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953
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Última actualización
20/12/2024 [09:16:00]
Resultados 100 a 125 de 953
Resumen de: WO2024247383A1
Provided is an ammonia decomposition device capable of achieving both an improvement in ammonia conversion rate and an improvement in catalyst life. An ammonia decomposition device (11) comprises: an ammonia gas inlet (13); a catalyst-carrying honeycomb structure (1) that decomposes ammonia to generate hydrogen and nitrogen; and a gas outlet (14). The catalyst-carrying honeycomb structure (1) includes: a ceramic honeycomb structure; a catalyst layer (3) that is formed in a flow path (2a) of the honeycomb structure and decomposes ammonia; and electrodes (4a, 4b) that are formed on a side surface of the honeycomb structure. Electricity is passed through the honeycomb structure.
Resumen de: WO2024246414A1
Disclosed is a method for producing hydrogen by using metal as a catalyst, the method comprising providing a reactor (10) comprising an inlet for aqueous solution of organic acid, outlet for hydrogen (20) and a receiving part (12) for receiving metal-containing material, providing metal- containing material (14) to the reactor, providing an aqueous solution of organic acid to the reactor, contacting the metal- containing material and the organic acid to obtain a reaction mixture in the reactor (16), providing controllable external energy to directly heat the metal-containing material to adjust the temperature of the reaction mixture in the reactor to 90ºC or more, allowing the reaction mixture to react at the increased temperature to produce hydrogen, and recovering the hydrogen Disclosed is also a device for producing hydrogen by using metal as a catalyst, and use of a batch (14) comprising metal-containing material in a porous or permeable form and/or enclosed in a casing for producing hydrogen with the method.
Resumen de: WO2024245514A1
Porous membrane, its method of production, and an alkaline electrolyzer with such membrane A porous membrane for alkaline water electrolysis is produced by a mix of a polymer, an alkoxide of an inorganic metal as a precursor for conversion into hydrophilic metal oxide or metal hydroxide particles, and a stabilizing agent for suppressing agglomera- tion of metal oxide or metal hydroxide particles during conversion of the precursor. The mix is cast as a layer on a support and exposed to nonsolvent-induced phase separation, NIPS, for converting the precursor in the layer into metal oxide particles or metal hy- droxide particles by hydrolyzing the precursor. The resulting membranes performed well in alkaline electrolysis.
Resumen de: WO2024244979A1
The present application provides a safety device for a hydrogen production system, a method, and a hydrogen production system. The safety device comprises: a liquid level detection module configured to detect the liquid level in an oxygen side gas-liquid separator of the hydrogen production system, the liquid level in a hydrogen side gas-liquid separator and/or a liquid level difference between the liquid levels of the oxygen side gas-liquid separator and the hydrogen side gas-liquid separator; and a first control module. The first control module comprises: a first controller and an inert shielding gas supply assembly; and a first safety interval is set for the first control module, and when a detection result of the liquid level detection module exceeds the first safety interval, the first controller controls the inert shielding gas supply assembly to introduce an inert shielding gas into the corresponding gas-liquid separator so as to control the liquid level. According to the safety device provided by the present application, the liquid level can be controlled by introducing the inert shielding gas, so that the liquid level balance is achieved. Even if gas-intermixing occurs, explosion can still be prevented due to the displacing action of the inert shielding gas.
Resumen de: WO2024243671A1
An multi-stage electrolyzer cell is disclosed. The multi-stage electrolyzer cell comprises an anode, a cathode and at least one ion exchange membrane separating the anode and the cathode. The anode and cathode are exposed in the respective anode chamber and cathode chamber. At least one partition is arranged within at least one of the anode and cathode chambers, dividing the at least one chamber into a plurality of process stages. Each of the partitions comprises a feed port, allowing an electrolyte solution to transport sequentially through each of the plurality of process stages. Means are arranged to transport the electrolyte solution through each one of the plurality of process stages. A multi-stage electrolytic method is also disclosed.
Resumen de: WO2024243644A1
A saltwater electrolysis apparatus is disclosed. The apparatus comprises an anode for generating oxygen from water containing chloride ions. The anode comprises an anode substrate and a metallic layered double hydroxide based electrocatalyst layer coating. The anode is configured so that, in use, absorption of chloride ions from alkaline saltwater to the electrocatalyst layer coating contributes to the OER activity and stability performance of the anode to provide direct and ClER-free alkaline saltwater electrolysis.
