Abstract: A gasifier includes a combustion chamber in which a fuel is burned to produce a syngas and a particulated solid residue. A quench chamber having a liquid coolant is disposed downstream of the combustion chamber. A dip tube couples the combustion chamber to the quench chamber. The syngas is directed from the combustion chamber to the quench chamber via the dip tube to contact the liquid coolant and produce a cooled syngas. A draft tube surrounds the dip tube such that an annular passage is formed between the draft tube and the dip tube. An asymmetric or symmetric faceted baffle is disposed proximate to an exit path of the quench chamber. The cooled syngas is directed through the annular passage and impacted against the baffle so as to remove entrained liquid content from the cooled syngas before the cooled syngas is directed through the exit path.

Abstract: A method for transporting a solid particulate within a gasifier system is provided. The method includes discharging solid particulate through an inlet into an opening defined within a rotor, wherein the inlet and the solid particulate are at a first pressure. The method further includes rotating the rotor such that at least one end of the opening is aligned in flow communication with a duct at a second pressure that is different from the first pressure. The solid particulate is discharged from the rotor opening through an outlet such that the solid particulate is at the second pressure, and the rotor is rotated such that at least one end of the rotor opening is aligned in flow communication with a pressure source that is at approximately the first pressure, and such that the opening is at the first pressure.

Abstract: Embodiments of the present disclosure are directed to a fuel preparation system. The feedstock preparation system includes an acoustic chamber configured to receive a fuel and at least one acoustic wave generator configured to generate acoustic waves to at least partially break up the fuel in the acoustic chamber.

Abstract: A system includes a solid feed fuel pump configured to route a solid fuel flow from an inlet to an outlet. The solid feed fuel pump includes an actuated valve that is disposed within the outlet. The actuated valve is configured to adjust a compaction of the solid fuel flow while in the outlet. The actuated valve adjusts the compaction in response to active control based on sensed feedback from the system.

Abstract: According to various embodiments, a system includes a solid feed pump. The solid feed pump includes a housing, a rotor disposed in the housing, a curved passage disposed between the rotor and the housing, an inlet coupled to the curved passage, an outlet coupled to the curved passage, a solid feed guide extending across the curved passage, and a thermal control path through a portion of the solid feed pump.

Abstract: A system includes a fluidization device including a flow passage configured to convey a flow of solid fuel particles in a downstream direction, and a body disposed within the flow passage. The body is configured to direct the flow of solid fuel particles between the body and an outer wall of the flow passage. The fluidization device also includes a carrier gas injection port positioned radially outward from the body. The carrier gas injection port is configured to provide a flow of carrier gas in the downstream direction to break up agglomerations within the flow of solid fuel particles.

Abstract: Disclosed is a method of removing a particulate layer from a gasification system component including locating a shedding apparatus in operable communication with the gasification system component. A force is transmitted from the shedding apparatus into the gasification system component and the particulate layer is shed from the gasification system component as a result of the force. Further disclosed is a syngas cooler for a gasification system including a vessel and a plurality of thermal energy transfer platens located in the vessel. A shedding apparatus is in operable communication with the plurality of platens and is capable of shedding a particulate layer from the plurality of platens by transmitting a force to the plurality of platens. The apparatus includes a manifold disposed between the shedding apparatus and the plurality of platens and connected to the plurality of platens via one or more struts capable of distributing the force to the plurality of platens.

Abstract: A gasifier includes a combustion chamber in which a fuel is burned to produce a syngas and a particulated solid residue. A quench chamber is disposed downstream of the combustion chamber. A dip tube is disposed coupling the combustion chamber to the quench chamber. The syngas is directed to contact liquid coolant in the quench chamber and produce a cooled syngas. A draft tube is disposed surrounding the dip tube such that an annular passage is formed. A baffle is disposed proximate to an exit path of the quench chamber. The cooled syngas is directed through the annular passage and impacted against the baffle so as to remove entrained liquid content from the cooled syngas before it is directed through the exit path. A cross sectional area of the annular passage is smaller towards the bottom of the quench chamber and larger towards the top of the quench chamber.

Abstract: A gasifier includes a combustion chamber in which a fuel is burned to produce a syngas and a particulated solid residue. A quench chamber having a liquid coolant is disposed downstream of the combustion chamber. A dip tube couples the combustion chamber to the quench chamber. The syngas is directed from the combustion chamber to the quench chamber via the dip tube to contact the liquid coolant and produce a cooled syngas. A draft tube surrounds the dip tube such that an annular passage is formed between the draft tube and the dip tube. An asymmetric or symmetric faceted baffle is disposed proximate to an exit path of the quench chamber. The cooled syngas is directed through the annular passage and impacted against the baffle so as to remove entrained liquid content from the cooled syngas before the cooled syngas is directed through the exit path.

Abstract: A system for heating and drying a quantity of coal feedstock being channeled to a gasifier includes a first heat exchanger coupled in flow communication with the gasifier for transferring heat from an input stream to an output stream of heat transfer fluid, and a second heat exchanger positioned downstream from the first heat exchanger for receiving the output stream of heat transfer fluid from the first heat exchanger, said second heat exchanger transfers heat from the output stream of heat transfer fluid to a stream of heating gas.

