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953
resultados
Última actualización
20/12/2024 [09:16:00]
Resultados 25 a 50 de 953
Resumen de: WO2024251410A1
The invention relates to a compression system (10a) for compressing hydrogen and nitrogen in a plant for producing ammonia, said compression system comprising: a plurality of first compressors (14, 15, 16), which are coupled to a first integral gearbox (13), for compressing the hydrogen and nitrogen; and a first electric machine (18), which is coupled to the first integral gearbox (13), for driving the first compressors (14, 15, 16) coupled to the first integral gearbox (13).
Resumen de: AU2023266683A1
Process and plant for producing methanol, the process comprising the steps of: a) providing a raw synthesis gas stream; b) water gas shifting at least a portion of the raw synthesis gas stream, thereby producing a shifted synthesis gas; c) preparing a separate hydrogen containing stream and a separate oxygen containing stream by electrolysis of a water feedstock; d) introducing at least a portion of the separate hydrogen containing stream into shifted synthesis gas, thereby producing a methanol synthesis gas; and e) converting the methanol synthesis gas into said methanol.
Resumen de: AU2023286836A1
A first aspect of the invention relates to a process for production of a stabilized hydrocarbon product from solid feedstock, said method comprising the steps of, providing a solid feedstock for thermal decomposition, directing said solid feedstock for thermal decomposition to a thermal decomposition process to provide a fluid product of thermal decomposition and a solid phase, directing as raw feedstock at least an amount of said fluid product of thermal decomposition and an amount of hydrogen to contact a material catalytically active in hydrogenation of conjugated diolefinic carbon-carbon bonds under active conditions for hydrogenation of conjugated diolefinic carbon-carbon bonds, characterized in the ratio between hydrogen and raw feedstock is from 1 Nm
Resumen de: AU2023277213A1
The present invention is directed to piezo photocatalytic process for the production of hydrogen from water, wherein the process comprises the steps of: (a) providing non-metal-doped barium titanate which includes at least one defect; (b) contacting the non-metal-doped barium titanate provided in step (a) with water to form a mixture; and (c) subjecting the mixture formed in step (b) to: (i) actinic radiation; and (ii) mechanical force, to produce hydrogen from the water, as well as non-metal-doped barium titanate and methods of production thereof.
Resumen de: WO2024252801A1
Provided is a hydrogen gas production system capable of producing, with a high recovery rate, a hydrogen gas having a deuterium D content ratio equal to or higher than that in raw material water. A hydrogen gas production system 100 according to the present invention comprises: a first tank 10 that accommodates raw material water including heavy water; an electrolysis device 30 that electrolyzes the raw material water to generate a hydrogen gas; a reservoir 50 that stores the hydrogen gas; a liquid feed device 20 that feeds the raw material water from the first tank 10 to the electrolysis device 30; and a gas feed device 40 that feeds the hydrogen gas generated in the electrolysis device 30 to the reservoir 50. In the system 100, the liquid feed device 20 is controlled so as to replenish the raw material water from the first tank 10 to the electrolysis device 30 as the raw material water remaining in the electrolysis device 30 decreases, the gas feed device 40 is controlled so as to continuously feed the hydrogen gas generated in the electrolysis device 30 to the reservoir 50 before, during, and after the replenishment, and the reservoir 50 stores the hydrogen gas generated in the electrolysis device 30 before, during, and after the replenishment.
Resumen de: WO2024252045A1
The invention relates to a hydrogen fuel cell obtained by solar-powered ionisation equipment characterised in that it consists of a fuel cell (CD) and hydrogen generation equipment, wherein the elements of the assembly are the following: A fuel cell (50), consisting of an outer perimeter cylindrical profile containing two rust-resistant sheets wound into a spiral on themselves and having a varying length; an outer anode membrane (51), an inner cathode membrane (52) and an electrolyte (53) between them in a closed circuit (57), with an outer cooling device (58) and an outermost catalysing membrane (59), where the produced electricity outputs (+) (55) and (-) (56) are at the end of the membranes (51) and (52), and the hydrogen is formed by attached hydrogen generation equipment.
