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resultados
Última actualización
03/05/2025 [07:03:00]
Resumen de: CN119332263A
The invention discloses an alkaline electrolysis water hydrogen production system and method capable of deeply reducing the hydrogen content in oxygen in multiple ways, a hydrogen side flash tank is arranged in the alkaline electrolysis water hydrogen production system, and dissolved hydrogen deep removal is carried out on hydrogen side alkali liquor passing through a gas-liquid separator through the hydrogen side flash tank; a mixed alkali liquor flash tank is arranged in an alkaline electrolysis water hydrogen production system, and deep removal of dissolved oxygen and dissolved hydrogen is carried out on mixed alkali liquor through the mixed alkali liquor flash tank; a hydrogen side pressure adjusting part capable of adjusting the pressure of a cathode chamber is arranged in a hydrogen side gas-liquid separator system, and an oxygen side pressure adjusting part capable of adjusting the pressure of an anode chamber is arranged in an oxygen side gas-liquid separation system, so that the pressure of the anode chamber of the alkaline electrolytic cell is higher than that of the cathode chamber, and the amount of hydrogen entering the anode chamber from the cathode chamber through a diaphragm is reduced; the concentration of hydrogen in oxygen in the water electrolysis hydrogen production system is reduced, and the safety of the system is improved.
Resumen de: CN119332263A
The invention discloses an alkaline electrolysis water hydrogen production system and method capable of deeply reducing the hydrogen content in oxygen in multiple ways, a hydrogen side flash tank is arranged in the alkaline electrolysis water hydrogen production system, and dissolved hydrogen deep removal is carried out on hydrogen side alkali liquor passing through a gas-liquid separator through the hydrogen side flash tank; a mixed alkali liquor flash tank is arranged in an alkaline electrolysis water hydrogen production system, and deep removal of dissolved oxygen and dissolved hydrogen is carried out on mixed alkali liquor through the mixed alkali liquor flash tank; a hydrogen side pressure adjusting part capable of adjusting the pressure of a cathode chamber is arranged in a hydrogen side gas-liquid separator system, and an oxygen side pressure adjusting part capable of adjusting the pressure of an anode chamber is arranged in an oxygen side gas-liquid separation system, so that the pressure of the anode chamber of the alkaline electrolytic cell is higher than that of the cathode chamber, and the amount of hydrogen entering the anode chamber from the cathode chamber through a diaphragm is reduced; the concentration of hydrogen in oxygen in the water electrolysis hydrogen production system is reduced, and the safety of the system is improved.
Resumen de: CN119332263A
The invention discloses an alkaline electrolysis water hydrogen production system and method capable of deeply reducing the hydrogen content in oxygen in multiple ways, a hydrogen side flash tank is arranged in the alkaline electrolysis water hydrogen production system, and dissolved hydrogen deep removal is carried out on hydrogen side alkali liquor passing through a gas-liquid separator through the hydrogen side flash tank; a mixed alkali liquor flash tank is arranged in an alkaline electrolysis water hydrogen production system, and deep removal of dissolved oxygen and dissolved hydrogen is carried out on mixed alkali liquor through the mixed alkali liquor flash tank; a hydrogen side pressure adjusting part capable of adjusting the pressure of a cathode chamber is arranged in a hydrogen side gas-liquid separator system, and an oxygen side pressure adjusting part capable of adjusting the pressure of an anode chamber is arranged in an oxygen side gas-liquid separation system, so that the pressure of the anode chamber of the alkaline electrolytic cell is higher than that of the cathode chamber, and the amount of hydrogen entering the anode chamber from the cathode chamber through a diaphragm is reduced; the concentration of hydrogen in oxygen in the water electrolysis hydrogen production system is reduced, and the safety of the system is improved.
