The present invention relates to an integrated process that enables cost-effective low carbon power production for natural gas combined cycle (NGCC) power plants utilizing the Linde-BASF advanced amine carbon capture technology and hydrogen technologies. The present invention is a flexible carbon capture and storage (FLECCS) system incorporating the NGCC, a post combustion capture (PCC) plant, a proton exchange membrane (PEM) electrolyzer, hydrogen compression and storage tanks.

This is a zero emissions power generation boiler that can be used to drive a wide range of steam turbines, from 20 MW up to 1200 MW, creating dry steam pressure ranging from 1000 psi up to 4500 psi. It creates steam by burning liquid hydrogen with liquid oxygen, completely eliminating the emission of greenhouse gases, lethal poisons, and every form of pollutant. It employs high-pressure cryogenic fuel pumps, a water cooling system, an electronic sparking system, a double-wall cylindrical boiler with a hemispherical top, and a control system that employs electronic sensors, actuators, signal conditions, microprocessors, digital interfaces, and mechanical back-up systems. It can be used in new power plants or as a replacement for current boilers in existing power plants. It has the option of working as part of a combined cycle system and can employ steam reheat systems.

A powerplant is provided that includes an engine and a water recovery system. The engine includes an engine combustor, an engine turbine, a flowpath and a fluid delivery system. The flowpath extends out of the engine combustor and through the engine turbine. The fluid delivery system includes a hydrogen reservoir and an oxygen reservoir. The hydrogen reservoir is configured to store fluid hydrogen as liquid hydrogen. The oxygen reservoir is configured to store fluid oxygen as liquid oxygen. The fluid delivery system is configured to provide the fluid hydrogen and the fluid oxygen for combustion within the engine combustor to produce combustion products within the flowpath. The water recovery system is configured to extract water from the combustion products. The water recovery system is configured to provide the water to a component of the powerplant.

A combined-cycle power plant comprises a gas turbine engine for generating exhaust gas, an electric generator driven by the gas turbine engine, a steam generator receiving the exhaust gas to heat water and generate steam, and a duct burner system configured to heat exhaust gas in the steam generator before generating the steam and that comprises a source of hydrogen fuel, a fuel distribution manifold to distribute the hydrogen fuel in a duct of the steam generator, and an igniter to initiate combustion of the hydrogen fuel in the exhaust gas. A method for heating exhaust gas in a steam generator for a combined-cycle power plant comprises directing combustion gas of a gas turbine engine into a duct, introducing hydrogen fuel into the duct, combusting the hydrogen fuel and the combustion gas to generate heated gas, and heating water in the duct with the heated gas to generate steam.

A hydrogen production system includes: a hydrogen production device connected to an electric power system and configured to produce hydrogen by electrolyzing pure water; an output control unit capable of controlling an amount of power supplied from the electric power system to the hydrogen production device according to request from the electric power system; a first pure water line for supplying pure water to the hydrogen production device; a first adjustment device capable of adjusting an amount of pure water supplied to the hydrogen production device via the first pure water line; and a first control unit configured to control the first adjustment device, based on a power amount signal indicating information on an amount of power supplied from the electric power system to the hydrogen production device.

A power generation system using a combined solar-assisted fuel reformer and oxy-combustion membrane reactor is proposed. The system uses solar heating to activate the endothermic fuel steam reforming reaction. The produced gas is separated into streams of H.sub.2 and CO for separate oxy-combustion reactions. The O.sub.2 used in the oxy-combustion reactions is produced by permeating O.sub.2 through ion transport membranes in contact with solar-heated air.

Provided is an electric power generating system which exhibits favorable energy recovery efficiency compared to the prior art and, further, can generate not only cold heat but also warm heat. In an electric power generating system where working fluid is circulated in a system of a pressure resistant closed circuit while changing a state of the working fluid, power is generated by converting external heat energy given to the working fluid into kinetic energy, and electric power is generated by driving an electric power generator by the power, a pressure resistant closed circuit is formed of a main circuit and a sub circuit, the main circuit includes an evaporation chamber, an adiabatic expansion chamber, a power generating part, a warming-use heat exchange mechanism, and a liquefied working fluid return means, and the sub circuit includes a heating medium divided flow path, a liquefied auxiliary fluid supply path, a cooling equipment, a second-fluid-to-be-warmed supply path, a warming equipment, and a return flow compression means.

Provided is an electric power generating system which exhibits favorable energy recovery efficiency compared to the prior art and, further, can generate not only cold heat but also warm heat. In an electric power generating system where working fluid is circulated in a system of a pressure resistant closed circuit while changing a state of the working fluid, power is generated by converting external heat energy given to the working fluid into kinetic energy, and electric power is generated by driving an electric power generator by the power, a pressure resistant closed circuit is formed of a main circuit and a sub circuit, the main circuit includes an evaporation chamber, an adiabatic expansion chamber, a power generating part, a warming-use heat exchange mechanism, and a liquefied working fluid return means, and the sub circuit includes a heating medium divided flow path, a liquefied auxiliary fluid supply path, a cooling equipment, a second-fluid-to-be-warmed supply path, a warming equipment, and a return flow compression means.

A system includes a combustion power plant for generating power and an electrolysis unit for producing hydrogen. The combustion power plant has a combustion chamber for combustion of a fuel and an offgas conduit for leading off hot offgases formed in the combustion of the fuel. The offgas conduit is thermally coupled to the electrolysis unit. A method for operating the system includes burning the fuel in the combustion power plant, forming the hot offgases in the combustion of the fuel, removing the hot offgases through the offgas conduit, feeding the thermal energy of the hot offgases from the offgas conduit to the electrolysis unit, and producing hydrogen in the electrolysis unit by using the thermal energy from the hot offgases.

A steam generator system configured to burn hydrogen and oxygen at stoichiometry along with a high-pressure water and steam. Said steam generator system comprise a hydrogen source, an oxygen source, a nitrogen source, a water source, a steam source, a hydrogen-oxygen handling unit, a cooling unit, a one or more H2-O2 steam generators and a control unit. Said steam generator system is configured to provide said hydrogen source to said hydrogen-oxygen handling unit through an oxygen passage, said oxygen source to said hydrogen-oxygen handling unit through a hydrogen passage, and said nitrogen source to selectively purge said oxygen passage and said hydrogen passage. Said water source provide water to said cooling unit. Said cooling unit is configured to receive said water source and said steam source.