Absstract of: EP4421040A1
The present disclosure relates to the field of integrated nitric acid and ammonia production. The nitric acid tail gas is, following depletion in NOx to 100 ppm or less, combined with hydrogen at least partly produced from a water electrolyzer. The tail gas being combined with hydrogen or the combined tail gas and hydrogen gas is further treated for removal of NO<sub>x</sub>, CO, CO<sub>2</sub> and O<sub>2</sub> and compressed for synthesizing ammonia. At least part of the compression is performed prior to the further treatment of the nitric acid tail gas being combined with hydrogen, or prior to the treatment of the combined tail gas and hydrogen gas.
Absstract of: EP4421314A1
An offshore wind turbine (1), comprising:a generator (5) for generating electrical power from wind power,a hydrogen production apparatus (10) for converting water (W) into hydrogen (H) by means of the generated electrical power, anda water-intake apparatus (15) for taking in water (W) from the sea (16) and/or an open water reservoir and supplying the water (W) to the hydrogen production apparatus (10),wherein the water-intake apparatus (15) comprises at least one UV-irradiation unit (22) for irradiating the water (W) .By use of the at least one UV-irradiation unit, the water supplied from the water-intake apparatus to the hydrogen production apparatus can be treated with UV-light for providing an antifouling treatment.
Absstract of: EP4421315A1
An offshore wind turbine (1), comprising:a hydrogen production apparatus (10) for converting water (W) into hydrogen (H),a water-intake apparatus (15) comprising a first and second pump (24, 25) for pumping water (W) from the sea (16) to the hydrogen production apparatus with a predetermined desired total pumping capacity (P<sub>d</sub>), the first and second pumps having first and second current pumping capacities (P<sub>c1</sub>, P<sub>c2</sub>), respectively, anda control device (26) for controlling the first and second pumps such that:both the first and second current pumping capacities are non-zero and their sum is equal to or larger than the desired total pumping capacity, and/orthe first and second pumps alternatingly deliver the predetermined desired total pumping capacity.By having the two pumps and avoiding long idle times of the pumps, the availability of the water-intake apparatus is increased.
Absstract of: GB2627423A
A stand-alone, electronically controlled system of producing real-time responsive, controlled hydrogen as an air additive for an internal combustion engine 2 or oil-fired heating system described. A plurality of hydrogen electrolyser cells 4, with membranes, are in communication with a power supply and the produced oxygen is vented to the atmosphere and the hydrogen outlet configured for use with an air inlet 7 of an internal combustion engine 2 (ICE) or an oil-fired heating system. An electronic hydrogen monitoring device (HECU) 3 controls the operation of the cells 4 via an engine sensor and thus varies the amount of power supplied to the cells 4 dependent on the interpolation of signals from the engine sensor.
Absstract of: AU2022394749A1
The intervention relates to an electrolysis unit A fluid manifold system is feeding electrolytic solution into the electrolytic cells and discharging the electrolytic solution out of the electrolytic cells. The cavity of an expandable closing means is pressurized so that its shell expands and the volume of the cavity increases. The expandable closing means is arranged within the fluid manifold system, so that the fluid manifold system is open for the passage of electrolytic solution if the expandable closing means is in a depressurized state and the fluid manifold system is closed for the passage of electrolytic solution if the expandable closing means is in a pressurized state.
Absstract of: CA3235030A1
The present invention relates to a method for electrolysis of water (1 ) by means of a device (7) comprising a reversible cell for the production of hydrogen and oxygen. A solution of potassium hydroxide (KOH) is fed into the cell at a concentration of between 35% and 55% w/v, at a temperature of between 150°C and 374°C, and in a condition of minimum pressure of between 2.2 bar and 129.1 bar. The method provides for I) preparing in the mixer the aqueous alkaline solution of KOH having a concentration of potassium hydroxide (KOH) of between 35% and 55% w/v; II) heating said aqueous alkaline solution to a temperature of between 150°C and 374°C; III) increasing the pressure to maintain the aqueous alkaline solution in the liquid phase at a minimum pressure condition of between 2.2 bar and 129.1 bar; IV) passing the water through the hydrophobic layer (3) of each electrode and reaching the respective catalyst layer (5) to catalyse a reduction phase of said hydrogen or an oxidation phase of said oxygen and the porous electrode layer (4) to carry out said reduction and said oxidation respectively; V) collecting gaseous hydrogen and oxygen released from phase IV).
