Patent ID: 8539776
Filing Date: 2013-09-24
Classification: C01B,F02C,F05D,Y02E

Abstract:
1. A system, comprising: a gas turbine including a turbine compressor, wherein the turbine compressor discharges an air stream in connection with compressing air used during combustion; a separate air compressor configured to receive the air stream and compress the air stream to generate a pressurized stream; a first heat exchanger configured to receive at least a first portion of the pressurized stream and indirectly heat the first portion using heat from an oxygen stream from an Ion Transport Membrane (ITM); a second heat exchanger configured to receive at least a second portion of the pressurized stream and indirectly heat the second portion to an ITM inlet temperature using heat from a heated non-permeate stream from the ITM which has been further heated; the ITM configured to receive a combination of the heated first portion and the heated second portion and generate 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; the fuel gas burner configured to receive the non-permeate stream and combust a fuel gas in combination with the non-permeate stream to generate the heated non-permeate stream and pass the heated non-permeate stream to the second heat exchanger; a conduit configured to receive a cooled non-permeate stream from the second heat exchanger and introduce the cooled non-permeate in a gas turbine burner; and the gas turbine burner which combusts a fuel gas mixed with at least a portion of the cooled non-permeate stream in air, wherein a temperature of the combination of mixture of fuel gas and the cooled non-permeate stream is below a predefined threshold temperature for the gas turbine burner, and a concentration of oxygen in the cooled non-permeate stream is such that when mixed with a fuel gas results in an oxygen concentration below a lower flammable limit of the mixture.