Resumen de: WO2024250842A1
A hydrogen production system, relating to the technical field of electrolytic hydrogen production. The hydrogen production system comprises an electrolysis device, an oxygen collection and treatment device, and a dehydrogenation device. The electrolysis device is provided with an oxygen side outlet, and the oxygen side outlet is used for outputting an oxygen-containing mixture. The oxygen collection and treatment device is communicated with the oxygen side outlet and used for treating the oxygen-containing mixture to obtain a first gas, and the first gas is a mixed gas containing hydrogen and oxygen. The dehydrogenation device is communicated with the oxygen collection and treatment device and used for reducing the concentration of hydrogen in the first gas.
Resumen de: WO2024250374A1
An rGO-modified InGaN nanorod photoelectrode material, and a preparation method therefor and the use thereof, which belong to the technical field of photoelectrodes. The photoelectrode material comprises an Si substrate, an InGaN nanorod layer arranged on the Si substrate, and an rGO layer arranged on the surface of the InGaN nanorod, wherein the rGO layer is made of a two-dimensional nanosheet material. The electrode material is used for preparing a photoanode, which serves as a photoanode for hydrogen production by means of photoelectrochemical water decomposition. The use of rGO not only broadens the absorption spectrum range of the photoelectrode material and effectively passivates the surface state of the nanorod, but also forms a heterostructure with the InGaN nanorod, which effectively reduces the initial potential, promotes the dissociation and transport of charge carriers and the oxidation reaction of the charge carriers on the electrode/electrolyte interface, and greatly improves the photoelectric conversion efficiency, thereby providing an effective strategy for achieving efficient PEC water decomposition hydrogen production.
Resumen de: US2024410067A1
A method of generating hydrogen gas including applying a potential of greater than 0 to 1.0 volts (V) to an electrochemical cell. The electrochemical cell is at least partially submerged in an aqueous solution. On applying the potential the aqueous solution is reduced thereby forming hydrogen gas. The electrochemical cell includes an electrocatalyst and a counter electrode. The electrocatalyst includes a substrate, strontium titanate (SrTiO3) nanoparticles, and cadmium selenide (CdSe) nanoparticles. The SrTiO3 nanoparticles have a substantially spherical shape. The CdSe nanoparticles have a polygon shape. The CdSe nanoparticles are distributed within a network of the SrTiO3 nanoparticles on the surface of the substrate.
Resumen de: US2024410065A1
The present invention discloses a rose petal effect-based biomimetic electrode and a membrane-less water electrolysis reactor utilizing the same, belongs to the technical field of catalytic technology for water electrolysis. The electrode has a surface exhibiting a microscopically alternating hydrophilic-hydrophobic periodic structure. The hydrophilic parts ensure good contact between the catalyst and the electrolyte solution, thereby guaranteeing the electrode's catalytic performance. The hydrophobic parts allow the gas generated at the electrode surface to be discharged through internal porous channels, preventing the formation of visible bubbles on the electrode surface and thereby fundamentally avoiding issues caused by bubble formation. The membrane-less water electrolysis reactor utilizing the electrode can eliminate bubble formation on the electrode surface, thereby avoiding problems related to bubble covering catalytic sites, bubble resistance, and gas mixing. Additionally, it reduces electrolyte resistance loss, making the performance of the membrane-less water electrolysis reactor approach that of membrane electrode reactors.
Resumen de: US2024410058A1
A method for electrolysis of water using a device having a reversible cell for the production of hydrogen and oxygen is disclosed. The method includes preparing an aqueous alkaline solution of KOH having a concentration of potassium hydroxide (KOH) of between 35% and 55% w/v in a mixer; heating the aqueous alkaline solution to between 150° C. and 374° C.; 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; passing the water through the hydrophobic layer of each electrode and reaching the catalyst layer to catalyse a reduction phase of the hydrogen or an oxidation phase of the oxygen and the porous electrode layer to carry out the reduction and oxidation; and collecting the released gaseous hydrogen and oxygen.
Resumen de: US2024410059A1
A water electrolysis method according to the present disclosure includes, by using a power source, an electrolytic solution that is capable of transferring OH-ions, and a single nickel-hydrogen battery that has a positive electrode connected to the power source, and a negative electrode connected to the power source, and that is immersed in the electrolytic solution, applying, by the power source, a potential difference in which a potential of the positive electrode is higher than a potential of the negative electrode, to generate oxygen gas from the positive electrode and hydrogen gas from the negative electrode.
