Absstract of: WO2024170767A1
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.
Absstract of: WO2024170498A2
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.
Absstract of: WO2024170774A1
The present invention relates to a method of producing green hydrogen and associated products from pyrite separated from mine waste (e.g., disposed tailings or active tailings streams) in an energetically self-sustained process. This is achieved by a method according to the present invention comprising the following steps: (a) separation and enrichment of a mine waste material comprising pyrite to obtain a pyrite concentrate, (b) oxidation of the pyrite concentrate to obtain SO2 gas; (c) separation of the SO2 gas; (d) utilization of SO2 gas from step (c) to generate H2 gas and H2SO4 via a SO2-depolarized electrolyzer (SDE) process or a sulfur-iodine-cycle (S-I-cycle) process.
Absstract of: US2024279825A1
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: US2024279826A1
A system for the circular production of hydrogen and oxygen with feedback of residual thermal energy, recovered in the Stirling engine stage and in the electrolysis stage, to increase the efficiency of the process of subsystems that transform the conversion of heat into electrical energy to operate a hydrogen electrolyzer.
Absstract of: US2024279563A1
Operating a natural gas (NG) processing plant, including receiving feed natural gas and processing the feed natural gas to give product natural gas. The processing includes removing acid gas, water, and non-methane hydrocarbons from the feed natural gas. In the NG processing plant, fuel is provided to a furnace and combusted in the furnace to heat a boiler and an HRSG to generate HP steam that drives a turbine to generate electricity and convert the HP steam to LP steam. Excess LP steam in the NG processing plant is subjected to electrolysis, thereby generating hydrogen gas, and the hydrogen gas combined with the fuel for combustion in the furnace.
Absstract of: US2024280322A1
An apparatus for metallurgical heat-treatment includes a solid-oxide electrolyser, a furnace and a heat-exchanger. The electrolyser is arranged to electrolyse water and provide resulting hydrogen to the furnace. A first portion of the hydrogen from the electrolyser is combusted in a combustor to heat the furnace. A second portion provides a treatment atmosphere including hydrogen for the heat-treatment of a metal or metal alloy object. Water vapour output by the combustor is provided to the heat-exchanger which transfers heat within the water vapour to the solid-oxide electrolyser to improve or maintain its efficiency. In contrast to apparatus of the prior art, the apparatus does not produce carbon dioxide at the point of use. By applying waste heat, carried by the water vapour output from the combustor, to the electrolyser, the power consumption of the electrolyser is reduced for a given rate of electrolysis.
Absstract of: US2024279054A1
The present disclosure relates to methods and reactors for generating of gas and specifically for generation of oxygen gas and hydrogen gas.
Absstract of: US2024279055A1
The technology relates to a method of producing synthesis gas comprising carbon monoxide (CO) and hydrogen (H2), wherein the synthesis gas is produced by a reduction reaction of a first flow comprising a carbon source and an excess of hydrogen in contact with an Oxy-flame. The hydrogen comes from a reducing stream, a first portion of which ends up in the first flow, and a second part of which is used to generate the Oxy-flame by combustion of the hydrogen in the presence of a second flow comprising oxygen (O2), the second flow coming from an oxidizing stream. The first flow and the second flow are at a distance from each other such that the Oxy-flame supports the reaction between the carbon source and the hydrogen. A reactor, which can have different configurations, is also proposed for implementing the method.
Absstract of: US2024279829A1
Provided are an iridium-manganese oxide composite material and an iridium-manganese oxide composite electrode material that are inexpensive and have high catalytic activity for use in an anode catalyst for oxygen evolution associated with water electrolysis. Also provided are methods for producing the same. An iridium-manganese oxide composite material includes a manganese oxide and iridium distributed on at least a surface of the manganese oxide, the iridium having a metal valence of 3.1 or greater and 3.8 or less. An iridium-manganese oxide composite electrode material includes a conductive substrate formed of a fiber, with the iridium-manganese oxide composite material being coated on at least a portion of the conductive substrate.
