There are provided an injector and an associated method for injecting and mixing gases, comprising a carbonaceous fuel and oxygen, in a combustion chamber of a combustion device. The injector has jets, which can be used to separately inject different combustion fuels. The injector is compatible with
There are provided an injector and an associated method for injecting and mixing gases, comprising a carbonaceous fuel and oxygen, in a combustion chamber of a combustion device. The injector has jets, which can be used to separately inject different combustion fuels. The injector is compatible with combustion devices that inject only gases, for example, a reheater that provides initial combustion in a power generation cycle or a reheater that recombusts a discharged gas from a gas generator and turbine. Further, the injector defines an annular space through which a recycle gas can be injected into the combustion chamber to lower the combustion temperature.
대표청구항▼
1. An injector for injecting combustion fluids into a combustion chamber, comprising: an injector body defining a first annular space between the injector body and a first sleeve, said injector body comprising an injector face facing the combustion chamber, and defining a main bore, at least one mai
1. An injector for injecting combustion fluids into a combustion chamber, comprising: an injector body defining a first annular space between the injector body and a first sleeve, said injector body comprising an injector face facing the combustion chamber, and defining a main bore, at least one main jet extending from the injector face to the main bore, a first plurality of fuel jets opening through the injector face, a first fuel inlet fluidly connected to the first plurality of fuel jets, a second plurality of fuel jets opening through the injector face, and a second fuel inlet fluidly connected to the second plurality of fuel jets, wherein each of the second plurality of fuel jets has a smaller cross sectional area than each of the first plurality of fuel jets. 2. An injector according to claim 1 wherein the first annular space is fluidly connected to a source of a recycle gas comprising steam and carbon dioxide. 3. An injector according to claim 1 further comprising a recycle gas inlet and a second sleeve, the second sleeve defining an interior side and positioned to define a second annular space between the interior side of the second sleeve and an outer surface of the first sleeve, and wherein the first sleeve defines at least one first sleeve aperture fluidly connecting the first annular space to the second annular space and the second sleeve defines at least one second sleeve aperture fluidly connecting the second annular space to the recycle gas inlet. 4. An injector according to claim 3 further comprising a circumferential passage extending about the perimeter of the second sleeve and wherein the circumferential passage fluidly connects the second annular space to the recycle gas inlet such that gas enters the recycle gas inlet and generally flows in a first direction in the second annular space and a second direction in the first annular space, the second direction opposite to the first direction. 5. An injector according to claim 1 wherein the main bore is fluidly connected to a source of oxidizing fluid substantially free of nitrogen and sulfur. 6. An injector according to claim 1 wherein the first fuel inlet is fluidly connected to a first source of fuel. 7. An injector according to claim 6 wherein the first source of fuel comprises a synthesis gas of hydrogen and carbon monoxide. 8. An injector according to claim 1 wherein the injector body further defines a first fuel manifold fluidly connected to the first plurality of fuel jets. 9. An injector according to claim 8 wherein the first fuel manifold comprises an annular fuel space that extends circumferentially around at least one of the main jets and a central chamber between the main jets and fluidly connected to the annular fuel space. 10. An injector according to claim 1 wherein the central axis of each of the first plurality of fuel jets defines a converging angle of between about 10° and 45° relative to the central axis of one of the at least one main jets such that fluid flowing from the injector body into the combustion chamber through each of the first plurality of fuel jets impinges on a stream of fluid flowing from the respective main jet in the combustion chamber. 11. An injector according to claim 1 wherein the injector body defines at least one coolant chamber configured to receive and circulate a coolant fluid for cooling the injector body. 12. An injector according to claim 1 wherein a center of each of the main jets is located at least about 4 inches from centers of the other main jets. 13. An injector according to claim 1 wherein each of the main jets has a diameter of at least about 1 inch at the injector face. 14. An injector according to claim 1 wherein the injector body further defines a second fuel manifold fluidly connected to the plurality of fuel jets. 15. An injector according to claim 14 wherein the fuel manifold defines at least one annular space that extends circumferentially around at least one of the main jets. 16. An injecto r according to claim 1 wherein the second fuel inlet is fluidly connected to a second source of fuel. 17. An injector according to claim 16 wherein the second source of fuel comprises methane. 18. An injector according to claim 1 wherein the central axis of each of the second plurality of fuel jets defines a converging angle of between about 10° and 45° relative to the central axis of one of the at least one main jets such that fluid flowing from the injector body into the combustion chamber through each of the second plurality of fuel jets impinges on a stream of fluid flowing from the respective main jet in the combustion chamber. 