205 results about "Hydrogen technologies" patented technology

The invention discloses a method for preparing macromolecule ultrathin membrane nano wrinkling patterns. The method comprises the following steps of: step one, adding a corresponding solvent into a polymer to prepare a 1-4wt% solution, then performing ultrasonic treatment to accelerate dissolution, and sealing a reagent bottle for later use after completely dissolving; step two, forming a membrane by using a spin-coating method with the prepared solution, and at last, standing for 24 hours so as to completely volatilize the solvent; step three, processing the spin-coated single-layer polymer membrane by using a hyperthermal-hydrogen technology to induce the upper layer of the polymer to crosslink; step four, performing thermal annealing treatment, and taking out a sample after annealing to freely cool at a room temperature so as to obtain a wrinkling pattern. According to the method, the hyperthermal-hydrogen technology is adopted for inducing crosslinking, the method is effective on most polymer systems, only the polymer systems need to contain C-H keys, so a method for ultrathin membrane wrinkling, which is widely applicable to the polymer systems, is provided, and the method ensures that the surface functional groups of a material are not damaged.

The invention relates to the technology of sulphur and iodine circulation hydrogen production, and particularly provides a hydrogen production method adopting electrochemistry to disintegrate HI in sulphur and iodine circulation hydrogen production and a device. The method includes the steps that a monocell is used as a reactor, the monocell has anode graphite electrode and cathode graphite electrode, and a proton exchange membrane is used as a diaphragm; HIx homogeneous solution in the sulphur and iodine circulation hydrogen production system is injected into the anode side, and deionized water is injected into the cathode side; power supply is turned on to carry out decomposition reaction, I- of the anode side HIx homogeneous solution is oxidized to I2, and generated H+ passes through proton exchange membrane to reach the cathode side and is reduced to hydrogen; HIx homogeneous solution of the anode side enters a Bunsen reactor to be Bunsen reaction raw material in a circulating modeafter electrolytic reaction, and hydrogen generated from cathode side is sent out. According to the hydrogen production method adopting electrochemistry to disintegrate HI in sulphur and iodine circulation hydrogen production, an HIx solution is directly decomposed adopting electrochemistry method, the original process of concentration and distillation is omitted, and the process and the device are greatly simplified. Hydrogen is generated from cathode, and the separation problem with HI gas does not need to be considered.

An austenitic steel for hydrogen technology has the following composition:

• • 0.01 to 0.4 percent by mass of carbon,
  • ≦5 percent by mass of silicon,
  • 0.3 to 30 percent by mass of manganese,
  • 10.5 to 30 percent by mass of chromium,
  • 4 to 12.5 percent by mass of nickel,
  • ≦3 percent by mass of molybdenum,
  • ≦0.2 percent by mass of nitrogen,
  • ≦5 percent by mass of aluminum,
  • ≦5 percent by mass of copper,
  • ≦5 percent by mass of tungsten,
  • ≦0.1 percent by mass of boron,
  • ≦3 percent by mass of cobalt,
  • ≦0.5 percent by mass of tantalum,
  • ≦2.0 percent by mass of at least one of the elements: niobium, titanium, vanadium, hafnium and zirconium,
  • ≦0.3 percent by mass of at least one of the elements: yttrium, scandium, lanthanum, cerium and neodymium, the remainder being iron and smelting-related steel companion elements.

The invention discloses a hydrogen power generation system capable of producing and storing hydrogen. Biomass resources are adopted as the raw materials, biomass thermochemical hydrogen production is utilized to decompose all agricultural straws into hydrogen-rich gas, and hydrogen in the hydrogen-rich gas is stored in an organic hydrogen storage material through an organic hydrogen storage device. The organic hydrogen storage material involved in the invention is composed of 2-methyl-[1, 8]-naphthyridine, diazafluorene and N-methylindole, has the characteristics of high hydrogen storage density and appropriate dehydrogenation temperature, the hydrogen released from the organic hydrogen storage device can be directly used for fuel cells, and hydrogen energy can be converted into electric energy or directly used for heat supply through hydrogen fuel cells, thus enhancing the economical efficiency of energy utilization. The power generation system provided by the invention is convenient and flexible, is suitable for establishment of a distributed energy system, and is applicable to energy development in areas away from the power grid and rich in biomass resources. The system combines biomass power generation technology with hydrogen technology, utilizes hydrogen energy as the biomass power generation intermediary, combines the high efficiency and flexibility of fuel cells, and realizes clean and efficient conversion of biomass to electricity.

