Abstract: The present disclosure provides a feed injector for a gasification system. The feed injector may include an inner tube defining an inner feed passage therein, an intermediate tube defining an intermediate feed passage therein, and an outer tube defining an outer feed passage therein. The outer tube may include an outer tube pipe portion and an outer tube tip portion attached to one another, and the outer tube tip portion may be formed of a ceramic matrix composite, a sintered Silicon Carbide, or a sintered Silicon Nitride. The present disclosure also provides a related method of operating a feed injector of a gasification system as well as a related integrated gasification combined cycle power plant.

Abstract: A system includes a gasification fuel injector. The gasification fuel injector includes a mixing device configured to mix together at least two of a solid stream, a liquid stream, or a gaseous stream, or a combination thereof, to generate a mixture. The mixing device is disposed upstream of a tip portion of the gasification fuel injector, and the mixture is discharged from the tip portion.

Abstract: The present disclosure provides a feed injector for a gasification system. The feed injector may include an inner tube defining an inner feed passage therein, an intermediate tube defining an intermediate feed passage therein, and an outer tube defining an outer feed passage therein. The outer tube may include an outer tube pipe portion and an outer tube tip portion attached to one another, and the outer tube tip portion may be formed of a ceramic matrix composite, a sintered Silicon Carbide, or a sintered Silicon Nitride. The present disclosure also provides a related method of operating a feed injector of a gasification system as well as a related integrated gasification combined cycle power plant.

Abstract: A throat plug for a gasifier vessel includes at least one first cavity being receptive to at least one device located in the at least one first cavity, and at least one second cavity being receptive to a fuel injector.

Abstract: Embodiments of methods and apparatus for providing a sacrificial shield for a fuel injector are provided. According to one example embodiment, a method for shielding a fuel injector associated with a combustion device is provided. The method can include providing at least one shield support device operable to mount to a tip of a fuel injector. The method can also include mounting a plurality of shields to the at least one support device, wherein each of the plurality of shields is spaced apart from each respective adjacent shield by at least one segmentation, and wherein each of the plurality of shields is operable to reduce heat exposure to the tip of the fuel injector.

Abstract: A system includes a gasification fuel injector. The gasification fuel injector includes a mixing device configured to mix together at least two of a solid stream, a liquid stream, or a gaseous stream, or a combination thereof, to generate a mixture. The mixing device is disposed upstream of a tip portion of the gasification fuel injector, and the mixture is discharged from the tip portion.

Abstract: Apparatus for protecting a feed injector and methods of assembly are provided. In one aspect, a method of assembling a feed injector cooling apparatus includes coupling a coolant source in flow communication with a mounting flange, coupling the mounting flange to a first end of a sheath, wherein the sheath circumscribes a feed injector barrel, and coupling a cap to a second end of the sheath, wherein the cap includes a center port through which a feed injector tip projects into a gasifier.

Abstract: A fuel injector for injecting fuel into a gasifier includes a mating end including a nozzle portion and a first flange fixedly coupled to the mating end and having a first receiving hole there through and including a first diaphragm disposed therein. The injector also includes a fuel transmission nozzle displaced at least partially within the mating end and passing through the first receiving hole arranged and configured such that a secondary oxygen channel exists between the fuel transmission nozzle and the mating end, the fuel transmission nozzle being fixedly coupled to the first diaphragm and further including a fuel inlet for receiving fuel for introduction into the gasifier.

Abstract: A fuel injector for injecting fuel into a gasifier includes a mating end including a nozzle portion and a first flange fixedly coupled to the mating end and having a first receiving hole there through and including a first diaphragm disposed therein. The injector also includes a fuel transmission nozzle displaced at least partially within the mating end and passing through the first receiving hole arranged and configured such that a secondary oxygen channel exists between the fuel transmission nozzle and the mating end, the fuel transmission nozzle being fixedly coupled to the first diaphragm and further including a fuel inlet for receiving fuel for introduction into the gasifier.

Abstract: Embodiments of methods and apparatus for providing a sacrificial shield for a fuel injector are provided. According to one example embodiment, a method for shielding a fuel injector associated with a combustion device is provided. The method can include providing at least one shield support device operable to mount to a tip of a fuel injector. The method can also include mounting a plurality of shields to the at least one support device, wherein each of the plurality of shields is spaced apart from each respective adjacent shield by at least one segmentation, and wherein each of the plurality of shields is operable to reduce heat exposure to the tip of the fuel injector.

Abstract: A throat plug for a gasifier vessel includes at least one first cavity being receptive to at least one device located in the at least one first cavity, and at least one second cavity being receptive to a fuel injector.

Abstract: A feed injector for providing feed to a gasifier of an integrated gasification combined cycle system includes: a base leading to a body and terminating in a tip, the tip including an exitway for injecting feed into the gasifier; the tip including a mating of an inner shell disposed within a core insert, with an outer shell in which the core insert is disposed; a plurality of spacers disposed between the core insert and inner shell thus providing an inner annular space, and another plurality of spacers disposed between the core insert and outer shell thus providing an outer annular space; the inner annular space and the outer annular space being in fluid communication at the tip and providing for a flow of coolant from the base to the tip and back to the base. A method of fabrication and an integrated gasification combined cycle power plant are also disclosed.

Abstract: Apparatus for protecting a feed injector and methods of assembly are provided. In one aspect, a method of assembling a feed injector cooling apparatus includes coupling a coolant source in flow communication with a mounting flange, coupling the mounting flange to a first end of a sheath, wherein the sheath circumscribes a feed injector barrel, and coupling a cap to a second end of the sheath, wherein the cap includes a center port through which a feed injector tip projects into a gasifier.

Abstract: A quench ring rim and methods of fabrication are described. In one aspect, a method for fabricating a rim for use in a gasification system includes providing a hollow pipe, forming the pipe into a circular pipe, wherein a first end of the pipe is coupled to an opposite second end of the pipe, and cutting the pipe to form a rim having a desired circumference.