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GREEN ENERGY TRANSPORTATION SYSTEM AND TRANSPORTATION METHOD USING GREEN HYDROGEN

Resumen de: US2025296837A1

There is provided a transportation system that can efficiently transport renewable energy from power generation facilities in remote locations to hydrogen energy consumption areas with low environmental impact. The system includes a power generator that generates and stores electricity using renewable energy, a water electrolyzer that generates hydrogen by electrolyzing water using the electricity generated by the power generator, a methane synthesizer that generates methane using the hydrogen generated and recycled CO2 as raw materials through the Sabatier reaction, a methane transportation means that transports the generated methane to the hydrogen energy consumption site without emitting CO2 into the atmosphere, a hydrogen production and carbon capture unit that produces hydrogen by autothermal reforming method using the transported methane and separately prepared oxygen as raw materials, and a CO2 transportation means that transports the recycled CO2 without emitting CO2 into the atmosphere to the site where the methane synthesizer is installed.

METHOD FOR GENERATING AND TREATING A TWO-PHASE OUTFLOW FROM ONE OR MORE PRESSURIZED ELECTROLYSER STACKS AND ELECTROLYSER SYSTEM COMPRISING ONE OR MORE INDIVIDUAL PRESSURIZED ELECTROLYSER STACKS

Resumen de: AU2024237545A1

A method for generating and treating a two-phase outflow from one or more pressurised electrolyser stacks which are adapted to electrolyse water into hydrogen and oxygen, whereby a pump supplies a catholytic fluid flow from one first gas liquid gravitational separator vessel to the electrolyser stacks and whereby a further pump supplies an anolytic fluid flow from one second gas liquid gravitational separator vessel to the electrolyser stacks, and whereby at least one cyclone type gas liquid separator receives combined outflows from the catholytic chambers and/or receives combined outflows from anolytic chambers respectively inside corresponding gravitational gas liquid separator vessel whereby further, the at least one cyclone type gas liquid separator separates the gas from the liquid along a generally horizontal cyclonic rotation axis inside the gas liquid gravitational separator vessel. An electrolyser system is also provided.

PROCESS FOR AMMONIA SYNTHESIS USING GREEN HYDROGEN AND METHOD FOR REVAMPING AN AMMONIA PLANT

Resumen de: AU2024257970A1

Process for synthesis of ammonia wherein: ammonia make-up gas (7) containing hydrogen and nitrogen is reacted in an ammonia converter (15) under ammonia forming conditions thus obtaining an ammonia-containing effluent (8); a first hydrogen portion contained in the ammonia make-up gas (7) is produced by reforming a hydrocarbon source (1) in a reforming process (100); a second hydrogen portion (19) contained in the ammonia make-up gas (7) is produced separately from said reforming process (100), by using at least a renewable energy source (SE, WE); a part of said hydrogen (19) produced in step (c) is stored in a hydrogen storage (103); hydrogen (20) from said hydrogen storage (103) is used to fully or partially replace said second hydrogen portion (19) when said renewable energy source (SE, WE) is fully or partially unavailable. Said process comprising the steps of: assessing an expected flow rate of the hydrogen (19) produced in step (c); adjusting a flow rate of the hydrocarbon source (1) so that a flow rate of the first hydrogen portion in said ammonia make- up gas (7) is in a desired ratio with respect to said expected flow rate; detecting an actual amount, e.g., a filling level, of said hydrogen in said hydrogen storage (103); detecting an actual flow rate of hydrogen produced using the renewable energy source (SE, WE), and adjusting a flow rate of the hydrogen (20) from said hydrogen storage (103) depending on said actual amount detected in said hydrogen storage (103) and

METHOD TO ENCLOSE A HYDROGEN AND OXYGEN GENERATING APPARATUS IN AN ENCLOSURE AND ENCLOSURE ADAPTED FOR A HYDROGEN AND OXYGEN GENERATING APPARATUS

Resumen de: AU2024228415A1

Enclosure adapted for a hydrogen and oxygen generating apparatus arranged in a movable has an interior and an interior surface and an exterior surface whereby the hydrogen and oxygen generating apparatus comprises at least one electrolyser stack adapted for electrolysing water to hydrogen product gas and oxygen product gas and accompanying gas and electrolyte handling equipment. The exterior surface of the enclosure comprises at least a heat insulating, flexible polymer cover element which is attached to a metal frame.

