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474
results.
Updated on
19/04/2025 [07:09:00]
Results 25 to 50 of 474
Absstract of: WO2025073649A1
The invention relates to a method for producing hydrogen that comprises the following steps: - high-temperature electrolysis of steam in an electrolysis unit (102) taking as input a first flow (F1) comprising steam and a second flow (F2) comprising air, the electrolysis providing a third flow (F3) comprising hydrogen and nitrogen; and - separating the hydrogen and the nitrogen in the third flow (F3), in a purification unit (110), provided to receive the third flow (F3) and provide a fourth flow (F4) essentially comprising hydrogen, and a fifth flow (F5) comprising hydrogen and nitrogen; characterised in that the method further comprises recovering the hydrogen contained in the fifth flow (F5) for the electrolysis. The invention also relates to a system (300) implementing such a method.
Absstract of: WO2025073609A1
The invention relates to a method for synthesizing NH3 with a variable throughput on a system comprising multiple synthesis units connected in parallel. A reactant gas stream comprises H2 which is provided by electrolyzing water with an electric current from a renewable energy. The currently available quantity of H2 varies on the basis of the currently available quantity of renewable energy. On the basis of the currently available quantity of H2 as such, the reactant gas stream is introduced into an individual synthesis unit of the synthesis units or into a plurality of synthesis units or all of the synthesis units in a divided manner in independent sub-streams, NH3 then being synthesized from H2 and N2 in said synthesis unit(s). The invention additionally relates to a system which is configured for carrying out the method.
Absstract of: BE1031991A1
L’invention propose un système et un procédé de régulation du fonctionnement des séparateurs gaz-liquide (GLSan, GLSca) d’un électrolyseur comprenant une pile (10), des séparateurs gaz-liquide anodique et cathodique séparant l’électrolyte et le gaz le long d’un niveau de lessive (lan,lca), le gaz de dioxygène et de dihydrogène s’écoulant de leur chambre respective à travers une vanne de commande de gaz (Van, Vca), caractérisée en ce que la régulation utilise des données de commande représentatives de la pression de gaz anodique (pan) ; la pression de gaz cathodique (pan) ; le niveau de lessive anodique (Ian) ; le niveau de lessive cathodique (Ica) ; pour commander chacune des deux vannes de commande de gaz (Van, Vca) et chacun desdits capteurs permettant d’envoyer des signaux de fonctionnement aux deux vannes de commande de gaz (Van, Vca) pour réguler les pressions de gaz (pan,pca) et les niveaux de lessive (lan,lca) dans le séparateur gaz-liquide anodique (GLSan) et le séparateur gaz-liquide cathodique, (GLSca).
Absstract of: CN118183629A
The present application relates to an integrated process and catalyst for producing hydrogen iodide from hydrogen and iodine. The invention provides a method for producing hydrogen iodide. The process comprises providing a gas phase reactant stream comprising hydrogen and iodine, and reacting the reactant stream in the presence of a catalyst to produce a product stream comprising hydrogen iodide. The catalyst contains at least one selected from the group consisting of nickel, cobalt, iron, nickel oxide, cobalt oxide, and iron oxide. The catalyst is loaded on the carrier.
Absstract of: WO2024178009A2
A hydrogen generating cell comprising an input electrode plate pair, an output electrode plate pair, an additional X plate electrode positioned adjacent the output electrode plate pair, and a plurality of intermediate electrode plates disposed between the input and output electrode plate pairs. A plasma torch is spaced apart from and inductively coupled to the input electrode plate pair. A pulsed DC voltage is applied to the plasma torch and X-plate, while a lower voltage pulsed DC voltage is applied to the input and output electrode plate pair to cause generation of hydrogen gas from an aqueous solution in which the cell is immersed.
Absstract of: SE2250272A1
:The present invention relates to a system and method for producing hydrogen gas is provided The system comprises at least one gas transport vessel which is arranged to transport at least hydrogen up through water by buoyancy, a heat transfer unit connected to an electrolysis unit and arranged to transfer at least a portion of the waste heat from the electrolysis unit to the hydrogen gas that is to be transported by the gas transport vessel.
