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Premixed direct injection nozzle for highly reactive fuels

United States Patent

September 24, 2013
View the Complete Patent at the US Patent & Trademark Office
A fuel/air mixing tube for use in a fuel/air mixing tube bundle is provided. The fuel/air mixing tube includes an outer tube wall extending axially along a tube axis between an inlet end and an exit end, the outer tube wall having a thickness extending between an inner tube surface having a inner diameter and an outer tube surface having an outer tube diameter. The tube further includes at least one fuel injection hole having a fuel injection hole diameter extending through the outer tube wall, the fuel injection hole having an injection angle relative to the tube axis. The invention provides good fuel air mixing with low combustion generated NOx and low flow pressure loss translating to a high gas turbine efficiency, that is durable, and resistant to flame holding and flash back.
Ziminsky; Willy Steve (Simpsonville, SC), Johnson; Thomas Edward (Greer, SC), Lacy; Benjamin Paul (Greer, SC), York; William David (Greer, SC), Uhm; Jong Ho (Simpsonville, SC), Zuo; Baifang (Simpsonville, SC)
General Electric Company (Schenectady, NY)
12/ 365,382
February 4, 2009
FEDERAL RESEARCH STATEMENT This invention was made with Government support under Contract No. DE-FC26-05NT42643, awarded by the Department of Energy. The Government has certain rights in the invention.