Abstract: A water transfer assembly for use in a fuel cell system having an anode and a cathode, the anode being adapted to receive fuel and to output anode exhaust and the cathode being adapted to receive oxidant gas and to output cathode exhaust, the water transfer assembly comprising a first cooling assembly adapted to receive the cathode exhaust and to quench cool the cathode exhaust to recover a first portion of water including non-volatile contaminants from the cathode exhaust and to output cleansed cathode exhaust and the first water portion, and a second cooling assembly adapted to receive the cleansed cathode exhaust and to recover a second water portion from the cleansed cathode exhaust, the second water portion being suitable for humidifying the fuel supplied to the anode.

Abstract: A water recovery assembly for use in a fuel cell system having an anode and a cathode, the anode being adapted to receive fuel and output anode exhaust, the water recovery assembly comprising a first cooling assembly adapted to receive and quench cool the anode exhaust and to recover a first portion of water including electrolyte from the anode exhaust, and to output quenched anode exhaust and the first portion of water, and a second cooling assembly adapted to receive the quenched anode exhaust and to recover a second portion of water from the quenched anode exhaust, the second portion of water being suitable for humidifying the fuel supplied to the anode.

Abstract: A flow control assembly for use in a fuel cell system, comprising a sensor for sensing hydrogen concentration in one of anode exhaust leaving an anode side of the fuel cell system and a gas derived from the anode exhaust, and a fuel flow control assembly for controlling the flow of fuel to the anode side of the fuel cell system based on the hydrogen concentration sensed by the sensor.

Abstract: An integrated power production system including a fossil fuel power plant for processing fossil based fuel such as coal or natural gas arranged in tandem with a carbonate fuel cell having an anode and a cathode section. The flue gas of the power plant serves exclusively as the inlet gas for the cathode section of the fuel cell. Anode exhaust gas leaving the anode section of the fuel cell is subjected to processing including sequestration of the carbon dioxide in the exhaust gas.

Abstract: A methanation assembly for use with a water supply and a gas supply containing gas to be methanated in which a reactor assembly has a plurality of methanation reactors each for methanating gas input to the assembly and a gas delivery and cooling assembly adapted to deliver gas from the gas supply to each of said methanation reactors and to combine water from the water supply with the output of each methanation reactor being conveyed to a next methanation reactor and carry the mixture to such next methanation reactor.

Abstract: A fuel cell system having a fuel cell with an anode compartment and a cathode compartment. The fuel cell system is also provided with a partial-pressure pressure swing adsorption assembly operating at low pressure which uses supply gas for the cathode compartment of the fuel cell to separate carbon dioxide from the anode exhaust gas exiting from the anode compartment of the fuel cell. The partial-pressure pressure swing adsorption assembly is adapted to carry out this separation based on the difference in partial pressures of the carbon dioxide in the anode exhaust gas and the oxidant gas in the supply gas. The fuel cell system utilizes a further unit to recycle the exhaust gas, after separation of the carbon dioxide, to the anode compartment and to feed the supply gas with the carbon dioxide to the cathode compartment.

Abstract: A fuel cell system having a fuel cell with an anode compartment and a cathode compartment. The fuel cell system is also provided with a partial-pressure pressure swing adsorption assembly operating at low pressure which uses supply gas for the cathode compartment of the fuel cell to separate carbon dioxide from the anode exhaust gas exiting from the anode compartment of the fuel cell. The partial-pressure pressure swing adsorption assembly is adapted to carry out this separation based on the difference in partial pressures of the carbon dioxide in the anode exhaust gas and the oxidant gas in the supply gas. The fuel cell system utilizes a further unit to recycle the exhaust gas, after separation of the carbon dioxide, to the anode compartment and to feed the supply gas with the carbon dioxide to the cathode compartment.

Abstract: Hydrocarbonaceous fuel, such as coal, oil or gas, is gasified to produce syngas comprising H2 and CO, scrubbed free of particles, and saturated with water. The syngas is then treated in an acid gas removal unit as desired to remove any impurities in the syngas. After processing the syngas in the AGR, it is routed to a hydrocarbon synthesis reactor. In the hydrocarbon synthesis reactor, the bulk of the H2 and CO in the syngas is converted to synthetic hydrocarbons, the makeup of which is generally dependent on the type catalyst used in the reactor. The unreacted gas, or tailgas, exiting the reactor, is sent to the gas turbine as fuel. Optionally, N2 or natural gas can be added to the tailgas prior to the combustion turbine. N2 may also optionally be mixed with the hydrocarbon synthesis reactor feed to help control the reaction temperature. After being combusted in the combustor of a gas turbine, the combustion products are expanded to produce power.

Abstract: Hydrocarbonaceous fuel, such as coal, oil or gas, is gasified to produce syngas comprising H2 and CO, scrubbed free of particles, and saturated with water. The syngas is then treated in an acid gas removal unit as desired to remove any impurities in the syngas. After processing the syngas in the AGR, it is routed to a hydrocarbon synthesis reactor. In the hydrocarbon synthesis reactor, the bulk of the H2 and CO in the syngas is converted to synthetic hydrocarbons, the makeup of which is generally dependent on the type catalyst used in the reactor. The unreacted gas, or tailgas, exiting the reactor, is sent to the gas turbine as fuel. Optionally, N2 or natural gas can be added to the tailgas prior to the combustion turbine. N2 may also optionally be mixed with the hydrocarbon synthesis reactor feed to help control the reaction temperature. After being combusted in the combustor of a gas turbine, the combustion products are expanded to produce power.

Abstract: An apparatus and a process for cooling a feed injector of a gasification reactor that produces synthesis gas is described. Cooling fluid is injected into a channel in the feed injector adapted for circulating the fluid. The injection pressure is maintained near or above the gasification reactor pressure. The fluid is withdrawn from the channel through an outlet at an outlet pressure between about 515 KPa above to about 1030 KPa below the gasification reactor pressure. The fluid is cooled, degassed, and injected back into the channel in the feed injector. The pressure on the cooling system is variable and tracks the gasification reactor pressure.