SYSTEM AND METHOD OF CONTROLLING COMBUSTION AND EMISSIONS IN GAS TURBINE ENGINE WITH EXHAUST GAS RECIRCULATION

摘要

In one embodiment, a system includes a turbine combustor having a combustor liner disposed about a combustion chamber, a head end upstream of the combustion chamber relative to a downstream direction of a flow of combustion gases through the combustion chamber, a flow sleeve disposed at an offset about the combustor liner to define a passage, and a barrier within the passage. The head end is configured to direct an oxidant flow and a first fuel flow toward the combustion chamber. The passage is configured to direct a gas flow toward the head end and to direct a portion of the oxidant flow toward a turbine end of the turbine combustor. The gas flow includes a substantially inert gas. The barrier is configured to block the portion of the oxidant flow toward the turbine end and to block the gas flow toward the head end within the passage.

主权项

1. A system comprising:
a turbine combustor comprising:
a combustor liner disposed about a combustion chamber;a head end upstream of the combustion chamber relative to a downstream direction of a flow of combustion gases through the combustion chamber, wherein the head end is configured to direct an oxidant flow and a first fuel flow toward the combustion chamber;a flow sleeve disposed at an offset about the combustor liner to define a passage, wherein the passage is configured to direct a gas flow toward the head end and to direct a portion of the oxidant flow toward a turbine end of the turbine combustor, wherein the gas flow comprises a substantially inert gas; anda barrier within the passage, wherein the barrier is configured to block the portion of the oxidant flow toward the turbine end and to block the gas flow toward the head end within the passage.