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System and method for reducing combustion dynamics in a combustor

United States Patent

8,511,086
August 20, 2013
View the Complete Patent at the US Patent & Trademark Office
A system for reducing combustion dynamics in a combustor includes an end cap having an upstream surface axially separated from a downstream surface, and tube bundles extend through the end cap. A diluent supply in fluid communication with the end cap provides diluent flow to the end cap. Diluent distributors circumferentially arranged inside at least one tube bundle extend downstream from the downstream surface and provide fluid communication for the diluent flow through the end cap. A method for reducing combustion dynamics in a combustor includes flowing fuel through tube bundles that extend axially through an end cap, flowing a diluent through diluent distributors into a combustion chamber, wherein the diluent distributors are circumferentially arranged inside at least one tube bundle and each diluent distributor extends downstream from the end cap, and forming a diluent barrier in the combustion chamber between at least one pair of adjacent tube bundles.
Uhm; Jong Ho (Simpsonville, SC), Johnson; Thomas Edward (Greer, SC), Zuo; Baifang (Simpsonville, SC), York; William David (Greer, SC)
General Electric Company (Schenectady, NY)
13/ 409,326
20130227955
March 1, 2012
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.