Absstract of: CN118140012A
The invention relates to an electrolytic cell (100) for generating hydrogen, comprising: a housing (102) comprising an electrolyte chamber (104); two electrodes (108, 112) for decomposing the electrolyte water, at least one of the two electrodes being permeable to gases produced by the decomposition of the electrolyte water, where the at least one permeable electrode (108) has a first surface (114) facing the electrolyte chamber and a second surface (116) facing the first gas collection chamber (106); an electrolyte supply circuit (130) for supplying electrolyte water to the electrolyte chamber; and a control unit (160) and/or a mechanical control for controlling a pressure drop across the at least one permeable electrode between the electrolyte chamber and the first gas collection chamber.
Absstract of: EP4421433A2
A process and apparatus for utilization of an absorption chiller for hydrogen production can include an arrangement configured for providing at least one heated waste stream of fluid from at least one hydrogen production unit to an absorption chiller generator to power the absorption chiller. Coolant can be generated via the heated waste stream for feeding coolant from the generator to an evaporator for cooling a chilling medium to a pre-selected chilling temperature to provide cooling to one or more process elements. The warmed chilling medium can be returned to the absorption chiller evaporator for subsequent cooling back to the pre-selected chilling temperature to provide a closed-circuit cooling arrangement. The waste fluid fed to the generator can be output as a cooled waste fluid for returning to hydrogen production for further use or be output for treatment and/or disposal.
Absstract of: CA3234979A1
The present disclosure relates to a method to produce an oxygen evolution reaction electrode catalyst assembly comprising a dendritic nickel foam. The method is remarkable in that it comprises the steps of (a) providing a dendritic nickel foam material; (b) etching the dendritic nickel foam material by placing it in a etch solution being an acidic aqueous solution or an aqueous solution of metal chloride and recovering an etched dendritic nickel foam with nickel dendrites showing a chimney-like structure.
Absstract of: EP4421024A1
A device for generating hydrogen (100) from water in a liquid state comprising a hydrolysis chamber (101) which is configured to contain a variable volume of water in a liquid state at ambient temperature and atmospheric pressure, this volume of water being the element processed to obtain hydrogen and other gases by the implosion of a plurality of bubbles generated inside the hydrolysis chamber (101) due to a change in pressure conditions; and a second gas chamber (110) separated from the first hydrolysis chamber (101) by means of gas separation means (106,107); and wherein said second gas chamber (110), in its upper part, comprises a gas outlet (103) configured to facilitate the exit of the gases resulting from the process.
Absstract of: EP4421210A1
Provided is a water electrolysis system (10) that obtains hydrogen by water electrolysis with a water electrolysis cell (13) including a water electrolysis stack (12) having a plurality of the water electrolysis cells (13), a water supply side passage (30) for supplying water to the water electrolysis stack (12), a hydrogen side passage (40) for discharging the hydrogen obtained in the water electrolysis stack (12), a plurality of voltage sensors (22a) for measuring voltages for the respective water electrolysis cells (13) or for each group of the water electrolysis cells (13), and a control device (23), where the control device (23) is configured to acquire a voltage from each of the voltage sensors (22a), determine whether the voltage is equal to or higher than a predetermined value and notify that an overvoltage has been generated when it is determined that the voltage is equal to or higher than the predetermined value.