Absstract of: US2024279827A1
An electrode plate (1) for an electrolysis system (10), said electrode plate being made of sheet metal, in particular for producing hydrogen, has an active field (3) and a frame region (2) surrounding the active field, said frame region having a basic rectangular shape. The frame region (2) is formed on a base plane (E) of the undeformed sheet metal. The active field (3) has an embossed structure (6) in the form of individual embossed elements (14, 15, 16, 17) which are raised and recessed starting from the base plane (E), including a plurality of linear embossed strips (14, 15), which are positioned in an arrangement of rows and columns such that raised linear embossed strips (14) and recessed linear embossed strips (15) are formed in an alternating manner in the direction of the rows as well as in the direction of the columns, wherein all of the linear embossed strips (14, 15) of one row are inclined in an identical manner with respect to the longitudinal side of the active field (3) and a flow direction (DR) which is parallel thereto, and the linear embossed strips (14, 15) of the following row have an equal and opposite inclination.
Absstract of: US2024279823A1
An electrolytic cell for polymer electrolyte membrane electrolysis with a cathode half-cell and an anode half-cell is provided. The cathode half-cell and the anode half-cell being separated from one another by a polymer electrolyte membrane. The anodic half-cell has a gas diffusion layer. The gas diffusion layer is made from a fine-meshed metallic carrier material. An anodic catalyst layer with an anodic catalyst material is applied onto the polymer electrolyte membrane. The anodic catalyst layer is arranged adjacent to the gas diffusion layer, wherein a thin protective layer is applied in each case locally and selectively onto the fine-meshed carrier material in the area of the contact points between the gas diffusion layer and the adjoining anodic catalyst layer. The thin protective layer comprises iridium and/or iridium oxide so that the input of anodic catalyst material into the gas diffusion layer is inhibited.
Absstract of: US2024279830A1
The invention relates to a process for controlling an electrolyzer. Determination of four different electrolyte flow rates at certain positions in the electrolyzer makes it possible to determine a compensation flow rate which establishes a fluidic connection between the anode side and the cathode side of the electrolyzer. The compensation system makes it possible to achieve at least partial concentration compensation between the electrolyte concentration on the anode side and the electrolyte concentration on the cathode side. The compensation flow rate makes it possible to draw conclusions about the operating state of the electrolyzer. The compensation flow rate makes it possible to determine a permeation flow rate between the anode space and the cathode space of one or more electrolysis cells. The permeation flow rate is correlated with a predetermined differential pressure between the anode space and the cathode space which improves the efficiency of the electrolyzer.
Absstract of: US2024282991A1
A steam methane reformer-integrated fuel cell system includes at least one fuel cell including an anode, a cathode, and an electrolyte matrix. The system includes a steam methane reformer, a water-gas shift reactor, an absorber column, and a pressure swing adsorption (PSA) system. The PSA system is configured to purify the second product stream to output (1) a third product stream of the PSA system having a fourth concentration of hydrogen that is greater than the third concentration of hydrogen and (2) a PSA tail gas. The at least one fuel cell is configured to receive the PSA tail gas from the PSA system as an anode feed gas.
Absstract of: AU2023245260A1
Provided is a method for producing an electrolysis electrode that is provided with a catalyst that has excellent catalytic activity such as having a low oxygen overvoltage and that has excellent stability such as having less loss of a catalyst component such as iridium (Ir). This method is for producing an electrolysis electrode, and comprises a step for applying, on the surface of an electrically conductive substrate, a catalyst precursor composition containing an iridium component or the like, a step for obtaining a primary fired body by heating the electrically conductive substrate on which the catalyst precursor composition is applied, and a step for forming, on the surface of the electrically conductive substrate, a catalyst layer containing iridium oxide by heating the primary fired body. The iridium component is an iridium compound including a carboxy group. In the catalyst precursor composition, the nickel (Ni) content is 10-35 mass%, the cobalt (Co) content is 25-55 mass%, and the iridium (Ir) content is 15-55 mass% (provided that Ni+Co+Ir=100 mass% is satisfied).
Absstract of: AU2022443209A1
The invention relates to a device for generating hydrogen gas and oxygen gas from water, comprising: a case, which forms a hydrolysis chamber designed to contain an amount of water; electrode means that act as a cathode and as an anode; and gas-separating means, disposed in the hydrolysis chamber between the cathode and the anode, which comprise a permeable membrane segment suitable for preventing the generated hydrogen gas and oxygen gas from passing through the permeable membrane segment and mixing together, the hydrolysis chamber being divided into a first portion that contains the cathode and a second portion that contains the anode, wherein the first and second chamber portions are in fluid communication with respective pipes for hydrogen gas and for oxygen gas. The invention also relates to a system for the same purpose, comprising at least one device as described above.
