Alerta

ELECTROLYSIS OXYGEN FOR SUSTAINABLE ACETYLENE CHEMISTRY

Resumen de: WO2025196219A1

A process for preparing acetylene and/or synthesis gas by partial oxidation of hydrocarbons with an oxidizing agent, wherein the oxidizing agent comprises O2 and H2, wherein the oxidizing agent is obtained at least in part by water splitting, preferably by electrolysis, the water splitting, preferably the electrolysis, preferably using energy generated at least in part from non-fossil resources, a cracking gas stream obtainable by the process according to the present invention, acetylene obtainable by the process according to the present invention, acetylene having a low total cradle to gate product carbon footprint, synthesis gas obtainable by the process according to the present invention, synthesis gas comprising hydrogen, CO, CO2 and CH4, wherein the separated synthesis gas stream has a δ18O value of < 22 ‰, referred to the international standard VSMOW ((Vienna- Standard- Mean-Ocean- Water)), the use of an oxidizing agent comprising O2 and H2 for the preparation of acetylene and synthesis gas, the use of the inventive acetylene or the acetylene obtained by the inventive process for the preparation of butynediol, butanediol, butenediol, polybutylene terephthalate (PBT), polybutylene adipate terephthalate (PBAT), tetrahydrofurane (THF), polytetrahydrofurane (polyTHF), polyester-based thermoplastic polyurethanes (TPUs), polyether-based TPUs, gamma-butyrolactone, pyrrolidine, vinylyrrolidone, polyvinylpyrrolidone, N-methylpyrrolidone, vinyl ether, polyvinyl ether, terpenes

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.

METHOD AND SYSTEM FOR PRODUCING A SYNTHETIC FUEL FROM BIOMASS

Resumen de: WO2025195703A1

The invention relates to a method for producing a synthetic fuel (F), comprising the steps (S1): carrying out a first reaction process, wherein the first reaction process creates a gas mixture of synthesis gas (SG) and carbon dioxide (CO2) with the addition of biomass (BM), oxygen (O2), wherein the synthesis gas (SG) contains carbon monoxide (CO) and hydrogen (H2); (S2): separating carbon dioxide (CO2) from the gas mixture and supplying hydrogen (H2) to separated carbon dioxide (CO2) for a second reaction process; (S3): carrying out a second reaction process, wherein in the second reaction process methanation is carried out using the reactants carbon dioxide (CO2) and hydrogen (H2), wherein methane (CH4) and water (H2O) are produced as an intermediate product; (S4): feeding back methane (CH4) and water (H2O) obtained from the second reaction process into the first reaction process, wherein a gas mixture containing synthesis gas (SG) is produced; and (S5): discharging synthesis gas (SG) and converting synthesis gas into a synthetic fuel (F). The invention further relates to a system (1) for producing a synthetic fuel (F), which is designed in particular to carry out the method.

METHOD FOR OPERATING AN AMMONIA SYNTHESIS PROCESS AT PARTIAL LOAD, AND PARTIAL-LOAD-CAPABLE AMMONIA SYNTHESIS PROCESS

Resumen de: WO2025195683A1

The invention relates to a method and a device for synthesizing ammonia (8), wherein a gas mixture (make-up gas) (1), which comprises hydrogen and nitrogen and is supplied with a temporally fluctuating flow rate, is provided after being compressed in a first compressor (make-up gas compressor) (V1) in order to form an ammonia synthesis gas (3) that is compressed with the aid of a second compressor (recycle compressor) (V2) and is then reacted in an ammonia reactor (R) in order to form an ammonia-containing synthesis product (5), from which a recycled gas (2) comprising hydrogen and nitrogen is separated in order to be recirculated in order to form the ammonia synthesis gas (3). The flow rate of the recycled gas (2) is controlled via the recycle compressor (V2), which is integrated into a control circuit as an actuator and the conveying capacity of which can be set independently of the conveying capacity of the make-up gas compressor (V1). The invention is characterized in that the control circuit is designed with a higher-level control system which outputs a control signal that is based on the load of the ammonia reactor in order to change the conveying capacity of the recycle compressor (V2), said control signal being corrected by a PID control circuit in such a way that the pressure in the ammonia reactor (R) is always within a specified value range.