The invention provides a combined cooling, heating and power composite system based on an ammonia energy ship. The combined cooling, heating and power composite system comprises a hydrogen productionsystem, a ship power supply system and a cooling, heating and heat exchange circulating system. The hydrogen production system comprises a marine liquid ammonia storage tank, a flow regulating valve bank, a gasifier, a pressure regulating valve bank, a drying filter, an ammonia preheater, an electric heater, an ammonia catalytic decomposition hydrogen separation unit, a hydrogen purifier, a hydrogen cooler and a hydrogen pressure flow control valve bank which are communicated in sequence; the ship power supply system comprises a hydrogen-air fuel cell, a motor propeller and a storage battery.The cooling, heating and heat exchange circulating system comprises a waste heat boiler and a secondary refrigerant pump; the waste heat boiler is used for generating saturated steam to meet the heatrequirements of ship auxiliary machines and passenger cabins. The secondary refrigerant pump is used for cooling the ship equipment and supplying related cooling capacity to the ship. The problem thata large amount of energy is consumed due to the fact that an existing hydrogen production-hydrogen storage technology cuts off the hydrogen production technology and the hydrogen storage technology is solved.

A corrosion-resistant, hot and cold formable and weldable steel for use in hydrogen-induced technology with high resistance to hydrogen embrittlement has the following composition: 0.01 to 0.4 percent by mass of carbon, ≦3.0 percent by mass of silicon, 0.3 to 30 percent by mass of manganese, 10.5 to 30 percent by mass of chromium, 4 to 12.5 percent by mass of nickel, ≦1.0 percent by mass of molybdenum, ≦0.2 percent by mass of nitrogen, 0.5 to 8.0 percent by mass of aluminum, ≦4.0 percent by mass of copper, ≦0.1 percent by mass of boron, ≦1.0 percent by mass of tungsten, ≦5.0 percent by mass of cobalt, ≦0.5 percent by mass of tantalum, ≦2.0 percent by mass of at least one of the elements: niobium, titanium, vanadium, hafnium and zirconium, ≦0.3 percent by mass of at least one of the elements: yttrium, scandium, lanthanum, cerium and neodymium, the remainder being iron and smelting-related steel companion elements.

The invention discloses a waste heat utilization system for hydrogen production by electrolytic water and a working method of the waste heat utilization system, and belongs to the technical field of hydrogen production by the electrolytic water. The waste heat utilization system comprises an electrolytic water system for the hydrogen production, a membrane distillation system, a heat user heatingsystem and a circulating cooling system. Waste heat generated in the process of the hydrogen production by the electrolytic water is used as a heat source in the membrane distillation process to prepare water supplement of the electrolytic water system for the hydrogen production, and the heating energy consumption in the membrane distillation process is saved. Compared with a traditional water preparation system, the energy consumption of water preparation of the membrane distillation system is low. Through the waste heat gradient utilization mode, waste heat still exists in circulating waterused for heating membrane distillation raw water, the waste heat can be used for winter heating for heat users such as electrolytic hydrogen production workshop or a container, the temperature requirement of the hydrogen production system in the space is met, and through the gradient utilization of the waste heat, the energy utilization efficiency of the whole electrolytic hydrogen production system is improved. The waste heat utilization system is reasonable in design, gradient and comprehensive utilization is carried out on the waste heat of the electrolytic water, the energy transferring efficiency is improved, and good application prospects are achieved.

The invention discloses a gas-electricity-hydrogen comprehensive energy resource supplying system and method. The gas-electricity-hydrogen comprehensive energy resource supplying system comprises an LNG storing and fuel supply system, an electricity supplying and storing system, an electrochemical reaction system, a heat exchanging system, an LNG filling system, a CNG filling system, a hydrogen filling system, a tail gas treating system and the like. According to the gas-electricity-hydrogen comprehensive energy resource supplying system disclosed by the invention, liquified natural gas is used as SOFC starting fuel, a stable electricity source and a stable heat source can be provided, the electricity source, the heat source, and on-site wind energy and light energy distribution type electricity generating equipment can form a coupling electric power system, and finally, hydrogen is produced through electrolyzing water with an SOEC; compared with a conventional single-energy electrolytic hydrogen technology, a technical line of relying on electricity generation by an SOFC to complement natural electric power fluctuation during electricity generation through wind energy and light energy, and maintaining reaction temperature through an electricity generation byproduct namely waste heat is provided, so that high-efficiency utilization of comprehensive energy resources is realized;and the gas-electricity-hydrogen comprehensive energy resource supplying system can realize the comprehensive supply of automobile energy resources of LNG, CNG, electricity and hydrogen, and is one of feasible construction modes of a future oil, gas electricity and hydrogen comprehensive power station.