Resumen de: US2025137153A1
A hydrogen generation and carbon dioxide storage system has increased processing capacity of carbon dioxide. The system includes a metal-carbon dioxide battery comprising an anode, a cathode, and an ion exchange membrane positioned between the anode and the cathode, a first supply unit configured to provide a first electrolyte to the anode, a second supply unit configured to provide a second electrolyte comprising hydrogen ions and an aqueous solution of alkali bicarbonate to the cathode, a separation unit, an electrolyte circulation unit located at a rear end of the separation unit, a dissolution unit located at a rear end of the electrolyte circulation unit, and a carbon dioxide purification unit.
Resumen de: US2025137151A1
A boiler system (1) according to one aspect of the present invention includes a water electrolysis device (20) that electrolyzes electrolysis target water with electric power supplied from a natural energy power generation device (10) to generate hydrogen and oxygen, a boiler (30) that heats makeup water by combusting fuel to generate steam, a heat exchange device (40) that exchanges heat between the electrolysis target water and a heat medium, and a control device (70) having a cooling controller (71) that cools the electrolysis target water by supplying the makeup water as the heat medium to the heat exchange device when a preset cooling start condition is satisfied.
Resumen de: US2025141341A1
A power supply device according to an embodiment is configured to supply DC power to an electrolytic cell producing hydrogen by electrolysis. The power supply device includes a power converter, a reactor, and a filter circuit; the power converter is self-commutated and includes a first output terminal and a second output terminal; the second output terminal is configured to output a positive voltage with respect to the first output terminal; the reactor is connected in series to at least one of the first output terminal or the second output terminal; and the filter circuit is connected between an anode and a cathode of the electrolytic cell. The filter circuit is a low-pass filter. A cutoff frequency of the filter circuit is set to be less than a switching frequency of the power converter.
Resumen de: AU2025202662A1
Abstract Embodiments of the present invention relates to two improved catalysts and associated processes that directly converts carbon dioxide and hydrogen to liquid fuels. The catalytic converter is comprised of two catalysts in series that are operated at the same pressures to directly produce synthetic liquid fuels or synthetic natural gas. The carbon conversion efficiency for C02 to liquid fuels is greater than 45%. The fuel is distilled into a premium diesel fuels (approximately 70 volume %) and naphtha (approximately 30 volume %) which are used directly as "drop-in" fuels without requiring any further processing. Any light hydrocarbons that are present with the carbon dioxide are also converted directly to fuels. This process is directly applicable to the conversion of C02 collected from ethanol plants, cement plants, power plants, biogas, carbon dioxide/hydrocarbon mixtures from secondary oil recovery, and other carbon dioxide/hydrocarbon streams. The catalyst system is durable, efficient and maintains a relatively constant level of fuel productivity over long periods of time without requiring re-activation or replacement. Fig 1 FIG. 1 - Integrated Catalytic Converter and Process for the Production of Renewable Liquid fuels Electrolysis Captured CO 2 H, CO2 104 Catalytic Conversion System 103 Gas 105 Syngas 106 Heat 107 Blending/Heating C t #1 Exchanger Catalyst #2 Syngas --------------------------- -------------------------------------- ----------- Conversion 109Tailg
Resumen de: AU2023366065A1
Abstract A sustainable water fuelled process and apparatus where a Unipolar electrolysis of water is described and the hydrogen and oxygen are stored before feeding a hydrogen fuel cell which is capable of providing sufficient electricity to provide power to a drive a vehicle, power a generator etc, after supplying electricity to the Unipolar electrolyser and the storage of the hydrogen and oxygen.
Resumen de: AU2023343512A1
The present invention relates to the electrochemical production of hydrogen and lithium hydroxide from Li+-containing water using a LiSICon membrane. The problem addressed by the present invention is that of specifying a process which is operable economically even on an industrial scale. The process shall especially exhibit a high energy efficiency and achieve a long service life of the membrane even when the employed feed contains impurities harmful to LiSICon materials. A particular aspect of the process is that the cell simultaneously separates off the lithium via the membrane and effects electrolysis of water. An essential aspect of the process is that the electrochemical process is performed in a basic environment, more precisely at pH 9 to 13. The pH is adjusted by addition of a basic compound to the feed.
