Resumen de: AU2021381703A1

The invention concerns an apparatus for the electrolytic production of hydrogen comprising: - a first chamber (26) filled with water; - a lower part (23); - an upper part (28); - a gas production unit (1) located within the lower part (23) and including an electrolytic cell and a hydrogen nozzle (4); - an electric generator (12) located within the upper part (28); - a first driving mechanism (5-9) located within the first chamber (26); - a hydrogen outlet (18) located in the top part of the first chamber (26); the first chamber (26) being located between the lower and upper parts (23,28) and communicating with the gas unit (1) via the hydrogen nozzle (4), in such a way that hydrogen bubbles may be generated within the water of the first chamber (26) and be directed in an upwards direction due to the buoyancy force acting on the bubbles; the first driving mechanism (5-9) being adapted to be actuated by ascending bubbles; the generator (12) being adapted to be actuated by the first driving mechanism (5-9); and the electrolytic cell being connected to the electric generator (12). The invention also concerns a method for the production of hydrogen comprising the following steps: - generating hydrogen in water via electrolysis, - actuating an upwardly oriented driving mechanism with hydrogen bubbles generated during said electrolysis, - converting the mechanical energy of the driving mechanism into an electrical energy, - using said electrical energy for said electrolysis.

Resumen de: US2023167559A1

An energy storage system and method employ electrolysis to convert excess electrical energy into hydrogen gas and oxygen gas stored in cryogenic flux capacitor units. When needed, the hydrogen and oxygen are liberated from the CFCs and mixed with supercritical CO2 and combusted in a combustion chamber without any nitrogen or air present to form a heated mixture of water and sCO2 that drives a turbine that creates energy that is returned to the power grid. The water in the sCO2 mixture is then extracted and returned to a reservoir for electrolysis when needed again, resulting in a closed system for storing electrical energy.

Resumen de: US2023167562A1

The present invention relates to a carbon-assisted solid oxide electrolysis cell comprising: a cathode, an electrolyte, an anode, and an anode chamber set in the order. The cathode is supplied with water as an oxidant and the reduction reaction occurs. The anode chamber includes carbon fuel and CO2 absorber, supplied with the water as in situ gasification agent, wherein the water assists the gasification of the carbon fuel to generate CO and H2. The O2− ions generated by cathode are transported to the anode through the electrolyte, and react with CO and H2 generated in the anode chamber as oxidant. The CO produced by the carbon gasification reaction partly reacts with water to generate CO2 and H2, while the CO2 absorber promotes the production of H2 by absorbing the CO2 produced by the water gas shift reaction. The present invention can control the internal gas composition of the CA-SOEC anode effectively, improving the performance of the carbon-assisted electrolysis cell and reducing energy consumption. Furthermore, the present invention achieves the simultaneous generation of fuel gas by the cathode and the anode, significantly improving the efficiency of the electrolysis.

Resumen de: US2023167564A1

The disclosure relates, inter alia, to a system comprising: (1) an electric power grid; (2) an electrolyzer generating a first stream of hydrogen in communications link with the electric power grid; (3) hydrogen production means for producing a second stream of hydrogen, said hydrogen production means being a non-electrolyzer in communications link with the electrolyzer; (4) a first conduit leading to a hydrogen user through which hydrogen flows to the hydrogen user; (5) a second conduit connecting the electrolyzer to the first conduit through which hydrogen from the electrolyzer flows to the first conduit at a first location; (6) a third conduit distinct from the second conduit connecting the non-electrolyzer to the first conduit through which hydrogen from the non-electrolyzer flows to the first conduit at a second location distinct from the first location; and (7) means for controlling and maintaining a continuous flow of hydrogen to the hydrogen user.

Resumen de: US2023166968A1

The present disclosure relates to a natural gas reforming system capable of reducing, by using a co-electrolysis device, the emission amount of carbon dioxide produced by reforming natural gas, of supplying heat to a reformer through syngas produced by the co-electrolysis, and of producing additional hydrogen, and a process thereof.

Resumen de: WO2023093012A1

Provided in the present application is a method for a triple-electrode system electrolyzing water to produce hydrogen. The method comprises the following process: assembling an electrolytic cell; and forming a first circuit between a hydrogen evolution cathode plate, an auxiliary electrode plate and an external power source in the electrolytic cell, and also forming a second circuit between the auxiliary electrode plate, an oxygen evolution anode plate and the external power source, so as to enable, by means of the connection of the first circuit and the disconnection of the second circuit, a reaction on the hydrogen evolution cathode plate to prepare hydrogen, and enable, by means of the disconnection of the first circuit and the connection of the second circuit, a reaction on the oxygen evolution anode plate to prepare oxygen. In the same electrolytic cell, three electrodes, i.e. a hydrogen evolution cathode plate, an auxiliary electrode plate and an oxygen evolution anode plate, and an external power source are connected to form two circuits, such that separate preparation of hydrogen and oxygen is realized by means of controlling the connection and disconnection of the two circuits, and therefore the phenomenon of the mixture of prepared hydrogen and oxygen is avoided, thereby reducing the separation cost.

