Method and system for using low btu fuel gas in a gas turbine

Details Method and system for using low btu fuel gas in a gas turbine Method and system for using low btu fuel gas in a gas turbine

F - Mech Eng,Light,Heat,Weapons

23

K

F23K 5/08 (2006.01) B01D 53/22 (2006.01) F02C 7/22 (2006.01)

Patent

CA 2613768

In one embodiment, a combustion system comprises: a fuel supply comprising a fuel having a heating value of less than or equal to about 100 Btu/scf, an inert gas sequestration unit (32) in fluid communication with the fuel supply, and a combustion system located downstream of and in fluid communication with the inert gas sequestration unit (32) and with an oxidant (78) supply. The inert gas sequestration unit (32) comprises a membrane configured to separate N2 from CO and to form a retentate stream having a heating value of greater than or equal to about 110 Btu/scf. In one embodiment, a method for operating a power plant (8), comprises: passing a fuel stream (76) through an inert gas sequestration unit (32) to remove N2 from the fuel stream (76) and to form a retentate stream, and combusting the retentate stream and an oxidant (78) stream to form a combustion stream.

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