Resumen de: WO2025087819A1
The invention relates to a catalyst comprising a nickel(II) complex comprising a bis(thiosemicarbazone) ligand derived from 2,2'-thenil, the nickel(II) complex having the general formula Chem 6 wherein R1 and R2 each independently represent a phenyl group optionally having one or more identical or different substituents R3, R3 is selected from a halogen, a hydroxy group, a C1-C4 alkyl group, a C1-C4 alkoxy group, a C1-C4 thioalkyl group, a C1-C4 dialkylamino group, a cyano group, a CF3 group and an O-CF3 group.
Resumen de: WO2025087496A1
The invention relates to the combination of a dry cell and a flooded (wet) cell in a single cell, wherein stainless steel or metal strips (10) used in electrochemical analysis are arranged horizontally and circular openings are made in a geometrically balanced manner such that electricity is evenly distributed within the cell, allowing hydroxy gas to escape from the openings instead of getting caught between the stainless steel or metal strips (10). The stainless steel or metal strips (10) are connected directly to a thermal acrylic cylinder (3) without connectors or tubes, preventing the hydroxy gas, and even the electrolyte solution, from being carried to the stainless steel strips, as the thermal acrylic cylinder (3) is positioned on top of the stainless steel or metal strips (10). An effective result of this distinctive new design is that the device is smaller, enabling installation in small vehicles. In addition, the distinctive design makes the device easy to install and maintain, since the base of the device is only 7 x 7 cm, which facilitates installation in motors, vehicles and generators that use petroleum hydrocarbons as fuel, in addition to significantly reducing the production cost of this type of device.
Resumen de: WO2025090834A1
Disclosed herein are systems and methods for tandem hydrogen (H2) production and carbon dioxide (CO2) capture. For example, described herein are methods comprising tandem H2 production and CO2 capture and conversion to a carbonate mineral. In some examples, the method is an electrochemical method. In some examples, the method comprises dissolving CO2 in water and applying an electrochemical potential sufficient to drive the H2 evolution reaction, thereby producing H2 and CO3 2-. In some examples, the methods further comprise contacting the CO3 2- with a cation to thereby form an insoluble carbonate compound.
Resumen de: WO2025089434A2
The present invention relates to an apparatus and method for producing, storing, and transferring hydrogen. According to the present invention, in order to address the problems of conventional systems and methods for producing, storing, and transferring marine green hydrogen, which are configured with a fixed structure in a small-scale offshore wind power generator on a coast or in a shallow sea area with a shallow depth of water, and thus, have low efficiency due to the difficulty in mass production of hydrogen, and a large storage space is occupied when the produced hydrogen is converted into a compressed gas form, and when the produced hydrogen is converted into ammonia, additional energy is required to extract the hydrogen again and there is a risk of environmental pollution and casualty in the event of an outflow accident, provided is a marine platform for producing, storing, and transferring marine green hydrogen, which is configured such that marine green hydrogen is produced through a floating marine structure configured to produce marine green hydrogen using electricity produced using renewable energy from the ocean, and simultaneously, the produced marine green hydrogen is stored, transferred, and offloaded through a single offshore platform (FPSO), thereby being possible to easily construct a large-scale production facility capable of producing, storing, and transferring marine green hydrogen without greenhouse gas emission on the basis of eco-friendly energy.
Resumen de: WO2025089546A1
An aspect of the present invention provides a system for producing sodium hypochlorite and hydrogen gas, comprising: a desalination unit for desalinating seawater to generate a fresh water stream and a concentrated water stream; a crystallization unit for crystallizing the concentrated water stream to generate a solid raw material containing sodium chloride; an electrolysis unit for electrolyzing reactants, derived from the solid raw material and water, to generate sodium hypochlorite and by-product gas; and a gas purification unit for purifying the by-product gas to generate hydrogen gas.
