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914
resultados
Última actualización
16/06/2025 [07:01:00]
Resultados 50 a 75 de 914
Resumen de: US2025179010A1
Provide are a urea production method and a urea production apparatus in which hydrogen and oxygen are produced by electrolysis of water in an electrolysis unit, nitrogen is separated and recovered from air in an air separation unit, ammonia is synthesized in an ammonia synthesis unit using hydrogen from the electrolysis unit and nitrogen from the air separation unit as raw materials, carbon dioxide is produced by combusting a fuel in an oxycombustion unit while using at least the oxygen from the electrolysis unit, and urea is synthesized in a urea synthesis unit by using the carbon dioxide and the ammonia as raw materials.
Resumen de: US2025177939A1
Method for controlling an ammonia synthesis converter or a methanol synthesis converter during intermittent availability of a renewable power-dependent hydrogen feed, wherein under a limited or no availability of power the converter effluent is recycled back to the inlet of said converter in a loop, and heated to keep said converter in a hot stand-by mode wherein the temperature in the reaction space remains within a target range.
Resumen de: US2025179674A1
A system (1) for generating hydrogen gas comprises a reaction vessel (101) containing an aqueous solution (102) and a cathode (105) and an anode (107) each positioned at least partly in the reaction vessel (101). The system (1) comprises first and second ultrasonic transducers (215-220) which emit ultrasonic waves in the direction of the cathode (105) and the anode (107) respectively. Each ultrasonic transducer (215-220) is driven by a respective transducer driver (202) to optimise the operation of the system (1) for generating hydrogen gas by sonoelectrolysis.
Resumen de: US2025179977A1
This invention is about a hydrogen-generating device, with low energy consumption and high electrode durability, for diesel cycle engines. The hydrogen-generating device includes an electrolysis cell made of aluminum, containing heat exchanger fins on the outside, an electrolytic solution, two electrodes; a hydrogen transport system to be injected into the engine's air intake system; electronic module for direct voltage control, used in electrolysis, of the electrode polarity alternation time, of the volume of hydrogen in a mixture of constant hydrogen/oxygen composition to be injected into the engine in a variable manner, thus injecting a quantity of up to 10% of the hydrogen:oxygen mixture, in the ratio of 65:35, per liter of diesel consumed, in a volume/volume ratio.
Resumen de: US2025179675A1
A system (1) for generating hydrogen gas comprises a reaction vessel (101) containing an aqueous solution (102) and a cathode (105) and an anode (107) each positioned at least partly in the reaction vessel (101). The system (1) comprises first and second ultrasonic transducers (215-220) which emit ultrasonic waves in the direction of the cathode (105) and the anode (107) respectively. Each ultrasonic transducer (215-220) is driven by a respective transducer driver (202) to optimise the operation of the system (1) for generating hydrogen gas by sonoelectrolysis.
Resumen de: US2025179670A1
The invention relates to a method for operating an electrolyzer (10) for the production of hydrogen and oxygen, comprising a membrane (22), which is permeable to OH ions and separates an anode chamber (14) from a cathode chamber (16), said method comprising at least the following method steps:a) temporary dry operation of the cathode chamber (16),b) temporary diffusion of water molecules through the membrane (22) from the anode chamber (14) into the cathode chamber (16),c) variation of a differential pressure (42) between the cathode chamber (16) and the anode chamber (14) by means of a restrictor valve (46), andd) adjustment of the moistening/wetting of the cathode chamber (16) by adjusting a defined differential pressure (42).
Resumen de: DE102023211891A1
Die vorliegende Anmeldung betrifft Verfahren sowie eine Anlage (10) zur Aufbereitung eines Sauerstoffgases, welches mittels Elektrolyse von Wasser und/oder Wasserdampf erzeugt und als Oxidationsmittel in einer hüttentechnischen Einrichtung (1) eingesetzt wird, wobei das mittels der Elektrolyse erzeugte Sauerstoffgas wenigstens einem Trocknungsschritt unterzogen wird, über welchen die in dem Sauerstoffgas enthaltenen Begleitgase Wasserstoff und Wasser, vorzugsweise quantitativ, entfernt werden
Resumen de: WO2025113866A1
The invention relates to a process (100) for the production of hydrogen from ammonia comprising the following steps: - providing a water feed stream to a water electrolyzer (101); - performing a water electrolysis (102) of the water feed stream in the electrolyzer, producing an oxygen product stream and an electrolysis hydrogen stream; - providing an ammonia feed stream to an ammonia cracking reactor (103); - providing an oxidant stream (105) and performing a combustion reaction (106) with said oxidant stream, thereby generating heat; - in the ammonia cracking reactor, performing an endothermic reaction of ammonia cracking (104) of the ammonia feed stream with said generated heat; characterized in that the oxidant stream comprises at least a portion of the oxygen product stream produced by the water electrolysis of the water feed stream.