Resumen de: US2024401208A1
The invention relates to a dynamic hydrogen economy (DHE) system with first and second electrolytic active circuit (EAC) electrodes providing an electrical current to produce hydrogen gas. The first/second EAC electrodes can be provided in an aqueous or non-aqueous electrolyte, they can be provided in a galvanic system, they can be configured like homopolar generators, they can form an array, they can be oriented substantially vertically or horizontally, they can be provided in a flexible enveloping material, they can include an enlarging element, they can be provided in a stacked configuration, they can have defined shapes, they can be coupled with a vehicle and/or a vessel. A hydrogen gas electrolysis production method using the first and second EAC electrodes is provided. A dynamic galvanic method comprising the first and second EAC electrodes is provided.
Resumen de: US2024400403A1
Method for controlling an ammonia plant, wherein the ammonia plant comprises an ammonia synthesis section with an ammonia converter and a hydrogen generation section connected to a hydrogen storage tank, the method includes controlling the amount of hydrogen stored or delivered to the ammonia synthesis section to maintain target ranges of: the amount of hydrogen contained in the hydrogen tank; the flow rate of hydrogen delivered to the ammonia synthesis section; the flow rate of feed gas fed to said ammonia converter.
Resumen de: US2024400404A1
A multi-tier integrated power-to-ammonia system includes a converter for generating ammonia and heat through a reaction involving a compressed mixture of hydrogen and nitrogen gases. The system includes a steam generator that can generate steam using the heat from the reaction, and a reversible solid-oxide system in fluid communication with the steam generator that can separate the steam into oxygen gas and hydrogen gas.
Resumen de: US2024400908A1
An eFuels plant and process for producing synthetic hydrocarbons using renewable energy are disclosed. The eFuels plant comprises a hydrocarbon synthesis (HS) system and a renewable feed and carbon/energy recovery (RFCER) system. The RFCER comprises an electrolysis unit to convert water to hydrogen and oxygen. The hydrogen and carbon dioxide are fed to the HS system to produce synthetic hydrocarbon products. The process further comprises a thermal desalination unit, a direct air capture unit, an oxygen-fired heater, a steam turbine generator, a heat recovery unit, anaerobic and/or aerobic wastewater treatment, or a combination thereof. Process streams of and heat generated in the HS and RFCER systems are integrated to improve energy, hydrogen, and carbon efficiency and maintain stable operations during power fluctuations to the eFuels plant.
Resumen de: US2024402112A1
A method for operating a plurality of electrolyzer-stacks includes determining a concentration of impurities, which is originated by a second reaction gas electrochemically produced at a second electrode type of each of the electrolyzer-stacks, within a first gas stream; generating a trigger signal if the concentration of the impurities of the second reaction gas within the merged first reaction gas exceeds a specific second reaction gas level; identifying at least one electrolyzer-stack out of the plurality of electrolyzer-stacks, which is low performing in respect to excessively feeding second reaction gas impurities into the first gas stream, by measuring a current density of at least one electrolyzer-stack of the plurality of electrolyzer-stacks, if the trigger signal is generated.
Resumen de: US2024401209A1
An multi-stage electrolyzer cell is disclosed. The multi-stage electrolyzer cell comprises an anode, a cathode and at least one ion exchange membrane separating the anode and the cathode. The anode and cathode are exposed in the respective anode chamber and cathode chamber. At least one partition is arranged within at least one of the anode and cathode chambers, dividing the at least one chamber into a plurality of process stages. Each of the partitions comprises a feed port, allowing an electrolyte solution to transport sequentially through each of the plurality of process stages. Means are arranged to transport the electrolyte solution through each one of the plurality of process stages. A multi-stage electrolytic method is also disclosed.
Resumen de: US2024401218A1
A system for an electrochemical process comprises an electrochemical reactor (101), an electric power source (104) for supplying controllable direct voltage to electrodes of the electrochemical reactor, a measurement apparatus (105) for producing measurement data indicative of formation of product gases of the system, and a controller (106) configured to reduce the direct voltage when: an idle command to set the system into an idle state has been received, the measurement data indicates formation of the product gas, and the direct voltage is above a lower limit of a safe voltage area free from degradation of the electrodes. Thus, in the idle state, the direct voltage is reduced only by an amount needed for stopping the product gas formation but not more. Therefore, the degradation such as corrosion of the electrodes can be avoided or at least reduced in the idle state.