Resumen de: WO2023093957A1

A wind turbine (1) comprising a tower (2), a nacelle (3) mounted rotatably on the tower (2) via a yaw system (8) and a hub (4) carrying one or more wind turbine blades (5) is disclosed. The wind turbine (1) further comprises a generator (23), an AC/DC converter (24) connected to the generator (23) and an electrolysis system (25) connected to a DC power output of the AC/DC converter (24) for producing hydrogen. The electrolysis system (25) is arranged in an up-tower part of the wind turbine (1), e.g. in the nacelle (3). The wind turbine (1) further comprises a hydrogen transport line (6) connected to the electrolysis system (25) for transporting hydrogen produced by the electrolysis system (25) away from the electrolysis system (25), the hydrogen transport line (6) extending along an exterior surface of the tower (2) from the position of the electrolysis system (25) to a lower part of the tower (2).

Resumen de: WO2023094020A1

The invention relates to a method and an apparatus for producing ammonia (13), in which a first hydrogen/nitrogen fraction (6) is provided at a time-varying flow rate in order to form an ammonia synthesis gas (8) which is converted to ammonia in an ammonia synthesis (A), wherein the first hydrogen/nitrogen fraction (6) is supplemented by a second hydrogen/nitrogen fraction (14) in such a way that, during normal operation, the ammonia synthesis gas (8) can always be supplied to the ammonia synthesis (A) at a flow rate which exceeds a predefined minimum value. The characterising feature here is that ammonia (10) produced in the ammonia synthesis (A) is transferred in liquid form to a storage means (Z) from which ammonia (15) is taken and split into hydrogen and nitrogen in order to obtain hydrogen and nitrogen so as to form the second hydrogen/nitrogen fraction (14).

Resumen de: WO2023097028A1

An electrolyzer system includes a multiple-state power input and control circuitry for the multiple-state power input. The control circuitry is configured to obtain a power source metric indicator and, based on the power source metric indicator, determine a hydrogen generation profile for the electrolyzer. The control circuitry is configured to determine, based on the hydrogen generation profile, a selected state from among multiple power states of the electrolyzer system. The control circuitry is configured to cause operation of the electrolyzer system in the selected state.

Resumen de: WO2023096543A1

The invention relates to a method, an electrode and a system for electrochemical hydrogen production from water oxidation and proton reduction. The method for electrochemical hydrogen production from water oxidation and proton reduction by covalently attaching a ruthenium complex onto a conducting material is provided by fluorine-doping a carbon cloth (FCC) and use this as an anode and/or a cathode in an electrochemical cell. The electrode for use in electrochemical hydrogen production from water oxidation Is achieved by that the electrode comprises a ruthenium complex covalently attached onto a conducting material having a pyridine linker with a -CH2-CH2 spacer unit. The system for electrochemical hydrogen production from water oxidation and proton reduction, comprising at least an electrochemical cell having two electrodes, an anode and/or a cathode, where the electrodes comprise a ruthenium complex covalently attached onto a conducting material, is achieved by that the conducting material is made by fluorine-doped carbon cloth (FCC).

Resumen de: WO2023093423A1

Disclosed in the present invention is a heat recovery system for producing hydrogen from a solid oxide electrolytic cell. The heat recovery system comprises a water storage tank, a solar cell panel, low-temperature metal hydrogen storage tanks, an evaporator, high-temperature metal hydrogen storage tanks, a heat exchanger, a solid oxide electrolytic cell, a separator, and a reactor. After water in the water storage tank is sequentially subjected to multi-stage heat exchange through the solar cell panel, the low-temperature metal hydrogen storage tanks, the evaporator, the high-temperature metal hydrogen storage tanks and the heat exchanger, water vapor reaching a working temperature enters the solid oxide electrolytic cell; hydrogen generated after an electrochemical reaction and unused water vapor flow out from a cathode product outlet of the solid oxide electrolytic cell, are first subjected to heat exchange with water vapor to be reacted by means of the heat exchanger, and then enter the separator; one hydrogen outlet I of the separator is connected to the low-temperature metal hydrogen storage tanks and the high-temperature metal hydrogen storage tanks, and heat released in a hydrogen storage process of the hydrogen storage tanks heats water; the other hydrogen outlet II of the separator is connected to the reactor, hydrogen reacts with carbon dioxide in the reactor to generate methane, and reaction heat from methane production is conveyed to the evaporator to heat water;

