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AXIAL STAGE COMBUSTION SYSTEM WITH EXHAUST GAS RECIRCULATION

United States Patent Application

20170114717
A1
View the Complete Application at the US Patent & Trademark Office
A method of operating an axial stage combustion system in a gas turbine engine (12) including an EGR system (14) that extracts a portion of exhaust gas produced by the gas turbine engine (12) to a second axial stage of a combustor (18). The extracted exhaust gas is provided at an elevated temperature to a group of injector nozzles (50) at the second axial stage (34) of the combustor (18). A secondary fuel supply line (34) extends to an inlet on each of the injector nozzles (50), and the fuel is mixed with the exhaust gas within the injector nozzles (50) and the mixture of fuel and exhaust gas is injected into the second axial stage (34) of the combustor (18).
Martin, Scott M. (Daytona Beach, FL), Laster, Walter Ray (Oviedo, FL), Portillo Bilbao, Juan Enrique (Oviedo, FL)
15/ 311,856
June 26, 2014
STATEMENT REGARDING FEDERALLY SPONSORED DEVELOPMENT [0001] Development for this invention was supported in part by Contract No. DE-FC26-05NT42644, awarded by the United States Department of Energy. Accordingly, the United States Government may have certain rights in this invention.