Resumen de: JP2024168801A
【課題】低コスト且つ高効率である多数台並列配置型の水電解ユニットによる水電解水素製造システムを提供する。【解決手段】水電解水素製造システム１は、並列接続された多数台の水電解ユニット１０を備えるモジュラー型水電解水素製造システムであって、水電解ユニット１０は、交流電力ACを直流電力DCに変換するキロワット級のAC／DC変換器１１と、AC／DC変換器１１で変換された直流電力を用いて水を電気分解する水電解槽１２とを備える。【選択図】図１
Resumen de: EP4471188A1
An object is to provide a cathode that maintains high energy conversion efficiency over a long period of time without increase in overvoltage even when hydrogen generation is repeatedly started and stopped. In order to achieve the above-mentioned object, the present disclosure is a cathode for generating hydrogen including a conductive substrate and a catalyst layer including, on a surface of the conductive substrate: at least one of Pt, a Pt oxide, and a Pt hydroxide; and at least one of a metal, an oxide, and a hydroxide of a lanthanoid element that becomes electrochemically stable as trivalent ions within the potential window of water of pH 7 or higher and pH 16 or lower. The molar ratio of the Pt element to the lanthanoid element (Pt:lanthanoid) in the catalyst layer is 95:5 to 65:35.
Resumen de: AU2023213230A1
A system and method for producing hydrogen wherein the system comprises at least one electrolyzer adapted to be located within a subterranean formation, at least one electrical supply cable having a length selected to extend from the at least one electrolyzer to a ground surface power supply, at least one supply tubing string having a length selected to extend from the at least one electrolyzer to a water supply at the ground surface and at least one collection tubing string having a length selected to extend from the at least one electrolyzer to a collection location at the ground surface. The method comprises providing a well from a surface to an underground formation, locating at least one electrolyzer in the well, supplying the at least one electrolyzer with supply electricity, supplying the at least one electrolyzer with supply water, producing hydrogen gas at the electrolyzer and collecting and transporting the produced hydrogen gas to the surface.
Resumen de: EP4471185A1
The present invention provides methods for obtaining MAX-phase and MXene-containing composite electrodes for enhancing the hydrogen evolution reaction (HER) during the electrolysis process. The methods involve producing a MAX-phase-containing composite material to be used in the production of an electrode. The MAX-phase-containing composite material gradually etches in an alkaline or acidic electrolyte during the electrolysis process, forming MXene-containing composite material with an enhanced HER performance. The formation of MXene layers can be further facilitated by HER. The overall performance of the HER electrode is thus continuously improved with time. The invention offers a practical and effective solution for improving the efficiency and durability of HER electrodes in industrial electrolysers.
Resumen de: AU2022447788A1
The invention relates to an electrochemical cell (1) for a high-pressure electrolyser, comprising: a closed cell frame (3) made of a high-pressure-resistant first material (5); an electrochemical reaction region (7), which is arranged completely inside the cell frame (3) and comprises an anodic half cell and a cathodic half cell; a gap (9), which spatially separates the reaction region (7) from the cell frame (3); and a second material (11) introduced into the gap (9), wherein the second material (11) is an electrical insulator, and wherein the second material (11) has a lower diffusion coefficient with respect to the entry of foreign ions into the reaction region (7). The invention also relates to a cell stack (19) comprising a plurality of electrochemical cells (1) and to a high-pressure electrolyser comprising a cell stack (19).
Resumen de: WO2023186357A2
The invention relates to an electrolyser (1) for generating hydrogen (H2) and oxygen (O2) as product gases, said electrolyser comprising an electrolysis module (3) and a gas separator (5) which is designed for phase separation of the product gas from water, the electrolysis module (3) being connected to the gas separator (5) via a product flow line (7) for the product gas, and a return line (9), which fluidically connects the gas separator (5) to the electrolysis module (3), being provided for the separated water, a circulation pump (13) being connected in the return line (9). The electrolyser (1) has a bypass line (15) comprising a valve (17) which connects the gas separator (5) to the electrolysis module (3), at least part of the return line (9) being fluidically bypassed by the bypass line (15) so that, in the event of a standstill, water can be supplied from the gas separator (5) to the electrolysis module (3) via the bypass line (15). The invention also relates to a method for operating an electrolyser (1) comprising an electrolysis module (3), wherein, in a standstill mode, the electrolysis current is stopped and a safety deactivation is initiated. This involves water being automatically driven into the electrolysis module (3) solely due to a hydrostatic differential pressure (∆p) associated with a predefined height difference (∆h), and flooding the electrolysis module (3) with water.
