Abstract: A syngas cooler for use in a gasification system is described that includes a head portion including a plurality of conduit headers. The syngas cooler also includes an annular shell portion including a plurality of conduits, the plurality of conduits configured to be coupled in flow communication with the plurality of conduit headers. The syngas cooler also includes a quench portion configured to remove particulates entrained in a flow of syngas flowing through the syngas cooler. The head portion and the shell portion are configured to be coupled together with a circumferential seam weld.

Abstract: In an integrated gasification power plant a steam recovery system is provided. The system enables power generation equipment designed for a predominant fuel and operating condition to efficiently utilize additional steam generation by syngas coolers when heat transfer surface condition or fuel characteristics enable additional steam generation. The system can detect excess steam generation, integrate it with the syngas cleaning process and transmit it to the power generation equipment. The system results in a low cost power generation system which is capable of efficiently operating with a wide range of fuels and a wide rang of operating conditions.

Abstract: In one embodiment, a gasification system component, such as a quench unit or scrubber may retain of pool of a cooling fluid for cooling another fluid. The gasification system component includes a flow damping mechanism designed to dampen flow of the cooling fluid, the other fluid, or both, within the gasification system component. The flow damping mechanism may be disposed in an inner chamber formed between a dip tube and a draft tube or disposed in an outer chamber formed between the walls of the gasification system component and the draft tube. The flow damping mechanism also may be disposed between the inner chamber and the outer chamber.

Abstract: A gasifier includes a combustion chamber in which a combustible fuel is burned to produce a syngas and a particulated solid residue. A cooling chamber having a liquid coolant is disposed downstream of the combustion chamber. A dip tube is disposed coupling the combustion chamber to the cooling chamber. The syngas is directed from the combustion chamber to the cooling chamber via the dip tube to contact the liquid coolant and produce a cooled syngas. An asymmetric or symmetric liquid separator is disposed proximate to an exit path of the cooling chamber and configured to remove entrained liquid content from the cooled syngas directed through the annular passage to the exit path.

Abstract: A system, comprising a seal segment including a cable fastener. The system also includes a syngas cooler component that includes a cable guide, where the cable guide may route a cable coupled to the cable fastener to enable the cable to pull the seal segment into a mounting position.

Abstract: A method and systems for a purged seal for an annular space are provided. The purged seal includes a first baffle element that extends from an inner surface of the annular space into the annular space at an oblique angle and a second baffle element that extends from an outer surface of the annular space above the first baffle element in a direction opposite gravity flow into the annular space wherein the second baffle element extends at an oblique angle. The system also includes a third baffle element that extends from the inner surface above the first baffle element in a direction of gravity flow into the annular space wherein the third baffle element extends into the annular space at an oblique angle with respect to the inner surface and wherein a distal end of the third baffle element is positioned proximate a distal end of the second baffle element.

Abstract: A temperature measurement device includes a first thermocouple mounted on a tubular body that is shielded from the effects of radiation by a radiation shield, and a second, unshielded thermocouple. A difference in the measured temperatures from the first and second thermocouples is compared with calculated temperatures using an iterative process to determine a corrected temperature of the gas stream that estimates and compensates for incident radiation.

Abstract: Methods and a system for shielding cooling tubes in a radiant syngas cooler. The heat shields may prevent direct contact between heated syngas and the cooling tubes. The heat shield may be mounted to a header that also attaches to the cooling tubes. The heat shield may also be separated from the cooling tubes or, alternatively, the heat shield may be coated onto the cooling tubes. Furthermore, prolonged exposure to the heated syngas may corrode the heat shield.

Abstract: A fiber sensor package is disclosed. The fiber sensor package includes an interconnection between a first optical fiber and a second optical fiber within a tubing such that the first and second optical fibers are at least partially disposed within that tubing. A bonding material is disposed across an edge of the interconnection around at least a part of the circumferential surfaces of the first and second fibers, holds rigid the interconnection of the first and second optical fibers. The methods of preparing the package, and the examples of systems benefiting from the fiber sensor package of this invention are also described.

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.

Abstract: Methods and systems for a zero discharge waste water treatment system are provided. The system includes a filtration train including filter media having successively smaller diameter filtration elements, a reverse osmosis apparatus including a pump and a membrane coupled in flow communication with said filtration train, a vapor compressor coupled in flow communication with said reverse osmosis apparatus, and a spray dryer coupled in flow communication with said vapor compressor, said spray dryer configured to separate moisture in a brine solution from particulate suspended in the brine solution.

Abstract: An integrated gasification combined cycle system is provided. The integrated gasification combined cycle system includes an air compressor coupled in flow communication to an air separation unit, a condensate heater coupled in flow communication with the air compressor, and a condenser coupled in flow communication with the condensate heater. The condensate heater and the air compressor are coupled such that a portion of compressed air generated by the air compressor is channeled to the condensate heater. A method of assembling an integrated gasification combined cycle system is also provided.

Abstract: A system may detect a flame about a fuel nozzle of a gas turbine. The gas turbine may have a compressor and a combustor. The system may include a first pressure sensor, a second pressure sensor, and a transducer. The first pressure sensor may detect a first pressure upstream of the fuel nozzle. The second pressure sensor may detect a second pressure downstream of the fuel nozzle. The transducer may be operable to detect a pressure difference between the first pressure sensor and the second pressure sensor.

Abstract: A combined Gasification, methanation and power island steam turbine system. The system includes a gasification portion, the methanation portion and a steam turbine portion. The Gasification portion includes the new heat recovery design and associated controls for obtaining a desired steam to dry gas ration of 1.1-2.2. The methanation portion includes first, second and third methanation reactors and associated heat recovery integrated with a high-pressure, low-pressure superheater, and HP economizers. The power Island steam turbine includes a High pressure, Intermediate pressure, low-pressure steam turbine having an input coupled to an output of the superheaters in Methanation process.

Abstract: A method and system for an integrated gasifier and syngas cooler are provided. The system includes a gasifier including a reaction chamber, a syngas cooler integrally formed with the gasifier and including at least one heat exchanger element, and a transition portion integrally formed with the reaction chamber and the syngas cooler and extending therebetween, the transition portion further including a throat extending between the reaction chamber and the syngas cooler, the transition portion further including a heat exchanger circumscribing the throat.

Abstract: A fuel nozzle for use about an end cap of a combustor. The fuel nozzle may include a flange attached to the end cap, an aperture extending through the flange, a plug positioned in the aperture, and an orifice positioned within the plug.

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 heat flux measurement device includes at least two thermocouples disposed within a front portion of the device at different axial distances from a front wall of the device. A correlation between the measured heat fluxes from the device over a period of time is used to estimate a fouling thickness on a wall, for example, a water wall of a radiant syngas cooler (RSC).

Abstract: A method of providing resistance to intergranular stress corrosion cracking in an alloy material, the method comprising sensitizing the alloy to form carbides, allowing the carbides to precipitate, and applying a heat treatment to replenish a chromium-depleted zone.

Abstract: A method of assembling a synthesis gas (syngas) cooler for a gasification system includes positioning a dip tube within a shell of the syngas cooler. The dip tube is configured to quench the syngas flowing through the shell and/or at least partially channel the syngas through the dip tube. The method also includes coupling an isolation tube to the dip tube such that the isolation tube is substantially concentrically aligned with, and radially outward of, the dip tube. The isolation tube is coupled in flow communication with a purge gas source and is configured to at least partially form a dynamic pressure seal. The method further includes coupling at least one of the isolation tube and the dip tube in fluid communication with a fluid retention chamber. The method also include at least partially filling the fluid retention chamber with fluid, thereby further forming the dynamic pressure seal.