Absstract of: MX2024010526A
The present disclosure relates to methods and reactors for generating of gas and specifically for generation of oxygen gas and hydrogen gas.
Absstract of: AU2025202132A1
METHODS TO PROVIDE ELECTRIC POWER FROM RENEWABLE ENERGY EQUIPMENT TO AN ELECTRICAL LOAD An HVDC system comprising an AC/DC converter sub-system electrically connected to a renewable energy equipment and a VSC sub-system is provided. A method comprises operating the renewable energy equipment to function as a voltage source to energize an HVDC link between the AC/DC converter sub-system and the VSC sub-system; operating the VSC sub system as a voltage source to energize at least one electrical load electrically connected thereto; if it is determined that the power production rate of the renewable energy equipment is not within a designated parameter, operating the equipment to follow the VSC sub-system such that controlling the AC electric power output influences the power production rate. If it is within the designated parameter, operating the VSC sub-system to follow the renewable energy equipment such that the VSC sub-system adjusts the properties of its AC electric output to match the properties of the electric power generated by the renewable energy equipment.
Absstract of: AU2023363867A1
The invention relates to a method for the synthesis of ammonia (18), in which a gas mixture (make-up gas) (1) comprising hydrogen and nitrogen is provided in a first operating mode with a flow rate that is above a threshold value and in a second operating mode with a flow rate that is below this threshold value in order to form an ammonia synthesis gas (5), which is reacted in an ammonia reactor (R) in at least one first catalyst bed (K1) and in a second catalyst bed (K2), connected to the first catalyst bed, to form a synthesis product (16) containing ammonia, wherein in a cooling device (E3) arranged between the first (K1) and the second catalyst bed (K2), non-reacted ammonia synthesis gas (8) is used as a cooling agent in order to reduce the temperature of an ammonia synthesis gas (12) partially reacted in the first catalyst bed (K1) before it is forwarded to the second catalyst bed (K2), wherein in the second operating mode, the higher the flow rate of the provided make-up gas (1), the greater the reduction in temperature of the partially reacted ammonia synthesis gas (12). What is characteristic is that the ammonia synthesis gas (12) partially reacted in the first catalyst bed (K1) is cooled by indirectly exchanging heat with provided ammonia synthesis gas (8).
Absstract of: WO2025074370A1
An electrocatalytic reactor for conversion of Green House Gas (GHG) emissions into value-added products (VAPs), which includes an electrocatalytic reactor equipped with symmetric or asymmetric electrodes (cathode and anode) that act as electrocatalyst, which are dipped in an electrolytic reaction solution that includes acidified deionised water (H3O+) and a catalyst initiator An external current of 1 to 5 A applied to the electrodes in a voltage range of 1 to 5 V for 3 to 5 hours, which initiates C-C coupling or C-O coupling reactions on the cathode surface forming short-lived cation radical intermediates, wherein the short-lived cation radical intermediates react among themselves, or react with in-situ produced H2 gas, leading to the formation of VAPs such as ethylene, propylene, butadiene, acetic acid, ethyl acetate, ethyl acetate esters, ethoxides, propionaldehyde, ethanol, amides, amines, ammonia, urea, azo-dyes, graphene, MWCNTs, SWCNTs.
Absstract of: WO2025074373A1
An electrocatalytic reactor for conversion of Green House Gas (GHG) emissions that include CO2, CH4 and N2 into p-Xylene and other value-added products (VAPs), wherein the electrocatalytic reactor is equipped with symmetric or asymmetric electrodes (cathode and anode) that act as electrocatalyst, which are dipped in an electrolytic reaction solution that includes acidified deionised water (H3O+) and a catalyst initiator An external current of 1 to 5 A applied to the electrodes in a voltage range of 1 to 5 V, which initiates C-C coupling or C-O coupling reactions on the cathode surface forming short-lived cation radical intermediates, wherein the short-lived cation radical intermediates react among themselves, or react with in-situ produced H2 gas, leading to the formation of p-Xylene as the major product and other VAPs, wherein the other VAPs formed include benzene, toluene and substituted benzene.