ELECTROLYSER SYSTEM

Resumen de: AU2024237817A1

The present invention relates to an electrolyser system (10) comprising at least one electrolyser (20), the electrolyser (20) comprising at least one steam inlet (41) and at least one off-gas outlet (38; 39), and a turbocharger (62) for compressing off-gas from the electrolyser (20). The turbocharger (62) comprises a drive fluid inlet, a drive fluid outlet, a compression fluid inlet, a compressed fluid outlet, a compressor (13) and a turbine (12). The turbine (12) is configured to drive the compressor (13). The drive fluid outlet of the turbocharger (62) is fluidically connected to the at least one steam inlet (41) of the electrolyser (20). The at least one off-gas outlet (38; 39) of the electrolyser (20) is fluidically connected to the compression fluid inlet of the turbocharger (62). The system (10) can further can comprise a steam source fluidically connected to the drive fluid inlet of the turbocharger (62) for powering the turbine (12) using pressurised steam.

ELECTROLYZER WITH VARIABLE NUMBER OF ACTIVE ELECTROLYSIS CELLS

Resumen de: AU2024222987A1

A system, comprising: an electrolyzer having a plurality of electrolysis cells arranged in a cell stack, wherein the electrolysis cells are electrically connected in series and grouped into two or more cell groups, each cell group having an electrical contact at either end; an electrical circuit having one or more switches, each switch coupled between the electrical contacts of a respective one of the cell groups and configured to selectively disconnect the cell group from the cell stack by electrically bypassing the cell group via a lower resistance path, to thereby vary the number of active electrolysis cells in the cell stack; and a controller configured to determine the number of active electrolysis cells based on a variable amount of direct current (DC) electrical energy supplied to the cell stack by an electrical energy source, and to control the one or more switches based on the determination.

GAS PRESSURE BALANCE METHOD IN AN ELECTROLYSER SYSTEM AND ELECTROLYSER SYSTEM WITH A PRESSURE BALANCE VALVE SYSTEM

Resumen de: AU2024224224A1

In a gas pressure balance method in an electrolyser system a predefined pressure difference between pressures in an oxygen gas separation tank and a hydrogen gas separation tank is maintained by controlled release of gases through an oxygen back pressure valve and a hydrogen back pressure valve. in a first step, for each of the oxygen back pressure valves and the hydrogen back pressure valves, a predefined, calibrated pilot gas pressure is generated and in a second step, the predefined, calibrated pilot gas pressures are forwarded to the respective back pressure valves and in a third step, hydrogen and oxygen gasses are released whenever the gas pressures in the hydrogen and oxygen separation tanks exceeds the predefined, calibrated pilot pressure in the respective pilot gas streams.

ELECTROLYSER UNIT COMPRISING A PLURALITY OF INDIVIDUAL ELECTROLYSER STACKS AND METHOD FOR CONNECTING ELECTROLYSER STACKS TO FORM UNITS

Resumen de: AU2024221020A1

The invention comprises a method for connecting a pair of electrolyser stacks with electrolyte, electric current and gas drain piping. Accordingly, each pair of stacks of the electrolyser: - through interconnection endplates are supplied with alkaline electrolyte at elevated pressure by common electrolyte supply pipes and further, - through the interconnection endplate drain off oxygen gas containing electrolyte, and hydrogen gas containing electrolyte, to common gas separation vessels for oxygen and hydrogen respectively, - pull first electrically interconnected current injection electrodes adjacent to interconnection endplates to zero electrical potential through a zero potential conductor, and - supply second current injection electrodes placed adjacent to distal endplates with electric current at potentials equally higher and lower respectively than the zero potential at the first electrodes.

CATALYST FOR HYDROGEN PRODUCTION

Resumen de: US2025297387A1

Provided herein are catalysts for producing hydrogen via the hydrogen evolution reaction (HER) during water splitting, methods of producing hydrogen via photocatalytic water splitting using the catalysts, and compositions for use in photocatalytic water splitting that include the catalysts. In some embodiments, a catalyst hereof is a metal complex of Formula I,M(L1)(L2)A   Formula Iwherein M is a transition metal, L1 and L2 are both ligands independently forming one or more coordinate bonds with the metal M, and A is an anion, andwherein L1 is a tetrapyridyl-amine (Py4N) having four pyridyl groups and an amine group each forming a coordinate bond with the metal M.

ELECTROLYZER FOR PRODUCING HYDROGEN AND METHOD FOR THE PRODUCTION OF HYDROGEN, AND USE OF THE ELECTROLYSER

Resumen de: US2025297380A1

An electrolyzer for producing hydrogen and a method for the production of hydrogen. The electrolyzer for producing hydrogen comprises a plurality of electrolysis cells arranged in a plurality of planes, each having at least one anode and one cathode and a proton exchange membrane between the anode and the cathode. The proton exchange membranes forming respective active area regions. At least one electrolysis cell has a plurality of active area regions arranged substantially in a plane.