Absstract of: CN118119649A
A proton conducting polymer has a plurality of repeating units of formula (I) for use in electrochemical reactions. The polymers can be synthesized from superacid-catalyzed polyhydroxyalkylation reactions of monomers Ar1 ', Ar2' and X1 ', followed by nucleophilic substitution or grafting reactions, and optionally acidification reactions, Proton exchange membranes and membrane electrode assemblies made from the polymers are also described. # imgabs0 #
Absstract of: EP4421211A1
An object of the present invention is to provide an electrode assembly for water electrolysis, in which an electrolyte membrane is kept from being deteriorated. The present invention provides an electrode structure for water electrolysis, including an anode electrode and a cathode electrode disposed to face each other, characterized in that at least one of the anode electrode and the cathode electrode includes a porous component and a reticular component in order from the facing surface side, and the standard deviation of a pressure distribution at the surface of contact between the anode electrode and the cathode electrode, determined by the following measurement method, is 2.7 MPa or less.<Measurement Method>After a test piece that has a pressure measurement film sandwiched between the anode electrode and the cathode electrode is pressurized at 4 MPa for 2 minutes, the pressure distribution obtained by a pressure analysis from a color image of the pressure measurement film, obtained from a pressure image analysis system, is defined as a pressure distribution at the surface of contact between the anode electrode and the cathode electrode, and the standard deviation of the pressure distribution is determined.
Absstract of: AU2022435941A1
A wind turbine is provided that comprises a nacelle (10) configured to be arranged on a wind turbine tower (103), a nacelle housing (11) of the nacelle (10), wherein the nacelle housing (11) is configured to house at least part of an electrical power generation system (20) of the wind turbine (100), and a hydrogen production system (30). The hydrogen production system (30) comprises an electrolyzer (31) configured to receive electrical power from the electrical power generation system (20), wherein the electrolyzer (31) is arranged inside said nacelle housing (11) of the nacelle (20) in which at least said part of the electrical power generation system (20) is arranged. One or more other components (32, 33, 34, 35, 36, 37, 38) of the hydrogen production system (30) are arranged at a base (105) of the wind turbine tower (103) and/or within the wind turbine tower (103).
Absstract of: US2023272544A1
A hydrogen generator with hydrogen leakage self-aware function comprises an electrolytic module, an integrated passageway device, a condensate filter, a humidification cup, a housing, an internal hydrogen sensing component, and a monitoring device. The electrolytic module is configured to electrolyze an electrolyzed water to generate a gas comprising hydrogen. The integrated passageway device comprises gas inlet passageway and a gas outlet passageway. The condensate filter is configured for filtering the gas comprising hydrogen. The humidification cup is configured for humidifying the gas comprising hydrogen. The gas comprising hydrogen flows through the condensate filter and the humidification cup by the way of the integrated passageway device. The internal hydrogen sensing component is configured in the housing for sensing the hydrogen concentration in the housing to generate an internal sensing result. The monitoring device is coupled to the internal hydrogen sensing component. The monitoring device controls the operation of the hydrogen generator according to the internal sensing result to avoid the hydrogen generator from the problem caused by hydrogen.
Absstract of: WO2023118492A2
It is described a high-pressure alkaline electrolyzer for splitting water into hydrogen and oxygen, said electrolyzer comprising a stack of electrolysis cells (1), with channels supplying lye to the cathodes and anodes and channels conducting hydrogen from the cathodes and oxygen from the anodes. The electrolyzer includes first and second lye inlet channels (4a, 4b), a multitude of first intermediate lye channels (5a) conducting lye from the first lye inlet channel (4a) to each cathode (3a) in the stack, a multitude of second intermediate lye channels (5b) conducting lye from the second lye inlet channel (4b) to each anode (3b) in the stack, wherein the hydrogen conducting channels include a common hydrogen outlet channel (7a) and a multitude of intermediate hydrogen channels (8a) conducting hydrogen from each cathode (3a) to the common hydrogen outlet channel (7a), and the oxygen conducting channels include a common oxygen outlet channel (7b) and a multitude of intermediate oxygen channels (8b) conducting oxygen from each anode (3b) to the common oxygen outlet channel (7b).