Absstract of: WO2025074377A1
The present disclosure provides an electrocatalytic reactor with the arrangement of the reactor assembly line, and process steps in a process plant for electrocatalytic reduction of green-house gas (GHG) emissions into VAPs, wherein the electrocatalytic reactor is equipped with symmetric or asymmetric electrodes (cathode and anode) that act as electrocatalyst, which are dipped in an electrolytic reaction solution that includes acidified deionised water (H3O+) and a catalyst initiator An external current of 1 to 5 A applied to the electrodes in a voltage range of 1 to 5 V for 3 to 5 hours, which initiates C-C coupling or C-O coupling reactions on the cathode surface forming short-lived cation radical intermediates, wherein the short-lived cation radical intermediates react among themselves, or react with in-situ produced H2 gas, leading to the formation of VAPs.
Absstract of: WO2025075575A1
The invention is related to the heat recovery system of the electrolysis unit with heat transfer fluid, which is used to recover the excess heat produced by REM electrolyzers, which separate water into hydrogen and oxygen gases using electrical energy. The invention is particularly related to the heat recovery system of the electrolysis unit with heat transfer fluid, which takes the heat energy generated during the electrolysis process of the REM electrolyzer (20) used to obtain hydrogen, through the cooling plate (22), which allows the electrolyzer (20) to cool down, and sends this waste heat to the heat exchanger (40) with the help of heat transfer pipes (30) to recover the heat, which contains heat transfer fluid containing colemanite, borax, AI2O3, SiO3, CuO, TiO2, SiL, szaybelite, boron carbide, boron solid particles between 10-200 nanometers, which can change phase, do not cluster.
Absstract of: WO2025074772A1
Provided are a multilayer resin pipe suitable for use in a water electrolysis system operating at high voltage, a water electrolysis system provided with this multilayer resin pipe, and a hydrogen transfer method using this multilayer resin pipe. The multilayer resin pipe has: an electrically insulating main pipe; an electrically insulating pressure resistant layer covering an outer surface of the main pipe; an electrically insulating gas barrier layer covering an inner surface of the main pipe; and an electrically insulating elution suppressing layer covering an inner surface of the gas barrier layer.
Absstract of: US2025116022A1
A method of operating a solid oxide electrolysis cell (SOEC) system at partial load, the SOEC system including a plurality of branches each including at least one SOEC stack, includes determining a thermally neutral target voltage and cycling an ON phase and an OFF phase for each of the branches such that the SOEC system operates at an average operating power equal to a chosen percentage of the operating power at the thermally neutral target voltage. In the ON phase, the SOEC stacks in a given branch operate at the thermally neutral target voltage, and in the OFF phase, the SOEC stacks in the given branch are unloaded to an open circuit voltage and operate at 0% of rated power. The frequency of OFF phases for each branch is determined such that stronger or healthier branches have a lower frequency of OFF cycles than weaker or less healthy branches.
Absstract of: US2025116016A1
A buoyant hydrodynamic pump is disclosed that can float on a surface of a body of water over which waves tend to pass. Embodiments incorporate an open-bottomed tube with a constriction. The tube partially encloses a substantial volume of water with which the tube's constriction interacts, creating and/or amplifying fluid-flow oscillations therein in response to wave action. Wave-driven oscillations result in periodic upward ejections of portions of the water inside the tube that can be collected in a reservoir that is at least partially positioned above the mean water level of the body of water, or pressurized by compressed air or gas, or both. Water within such a reservoir may return to the body of water via a turbine, thereby generating electrical power (making the device a wave engine), or the device's pumping action can be used for other purposes such as water circulation, propulsion, dissolved minerals extraction, or cloud seeding. Methods are disclosed for manufacture of hydrogen at sea and for delivery of said hydrogen using a ship. Methods are disclosed for filling a hydrogen-loaded carrier ship at sea.
