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US 3,939,653 AGranted
Gas turbine combustors and method of operation
AssigneePhillips Petroleum Company
InventorRobert M. Schirmer
Life of this patent
Estimating the term…
Abstract
New combustors, and methods of operating same, which produce lower emissions, particularly lower emissions of nitrogen oxides. Methods and means are provided for supplying separate streams of air to primary and secondary combustion zones of a combustor, for removing heat from said primary combustion zone, and reintroducing said heat into the combustor at a region spaced apart and downstream from said primary and secondary combustion zones.
Claims15
A combustor comprising, in combination:
- an outer casing;
- a flame tube disposed within said casing and spaced apart therefrom to form a first annular chamber between said flame tube and said casing;
- an air inlet means for introducing a first stream of air into the upstream end portion of said flame tube;
- a fuel inlet means for introducing fuel into the upstream end portion of said flame tube;
- an imperforate sleeve surrounding an upstream portion of said flame tube and spaced apart therefrom to longitudinally enclose an upstream portion of said first annular chamber and define a second annular chamber between said sleeve and said outer casing;
- means for supporting said sleeve in said spaced apart position from said flame tube;
- a wall member secured to said outer casing and substantially closing the downstream end of said second annular chamber;
- at least one opening provided in the wall of said flame tube at a first station located intermediate the upstream and downstream ends thereof;
- first conduit means extending from said second annular chamber into communication with said opening located at said first station for admitting a second stream of air from said second annular chamber into the interior of said flame tube;
- at least one other opening provided in the wall of said flame tube at a second station located downstream from said first station for admitting a third stream of air from said first annular chamber into the interior of said flame tube;
- and
- at least one opening provided in said wall member for providing communication between said second annular chamber and the portion of said first annular chamber downstream therefrom.
9 more elements
Dependencies are inferred from the claim text.