The invention belongs to the technical field of thermochemical hydrogen production, and particularly relates to a thermochemical hydrogen production system based on microwave heating and a hydrogen production method and application thereof. A hydrogen production device is characterized in that an inlet of a preheater is communicated with a carrier gas storage device, a flow controller is arrangedbetween the preheater and the carrier gas storage device, an outlet of the preheater is respectively communicated with an inlet of the steam generator and one end of a second three-way valve through afirst three-way valve, the other two ports of the second three-way valve are respectively communicated with an outlet of a superheater and an inlet of the reactor, the reactor is arranged in a microwave generation device, an outlet of the steam generator is communicated with the outlet of the superheater through a pipeline, an outlet of the reactor, a condenser, a drying device and a collecting device are sequentially communicated, and a chromatographic instrument is arranged on the communicating pipeline between the drying device and the collecting device. The microwave pyrolysis of the metal oxide is short in heating time, low in power consumption and low in experiment cost, the repeated experiment period is shortened, and the effective energy utilization rate is greatly improved.

The invention provides a process for hydrogen production and co-production of LNG from raw gas with methanation, and belongs to the technical field of hydrogen production from raw gas. According to the process, raw gas obtained by pyrolysis of low-rank coal is used as a raw material, and high-purity hydrogen and LNG products are obtained through pretreatment, compression purification, conversion hydrogenation, desulfurization and decarburization, methanation, pressure swing adsorption and cryogenic separation. According to the invention, a tar and naphthalene multi-stage removal system is arranged in the process of hydrogen production and co-production of LNG from raw gas, and through optimal combination of all purification processes, impurities such as tar, naphthalene, ammonia and sulfur in the raw gas can be effectively removed under the condition that the impurities fluctuate in a relatively large range. According to the process, methanation is set, and the LNG productivity can be increased by 40%-60% under the condition of the same raw gas volume and hydrogen yield. Meanwhile, the concentration of methane in the raw gas is increased to 11-24% from about 6% through methanation, and is further concentrated to 24-60% through PSA, so that the amount of gas entering cryogenic separation is greatly reduced, and the investment and energy consumption of cryogenic separation are greatly reduced.

The invention relates to the technical field of automobile hydrogenation, in particular to a hydrogenation gun which comprises a valve body, a gas return connector and a gas inlet connector are formed in the valve body, a shell is arranged on the outer wall of the valve body, a handle is arranged on the valve body, and the handle drives a cam, a valve rod and a bearing to rotate by 180 degrees around the valve body. When the valve rod rotates, the three-way ball is indirectly driven to rotate by 180 degrees at the same time. The hydrogenation gun is used for being connected with a hydrogen fuel automobile steel cylinder, hydrogen is injected into the steel cylinder, and the hydrogen enters the hydrogenation gun from the gas inlet connector, enters the valve body through the valve clack and the three-way ball and then is injected into the automobile steel cylinder through the valve element. After filling is completed, residual hydrogen in the gun is controlled by the three-way ball to enter the gas return connector to be discharged; and the three-way ball body is controlled by a valve rod driven by the handle to rotate by 180 degrees, so that the switching of the connection between the steel cylinder and the air inlet interface and the connection between the steel cylinder and the air return interface is realized.

The invention relates to that technical field of photo-electrocatalytic hydrogen production, and discloses a sulfide-based photo-electric bifunctional catalytic hydrogen production composite materialand a preparation method thereof. The composite material comprises the following formula raw materials: nano MOS2 sheets, CD (CH3COO) 2.2H2O, thiourea, carbon nanotubes and Ni-doped Co9S8. According to the sulfide-based photo-electric bifunctional catalytic hydrogen-production composite material and the preparation method thereof, Ni doping enhance the conductivity of Co9S8, accelerates the transmission and diffusion process of electrons. The Ni-doped Co9S8 is coated by the carbon nanotubes; the side reaction between Co9S8 and an electrolyte is avoided; holes generated by CdS under optical radiation enter the valence band of MoS2; the recombination efficiency of photo-induced electrons and holes of CdS is reduced; the nano MoS2 has a good carrier mobility to inhibit the recombination of CdS photon-generated carriers; according to the preparation method disclosed by the invention, the electrocatalyst Ni-doped Co9S8 with is tightly coated by the carboxylated carbon nano tubes, and meanwhile, the photocatalyst CdS-MoS2 heterojunction is uniformly attached, so that the dual functionalization of photolysis-electrolysis of water to produce hydrogen of the composite material is realized.

