20 results about "Hydrogen production" patented technology

A gas generating process, which is for the continuous production of energy and hydrogen for rocket and other propulsion and is also for the continuous production of hydrogen, utilizes the reaction of metallic materials, particularly aluminum, with organic materials, particularly hydrocarbons provided as jet fuel, and with water or an oxidizer which is predominantly water. In comparison with related reactions, the reaction produces hot gases containing more hydrogen and the products have a lower temperature for the same specific impulse. The process incorporates organic liquids with metallic powders to produce desirable, lower molecular weight exhaust gas products; and the increased hydrogen is desirable for use with a fuel cell and in connection with propulsion of a super-cavitating underwater device. The process is advantageous in that a metal, in powdered form, and a hydrocarbon liquid may be provided together as a slurry or gel for effective metering. The metallic material may also be provided with the organic material in the form of a binder as used in solid propellants, and the organic material and water may be provided together in the form of a water containing liquid monopropellant. The hydrogen containing product gases from the reaction may be further reacted with suitable oxidizers for production of additional energy or steam. The reaction is particularly useful for underwater vehicles where ambient water is available and the reaction products may be used for propulsion.

The present invention provides a photocatalyst composite structure and a preparation method thereof. The photocatalyst composite structure has backbone-branch structural feature; the graphite type carbon nitride (g-C3N4) is the backbone, and carbon nanotubes(CNTs) grown in situ on the backbone chemical through vapor deposition (CVD) are the branches; and the nano photocatalyst coats on the entire backbone-branch complex structure surface. The invention has the advantages that the photocatalyst composite structure can degrade organic contaminants and realize photocatalytic water decomposition for hydrogen production under ultraviolet and visible light; in addition, the backbone-branch composite structure has large specific surface area, and can fully contact with organic pollutants and electrolyte solution to improve the photocatalytic efficiency.

The invention provides a cobalt sulfide material, a preparation method and application of the cobalt sulfide material. The cobalt sulfide material is prepared by the following steps: (1) mixing dimethyl aminodithioformic acid with cobalt chloride hexahydrate according to a mole ratio of 2 to 1 in water for reaction, thus obtaining a first product; (2) under the protection of inert gas, carrying out reaction on the dried first product at 500 to 900 DEG C for 2 to 3 hours, thus obtaining the cobalt sulfide material. The cobalt sulfide material provided by the invention can be applied to the field of hydrogen production from water through electro-catalysis.

The invention relates to a prussian blue analogue nanosheet array material and a water electrolysis application thereof, wherein a preparation method of the material comprises the following steps: 1)pretreating foamed nickel to serve as a matrix; 2) mixing a Co(NO3)2.6H2O solution with a Na2Fe(CN)5NO.H2O solution, and then stirring at room temperature until the solution is turbid to obtain a mixed solution; and 3) putting the matrix into the mixed solution, carrying out standing reaction for 2-48 h, and carrying out post-treatment to obtain the prussian blue analogue nanosheet array material.The material is used as a catalyst for water electrolysis reaction. Compared with the prior art, the prepared ultrathin prussian blue analogue nanosheet array material is simple in preparation process and low in cost, can be used for carrying out stable and efficient hydrogen evolution reaction, oxygen evolution reaction and total water decomposition under different current densities, and has huge potential value in large-scale hydrogen production application.

The invention relates to the technical field of nano photocatalytic material preparation and hydrogen production application thereof, and in particular relates to a silver sulfide/tungsten trioxide-based z-type photocatalytic material as well as a preparation method and application thereof, the silver sulfide/tungsten trioxide-based z-type photocatalytic material has a zero-dimensional/one-dimensional composite structure, the zero-dimensional structure is silver sulfide nano-particles, the one-dimensional structure is a tungsten trioxide nanorod, and the silver sulfide nano-particles are dispersed on the surface of the tungsten trioxide nanorod. WO3 and Ag2s are respectively provided with one-dimensional and zero-dimensional structures, and the migration path of photogenerated charges canbe shortened, so that the photogenerated charges are rapidly transferred to the surface of the material, and the composite probability of photogenerated carriers in a material body phase is reduced; the photogenerated charge transfer mode between Ag2SNPs and WO3NRs follows a z-type photo-catalytic charge transfer mechanism, while the photogenerated charge oxidation reduction capability is maintained, the separation efficiency of the photongenerated carriers is further improved, and the silver sulfide/tungsten trioxide-based z-type photocatalytic material has better performance of photocatalytic water decomposition for hydrogen production.

The invention relates to a multifunctional offshore wind power structure which comprises a pile body with the bottom arranged below a seabed surface, and seawater filtering and separating structures such as a wind turbine generator set arranged at the top end of the pile body. A folding type high-pressure nozzle is arranged on the outer wall of the pile body; a salt basking pond is arranged below the folding type high-pressure nozzle; a transparent water collecting cover body covers the outer part of the salt basking pond; and power umbrella drive skeletons are arranged in the centers of the salt basking pond and the transparent water collecting cover body. The multifunctional offshore wind power structure provided by the invention is compact and reasonable in overall structure; wind power generation, oxygen/hydrogen production, salt production and seawater desalination are organically integrated, so that collected resources are more diversified, and the most prominent load effectiveness problem in the wind power equipment is effectively solved; meanwhile, the structures of salt basking and seawater desalination are novel, so that the two resource extraction modes are optimized; and storage is easy, so that the possibility that the equipment structure is damaged is reduced.