Absstract of: CN117616156A
The object of the invention is a system for electrolytic power conversion, the system comprises electrolytic cell cells arranged as a battery pack (103) controllably connected in series, means (142) for electrolytic operation at a first voltage in the range of 1.0 V to 2.5 V per cell, and means (144) for at least intermittently withdrawing current from the battery pack at a second voltage in the range of 0.4 V to 1.0 V per cell. The system comprises at least one capacitor bank (146) held at a first voltage and at least one capacitor bank (148) held at a second voltage, the capacitor banks (146, 148) and the battery pack (103) having a common pole for connecting at least one bidirectional non-isolated DC/DC converter (150) of the first and second voltage capacitor banks. The system further comprises means (152) for controlling the first and second voltage levels and, for each controllable battery pack (103), at least one half-bridge switch pair (154) for individually alternating between the first and second voltage levels applied to the battery pack (103) to prevent imbalance aggravation and battery degradation.
Absstract of: JP2024114480A
【課題】原材料の比率が一定に保たれる水素発生材料を提供する。【解決手段】水素化ホウ素ナトリウムの粉末と、酸の粉末とを含む。【選択図】なし
Absstract of: US2024238746A1
The invention relates to a thermal converter (1, 2) for generating from a parent compound a first fluid of first molecules (H2) with a first molecular weight and a second fluid of second molecules (O2) with a second molecular weight, whereby the first molecular weight of the first molecules (H2) is less than the second molecular weight of the second molecules (O2).In order to improve the efficiency of the thermal converter, the thermal converter comprises a spray device (18) for generating from the parent compound in fluid form a spray, which is supplied to a reaction device (1) for splitting the parent compound into a mixture compound of the first molecules (H2) and the second molecules (O2).
Absstract of: DK202300143A1
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: a. through interconnection endplates are supplied with alkaline electrolyte at elevated pressure by common electrolyte supply pipes and further, b. 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, c. pull first electrically interconnected current injection electrodes adjacent to interconnection endplates to zero electrical potential through a zero potential conductor, and d. 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.
Absstract of: AU2023218352A1
A start-up process for conditioning an electrolysis system containing ionically conductive membrane, such as a poly electrolyte multilayer coated proton exchange membranes, to reduce the break-in period is described. The conditioning involves heating the electrolysis feed, the electrolysis system, or both at a temperature above the desired operating temperature to achieve faster startup. In some cases, the voltage is controlled to avoid damage to the sample.
Absstract of: WO2023099877A2
An electrolyser (200) comprising: a cathode structure comprising a first PCB plate (202) and an electrically conductive substrate (220); an anode structure comprising a second PCB plate (204) and an electrically conductive substrate (220); an anion exchange membrane (218) located between the cathode structure (202) and the anode structure (204); two transport layers, (214, 216), one transport layer (216) disposed between the anode structure (204) and the anion exchange membrane (218) and one transport layer (214) disposed between the cathode structure (202) and the anion exchange membrane (218); and at least one fluid path to supply an electrolyte to the electrolyser (200).
Absstract of: AU2023220958A1
Tantalum nitride and specifically a novel Ta
Absstract of: WO2024173620A1
A doped silica layer on a substrate comprises a substrate and a doped silica layer that has a thickness of 5 to 1000 nm, and a dopant: silicon atomic ratio of 0.5:99.5 to 15:85. The dopant is preferably P+5. The invention includes an electrolyzer comprising the doped silica layer and a method of electrolyzing water to produce hydrogen using the electrolyzer. The doped silica can be made by applying a silica layer by atomic layer deposition (ALD) and treating the silica layer with a phosphorus gas in which phosphorus is in the +3 valence state.
Nº publicación: WO2024172235A1 22/08/2024
Applicant:
SK ECOPLANT CO LTD [KR]
SK ECOPLANT CO., LTD
Absstract of: WO2024172235A1
The hydrogen gas processing module includes a drying unit configured to dry a supply gas including hydrogen gas and water vapor produced using a solid oxide water electrolysis cell, a vacuum unit configured to maintain the pressure of the supply gas discharged from the drying unit within a predetermined range, and a compression unit that increases the pressure of the supply gas discharged from the vacuum unit.