Resumen de: WO2025087088A1
Disclosed in the present application are a catalyst, and a preparation method therefor and the use thereof. By using a chromium-manganese co-doped ruthenium-based catalyst, in cooperation with a coordination dispersion effect of a chelating agent structure, the catalyst provided in the present application effectively inhibits sintering agglomeration of chromium, manganese and ruthenium components, and the prepared catalyst has better uniformity. Chromium and manganese regulate and control a d electron center of a ruthenium active site at the same time and serve as a high-corrosion resistance protective layer, such that when an OER reaction is carried out under a strong-acidity electrolyte system, the catalyst can effectively maintain high-activity characteristics thereof, long-cycle stable operation is achieved, and the use cycle can reach 2000 hours. The catalyst serving as a high-performance acidic oxygen evolution reaction electrocatalyst can be used for stably and efficiently carrying out an oxygen evolution reaction (OER) in an acidic electrolyte environment, and can be used as an anode material for water electrolysis hydrogen production in a proton conduction polymer electrolysis hydrogen production electrolytic tank, thereby solving the problems of few types, low performance and a short service life of existing acidic oxygen evolution catalysts.
Resumen de: WO2025091024A1
A hydrogen generation system suitable for outdoor use is described. The system vents to the atmosphere to help to prevent accumulation of hazardous gas buildup within the system while also protecting hydrogen generation components from extreme weather conditions. The system includes walls that the allow ventilation while inhibiting moisture and wind from entering an interior of the system.
Resumen de: WO2025087614A1
Process (2) for the production of an enhanced fuel gas (4) containing at least hydrogen gas from a fuel stream, in particular from an ammonia fuel stream (6). Said process comprises the following steps: - providing the fuel stream (6) (S100); - providing a condensable medium (8), preferably water steam (8), to a cracker unit (10); - at least one step of performing an endothermic cracking reaction of the fuel stream (6) in the cracker unit comprising at least one catalyst suitable for cracking said fuel stream (6), so as to produce an at least partially cracked fuel stream as said enhanced fuel gas (4) (S300); and - condensing at least partially said condensable medium (8) to provide said heat for the endothermic cracking reaction of the fuel stream (6).
Resumen de: WO2025088418A1
Electrochemical device (1), preferably of the electrolyser type for hydrogen production, characterised by comprising: - at least one support frame (2), with a substantially laminar development, which is provided with at least one seat (3) for an electrochemical module (10), said support frame (2) comprising a first face (12') and a second face (12") which are opposite to each other, at least one electrochemical module (10) which is mounted in said at least one seat (3) and which comprises a separation membrane interposed between two electrodes, respectively between an anode and a cathode, at least one bipolar plate (20) for applying/transferring electrical energy to the electrodes of said at least one electrochemical module (10), said bipolar plate (20) comprising a first surface (21') and a second surface (21") which are opposite to each other, said bipolar plate (20) being superimposed on said support frame (2) and being configured so that the first surface (21') of said bipolar plate (20) rests, at least in part, on a first face (12') of said support frame (2).
Resumen de: WO2025088185A1
The invention relates to a method of operating a solid oxide electrolysis cell (SOEC) stack for producing hydrogen, and a system for carrying out the method, said SOEC stack comprising at least one solid oxide electrolysis cell (SOEC), said at least one SOEC comprising an electrolyte layer interposed between a fuel-side and an oxy-side, the method comprising transient operation, in which the transient operation comprises: - providing a feed gas comprising ammonia; - supplying at least a portion of said feed gas comprising ammonia to a guard bed reactor, said guard bed reactor comprising a catalyst active in the cracking of ammonia to nitrogen and hydrogen; and withdrawing from said guard bed reactor a forming gas comprising nitrogen and hydrogen; - supplying at least a portion of the intermediate gas comprising nitrogen and hydrogen to the fuel-side of the at least one of the solid oxide electrolysis cells (SOECs) of the SOEC stack; and withdrawing from said at least one of the SOECs of the SOEC stack, a first fuel-side exit gas.