Resumen de: WO2023094487A1

The present invention is related to a system and method for the removal of carbon dioxide from an atmosphere, more particularly by removing carbon dioxide from an atmosphere using water electrolysis, which produces hydrogen. The system and method are based on improvements related to the electrolyser which is fed by a CO2-rich, post-capture (bi)carbonate solution, wherein said improvements enable isolation of a 85:15 wt.% CO2/O2 gas mixture from the anolyte during operation, with an in line CO2/O2 separation at the anode of the electrolyser.

Resumen de: EP4186995A1

A hydrogen generator with hydrogen leakage self-aware function comprises an electrolytic module, an integrated passageway device, a condensate filter, a humidification cup, a housing, an internal hydrogen sensing component, and a monitoring device. The electrolytic module is configured to electrolyze an electrolyzed water to generate a gas comprising hydrogen. The integrated passageway device comprises gas inlet passageway and a gas outlet passageway. The condensate filter is configured for filtering the gas comprising hydrogen. The humidification cup is configured for humidifying the gas comprising hydrogen. The gas comprising hydrogen flows through the condensate filter and the humidification cup by the way of the integrated passageway device. The internal hydrogen sensing component is configured in the housing for sensing the hydrogen concentration in the housing to generate an internal sensing result. The monitoring device is coupled to the internal hydrogen sensing component. The monitoring device controls the operation of the hydrogen generator according to the internal sensing result to avoid the hydrogen generator from the problem caused by hydrogen.

Resumen de: EP4186996A1

Solid oxide electroyzer cell (SOEC) systems and methods that include a stack of electrolyzer cells configured to receive steam and generate a hydrogen and steam exhaust stream, and a steam recycle blower configured to recycle a portion of the hydrogen and steam exhaust stream back to the stack.

Resumen de: EP4186998A1

The present invention is related to a system and method for the removal of carbon dioxide from an atmosphere, more particularly by removing carbon dioxide from an atmosphere using water electrolysis, which produces hydrogen.The system and method are based on improvements related to the electrolyser which is fed by a CO2-rich, post-capture (bi)carbonate solution, wherein said improvements enable isolation of a 85:15 wt.% CO2/O2 gas mixture from the anolyte during operation, with an in line CO2/O2 separation at the anode of the electrolyser.

Resumen de: AU2021352136A1

This invention relates to an arrangement to optimize the production of hydrogen, the arrangement comprising at least a solar energy unit (12) and a wave and/or tidal energy recovery system (2), which are arranged to produce renewable energy, a water purification unit (5) and an electrolysis unit (9), which is arranged to produce hydrogen from pure water produced by the water purification unit (5), and the electrolysis unit (9) and the water purification unit (5) are powered by the renewable energy produced by the solar energy unit (12) and the wave and/or tidal energy recovery system (2). The arrangement comprises a buffer unit (6), into which pure water is supplied from the water purification unit (5) during periods when the production of the renewable energy exceeds the need of energy of the electrolysis unit (9).

Resumen de: US2023158459A1

A hydrogen permeable membrane comprises a dense layer of a hydrogen permeable metal having first and second faces. The first face of the dense layer has a rough surface which may be formed for example by electrodeposition of a hydrogen permeable metal such as palladium. One or more co-catalysts are provided on the rough surface. The co-catalysts may comprise thin sputtered layers. The one or more co-catalysts have an area density not exceeding 20 µg per cm2; and/or a majority of the co catalysts are in an outer portion of the rough surface, the outer portion of the rough surface being less than one half of a thickness of the rough surface defined by peaks of the rough surface. The membrane may be used in a cell to facilitate chemical reactions including hydrogenation, dehydrogenation and hydrodeoxygenation reactions.

Resumen de: US2023160079A1

-- An electrolysis cell unit capable of efficiently electrolyzing water and carbon dioxide is obtained. An electrolysis cell unit includes at least an electrolysis cell in which an electrode layer and a counter electrode layer are formed with an electrolyte layer interposed therebetween and a discharge path for discharging hydrogen generated in the electrode layer, in which the electrolysis cell being formed in a thin layer on a support and a reverse water-gas shift reaction unit that generates carbon monoxide using carbon dioxide and the hydrogen by a reverse water-gas shift reaction being provided in at least a portion of the discharge path.--

Resumen de: US2023160074A1

An apparatus is provided for generating hydrogen and oxygen through alkaline electrolysis. A process is also provided for generating hydrogen and oxygen through alkaline electrolysis using the apparatus. The apparatus and process are advantageously applied in apparatuses and systems for the accumulation of hydrogen using demineralized water and electric energy, also coming from renewable sources.