The invention relates to the technical field of clean energy and water electrolysis hydrogen production, in particular to a water electrolysis hydrogen production system, which comprises a hydroelectric generation system, an electric power storage system, a water electrolysis hydrogen production system, a hydrogen purification system and a hydrogen storage system, wherein the lower side of the hydroelectric generation system is provided with the electric power storage system; the water electrolysis hydrogen production system is arranged on one side of the hydroelectric generation system, the hydrogen purification system is arranged at one end of the water electrolysis hydrogen production system, and the hydrogen storage system is arranged at one end of the hydrogen purification system. Inthe invention, by arranging the hydroelectric generation system, the hydrogen storage system, the water electrolysis hydrogen production system and the hydrogen purification system, waste water is used for power generation, energy waste is avoided, the electricity price is low, on-site hydrogen production is achieved, and energy storage is facilitated.

The invention belongs to the technical field of hydrogenation of hydrogen refueling station, and discloses a liquid hydrogen and high-pressure gaseous hydrogen combined hydrogen refueling system basedon ejection mixed pressure. The system comprises a high-pressure hydrogen storage tank (1), a liquid hydrogen tank (3), a compressor (2), a liquid hydrogen pump (4), a heat exchanger (5) and an ejector (6), wherein the heat exchanger is used for heat exchange treatment to enable high-pressure gaseous hydrogen to release heat so as to obtain gaseous first hydrogen and enable liquid hydrogen to absorb heat so as to obtain gaseous second hydrogen; and the ejector is used for mixing the first hydrogen and the second hydrogen to obtain mixed hydrogen. According to the system, by improving the composition of all components in the system and the matching working mode of the components, high-pressure hydrogen and low-pressure hydrogen are obtained through heat exchange and precooling of the high-pressure gaseous hydrogen and the liquid hydrogen respectively, and mixed pressure of the high-pressure hydrogen and the low-pressure hydrogen is achieved through the ejector; a traditional precoolingunit is saved while the reliability is guaranteed, so that investment, operation and maintenance cost of pre-cooling equipment of the hydrogen refueling station is reduced; and the system is suitablefor the large hydrogen refueling stations for liquid hydrogen and gas hydrogen combined storage.

The invention discloses a chain reaction hydrogen production system and a hydrogen production method, and the system comprises a reduction reaction device, a first separation device, a hydrogen production reaction device, a second separation device, a first heat transfer device and a cooling purification device. The invention starts from the chain combustion reaction mechanism, MeO/Me circularly flows between the hydrogen production reaction device and the reduction reaction device to respectively generate reduction/oxidation chemical reaction, and the traditional carbon-based solid fuel is converted into high-purity clean hydrogen energy. According to the method, the system is used for preparing hydrogen. Compared with the traditional water gas shift synthesis gas hydrogen production technology, the water consumption, the energy consumption and the environmental pollution of the hydrogen production process can be reduced; renewable energy sources such as solar energy can be utilized,traditional carbon-based fuel is converted into clean hydrogen energy, and the efficient capture and storage of CO2 gas are achieved; the metal oxide can be recycled through a chain reaction, and thelow-cost, sustainable and stable production of hydrogen is achieved.

The invention belongs to the technical field of electrocatalytic hydrogen production, and discloses a MoS2/MoO2/Ru composite material as well as a preparation method and application thereof. The method comprises: adding nano MoS2 into water, ultrasonically dispersing uniformly under an ice bath condition, and then putting the ultrasonically dispersed mixed solution into a cell disruptor for ultrasonic treatment for at least 30 minutes; sequentially adding water-soluble Ru salt and H2O2 with the concentration of 4-6 wt% into the obtained mixed solution, uniformly stirring, controlling the temperature to be 80-95 DEG C, reacting for 4-6 hours, centrifuging, washing and drying to obtain a MoS2/RuO2 composite material; and fully and uniformly grinding the prepared MoS2/RuO2 composite material,calcining the MoS2/RuO2 composite material for 3-6 hours at 400-800 DEG C in N2 gas or inert atmosphere, and naturally cooling to room temperature to obtain the MoS2/MoO2/Ru composite material. The disclosed composite material is used as a catalyst for an electrocatalytic hydrogen evolution reaction. The MoS2/MoO2/Ru composite material prepared by the method disclosed by the invention has uniformmorphology and excellent electrocatalytic performance, and meanwhile, in the preparation process, the reaction conditions are simple, the operation is easy, the yield is high, and the industrial production is easy.