GENERATION OF OXYGEN FROM ACTIVATED ALUMINUM AND INORGANIC ACIDS

Resumen de: US2025296839A1

Oxygen generators and methods related to the generation of oxygen using activated aluminum alloys and inorganic acids such as nitric acid are generally described. In some embodiments, aluminum nitrate is thermally decomposed to produce oxygen and nitrogen dioxide. The nitrogen dioxide may also optionally be used to produce oxygen gas. In some embodiments, a reaction between nitric acid and an activated aluminum alloy may be used to produce the aluminum nitrate. In other embodiments, a reaction between nitric acid and aluminum hydroxide may be used to produce the aluminum nitrate.

Process and Apparatus for Cracking Ammonia

Resumen de: US2025296836A1

In a process in which ammonia is cracked to form a hydrogen gas product and an offgas comprising nitrogen gas, residual hydrogen gas and residual ammonia gas, residual ammonia is recovered from the offgas from the hydrogen recovery process by partial condensation and phase separation, and hydrogen is recovered from the resultant ammonia-lean offgas by partial condensation and phase separation. The recovered ammonia may be recycled the cracking process and the recovered hydrogen may be recycled to the hydrogen recovery process to improve hydrogen recovery from the cracked gas. Overall hydrogen recovery from the ammonia may thereby be increased to over 99%.

RENEWABLE ENERGY UTILIZATION SYSTEM BASED ON NITROGEN-FREE COMBUSTION AND CARBON DIOXIDE RECYCLING

Resumen de: US2025297570A1

The present disclosure provides a renewable energy utilization system based on nitrogen-free combustion and carbon dioxide recycling. The system includes: an electrolysis unit used to electrolyze water using renewable energy to obtain hydrogen and oxygen; a carbon dioxide collection unit used to collect carbon dioxide gas released during utilization of the renewable energy; a methanol synthesis unit used to synthesize methanol using the hydrogen and the carbon dioxide gas; an internal combustion engine generator set used to perform nitrogen-free combustion of the methanol and the oxygen to generate exhaust gas and electrical energy; and a methanol reforming reaction unit used to catalyze a reforming reaction of the methanol using residual heat of the exhaust gas to obtain synthesis gas, and input the synthesis gas into the internal combustion engine generator set as a fuel for the internal combustion engine generator set.

電解セルの製造方法

Resumen de: US2025283230A1

A method for producing an electrolysis cell includes a joining step of joining a frame portion of a protective sheet member provided between a membrane electrode assembly and a fluid-supply-side current collector to a portion of the membrane electrode assembly on the outer side of the covered portion where an electrolyte membrane is covered with an electrode catalyst layer to form a joint, and a joined body stacking step of stacking the membrane electrode assembly and the protective sheet member joined together on the fluid-supply-side current collector with the protective sheet member facing the fluid-supply-side current collector.

膜・触媒層接合体および水電解装置

Resumen de: WO2025191937A1

In the present invention, a third catalyst that promotes the bonding of hydrogen and oxygen is disposed on the anode side of an electrolyte membrane (51). Even when hydrogen generated on the cathode side passes through the electrolyte membrane (51) and enters the anode side, the action of the third catalyst enables said hydrogen to bond with oxygen generated on the anode side, thereby converting into water. This makes it possible to reduce the concentration of hydrogen in the gas discharged from the anode side. Particles of the third catalyst have a hollow structure with a cavity therein. Therefore, the amount of the third catalyst used can be reduced while maintaining the surface area of the particles. Additionally, because the particles of the third catalyst have an opening, the movement of water, hydrogen, and oxygen at the anode side is less likely to be inhibited. Accordingly, reductions in the reaction rate of electrolysis on the anode side can be suppressed.

SURFACE MODIFICATION METHOD OF NICKEL-BASED CATALYTIC MATERIAL FOR WATER ELECTROLYSIS, AND CATALYTIC MATERIAL FOR WATER ELECTROLYSIS

Resumen de: US2025297385A1

A surface modification method of a nickel-based catalytic material for water electrolysis, and a catalytic material for water electrolysis are provided. The method includes: immersing a nickel-based substrate material to be modified in a first solution including a transition metal cation to allow a first modification treatment, such that a layered double hydroxide (LDH) is produced on a surface of the nickel-based substrate material; conducting a plasma etching treatment for the LDH produced on the surface of the nickel-based substrate material after the first modification treatment to produce a cation/anion double vacancy-containing LDH; and immersing the cation/anion double vacancy-containing LDH produced after the plasma etching treatment in a second solution including a high-valent metal cation to allow a second modification treatment, such that a high-valent metal single atom-containing LDH is produced. The method has advantages such as simple process, low cost, and high stability.