Abstract: In one embodiment, a system includes a posimetric pump guide configured to mount in a port of a posimetric pump. The posimetric pump guide includes a first flow splitter defining first and second distribution channels into first and second passages in the posimetric pump. The first flow splitter includes a first pair of shroud walls spaced apart about a first disc opening. The posimetric pump guide also includes an abutment extending crosswise to the first flow splitter.

Abstract: A method and system for preheating a vessel that includes an area of excess heat and a flow of purge fluid that is channeled to an area to be purged wherein the purge fluid is deficient of heat are provided. The system includes a cooling tube assembly positioned between the area of excess heat and the area to be purged and a first heat exchanger coupled in flow communication to the cooling tube assembly, the first heat exchanger configured to transfer heat between a flow of cooling fluid through the cooling tube assembly and the flow of purge fluid wherein the flow of cooling fluid through the cooling tube assembly is maintained sub-cooled and the flow of purge fluid is heated to facilitate reducing a thermal stress in the area purged.

Abstract: A pump used in a gasification system, the pump comprises a housing having an inlet and an outlet, a rotor supported within the housing for rotation relative to the housing, the rotor comprising a hub, a plurality of disks spaced apart by sections of the hub, and defining a plurality of transport channels for transporting solid carbonaceous feedstocks for the gasification system, and an interior feedstock facing surface adjacent to the solid carbonaceous feedstocks, wherein at least a portion of the interior feedstock facing surface is coated with a coating.

Abstract: A system includes a solid feed fuel pump. The solid feed fuel pump includes a solid feed flow path configured to route a solid fuel flow from an inlet to an outlet. The solid feed fuel pump also includes a vent including a filter, wherein the vent is configured to discharge fluid flow that is opposing the solid fuel flow.

Abstract: According to various embodiments, a system includes a fluidization elbow. The fluidization elbow includes an elbow inlet, an elbow outlet downstream from the elbow inlet, and an elbow body disposed between the elbow inlet and the elbow outlet, wherein the elbow body turns and converges from the elbow inlet toward the elbow outlet. The fluidization elbow also includes multiple gas nozzles coupled to the elbow body, wherein the multiple gas nozzles include injection axes that generally converge toward the elbow outlet.

Abstract: Disclosed is a feed system for a gasifier including a grinding mechanism capable of grinding a feedstock into particles of desired particle sizes. The particle sizes include solids particles larger than a first threshold size and raw fines particles smaller than a second threshold size. At least one solids separation device is capable of separating the solids particles from the fines particles and at least one solids conduit conveys the solids particles to a gasification plant while the fines particles are also conveyed to the gasification plant. Further disclosed is a method for feeding stock into a gasifier including conveying a feedstock into a grinding mechanism and grinding the feedstock into particles of desired sizes. Solids particles larger than a first threshold size are separated from fines particles smaller than a second threshold size and the solids particles and the fines particles are conveyed toward the gasification plant.

Abstract: A gasification apparatus includes a pressure wave pulverizer and a gasifier. The pressure wave pulverizer includes a first gas flow generator and a passage with a pulverizer inlet, a pulverizer outlet, and a gas inlet. The pulverizer inlet is supplied with the solid feedstock. The passage includes a gas acceleration section. The gas flow generator is configured to draw high speed gas through the gas inlet so as to induce pressure waves in the gas acceleration section thereby drying the solid feedstock and disintegrating the solid feedstock into particles. The gasifier is in flow communication with the pulverizer outlet.

Abstract: According to various embodiments, a system includes a solid feed pump. The solid feed pump includes a housing, a rotor disposed in the housing, a curved passage disposed between the rotor and the housing, an inlet coupled to the curved passage, an outlet coupled to the curved passage, a solid feed guide extending across the curved passage, and a thermal control path through a portion of the solid feed pump.

Abstract: A gasification system including a first feed line, a second feed line, a stabilization fuel line, and a fuel feed system controller including a processor. The processor is programmed to enable the stabilization fuel line to inject a stabilization fuel into a gasifier to initiate a stabilizer flame inside the gasifier, enable the first feed line to inject a dry fuel into the gasifier at a start-up dry fuel flow rate, increase the flow rate of the dry fuel from the start-up dry fuel flow rate to a normal operating condition (NOC) dry fuel flow rate, decrease a flow rate of the stabilization fuel as the flow rate of the dry fuel increases to the NOC dry fuel flow rate, and prevent the stabilization fuel line from injecting the stabilization fuel into the gasifier once the flow rate of the dry fuel is at the NOC dry fuel flow rate.

Abstract: A lubricating pump system and a lubrication injection apparatus for a pump of such a system. The pump conveys material, including bulk solids material. A lubricant reservoir stores a lubricant. The lubrication injection apparatus delivers lubricant from the lubricant reservoir to a surface portion of the pump along which material is conveyed.