Methods and apparatus for decreasing combustor emissions
AssigneeGeneral Electric Company
InventorHarjit S. Hura
Life of this patent
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Abstract
A combustor includes a fuel injector for injecting fuel into the combustor, a baseline air blast pilot splitter including a converging downstream side and a splitter extension. The splitter extension includes a diverging upstream portion attached to a baseline air blast splitter, a diverging downstream portion, and a converging intermediate portion extending between the upstream portion and the downstream portion.
Claims20
A method for reducing an amount of carbon monoxide and hydrocarbon emissions and smoke from a gas turbine combustor using a splitter extension, the combustor including a pilot fuel injector, a baseline air blast pilot splitter including a convergent portion, and a center body, the convergent portion extending downstream to an end, the splitter extension including a divergent upstream portion, a divergent downstream portion, and a convergent intermediate portion extending between the upstream portion and the downstream portion, the upstream portion having a first diameter and attached to the baseline air blast pilot splitter, the downstream portion having a second diameter, said method comprising the steps of:
- injecting fuel into the combustor;
- and
- directing airflow into the combustor such that the airflow passes through the baseline air blast splitter into the splitter extension attached to the end of the baseline air blast splitter convergent portion.
An extension for a gas turbine combustor, the combustor including a fuel injector and a baseline air blast pilot splitter including a convergent portion, said extension comprising an upstream portion, a downstream portion, and an intermediate portion extending between said upstream portion and said downstream portion, said upstream portion attached to a downstream end of the baseline air blast pilot splitter.
A combustor for a gas turbine comprising:
- a fuel injector;
- a center body comprising an annular body and having an axis of symmetry, said fuel injector disposed within said center body;
- a baseline air blast pilot splitter comprising an upstream side and an downstream side, said downstream side converging towards said center body axis of symmetry;
- and
- a splitter extension comprising a diverging upstream portion, a diverging downstream portion, and an intermediate portion extending between said upstream portion and said downstream portion, said upstream portion attached to an end of said baseline air blast pilot splitter.
Dependencies are inferred from the claim text.