Resumen de: WO2025114702A1
There is provided a an apparatus for the photolysis of a target material. The apparatus comprises a chamber arranged to receive a target material, at least one emitter arranged to emit an electromagnetic radiation signal at or towards the target material in use, an electromagnetic field generator configured to generate an electromagnetic field within the chamber in use, and a controller. The controller is configured to control the electromagnetic field generator to generate an electromagnetic field in the presence of the target material, such that the electromagnetic radiation signal emitted by the at least one emitter is incident upon the target material in the presence of the generated electromagnetic field.
Resumen de: WO2025114716A1
A water-electrolyser anode for a proton exchange membrane (PEM) water electrolyser comprises: a transition metal oxychalcogenide catalyst having the formula ABxOy, wherein A is a transition metal and B is a chalcogenide, and wherein 0 < x < 2 and 0 < y < 2. Also provided are a proton exchange membrane (PEM) water electrolyser, a method of water electrolysis, use of a transition metal oxychalcogenide as a catalyst in an oxygen evolution reaction under acidic conditions, and a method of manufacturing an anode for an electrolyser.
Resumen de: WO2025114700A1
A process for preparing an oxygen evolution reaction (OER) catalyst comprises an oxygenated iridium component supported on a particulate solid support, which process comprising the steps of: (i) forming an aqueous mixture comprising a particulate solid support and a solution of a halide-free metal iridate; (ii) reducing the pH of the aqueous mixture to ≤ 5.0 to precipitate an oxygenated iridium component onto the particulate solid support; and (iii) isolating the product of step (ii).
Resumen de: WO2025114571A1
An electrolysis device configured to produce hydrogen gas from water, the electrolysis device comprising a container (4), the container accommodating an aqueous alkaline solution (5), a cathodic electrode (1), and an anodic electrode (2), an electrical current being selectively applied between the cathodic electrode and the anodic electrode, wherein the cathodic electrode and possibly the anodic electrode, is made of a nickel alloy, with a nickel base alloyed with at least one element chosen among chromium, molybdenum, cobalt and iron, wherein the cathodic electrode and the anodic electrode are manufactured by an additive manufacturing process, from respective first and second mixed metallic powder compounds, wherein the cathodic and anodic electrodes exhibit an outer surface comprising a plurality of first surface patterns (6,7).
Resumen de: WO2025114080A1
The invention relates to a process (100) for producing a synthesis product (6), in which gaseous hydrogen (3) is provided by electrolysis (10) of water (1) and is subjected to a reaction (30) with one or more gaseous reactants (4) to form the synthesis product (6), wherein during a first process mode, the hydrogen (3) and the one or more reactants (4) are mixed to obtain a gaseous reaction mixture (5) and the gaseous reaction mixture (5), or a part thereof, is stored under pressure in a storage unit (20), and wherein during a second process mode the gaseous reaction mixture (5), or a part thereof, stored under pressure in the first process mode is taken from the storage unit (20) and fed to the reaction (30) to form the synthesis product (6). The invention also relates to a corresponding plant.
Resumen de: US2025179673A1
A system (1) for generating hydrogen gas comprises a reaction vessel (101) containing an aqueous solution (102) and a cathode (105) and an anode (107) each positioned at least partly in the reaction vessel (101). The system (1) comprises first and second ultrasonic transducers (215-220) which emit ultrasonic waves in the direction of the cathode (105) and the anode (107) respectively. Each ultrasonic transducer (215-220) is driven by a respective transducer driver (202) to optimise the operation of the system (1) for generating hydrogen gas by sonoelectrolysis.
Resumen de: US2025179985A1
A system and method by which energy from ocean waves is converted into hydrogen, and that hydrogen is used to manifest electrical and mechanical energies by an energy consuming device. A portion of the generated electrical power is communicated to water electrolyzers which produce oxygen and hydrogen from water as gases. At least a portion of the generated hydrogen gas is transferred to a transportation ship via a hose-carrying, remotely operated (or otherwise unmanned) vehicle, and subsequently transferred to an energy-consuming module or infrastructure, where a portion of the hydrogen is consumed in order to manifest a generation of electrical energy, a mechanical motion, and/or a chemical reaction.
Resumen de: US2025179671A1
A pressure control system for pressure control of at least two pressurized fluid systems comprises a duct for each fluid system having an inlet connectable to the respective fluid system and an outlet, a pressure control valve arranged within each of the ducts to control the fluid flow from the inlet to the outlet of the duct, wherein the pressure control valves are pilot-operated pressure relief valves having an inlet port for a pilot gas to affect a cracking pressure of the pressure control valves, wherein the pressure control system further comprises a common pilot gas buffer system, which is connected to each of the inlet ports of the pressure control valves for a simultaneous pressure control of the fluid systems.
