NOx adjustment system for gas turbine combustors
AssigneeGeneral Electric Company
InventorsWilly Steve Ziminsky, Scott Kopcho, Mark P. Bombard, Anthony Joseph Antonucci
Life of this patent
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Abstract
An embodiment may comprise a system for controlling NOx emissions from a turbine having combustion chambers. The system may comprise a center fuel flow and a plurality of outer fuel flows for each of a plurality of combustion chambers. An outer fuel flow is set to achieve a desired level of combustion dynamics for at least one of the plurality of combustion chambers. A delta adjustment value is determined for the center fuel flow that will result in a desired level of NOx emissions from the turbine, and for adjusting the center fuel flow according to the determined delta adjustment value to obtain the desired level of NOx emissions from the turbine.
Claims13
A fuel adjustment system for controlling NOx emissions from a gas turbine having combustion chambers comprising:
- a center fuel nozzle and a plurality of outer fuel nozzles for each of a plurality of combustion chambers;
- a controller structured to:
- set an outer nozzle fuel flow to achieve a desired level of combustion dynamics for at least one of the plurality of combustion chambers;
- and
- determine an adjustment value for a center nozzle fuel flow that will result in a desired level of NOx emissions from the gas turbine;
- at least one first flow control device structured to adjust the center nozzle fuel flow according to the determined adjustment value to obtain the desired level of NOx emissions from the gas turbine;
- and
- at least one second flow control device structured to set the outer nozzles fuel flow.
A system for controlling NOx emissions from a turbine having combustion chambers comprising:
- a center fuel flow means and a plurality of outer fuel flow means for each of a plurality of combustion chambers;
- means for setting an outer fuel flow means to achieve a desired level of combustion dynamics for at least one of the plurality of combustion chambers;
- means for determining an adjustment value for the center fuel flow means that will result in a desired level of NOx emissions from the turbine, and for adjusting the center fuel flow means according to the determined adjustment value to obtain the desired level of NOx emissions from the turbine.
Dependencies are inferred from the claim text.