PROCESSES FOR PREPARING HYDROXIDES AND OXIDES OF VARIOUS METALS AND DERIVATIVES THEREOF

Resumen de: US2025296852A1

There are provided processes for preparing a metal hydroxide comprising (i) at least one metal chosen from nickel and cobalt and optionally (ii) at least one metal chosen from manganese, lithium, copper, magnesium and aluminum, the process comprising:reacting a metal sulfate comprising (i) at least one metal chosen from nickel and cobalt and optionally (ii) at least one metal chosen from manganese, lithium, copper, magnesium and aluminum with lithium hydroxide, sodium hydroxide and/or potassium hydroxide and optionally a chelating agent in order to obtain a solid comprising the metal hydroxide and a liquid comprising lithium sulfate, sodium sulfate and/or potassium sulfate;separating the liquid and the solid from one another to obtain the metal hydroxide;submitting the liquid comprising lithium sulfate, sodium sulfate and/or potassium sulfate to an electromembrane process for converting the lithium sulfate, sodium sulfate and/or potassium sulfate into lithium hydroxide, sodium hydroxide and/or potassium hydroxide respectively;reusing the sodium hydroxide obtained by the electromembrane process for reacting with the metal sulfate; andreusing the lithium hydroxide obtained by the electromembrane process for reacting with the metal sulfate and/or with the metal hydroxide.

SUB-SURFACE GEOTHERMAL AMMONIA PRODUCTION SYSTEM

Resumen de: US2025296846A1

The present disclosure is directed to a sub-surface geothermal ammonia production system, comprising; a geothermal well having an inlet in fluid communication with an injection bore, and an outlet in fluid communication with a production bore, the inlet configured to receive a fluid mixture of hydrogen and nitrogen, and the outlet producing a fluid ammonia; and a catalyst disposed within the geothermal well, wherein the fluid mixture of hydrogen and nitrogen is drawn into the injection bore of the geothermal well absorbing thermal energy from geology surrounding the well before entering the production bore of the geothermal well, whereby the heated fluid mixture of hydrogen and nitrogen is drawn into contact with the catalyst to convert the fluid mixture of hydrogen and nitrogen into the fluid ammonia within the well.

DEVICE FOR PROVIDING HYDROGEN

Resumen de: US2025297602A1

In order to provide a device for providing hydrogen by means of an electrolysis unit which allows the longest possible service life of the electrolysis unit even in case of fluctuating energy supplies to the electrolysis unit, a reciprocating piston compressor is provided to compress the hydrogen generated by the electrolysis unit, the reciprocating piston compressor having at least one automatic intake valve. A unloader is provided in order to hold the intake valve selectively in an open position, an electrically actuatable actuator is provided to activate the unloader, and a control unit is provided to control the actuator, the control unit being designed to actuate the actuator in such a way that an outlet pressure (p1) of the hydrogen at the outlet of the electrolysis unit, or a differential pressure (Δp) between an anode and a cathode of the electrolysis unit, is adjustable to a predefined target value (p1_target, Δp_target).

CATALYST FOR HYDROGEN PRODUCTION

Resumen de: WO2025199193A1

Provided herein are catalysts for producing hydrogen via the hydrogen evolution reaction (HER) during water splitting, methods of producing hydrogen via photocatalytic water splitting using the catalysts, and compositions for use m photocatalytic water splitting that include the catalysts. In some embodiments, a catalyst hereof is a metal complex of Formula (I): M(L1)( L2)A, wherein M is a transition metal, L1 and L2 are both ligands independently forming one or more coordinate bonds with the metal M, and A is an anion, and wherein L1 is a tetrapyridyl-amine (Py4N) having four pyridyl groups and an amine group each forming a coordinate bond with the metal M.

ELECTROREDUCTION OF CARBON DIOXIDE (CO2) TO MULTI-CARBON PRODUCTS ON ELECTROCATALYST COMPRISED OF MOLYBDENUM DIPHOSPHIDE (M0P2) AND ITS DOPED DERIVATIVES

Resumen de: WO2025199135A1

Disclosed are electrodes comprising a conductive support substrate having an electrocatalyst coating containing crystalline molybdenum phosphides (MoxPy) in size ranging from micro- to nano-particles. The conductive supporting substrate is capable of incorporating a material to be reduced, such as CO2 or CO. Also disclosed are electrochemical methods for generating oxyhydrocarbons from CO2 or CO using water as a source of hydrogen.

