heat exchanger, at least a portion of the pressurized stream using heat from the heated non-permeate stream, wherein the heated non-permeate stream is cooled during the indirect heating; and introducing the cooled non-permeate stream in at least one of the fuel gas for the gas turbine or at a point between the gas turbine air compressor and the expander. |
