Abstract: A gas cleaning system for removing at least a portion of contaminants, such as halides, sulfur, particulates, mercury, and others, from a synthesis gas (syngas). The gas cleaning system may include one or more filter vessels coupled in series for removing halides, particulates, and sulfur from the syngas. The gas cleaning system may be operated by receiving gas at a first temperature and pressure and dropping the temperature of the syngas as the gas flows through the system. The gas cleaning system may be used for an application requiring clean syngas, such as, but not limited to, fuel cell power generation, IGCC power generation, and chemical synthesis.

Abstract: A gas cleaning system for removing at least a portion of contaminants, such as halides, sulfur, particulates, mercury, and others, from a synthesis gas (syngas). The gas cleaning system may include one or more filter vessels coupled in series for removing halides, particulates, and sulfur from the syngas. The gas cleaning system may be operated by receiving gas at a first temperature and pressure and dropping the temperature of the syngas as the gas flows through the system. The gas cleaning system may be used for an application requiring clean syngas, such as, but not limited to, fuel cell power generation, IGCC power generation, and chemical synthesis.

Abstract: A method of retrofitting a power generation system having a coal-fired steam boiler, a steam turbine system, and a condenser comprising installing a hydrogen-fired combustion system therein having the step of replacing the coal-fired steam boiler with a hydrogen-fired combustion system such that a steam flow generated by the hydrogen-fired combustion system is directed to the steam turbine system. Another method of retrofitting a power generation system has the steps of installing a hydrogen-fired combustion system to receive the steam flow, a hydrogen stream, and an oxygen stream, and to produce a super-heated steam flow therefrom; and installing a new steam turbine system capable of receiving and expanding said super-heated steam flow and directing said expanded super-heated steam flow to at least a portion of said original steam turbine system.

Abstract: A method of retrofitting a power generation system having a coal-fired steam boiler, a steam turbine system, and a condenser comprising installing a hydrogen-fired combustion system therein having the step of replacing the coal-fired steam boiler with a hydrogen-fired combustion system such that a steam flow generated by the hydrogen-fired combustion system is directed to the steam turbine system. Another method of retrofitting a power generation system has the steps of installing a hydrogen-fired combustion system to receive the steam flow, a hydrogen stream, and an oxygen stream, and to produce a super-heated steam flow therefrom; and installing a new steam turbine system capable of receiving and expanding said super-heated steam flow and directing said expanded super-heated steam flow to at least a portion of said original steam turbine system.

Abstract: A system and method for generating power by producing a clean gaseous fuel from a solid fuel, such as coal. A flow of oxygen enriched compressed air is formed by combining compressed ambient air from a gas turbine compressor and a flow of oxygen from a air separation unit. The coal is supplied to a gasifier, along with the flow of oxygen enriched compressed air in which the coal is combusted. The gasifier produces a flow of hot gaseous fuel containing slag and other particulate matter. The slag is removed from the hot gaseous fuel and, after processing, forms the bed media for filter that removes particulate matter from the gaseous fuel. The air separation unit also produces a flow of nitrogen. The nitrogen is mixed into the air prior to filtering so as to cool the air. After cooling and cleaning, the gaseous fuel is combusted in the combustor of a gas turbine, thereby generating shaft power.

Abstract: A power plant in which hydrogen and oxygen are combusted to produce a flow of high pressure, high temperature steam. The steam is expanded in a high pressure turbine employing closed steam loop cooling for the stationary vanes and rotating blades. A heat recovery steam generator produces the cooling steam by transferring heat from the expanded steam exhausting from the high pressure turbine to feed water. The cooling steam is directed through cooling passages formed in the vanes and blades of the turbine and the heated cooling steam is collected and returned to the cycle by directing it to the combustors where it serves to moderate temperature. Steam used to cool the intermediate and low pressure vanes and blades of the high pressure turbine is directed to an intermediate pressure turbine for cooling and expansion. An intermediate pressure combustor further heats the cooling steam prior to its expansion in the intermediate pressure turbine.

Abstract: A power plant that combusts hydrogen with oxygen in a high pressure combustor to produce steam, which is mixed with cooling steam before being sent to a high pressure expander, which expands the steam and generates rotating shaft power. The expanded steam is mixed with steam from the combustion of hydrogen and oxygen in an intermediate pressure combustor and expanded in an intermediate pressure turbine, thus generating more rotating shaft power. The steam from the intermediate pressure turbine is fed into a heat recovery steam generator that cools the steam and heats water streams to form cooling steam for at least one of the turbines and the combustors. The now cooled steam exits the steam generator and passes through a low pressure turbine, thereby generating more rotating shaft power, and is condensed into the water streams for heating into cooling steam in the steam generator.