Method and apparatus to decrease combustor emissions
AssigneeGeneral Electric Company
InventorsTimothy James Held, Mark Anthony Mueller, Jun Xu
Life of this patent
Estimating the term…
Abstract
A method for operating a gas turbine engine facilitates reducing an amount of emissions from a combustor. The combustor includes a mixer assembly including a pilot mixer, a main mixer, and an annular centerbody extending therebetween. The method comprises injecting at least one of fuel and airflow into the combustor through at least one swirler positioned within the pilot mixer, and injecting fuel into the combustor through at least one swirler positioned within the main mixer, such that the fuel is directed into a combustion chamber downstream from the main mixer.
Claims6
A gas turbine engine comprising a combustor comprising a combustion chamber and a mixer assembly upstream from said combustion chamber for controlling emissions from said combustor, said mixer assembly comprising a pilot mixer and a main mixer, said pilot mixer comprising a pilot centerbody and a plurality of swirlers upstream and radially outward from said pilot centerbody, said main mixer radially outward from and concentrically aligned with respect to said pilot mixer, said main mixer comprising at least one swirler configured to inject fuel therethrough towards said combustion chamber, said combustor further comprises an annular centerbody extending between said pilot mixer and said main mixer, said centerbody comprising a radially inner surface, a radially outer surface, and a plurality of fuel injection ports, said radially inner surface comprising a divergent portion and a convergent portion, said plurality of fuel injection ports configured to inject fuel radially outwardly into said main mixer.
Dependencies are inferred from the claim text.