Resumen de: US2023159838A1

The present invention discloses a single stage energy efficient process for production of hydrogen enriched/mixed gas at low temperature. More particularly, the present invention discloses a single stage energy efficient process for production of hydrogen enriched compressed natural gas (CNG) or LPG or biogas at low temperature.

Resumen de: US2023159357A1

The ParaDice Process System is the interconnection of a renewable power source to power an ocean water electrolysis apparatus comprising a water container, an electrolysis cell, optionally a precious metal harvesting probe, a filtration system, and a settlement pond wherein the hydrogen generated as a result of electrolysis is supplied to either a hydrogen combustion engine or hydrogen turbine to power an electricity generator thereby creating a renewable zero carbon emission electric power generation system. The hydrogen gas is collected by a chlorine scrubber and transferred to either a hydrogen combustion engine or a hydrogen turbine. Where a hydrogen turbine is embodied the waste heat created therein is used to generate electricity and increase the performance of the filtration system and settlement pond.

Resumen de: WO2023091026A1

A system for producing hydrogen and oxygen through electrolysis using power from a geothermal power plant for production of electricity. The geothermal power plant is located proximity to the electrolysis plant. The geothermal power plant provides the said electrolysis plant with electricity, water, and steam. The plants Are located over wells offshore and built on former offshore oil and gas production platforms.

Resumen de: WO2023088723A1

The invention relates to the field of hydrogen production plant, particularly to a method for producing hydrogen in the hydrogen production plant by using two types of electrolysis systems. The first electrolysis system (ES1) comprises an active DC module (Ma) and at least one first-type electrolyzer (E1), which is configured for producing a first hydrogen output (HO1) by using a first power from the active DC module (Ma), and the second electrolysis system (ES2), comprising a passive DC module (Mp) and at least one second-type electrolyzer (E2), which is configured for producing a second hydrogen output (HO2) by using a second power from the passive DC module (Mp). The method comprises the steps of: in a ramp-up phase, increasing the first hydrogen output (HO1) of the first electrolysis system (ES1); and when the first hydrogen output (HO1) of the first electrolysis system (ES1) crosses a first predefined hydrogen output threshold (HOthres1), switching on the second electrolysis system (ES2), and decreasing the first hydrogen output (HO1) of the first electrolysis system (ES1) to the first predefined hydrogen output threshold (HOthres1) minus the second hydrogen output (HO2), so that an overall hydrogen output (HOtotal) of the hydrogen production plant (HPP) is a sum of the first hydrogen output (HO1) and the second hydrogen output (HO2).

Resumen de: WO2023088734A1

The present invention relates to an electrochemical cell (0) comprising an anode (1), a cathode (2) and an anion-conducting membrane (3) located between the anode (1) and the cathode (2). The invention also relates to the use of the cell (0) in a method for preparing hydrogen (H2) and oxygen (O2) by electrochemically splitting water (H2O). Moreover, the invention relates to an electrolyser (6, 8) comprising a multiplicity of the cells (0), and to a method for producing the electrolyser (6, 8). The aim of the invention is to provide an electrochemical cell (0) by means of which anion-exchange-membrane-based water splitting can be carried out on an industrial scale. The aim is also for the cell to be inexpensive in terms of production and to allow for the energy-efficient preparation of hydrogen and oxygen. The aim is achieved in that at least part of the anode is in the form of a first textile fabric comprising catalytically active textile line structures, and in that the first textile fabric directly contacts the membrane.

Resumen de: WO2023088749A2

The present disclosure relates to an electrolysis system (200) for generating hydrogen, the system comprising an electrolyser (202) comprising an electrolyte water inlet, a first gas outlet (204) and a second gas outlet (206), an electrical generator (212) configured to generate electricity (212), preferably for the electrolyser, said electrical generator (212) being connected to the first and/or second gas outlet (204, 206) of the electrolyser and configured to be powered, at least in part, by gas flow provided via the first and/or second gas outlet, the system further comprising an electrolyte pump (214) for supplying the electrolyser (202) with electrolyte water, wherein the electrical generator (212) is a motor -generator comprising a first mode for generating electricity and a second mode for using electricity to drive the electrolyte pump (214).