Resumen de: US2024410060A1
A water electrolysis method according to the present disclosure includes, by using a power source, an electrolytic solution that is capable of transferring OH-ions, and a single nickel-hydrogen battery that has a positive electrode connected to the power source, and a negative electrode including lanthanum and connected to the power source, and that is immersed in the electrolytic solution, applying, by the power source, a potential difference in which a potential of the positive electrode is higher than a potential of the negative electrode, to generate oxygen gas from the positive electrode and hydrogen gas from the negative electrode.
Resumen de: US2024410062A1
A method for producing hydrogen gas through electrolysis of a salt water solution using an electrode with a sedimentary rock portion includes placing a first electrode comprising a metallic material in a salt water solution and positioning the first electrode in a tower. The method further includes placing a second electrode comprising a metallic material portion and a sedimentary rock portion into the salt water solution. The method further includes allowing the salt water solution to permeate at least a portion of the sedimentary rock portion. The method further includes connecting a direct current (DC) power supply to the first and second electrodes. The method further includes applying, using the power supply, a DC voltage between the first and second electrodes, thereby causing electrolysis of at least a portion of the salt water solution and producing hydrogen gas in the tower.
Resumen de: US2024410063A1
An electrolyzer system comprises electrolyzer elements (101) each comprising an electrolyzer stack (104) constituted by electrolysis cells. Furthermore, each electrolyzer element comprises a water inlet (106), a hydrogen separator tank (107) having a hydrogen outlet (108), an oxygen separator tank (109) having an oxygen outlet (110), and a channel system (111) for conducting electrolyte from the hydrogen separator tank and from the oxygen separator tank to the electrolyzer stack. The electrolyzer stacks of the electrolyzer elements are electrically connected to each other so that direct voltage of the electrolyzer system is a sum of direct voltages of the electrolyzer stacks of two or more of the electrolyzer elements. The water inlets, the hydrogen outlets, and the oxygen outlets of different ones of the electrolyzer elements are galvanically separated from each other. This enables the direct voltage of the electrolyzer system to have a desired value with low stray electric currents.
Resumen de: US2024410061A1
Provided herein is an integrated water capture and electrolysis system for enhancing the efficiency of hydrogen production from water by an electrolyser, the method comprising operatively associating an atmospheric water capture apparatus with the electrolyser such that heat utilisation is relatively maximised and current density is relatively minimised. In an embodiment, the atmospheric water capture apparatus produces water, at least some of which is used for cooling a solar cell prior to injection into the electrolyser.
Resumen de: US2024409483A1
Described herein are techniques that may be performed in an Integrated Energy System (IES). The IES may include a power plant, an emission source, and a chemical processing plant. The IES may include one or more sub-plants configured to receive Carbon Dioxide from an emission source, convert a first portion of the Carbon Dioxide into Carbon Monoxide, receive Sodium Hydroxide, combine the Carbon Monoxide and the Sodium Hydroxide to produce Hydrogen gas, and combine, using a reaction chamber, a second portion of the Carbon Dioxide, the Carbon Monoxide, and the Hydrogen to produce Methanol.
Resumen de: US2024409477A1
A system for producing synthetic fuel comprises a reactor having a first reaction zone for implementing a first reaction in which carbon dioxide and hydrogen react to produce carbon monoxide and water, and at least one other reaction zone for implementing a second reaction in which carbon monoxide and hydrogen react to produce a fuel precursor, and a third reaction involving synthesizing fuel from said fuel precursor. The reaction zones are inter-connected in series by a fluid circuit is configured to circulate and recirculate fluid around the reactor to facilitate recycling of reactants and heat energy. The system facilitates low-energy. cost-efficient production of liquid e-fuels.
Resumen de: US2024409809A1
The present invention relates to a phosphor monomolecular compound, an organic transistor using same, and a water splitting and hydrogen production photocatalytic system using same. More specifically, the present invention comprises a water-soluble monomolecular compound including 1,5-naphthyridine-2,6-dione structure as a phosphor monomolecular compound.
Resumen de: US2024409400A1
A water splitting includes a centrifuge situated in the protective chamber and rotatable within the protective chamber such that constituents inside the centrifuge separate according to their molecular mass; an inlet fluidly connected to the centrifuge and configured to provide water to the centrifuge; and an outlet fluidly connected to the centrifuge and configured to remove hydrogen isolated from the water from the centrifuge. A method of isolating hydrogen from water in a reactor is also disclosed.
