Patent ID: 7631500
Filing Date: 2009-12-15
Classification: F23R

Abstract:
1. A method for operating a combustion system including at least one premixer assembly that includes a pilot swirler and a main swirler, said method comprising: coupling the main swirler to the pilot swirler such that the main swirler substantially circumscribes the pilot swirler; supplying fuel to a first fuel circuit defined in the main swirler; inducing swirling to the fuel supplied to the first fuel circuit via a first set of swirler vanes positioned within the main swirler, each of the first set of swirler vanes comprising at least one first fuel passage defined therein; supplying fuel to a second fuel circuit defined in the main swirler; inducing swirling to the fuel supplied to the second fuel circuit via a second set of swirler vanes positioned within the main swirler, each of the second set of swirler vanes comprising at least one second fuel passage defined therein; and coupling a shroud in flow communication to at least one of the first set of swirler vanes and the second set of swirler vanes, the shroud comprising at least one third fuel passage defined therein.