Resumen de: WO2025087866A1
The invention relates to a method of operating a solid oxide electrolysis cell (SOEC) stack for producing hydrogen, and a system for carrying out the method, said SOEC stack comprising at least one solid oxide electrolysis cell (SOEC), said at least one SOEC comprising an electrolyte layer interposed between a fuel-side and an oxy-side, the method comprising transient operation, in which the transient operation comprises: - operating the SOEC stack under open-circuit voltage (OCV); - providing a feed gas comprising ammonia; - supplying at least a portion of said feed gas comprising ammonia to a guard bed reactor, said guard bed reactor comprising a catalyst active in the cracking of ammonia to nitrogen and hydrogen; and withdrawing from said guard bed reactor a forming gas comprising nitrogen and hydrogen; - supplying at least a portion of the forming gas comprising nitrogen and hydrogen to the fuel-side of the at least one of the solid oxide electrolysis cells (SOECs) of the SOEC stack; and withdrawing from said at least one of the SOECs of the SOEC stack, a first fuel-side exit gas.
Resumen de: WO2025087865A1
The present invention relates to a guard bed reactor for silicon removal, a solid oxide electrode system for producing hydrogen comprising a guard bed reactor for silicon removal, a method of operating the system to produce hydrogen and a use of the guard bed reactor for silicon removal for depleting a stream of steam from volatile silica species.
Resumen de: US2025135397A1
Hydrogen gas purifier electrochemical cells, systems for purifying hydrogen gas, and methods for purifying hydrogen gas are provided. The cells, systems, and methods employ double membrane electrode (DMEA) electrochemical cells that enhance purification while avoiding the complexity and cost of conventional cells. The purity of the hydrogen gas produced by the cells, systems, and methods can be enhanced by removing at least some intermediate gas impurities from the cells. The purity of the hydrogen gas produced by the cells, systems, and methods can also be enhanced be introducing hydrogen gas to the cells to replenish any lost hydrogen. Water electrolyzing electrochemical cells and methods of electrolyzing water to produce hydrogen gas are also disclosed.
Resumen de: US2025136457A1
Apparatus, system, and method for geothermally driven ammonia production. Hydrogen is generated using energy obtained from the underground magma reservoir and nitrogen is captured from air using the energy obtained from the underground magma reservoir. At least a portion of the generated hydrogen is combined with at least a portion of the generated nitrogen and heated at least to a reaction temperature using the energy obtained from the underground magma reservoir. The heated hydrogen contacts the heated nitrogen for a residence time to form the ammonia.
Resumen de: US2025136442A1
A plant for producing hydrogen from scission of methane molecules with production of carbon dust includes a reactor having an inner chamber delimited by a holding wall. The reactor includes an inlet opening for feeding methane (CH4), an outlet opening for allowing hydrogen (H2) in gaseous form to flow out. A discharge opening is for discharging carbon dust (C) from the inner chamber through a sealing rotary valve. A refractory lining, and an electromagnetic induction heater are for heating the inner chamber of the reactor.
Nº publicación: AU2023343511A1 01/05/2025
Solicitante:
EVONIK OPERATIONS GMBH
EVONIK OPERATIONS GMBH
Resumen de: AU2023343511A1
The problem addressed by the present invention is that of specifying a process for producing lithium hydroxide which is very energy efficient. The process shall especially operate without consumption of thermal energy. The process shall be able to handle, as raw material, Li-containing waters generated during digestion of spent lithium-ion batteries. The LiOH produced by the process shall have a high purity sufficient for direct manufacture of new LIB. The process shall achieve a high throughput and have small footprint in order that it can be combined with existing processes for workup of used LIB/for production of new LIB to form a closed, continuous production loop. The process according to the invention is an electrolytic membrane process operating with a LiSICon membrane. It is a special aspect of the process that the electrolysis is operated up to the precipitation limit of the lithium hydroxide.
BOPI
Sede Electrónica