ENHANCED OXYGEN ELECTROCHEMISTRY IN FLEXIBLE RECHARGEABLE ZINC-AIR BATTERIES WITH F-DOPED CATALYST AND QUASI-SOLID STATE MEMBRANE

Resumen de: WO2025196817A1

The present invention generally relates to a field of advanced energy storage systems. Specifically, the present invention relates to a development of a synergistic F-doped catalyst and quasi-solid state electrolyte membrane for flexible and rechargeable zinc-air batteries. More particularly, the present invention relates to a bifunctional electrocatalyst including f- doped cubic nickel cobalt oxide (NiCoO2)-heteroatom doped mesoporous carbon composite and anion conducting polymer electrolyte membrane for zinc air battery application. Further, the resultant bifunctional electrocatalyst and quasi-solid state electrolyte membrane exhibit an enhanced bifunctional activity and significantly enhance the oxygen evolution reaction and/or hydrogen evolution reaction. In addition, considering the increasing interest in flexible electronics developing reliable anion exchange membranes for ZABs with ionic conductivity matching liquid electrolytes is also essential.

ALKALI-CONTAINING WASTEWATER ZERO DISCHARGE DEVICE AND METHOD FOR WATER ELECTROLYSIS-BASED HYDROGEN PRODUCTION

Resumen de: WO2025194821A1

Disclosed in the present application are an alkali-containing wastewater zero discharge device and method for water electrolysis-based hydrogen production. The device comprises a hydrogen-side water seal device, a hydrogen-side degassing device, a waste alkali collecting tank, a waste alkali pump, an oxygen-side water seal device, and an oxygen-side degassing device. A hydrogen-side liquid phase outlet pipeline of the hydrogen-side degassing device goes downhill and extends inwards to the waste alkali collecting tank; an oxygen-side liquid phase outlet pipeline of the oxygen-side degassing device goes downhill and extends inwards to the waste alkali collecting tank; an exhausting pipeline of the waste alkali collecting tank is communicated with the atmosphere; by means of an inlet pipeline, the waste alkali pump goes downhill and extends inwards to the waste alkali collecting tank, and an outlet of the waste alkali pump is communicated with any one of a water supplementing tank, an alkali blending tank or an alkali transporting tank vehicle. In the present invention, on the premise of ensuring safety and saving investment and an occupied space, alkali-containing wastewater is recycled to serve as a raw material, thereby realizing zero discharge of alkali-containing wastewater; in addition, a centralized alkali-containing wastewater collecting system is designed, so that hydrogen-side and oxygen-side alkali-containing wastewater respectively pass through respective water seal

FUEL CELL SYSTEM, FUEL CELL PLANT AND PROCESS FOR PRODUCTION OF SYNTHESIS GAS

Resumen de: US2025297379A1

The present invention relates to an electrolysis system (10), an electrolysis plant (30) with an electrolysis system (10) and a synthesis system (20) and a method (1000) for generating synthesis gas by means of the electrolysis system (10).

SEAWATER TREATMENT SYSTEM AND SEAWATER TREATMENT METHOD

Nº publicación: WO2025194940A1 25/09/2025

Solicitante:

SICHUAN SIDANENG ENVIRONMENTAL PROTECTION TECH CO LTD [CN]
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Resumen de: WO2025194940A1

A seawater treatment system and a seawater treatment method, which are used to solve the technical problem of a low degree of resource utilization of seawater in the prior art. The seawater treatment system comprises: a filtration device, which is used for removing solid particle impurities from seawater and outputting filtered water; a nanofiltration device, which is used for separating and filtering out monovalent ions and multivalent ions from the filtered water and outputting a nanofiltration permeate and a nanofiltration concentrate; a softening device, which is used for removing multivalent ions from the nanofiltration concentrate and outputting softened water; an electrolytic hydrogen production device, which is used for decomposing organic matter in the nanofiltration permeate, producing hydrogen and outputting electrolyzed water; and a desalting device, which is used for separating salt from fresh water in the electrolyzed water, wherein an anode (12) and a cathode (13) of the electrolytic hydrogen production device are staggered, the cathode (13) is of a hollow structure having a shell layer (131) and a hollow layer (132), the hollow structure has an opening (133), an exhaust structure is arranged on the shell of an electrolytic cell, and the opening (133) outputs hydrogen via the exhaust structure.