Absstract of: US2025116009A1
This disclosure provides systems, methods, and apparatus related to electrochemical reduction of gasses. In one aspect, a method includes flowing a gas through a reduction device. The gas is carbon dioxide (CO2) or nitrogen (N2). The reduction device reduces the gas and generates a product stream including the gas, hydrogen (H2), and a chemical. The product stream is flowed through a hydrogen removal device. The hydrogen removal device removes hydrogen from the product stream. The product stream with the hydrogen removed is flowed through the gas reduction device.
Absstract of: US2025115476A1
According to some embodiments, a process for producing hydrogen may comprise operating an electrolysis cell with a source of electricity to produce an oxygen stream and a hydrogen stream from water, reacting a hydrocarbon feedstock with the oxygen stream to partially oxidize the hydrocarbon feedstock, thereby producing a synthesis gas comprising hydrogen and carbon monoxide; passing the synthesis gas and a water stream to a heat exchanger to produce steam and to cool the synthesis gas; and reacting at least a portion of the synthesis gas from the heat exchanger and at least a portion of the steam from the heat exchanger. The source of electricity to the electrolysis cell for the totality of the operation of the electrolysis cell is not produced from energy provided by the combustion of hydrocarbons;
Absstract of: WO2025075506A1
The present invention relates to a coated porous media comprising a porous media grafted with at least one compound according to Formula 1 or Formula 2: (1), (2) wherein the asterisk * designates a covalent bond with the porous media, wherein at least one of R1, R2, R3, R4, and R5 groups are different from a hydrogen atom, wherein R1, R2, R3, R4 and R5 groups are independently selected from nitro, bromo, chloro, iodo, thiocyanato, sulphate, sulphonate, sulphonium salts, phosphate, phosphonate, phosphonium salts, amine, ammonium, alcohol, aldehyde, ketone, carboxylic acid, ester, amide, nitrile, anhydride, acid halide, alkyl, alkenyl, alkynyl, aryl, naphthyl, anthryl, pyrryl, polyaromatic groups of higher degree, and wherein the alkyl, alkenyl, alkynyl, aryl, naphthyl, anthryl, pyrryl and polyaromatic groups of higher degree comprise at least one group selected from: nitro, bromo, chloro, iodo, thiocyanato, sulphate, sulphonate, sulphonium salts, phosphate, phosphonate, phosphonium salts, amine, ammonium, alcohol, aldehyde, ketone, carboxylic acid, ester, amide, nitrile, anhydride, and acid halide, wherein R6 group is selected from vinylic terminated organo-silicon compounds, compounds with alkyl chains with at least 6 carbon atoms, preferably at least 10 carbon atoms, or vinylic terminated polar molecules, and wherein R7 group is either a hydrogen atom or a methyl group. The present invention further relates to a coated porous media, comprising a porous media grafted with at
Absstract of: WO2025075497A1
The invention provides a separator (1) comprising a first separator side (2), a second separator side (3), a porous membrane (100) and a reinforcement support element (200), wherein (i) the membrane (100) comprises a silicon comprising layer (110) having a first layer side (101) and a second layer side (102), wherein a distance between the first layer side (101) and the second layer side (102) defines a membrane thickness (d mem), (ii) the membrane comprises pores (140), the pores (140) defining open fluid channels from the first layer side (101) to the second layer side (102), (iii) a porosity of the membrane (100) is in the range 1- 10%, (iv) a mean pore cross-sectional dimension (dp) is equal to or less than 10 µm, (v) the membrane thickness (dmem) is equal to or less than 200 µm, and (vi) the membrane comprises a first layer (121) arranged at the first layer side (101) and a second layer (122) arranged at the second layer side (102), wherein the first layer (121) is electrically conductive, and the second layer (122) is electrically conductive, wherein the first layer (121) directly contacts the silicon comprising layer (110), and the second layer (122) directly contacts the silicon comprising layer (110), (vii) the reinforcement support element (200) is configured from the first separator side (2) to the second separator side (3), wherein the reinforcement support element (200) is connected to the silicon comprising layer (110), wherein the reinforcement support elemen
