US 12,410,747 B1
System and method for exhaust gas recirculation and injection in gas turbine
Rajarshi Saha, Bangalore (IN); Jeevankumar Krishnan, Bangalore (IN); Sandeep Kumar Reddy Venkata, Bangalore (IN); and Ravikumar Gunasekaran, Bangalore (IN)
Assigned to GE Infrastructure Technology LLC, Greenville, SC (US)
Filed by GE Infrastructure Technology LLC, Greenville, SC (US)
Filed on Aug. 6, 2024, as Appl. No. 18/796,207.
Int. Cl. F02C 3/34 (2006.01); F02C 3/30 (2006.01)
CPC F02C 3/305 (2013.01) [F02C 3/34 (2013.01); F05D 2270/08 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system, comprising:
a gas turbine system comprising:
a gas turbine engine comprising a compressor, a combustor, and a turbine; and
an exhaust gas recirculation (EGR) system configured to recirculate a first portion of an exhaust flow from the gas turbine engine to an intake of the gas turbine engine;
an exhaust gas injection system, comprising:
a multi-stage compressor comprising a plurality of stages, wherein the multi-stage compressor is configured to compress a second portion of the exhaust flow;
an intercooler coupled to the multi-stage compressor; and
a heat exchanger configured to transfer heat from a combustion exhaust gas output by a combustion system to the second portion of the exhaust flow compressed by the multi-stage compressor, wherein the combustion system is different from the combustor of the gas turbine system;
wherein the exhaust gas injection system is configured to inject the second portion of the exhaust flow into the gas turbine engine at one or more exhaust injection locations to provide power augmentation of the gas turbine engine, the one or more exhaust injection locations being axially spaced from the intake of the gas turbine engine.