The invention relates to the field of material preparation and photocatalysis, particularly to a three-phase heterojunction photocatalytic material synchronously constructed by a metallic compound, anoxide and a sulfide, and a preparation method thereof, wherein a metallic compound is respectively used as a precursor and a growth matrix, and in-situ hydrolysis is performed on the surface of the metallic compound to generate a metal oxide while a sulfide precursor grows in-situ on the surface of the metallic compound, so that the three-phase heterojunction photocatalytic material with a Z mechanism is constructed through synchronous growth. According to the preparation method provided by the invention, a three-phase heterojunction structure is constructed through synchronous in-situ growth, so that the high Schottky barrier caused by insufficient interface contact and large structure and component difference due to the conventional multi-step preparation method is reduced, the effective separation and transmission capacity of photo-generated charges is remarkably promoted, and the photocatalytic hydrogen production performance of the photocatalytic material is greatly improved. Thepreparation method is simple in process, has universality and high yield, and has application potential in the field of photocatalytic hydrogen production.

The invention relates to a hydrogen production system for electric peak regulation. The hydrogen production system comprises a hydrogen production device, a conveying pipeline and a hydrogen storage device which are sequentially connected; a conveying pump is arranged in the conveying pipeline, the electric energy input end of the hydrogen production device is connected to time-varying power generation equipment, and the time-varying power generation equipment comprises photovoltaic power generation equipment and wind power generation equipment. The conveying pipeline comprises a hydrogen conveying main pipe and a plurality of hydrogen conveying branch pipes; the conveying pump is arranged in the hydrogen conveying main pipe, and first electromagnetic valves are arranged in the hydrogen conveying branch pipes; sensors used for monitoring the capacity in the hydrogen storage device are arranged in the hydrogen storage device; the system further comprises a controller and a plurality of first relays, wherein the sensors are connected to the signal input ends of the controller respectively; coils of the first relays are connected to the signal output ends of the controller respectively, and contacts of the first relays are connected to the first electromagnetic valves respectively. Compared with the prior art, the system has the advantages of improving efficiency and safety and the like.

The invention discloses an apparatus used for hydrogen production through reforming of methanol-water. The apparatus comprises a storage container, a raw material conveying device, methanol-water conveying pipelines, a reforming device, a separating device, a hydrogen conveying pipeline and a control circuit board, wherein the raw material conveying device is separately connected with the storagecontainer and the reforming device through the methanol-water conveying pipelines and conveys the raw material methanol-water in the storage container into the reforming device; the reforming device is connected with the separating device; the separating device is connected with the hydrogen conveying pipeline and comprises a membrane separation unit; a reforming chamber comprises a hollow shell and a heating and gasification pipeline; a catalyst is arranged in the hollow shell; and the heating and gasification pipeline is partially or totally arranged in the hollow shell and wrapped by the catalyst. The apparatus used for hydrogen production through reforming of methanol-water can produce stable hydrogen through reforming of methanol-water and has high conversion rate; and the heating andgasification pipeline is well protected, so the service life of the apparatus is prolonged.

The invention relates to a CO2 zero-emission ammonia synthesis system and method based on iodine-sulfur semi-open type circulating hydrogen production and application of the CO2 zero-emission ammonia synthesis system and method. The system comprises an air separation device, an H2S preparation device, a Bunsen reaction device, an HI decomposition device and an NH3 synthesis device, by means of the system, hydrogen is prepared by decomposing water through a chemical method, reaction conditions are mild, the application range of the system in industrial practice is widened, energy consumption is reduced, the energy efficiency of the system is improved, and the system is a hydrogen production system which is low in energy consumption, zero in CO2 emission and capable of being industrially applied on a large scale.

The invention discloses a poly-generation system and method coupling aluminum energy storage and supercritical CO2 circular power generation. The system comprises a metal fuel aluminum energy storagesub-system and a supercritical CO2 circular power generation sub-system. According to the poly-generation system and method, aluminum energy storage based on metal fuel, supercritical CO2 circular power generation, hydrogen production and sodium carbonate and sodium bicarbonate production are effectively coupled, and the advantages that the energy storage density is high, the energy storage periodis long, permanent storage can be achieved, the fuel is cyclically regenerated and is free of consumption, poly-generation of electric power, hydrogen, sodium carbonate and sodium bicarbonate can beachieved, and global energy trade can be carried out conveniently are achieved.

The invention belongs to the technical field of argon recovery, and particularly relates to an argon recovery device for removing carbon monoxide through a rectification method and an operation method. The argon recovery device comprises an argon compressor, a deoxidizing reaction furnace, a cooler, an argon precooling and purifying system, and a rectification cold box; and a heat exchanger, an argon tower reboiler, a pure argon tower, a crude liquid argon throttle valve V2, a pure liquid argon throttle valve, a circulating liquid argon throttle valve V5 and an argon tower condensation evaporator are mounted in the rectification cold box. The device has the advantages that liquid argon can be conveniently provided by recycling the liquid argon in the field, and the liquid argon is used for providing cooling capacity; the mixed oxygen is removed by using hydrogen produced by water electrolysis hydrogen production, and nitrogen, carbon monoxide and excess hydrogen are removed by using the low-temperature rectification method, such that the greatest advantage is that a carbon monoxide removing device is omitted, the tolerance of raw material gas to the oxygen content is substantially improved, the argon gas recovery rate is improved, the low-temperature rectification process and operation are simplified, and the operation energy consumption is reduced.