US 7,513,100 B2
Systems for low emission gas turbine energy generation
Eric Motter, Greenville, S.C. (US); Willy Steve Ziminsky, Simpsonville, S.C. (US); Arthur James Fossum, Greer, S.C. (US); and Robert Joseph Iasillo, Simpsonville, S.C. (US)
Assigned to General Electric Company, Schenectady, N.Y. (US)
Filed on Oct. 24, 2005, as Appl. No. 11/257,204.
Prior Publication US 2007/0089425 A1, Apr. 26, 2007
Int. Cl. F02C 3/30 (2006.01)
U.S. Cl. 60—39.3  [60/39.55] 14 Claims
OG exemplary drawing
 
1. A dry low NOx gas turbine engine system comprising:
a gas turbine engine comprising at least one dry low NOx combustor including a plurality of injection points, at least some of the injection points configured to inject a fuel into said combustor at a plurality of different locations;
a liquid water source coupled to said combustor and operable to inject liquid water into others of said plurality of injection points; and
a control system comprising:
a sensor configured to measure a concentration of NOx present in turbine exhaust gas;
a processor programmed to:
receive a signal indicative of the turbine exhaust gas NOx concentration; and
automatically transmit a signal for controlling the water injection using the received exhaust gas NOx concentration signal.