19. An injector according to claim 1 wherein the main bore is fluidly connected to a source of gaseous oxygen, at least one of the first and second fuel inlets is fluidly connected to a source of gaseous fuel, and the first annular space is fluidly connected to a source of a recycle gas comprising steam and gaseous carbon dioxide. 20. An injector for injecting combustion fluids into a combustion chamber, comprising: an injector body defining a first annular space between the injector body and a first sleeve, said injector body comprising an injector face facing the combustion chamber, and defining a main bore, at least one main jet extending from the injector face to the main bore, a first plurality of fuel jets opening through the injector face, a first fuel inlet fluidly connected to the first plurality of fuel jets, a second plurality of fuel jets opening through the injector face, and a second fuel inlet fluidly connected to the second plurality of fuel jets, wherein a respective one of the fuel jets defines a converging angle relative to a respective main jet such that fluid flowing from the injector body into the combustion chamber through the respective fuel jet impinges on a stream of fluid flowing from the respective main jet in the combustion chamber. 21. An injector according to claim 20 wherein the first annular space is fluidly connected to a source of a recycle gas comprising steam and carbon dioxide. 22. An injector according to claim 20 further comprising a recycle gas inlet and a second sleeve, the second sleeve defining an interior side and positioned to define a second annular space between the interior side of the second sleeve and an outer surface of the first sleeve, and wherein the first sleeve defines at least one first sleeve aperture fluidly connecting the first annular space to the second annular space and the second sleeve defines at least one second sleeve aperture fluidly connecting the second annular space to the recycle gas inlet. 23. An injector according to claim 22 further comprising a circumferential passage extending about the perimeter of the second sleeve and wherein the circumferential passage fluidly connects the second annular space to the recycle gas inlet such that gas enters the recycle gas inlet and generally flows in a first direction in the second annular space and a second direction in the first annular space, the second direction opposite to the first direction. 24. An injector according to claim 20 wherein the main bore is fluidly connected to a source of oxidizing fluid substantially free of nitrogen and sulfur. 25. An injector according to claim 20 wherein the first fuel inlet is fluidly connected to a first source of fuel. 26. An injector according to claim 25 wherein the first source of fuel comprises a synthesis gas of hydrogen and carbon monoxide. 27. An injector according to claim 20 wherein the injector body further defines a first fuel manifold fluidly connected to the first plurality of fuel jets. 28. An injector according to claim 27 wherein the first fuel manifold comprises an annular fuel space that extends circumferentially around at least one of the main jets and a central chamber between the main jets and fluidly connected to the annular fuel space. 29. An injector according to claim 20 wherein the central axis of each of the fi rst plurality of fuel jets defines a converging angle of between about 10° and 45° relative to the central axis of one of the at least one main jets such that fluid flowing from the injector body into the combustion chamber through each of the first plurality of fuel jets impinges on a stream of fluid flowing from the respective main jet in the combustion chamber. 30. An injector according to claim 20 wherein the injector body defines at least one coolant chamber configured to receive and circulate a coolant fluid for cooling the injector body. 31. An injector according to claim 20 wherein a center of each of the main jets is located at least about 4 inches from centers of the other main jets. 32. An injector according to claim 20 wherein each of the main jets has a diameter of at least about 1 inch at the injector face. 33. An injector according to claim 20 wherein the injector body further defines a second fuel manifold fluidly connected to the second plurality of fuel jets. 34. An injector according to claim 33 wherein the second fuel manifold defines at least one annular space that extends circumferentially around at least one of the main jets. 35. An injector according to claim 20 wherein the second fuel inlet is fluidly connected to a second source of fuel. 36. An injector according to claim 35 wherein the second source of fuel comprises methane. 37. An injector according to claim 20 wherein the central axis of each of the second plurality of fuel jets defines a converging angle of between about 10° and 45° relative to the central axis of one of the at least one main jets such that fluid flowing from the injector body into the combustion chamber through each of the second plurality of fuel jets impinges on a stream of fluid flowing from the respective main jet in the combustion chamber. 38. An injector according to claim 20 wherein the main bore is fluidly connected to a source of gaseous oxygen, at least one of the first and second fuel inlets is fluidly connected to a source of gaseous fuel, and the first annular space is fluidly connected to a source of a recycle gas comprising steam and gaseous carbon dioxide.
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