Absstract of: AU2023215182A1
A process for the production of sustainable aviation fuel (SAP) with low carbon intensity. The jet fuel is produced from the reaction of hydrogen from the electrolysis of water with captured carbon dioxide. The hydrogen and carbon dioxide are reacted to product a stream comprising carbon monoxide. Hydrogen and carbon monoxide are reacted to produce n-alkanes. Alkanes are hydroisomerized to produce sustainable aviation fuel with low carbon intensity.
Absstract of: US2024278204A1
A hydrogen production system includes: hydrogen compound members, a first container, a second container having an internal temperature that is lower than the internal temperature of the first container, and a water supplying device that supplies water to the second container. The hydrogen compound member accommodated in the first container is movable into the second container, and the hydrogen compound member accommodated in the second container is movable into the first container.
Absstract of: US2024280093A1
A compression apparatus includes an electrolyte membrane, an anode disposed on a principal surface of the electrolyte membrane, a cathode disposed on another principal surface of the electrolyte membrane, and a voltage applicator that applies a voltage between the anode and the cathode. Upon the voltage applicator applying a voltage between the anode and the cathode, the compression apparatus causes protons extracted from an anode fluid fed to the anode to move to the cathode through the electrolyte membrane and produces compressed hydrogen. The compression apparatus includes a face seal disposed on an outer periphery of the anode and an elastic material interposed between the anode and the face seal.
Absstract of: US2024277756A1
The invention relates to silicon particles for use in therapy, wherein said silicon particles are prepared via chemical vapor deposition (CVD).
Absstract of: US2024280048A1
The present disclosure provides systems and methods for processing ammonia. The system may comprise one or more reactor modules configured to generate hydrogen from a source material comprising ammonia. The hydrogen generated by the one or more reactor modules may be used to provide additional heating of the reactor modules (e.g., via combustion of the hydrogen), or may be provided to one or more fuel cells for the generation of electrical energy.
Absstract of: WO2024169471A1
An electrolytic generator (100), a water treatment assembly (1000), a water heater assembly, and a water heating system. The electrolytic generator (100) comprises a housing (10), an anode (20), and a cathode (30). An electrolysis chamber (10a) is formed in the housing (10), the housing (10) is provided with a first water inlet (111) and a first water outlet (112) which are in communication with the electrolysis chamber (10a), and the first water inlet (111) is used for being communicated with a drainage hole of a water heater; the anode (20) is provided with an anode plate (21), and the anode plate (21) is provided in the electrolysis chamber (10a); the cathode (30) is provided with a cathode plate (31), and the cathode plate (31) is provided in the electrolysis chamber (10a) and is spaced apart from the anode plate (21).
Absstract of: WO2024171696A1
The purpose of this invention is to improve energy efficiency in an electrolysis cell system. An electrolysis cell system (10) comprises: an electrolysis cell (11) that has an oxygen electrode and a hydrogen electrode, wherein water vapor supplied to the hydrogen electrode is electrolyzed to generate hydrogen at the hydrogen electrode and generate oxygen at the oxygen electrode; a supply system (20) supplying air for adjusting the temperature of the electrolysis cell (11) to the electrolysis cell (11); a discharge system (30) through which air discharged from the electrolysis cell (11) flows; a circulation system (40) directing the air discharged to the discharge system (30) to the supply system (20); and a supply air temperature adjusting heat exchanger (28) for adjusting the temperature of air supplied to the electrolysis cell (11).
Absstract of: WO2024173732A1
A system and a method of producing alkaline hydrogen-rich water with acidic oxygen-rich water as byproduct are disclosed. The method begins by filling a first quantity of source water into a first container portion of an electrolysis container through a first container inlet. A second quantity of source water is also filled into a second container portion of the electrolysis container through a second container inlet. An electrolysis process is then executed between the first quantity of source water and the second quantity of source water with a cathode, an anode, and a semipermeable ion-exchange membrane of the electrolysis container. After the electrolysis process is executed, a quantity of alkaline hydrogen-rich water is released out of the first container portion through a first container outlet of the electrolysis container, while a quantity of acidic oxygen-rich water is released out of the second container portion through a second container outlet.
Nº publicación: WO2024172438A1 22/08/2024
Applicant:
LG CHEMICAL LTD [KR]
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Absstract of: WO2024172438A1
The present invention relates to a catalyst for the decomposition of ammonia, and a method for the decomposition of ammonia.