Turbine including flue gas recirculation combustor
AssigneeDoosan Heavy Industries Construction Co., Ltd
InventorsHokeun Kim, Sunghyun Kim, Cheahong Choi
Life of this patent
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Abstract
A flue gas recirculation combustor includes a combustor chamber configured such that fuel and combustion gas are injected therein to cause combustion and having a nozzle-side end and a combustor outlet, a nozzle can connected to the nozzle-side end of the combustor chamber, a plurality of nozzles disposed in the nozzle can and configured such that an injection direction thereof is directed to a side of the combustor chamber, and a sleeve disposed in a premixing space defined between the nozzle can and the nozzle-side end of the combustor chamber, the sleeve including a recirculation pathway to recirculate combustion air from the combustor chamber to the premixing space.
Claims16
A flue gas recirculation combustor comprising:
- a combustor chamber configured to receive fuel and combustion gas to cause combustion, the combustor chamber including
- a nozzle-side end and
- a combustor outlet;
- a nozzle can connected to the nozzle-side end of the combustor chamber;
- a plurality of nozzles disposed in the nozzle can and arranged such that an injection direction thereof is directed to a side of the combustor chamber;
- and
- a sleeve disposed in a premixing space defined between the nozzle can and the nozzle-side end of the combustor chamber, the sleeve including
- a recirculation pathway to recirculate combustion air from the combustor chamber to the premixing space, the recirculation pathway including
- a bypass path and
- an ejector nozzle, the ejector nozzle including
- a nozzle casing,
- an injection control needle assembly disposed in the nozzle casting,
- a combustor flow path connecting at least one point of the nozzle casting and the nozzle-side end of the combustor chamber, and
- a premix flow path connecting a side of the nozzle casting and the premixing space.
A flue gas recirculation combustor comprising:
- a combustor chamber configured to receive fuel and combustion gas to cause combustion, the combustor chamber including a nozzle-side end and a combustor outlet;
- a nozzle can connected to the nozzle-side end of the combustor chamber;
- a plurality of nozzles disposed in the nozzle can and arranged such that an injection direction thereof is directed to a side of the combustor chamber;
- and
- a sleeve disposed in a premixing space defined between the nozzle can and the nozzle-side end of the combustor chamber, the sleeve including
- a plurality of bypass paths and at least one ejector nozzle, wherein
- the ejector nozzle is arranged between one bypass path and a neighboring bypass path, the plurality of bypass paths being arranged at a predetermined interval on an inner surface of the sleeve along a circumferential direction, and the ejector nozzle including
- a nozzle casting,
- an injection control needle assembly disposed in the nozzle casting,
- a combustor flow path connecting at least one point of the nozzle casting and the nozzle-side end of the combustor chamber, and
- a premix flow path connecting a side of the nozzle casting and the premixing space.
A flue gas recirculation combustor comprising:
- a combustor chamber configured to receive fuel and combustion gas to cause combustion, the combustor chamber including a nozzle-side end and a combustor outlet;
- a nozzle can connected to the nozzle-side end of the combustor chamber;
- a plurality of nozzles disposed in the nozzle can and arranged such that an injection direction thereof is directed to a side of the combustor chamber:
- and
- a sleeve disposed in a premixing space defined between the nozzle can and the nozzle-side end of the combustor chamber, the sleeve including one or more ejector nozzles, the one or more ejector nozzles including
- a nozzle casing,
- an injection control needle assembly disposed in the nozzle casing,
- a combustor flow path connecting at least one point of the nozzle casing and the nozzle-side end of the combustor chamber, and
- a premix flow path connecting a side of the nozzle casing and the premixing space,
- wherein an inlet end of the combustor flow path is connected to the nozzle-side end of the combustor chamber and an outlet end of the combustor flow path is connected to a side of the nozzle casing, the outlet end including
- a combustor pressure path communicating with a space between the partition and the movable member, and
- a recirculation flow path communicating with an injection path in the nozzle casing.
Dependencies are inferred from the claim text.