Resumen de: CN118524987A
The invention relates to an apparatus comprising: a reverse water gas shift (RWGS) section comprising:-a first feed comprising hydrogen to the RWGS section, and a second feed comprising carbon dioxide to the RWGS section, or-a combined feed comprising hydrogen and carbon dioxide to the e-RWGS section; a water removal section downstream of the RWGS section; a compressor downstream of the water removal section; and-a cryogenic CO2 separation section downstream of the compressor wherein the RWGS section is arranged to convert the first feed and the second feed or the combined feed into a first syngas stream and to feed the first syngas stream to a water removal section, wherein the water removal section is arranged to remove water from the first syngas stream to produce a dehydrated syngas stream and a water condensate, and wherein the compressor is arranged to compress the dehydrated syngas stream to produce a compressed syngas stream, wherein the low temperature CO2 separation section is arranged to separate the compressed syngas stream into a CO2 lean syngas stream and a CO2 rich condensate, where the apparatus has means to recycle at least a portion of the CO2 rich condensate to the RWGS section or to the feed of the RWGS section, and where the RWGS section is an electrically heated RWGS (e-RWGS) section.
Resumen de: AU2023247817A1
The invention relates to an electrolyser (1) for generating hydrogen (H
Resumen de: EP4471184A1
The invention relates to a dynamic hydrogen economy (DHE) system with first and second electrolytic active circuit (EAC) electrodes providing an electrical current to produce hydrogen gas. The first/second EAC electrodes can be provided in an aqueous or non-aqueous electrolyte, they can be provided in a galvanic system, they can be configured like homopolar generators, they can form an array, they can be oriented substantially vertically or horizontally, they can be provided in a flexible enveloping material, they can include an enlarging element, they can be provided in a stacked configuration, they can have defined shapes, they can be coupled with a vehicle and/or a vessel. A hydrogen gas electrolysis production method using the first and second EAC electrodes is provided. A dynamic galvanic method comprising the first and second EAC electrodes is provided.
Resumen de: US2024328009A1
An electrode and a system for electrochemical hydrogen production from water oxidation and proton reduction can include 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 can include 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: PL445077A1
Przedmiotem zgłoszenia jest zapalniczka kieszonkowa na paliwo wodorowe, która uruchamiana jest kciukiem i która przeznaczona jest do odpalania papierosów, świeczek czy innych wytworów zapalanych tradycyjnymi kieszonkowymi zapalniczkami, utworzona z korpusu (1), w którym umiejscowiony jest zbiornik na płyn (2) mający w górnej ściance korpusu (1) otwór wylotowy, w którym zamontowany jest otwierany dźwignią (3) zawór (4). przy którym umiejscowiony jest, zamontowany w korpusie (1), iskrowy układ zapłonowy (5), charakteryzuje się tym, że w dolnej części korpusu (1) utworzona jest, szczelnie oddzielona od zbiornika na płyn (2), kamora, w której umiejscowiony jest akumulator (7), który poprzez wyłącznik elektryczny (9) przyłączony jest do osadzonych w zbiorniku na płyn (2), wytwarzających w procesie elektrolizy wodór ze znajdującego się w zbiorniku na płyn (2) elektrolitu, elektrod, anody (10) i katody (11).
Nº publicación: FR3149023A1 29/11/2024
Solicitante:
VINCI CONSTRUCTION GRANDS PROJETS [FR]
VINCI CONSTRUCTION GRANDS PROJETS
Resumen de: FR3149023A1
La présente invention concerne un procédé de commande d’une installation de production d’hydrogène (100), le procédé comprenant les étapes successives suivantes : - détermination d’une première grandeur d’un courant électrique de fonctionnement nominal (In) d’au moins un électrolyseur (50) ; - mesure d’une deuxième grandeur d’un courant électrique (Imes) traversant une connexion (22) entre l’électrolyseur (50) ou au moins l’un des électrolyseurs (50) et au moins un dispositif de conversion photovoltaïque (10) ; et - orientation du dispositif (10) ou de l’un au moins des dispositifs (10) de sorte que la deuxième grandeur (Imes) soit inférieure ou égale à la première grandeur (In). Figure pour l’abrégé : Fig. 1
BOPI
Sede Electrónica