Resumen de: US2025179672A1
A system (1) for generating hydrogen gas comprises a reaction vessel (101) containing an aqueous solution (102) and a cathode (105) and an anode (107) each positioned at least partly in the reaction vessel (101). The system (1) comprises first and second ultrasonic transducers (215-220) which emit ultrasonic waves in the direction of the cathode (105) and the anode (107) respectively. Each ultrasonic transducer (215-220) is driven by a respective transducer driver (202) to optimise the operation of the system (1) for generating hydrogen gas by sonoelectrolysis.
Resumen de: US2025179941A1
A thermal energy storage system with fluid flow insulation, the system including heated thermal storage blocks positioned within a housing, and a method for operating the thermal energy storage system, including providing a flow of fluid into the housing, the fluid convectively extracting heat from a top region, a side region and a bottom region of the thermal energy storage system, to generate heated fluid that insulates the thermal storage blocks from the housing and a foundation of the thermal energy storage system.
Resumen de: US2025179942A1
An apparatus includes one or more thermal storage blocks that define a radiation chamber and a fluid flow slot positioned above the radiation chamber to define a fluid pathway in a first direction. The apparatus includes a heater element positioned adjacent to the radiation chamber in a second, different direction, wherein the radiation chamber is open on at least one side to the heater element. The apparatus includes a fluid movement system configured to direct a stream of fluid through the fluid pathway in the first direction.
Resumen de: US2025179901A1
A method of producing hydrogen and sequestering carbon or sulfur includes generating a fluid including at least one of water, steam, hydrogen sulfide, carbon dioxide and heat as a byproduct of a surface facility and injecting the fluid into a subsurface formation. The subsurface formation can include a porous rock, in various forms of porosity such as intragranular, intergranular, fracture porosity. The method can further include heating the fluid to stimulate an exothermic reaction of the fluid with components of the subsurface rock formation and produce a hydrogen reaction product and one or more of sulfur minerals from the hydrogen sulfide or carbon minerals from the carbon dioxide. The fluid can be heated to between about 25° C. and about 500° C. The method can also include extracting the hydrogen produced from the reaction of the fluid with the subsurface rock formation and mineralizing sulfur or carbon in the porous rock.
Resumen de: AU2023396734A1
The present invention relates to an ammonia decomposition catalyst and a method for producing same and, more specifically, to an ammonia decomposition catalyst containing alumina (Al
Resumen de: JP2025085515A
【課題】高い効率で水素を発生させることができる鉄基粉末を提供する。【解決手段】Ｃｕ－Ｋα線を用いたＸ線回折の回折ピークの内、α－Ｆｅ結晶の（１１０）回折面に相当する回折強度曲線の半価幅が０．０３°以上０．６０°以下の範囲である水素製造用鉄基粉末。【選択図】なし
Resumen de: JP2025085516A
【課題】高い効率で水素を発生させることができる鉄基粉末を提供する。【解決手段】Ｘ線回折の回折ピークの内、α－Ｆｅ結晶の（１１０）回折面に相当する回折強度曲線から求められる格子面間隔が２．０００Å以上２．１００Å以下の範囲である水素製造用鉄基粉末。【選択図】なし
Resumen de: AU2023359996A1
The invention relates to an electrolysis system (1) for generating hydrogen and oxygen as product gases, comprising an electrolysis module (3) and a process unit (5), wherein the process unit (5) has a reactant line (7) for supplying process water and a product line (9), each of which is connected to the electrolysis module (3), and the process unit (5) is equipped with a thermally insulating insulation device (11), comprising a thermal insulating material (17), such that a slow cooling of the process water is produced during a standstill operation.
Nº publicación: DK202330316A1 04/06/2025
Solicitante:
STIESDAL HYDROGEN AS [DK]
Stiesdal Hydrogen A/S
Resumen de: DK202330316A1
An alkaline electrolyzer comprising a stack (17) of electrolytic cells (1) is used for producing hydrogen gas (8). Each of the cathode compartments (5) comprises a cathode gas outlet (23A) into a cathode electrolyte return conduit (22A), the downstream end (41) of which is connected to a hydrogen purifier (33) configured for providing purified hydrogen gas by removing oxygen from the gas received from the cathode electrolyte return conduit (22A). A cathode gas recirculation system (38) connects a downstream end of the hydrogen purifier (32,33) to an upstream end (40) of the cathode electrolyte return conduit (22A) for supplying purified hydrogen gas to the cathode electrolyte return conduit (22A). Alternatively, or in addition, each of the anode compartments (6) comprises an anode gas outlet (23B) into an anode electrolyte return conduit (22B), the downstream end (41) of which is connected to an oxygen purifier (33), configured for providing purified oxygen gas by removing hydrogen from the gas coming from the anode electrolyte return conduit (22B). An anode gas recirculation system (38) connects a downstream end (41) of the oxygen purifier (33) to an upstream end (40) of the anode electrolyte return conduit (22B) for supplying purified oxygen gas to the anode electrolyte return conduit (22B). By recirculating purified gases through the electrolyte return conduits, the electrolyzer can operated at part load, for example below 10% of the nominal load.
BOPI
Sede Electrónica