Absstract of: WO2025073798A1
The invention relates to a method for synthesizing ammonia, having the steps of: - providing hydrogen; - supplying the hydrogen to an ammonia synthesis circulator (10) comprising an ammonia converter (3) in which ammonia is catalytically synthesized; a circulator (1) which supplies a reactant gas mixture, containing the hydrogen and nitrogen, to the ammonia converter (3); and a cooling section (5) in which ammonia is condensed out of a product gas mixture of the ammonia converter (3), wherein the ammonia synthesis circuit (10) is first operated in a full-load operation, in which the ammonia synthesis circuit (10) provides a nominal flow rate of hydrogen, and the ammonia synthesis circuit (10) is converted from the full-load operation to a partial-load operation, in which the ammonia synthesis circuit (10) provides a flow rate of hydrogen which is lower than the nominal flow rate. In the partial-load operation, a first gas flow is branched off from the reactant gas flow and is conducted to the inlet of the circulator (1), and a second gas flow is branched off from the product gas mixture and is conducted to the inlet of the circulator (1).
Absstract of: WO2025073665A1
The present invention relates to a closed carbon loop process comprising: a first step, wherein hydrogen is produced via water electrolysis, a second step, wherein oxygen and/or steam is reacted in a carbon gasification step with solid carbon produced in the fifth step and hydrogen produced in the first step to yield carbon oxides and/or hydrocarbons, wherein the hydrocarbons optionally comprise hetero atoms, a third step, wherein the carbon oxides and/or hydrocarbons produced in step two are converted in a chemical reaction step into carbon-containing products, a fourth step, wherein the carbon-containing products produced in step three are used until they become waste, a fifth step, wherein the waste based on the carbon-containing product produced in step three is converted into solid carbon and a hydrogen-containing product.
Absstract of: AU2023277213A1
The present invention is directed to piezo photocatalytic process for the production of hydrogen from water, wherein the process comprises the steps of: (a) providing non-metal-doped barium titanate which includes at least one defect; (b) contacting the non-metal-doped barium titanate provided in step (a) with water to form a mixture; and (c) subjecting the mixture formed in step (b) to: (i) actinic radiation; and (ii) mechanical force, to produce hydrogen from the water, as well as non-metal-doped barium titanate and methods of production thereof.
Absstract of: EP4534728A1
The present invention relates to circular carbon process for transporting energy comprising:a first step, wherein hydrogen is produced via water electrolysis,a second step, wherein the hydrogen produced in the first step and granular pyrolytic carbon produced in the fourth step are reacted to hydrocarbons,a third step, wherein the hydrocarbons produced in the second step are fed into a gas grid,a fourth step, wherein the hydrocarbons are taken from the gas grid, and hydrocarbons are decomposed to hydrogen and granular pyrolytic carbon,a fifth step, wherein the granular pyrolytic carbon produced in the fourth step is transported to a production site of the hydrating gasification of step two,wherein the hydrocarbons decomposition of step four is conducted in a moving or fixed bed of solid substrates and wherein the produced granular pyrolytic carbon has a bulk density in the range of 0.5 to 1.5 g/cc and has a particle size of 0.1 mm (d10) to 10 mm (d90).
Nº publicación: EP4532799A2 09/04/2025
Applicant:
SIEMENS ENERGY GLOBAL GMBH & CO KG [DE]
Siemens Energy Global GmbH & Co. KG
Absstract of: AU2023315921A1
The invention relates to a method for operating an electrolysis system (2) comprising at least one electrolyser (4) for generating hydrogen (6) and oxygen (8) as products, and at least two downstream compressors (10) for compressing at least one product (6, 8) produced in the electrolyser (4). In order to ensure part-load operation of the electrolyser (2) that is optimised in terms of efficiency and is also cost-effective, during part load operation of the electrolyser (4), a first group (A) of compressors (10
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