Resumen de: US2024413363A1
Method for conditioning an electrochemical cell unit (53) before putting the electrochemical cell unit (53) into operation for converting electrochemical energy into electrical energy as a fuel cell unit (1) and/or for converting electrical energy into electrochemical energy as an electrolytic cell unit (49) having stacked electrochemical cells (52) and channels for conducting a fuel and/or an electrolyte and channels for conducting an oxidizing agent and/or an electrolyte being formed in the electrochemical cell unit (53), the method having the steps of: providing a conditioning fluid; and conducting the conditioning fluid through the channels (12) for fuel and/or electrolytes and/or conducting the conditioning fluid through the channels (13) for oxidizing agents and/or electrolytes, wherein, during at least 50% of the duration of the method for conditioning the electrochemical cell unit (53), hydrogen is conducted as the conditioning fluid through the channels (13) for oxidizing agents and/or electrolytes.
Resumen de: WO2024252118A1
A method of producing a hydrogen stream and an oxygen stream and passing the hydrogen stream and the oxygen stream to a reverse water-gas shift reactor is described, the method comprising: providing a water stream to an electrolysis system configured to form: a hydrogen stream at a first pressure, and an oxygen stream at a second pressure; passing the hydrogen stream, a carbon dioxide stream, and the oxygen stream to the reverse water-gas shift reactor, wherein the first pressure is lower than the second pressure.
Resumen de: EP4474359A1
There is provided a producing device that can easily individually obtain acidic electrolyzed water, alkaline electrolyzed water, and mixed water while saving a space. A producing device (1) includes: an electrolytic bath (5) configured to produce acidic electrolyzed water and alkaline electrolyzed water; adjustment means (10) and (11) configured to adjust discharge and merging of the acidic electrolyzed water and the alkaline electrolyzed water produced in the electrolytic bath (5); one and another flow rate adjustment means (20) and (21) configured to adjust flow rates of the acidic electrolyzed water and the alkaline electrolyzed water merged by the adjustment means (10) and (11); and discharge portions (13), (14), and (17) capable of separately discharging the acidic electrolyzed water, the alkaline electrolyzed water, and the mixed water produced by merging the acidic electrolyzed water and the alkaline electrolyzed water.
Resumen de: CN118525426A
An HVDC system is provided that includes an AC/DC converter subsystem electrically connected to a renewable energy device, and a VSC subsystem. A method includes operating the renewable energy device to function as a voltage source to power an HVDC link between the AC/DC converter subsystem and the VSC subsystem; operating the VSC subsystem as a voltage source to energize at least one electrical load electrically connected thereto; if it is determined that the power production rate of the renewable energy device is not within the specified parameters, the device is operated to follow the VSC subsystem such that controlling the AC power output affects the power production rate. If it is within the specified parameter, the VSC subsystem is operated to follow the renewable energy device such that the VSC subsystem adjusts a property of its AC electrical output to match a property of power generated by the renewable energy device.
Nº publicación: GB2630842A 11/12/2024
Solicitante:
JOHNSON MATTHEY DAVY TECHNOLOGIES LTD [GB]
Johnson Matthey Davy Technologies Limited
Resumen de: GB2630842A
A method of producing hydrogen and oxygen streams and passing them to a reverse water gas shift reactor (RWGS) comprises providing a water stream 10 to an electrolysis system 12. The electrolysis system produces hydrogen stream 13 and oxygen stream 14, where the pressure of the hydrogen stream is lower than that of the oxygen stream. The hydrogen and oxygen streams and carbon dioxide stream 17 are passed to the RWGS reactor 18. The system may comprise a single type of electrolyser having an anode producing oxygen at a higher pressure than the cathode producing hydrogen, i.e. a differential pressure mode. Alternatively, the system may comprise first and second electrolysers, the first electrolyser producing hydrogen at the lower pressure and the second electrolyser producing oxygen at the higher pressure. Carbon monoxide enriched syngas 19 produced by RWGS may be further passed to a Fischer-Tropsch unit to form a hydrocarbon product.
BOPI
Sede Electrónica