METHOD FOR OPERATING AN AMMONIA SYNTHESIS PROCESS AT PARTIAL LOAD, AND PARTIAL-LOAD-CAPABLE AMMONIA SYNTHESIS PROCESS

Resumen de: WO2025195682A1

The invention relates to a method and a device for synthesizing ammonia (8), wherein a gas mixture (1) comprising hydrogen and nitrogen is provided with a temporally fluctuating mass flow in order to form an ammonia synthesis gas (3), which is converted into an ammonia-containing synthesis product (5) in an ammonia reactor (R) after a compression step (V2) and from which a recycled gas (2) comprising hydrogen and nitrogen is separated in order to be returned via a return line in order to form the ammonia synthesis gas (3), the mass flow of the recycled gas (2) being controlled via an adjustable throttle device (b) which is provided in the return line (2) and is integrated into a control circuit as an actuator. The invention is characterized in that the control circuit is designed with a higher-level closed-loop control system that outputs an actuating signal, which is based on the load of the ammonia reactor, for changing the degree of opening of the throttle device (b), said actuating signal being corrected by a PID control circuit in such a way that the pressure in the ammonia reactor (R) is always within a specified value range.

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.

SYNTHETIC METHANOL HAVING LOW DEUTERIUM CONTENT FROM NON-FOSSIL RESOURCES

Resumen de: US2025296902A1

A Process for making methanol having a deuterium content below 90 ppm, based on the total hydrogen content, comprising the steps: (a) providing hydrogen with a deuterium content below 90 ppm, based on the total hydrogen content, by water electrolysis using electrical power that is generated at least in part from non-fossil, renewable resources; (b) providing carbon dioxide; (c) reacting hydrogen and carbon dioxide in the presence of a catalyst to form methanol.

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%.

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).

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).

Elektrolysesystem und Verfahren zum Betreiben eines Elektrolysesystems

Resumen de: DE102024202621A1

Die vorgestellte Erfindung betrifft ein Verfahren (100) zum Betreiben eines Elektrolysesystems (200), wobei das Verfahren (100) das Verdampfen (101) einer Flüssigkeit in einem Zellstapel (101) des Elektrolysesystems (200), um eine Temperatur einer Zelle (300) des Elektrolysesystems (200) einzustellen und das Kontrollieren (103) des Verdampfens der Flüssigkeit durch Einstellen eines Drucks und/oder einer Temperatur in dem Zellstapel (201) umfasst.

Verfahren zur Herstellung einer Elektrolysezelle sowie Elektrolysezelle

Resumen de: DE102024202623A1

Die Erfindung betrifft ein Verfahren zur Herstellung einer Elektrolysezelle (1), aufweisend eine Membran (2) sowie beidseits der Membran (2) angeordnete Schichten und/oder Lagen (3, 4, 5, 6) zur Ausbildung einer Anode (A) und einer Kathode (K), wobei mindestens einer Schicht und/oder Lage (3, 4, 5, 6) die Funktion eines Nukleierungshilfsmittels aufgeprägt wird, indem- die Schicht und/oder Lage (3, 4, 5, 6) aus einem Nukleierungsmaterial hergestellt wird,- ein Nukleierungsmaterial in die Schicht und/oder Lage (3, 4, 5, 6) ein- oder aufgebracht wird,- eine Kavitäten (7) ausbildende Oberflächenstruktur in die Schicht und/oder Lage (3, 4, 5, 6) eingebracht wird und/oder- die Schicht und/oder Lage (3, 4, 5, 6) hydrophob eingestellt wird, vorzugsweise mit Hilfe eines Nukleierungsmaterials.Die Erfindung betrifft ferner eine Elektrolysezelle (1) für einen Elektrolyse-Stack zur Herstellung von Wasserstoff.

Elektrolysesystem und Verfahren zum Betreiben eines Elektrolysesystems

Resumen de: DE102024202622A1

Die vorgestellte Erfindung betrifft ein Verfahren (100) zum Betreiben eines Elektrolysesystems (200).Das vorgestellte Verfahren (100) umfasst das Verdampfen (101) eines Elektrolyten in einem Zellstapel (101) des Elektrolysesystems (200), um eine Temperatur einer Zelle (300) des Elektrolysesystems (200) einzustellen und das Kontrollieren (103) des Verdampfens des Elektrolyten durch Einbringen eines Gasmassenstroms in das Elektrolysesystem (200), um einen Dampfpartialdruck in dem Zellstapel (201) einzustellen.

電解セルの製造方法

Nº publicación: JP2025138153A 25/09/2025

Solicitante:

本田技研工業株式会社

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.