The invention provides a multilayer selective hydrogen permeation composite membrane, and belongs to the technical field of hydrogen permeation. The composite membrane comprises a metal base material layer with high hydrogen permeability, a metal layer with catalytic activity and permeability to hydrogen and a single-layer graphene film with selective permeability to proton hydrogen, wherein the metal base material layer is made of niobium or a metal alloy composed of niobium and other metal elements, and the metal layer is made of palladium or a metal alloy composed of palladium and other elements. The invention also provides a preparation method of the multilayer selective hydrogen permeation composite membrane. According to the multilayer selective hydrogen permeation composite membrane, high-temperature mutual diffusion of metal atoms in the metal layer and metal atoms in a metal substrate layer can be effectively prevented, meanwhile, the hydrogen permeation rate of the composite membrane is not affected, and the service life of the composite membrane can be prolonged. The multilayer selective hydrogen permeation composite membrane material is particularly suitable for separating hydrogen from a gas mixture through selective diffusion.

The invention discloses an industrial crude hydrogen purification and hydrogen storage and release system and method for an organic liquid hydrogen storage medium, and belongs to the technical field of organic liquid hydrogen storage. The system comprises a gas compression device, an organic liquid hydrogen storage medium hydrogenation device, an organic liquid hydrogen storage medium storage tank, a hydrogen-rich hydrogen storage medium dehydrogenation device and a hydrogen-rich hydrogen storage medium storage tank. The method comprises the steps of firstly, introducing an industrial crude hydrogen source into the gas compression device to compress the industrial crude hydrogen source, then introducing the compressed crude hydrogen source into the organic liquid hydrogen storage medium hydrogenation device to carry out catalytic hydrogenation, feeding a material subjected to catalytic hydrogenation into the hydrogen-rich hydrogen storage medium storage tank, feeding the material in the hydrogen-rich hydrogen storage medium storage tank into the hydrogen-rich hydrogen storage medium dehydrogenation device for dehydrogenation, and finally, discharging high-purity hydrogen from one outlet after passing through the hydrogen-rich hydrogen storage medium dehydrogenation device. Additional gas purification equipment is not needed, the purification problem of an impurity-containing industrial crude hydrogen source is solved, and high-purity hydrogen meeting the use standard can be output.

The invention discloses a step-by-step dehydration method of a wood tar hydrogenation combined device in the technical field of wood tar hydrogenation. The method comprises the following steps: (1) the wood tar raw material of the wood tar hydrodeoxygenation device first passes through a deep dehydration unit; (2) The reaction product of the BDO unit enters the modified BDO cold high-pressure separator for preliminary dehydration treatment; (3) The reaction product of the OTM unit enters the modified OTM cold high-pressure separator for preliminary dehydration treatment; (4) Naphtha and light diesel oil The product is finally processed by a deep dehydration device before leaving the factory. Using the technological process proposed by the method, the raw materials, intermediate products and final products of the wood tar hydrogenation complex are dehydrated step by step. After the step-by-step dehydration treatment process, the energy consumption of the combined wood tar hydrogenation unit has been greatly reduced, the product quality has been greatly improved, the stable operation time of the unit has been greatly increased, and the economic benefits of the entire unit have been improved.

The invention relates to the technical field of hydrogen storage and release of magnesium-based hydrogen storage materials, and in particular relates to a magnesium-based solid hydrogen storage material performance testing system which comprises a heat exchange component, a temperature adjusting part, a circulating component, a first flow adjusting component and a parameter detecting part. A storage cavity provided with a hydrogen storage material is formed in the heat exchange component, the inlet end of the storage cavity is used for being connected with a hydrogen source, and the outlet endof the storage cavity is used for being connected with to-be-filled hydrogen equipment; a circulation channel spaced from the storage cavity is formed in the heat exchange component, a circulation loop is formed by the circulation channel and the temperature adjusting part, and the circulation component is arranged on the circulation loop, so that a heat-conducting medium circulates; the first flow adjusting component is used for adjusting the air inlet flow and the flow speed of the heat exchange component; the parameter detecting part is used for detecting the optimal hydrogen charging anddischarging parameters of the hydrogen storage material. The system can test the hydrogen charging process and the hydrogen discharging process of the hydrogen storage material and obtain the optimalhydrogen charging and discharging parameters.

The invention relates to a fuel cell emergency power generation system based on a solid hydrogen storage technology. The fuel cell emergency power generation system comprises a fuel cell, a first hydrogen storage device, a second hydrogen storage device and a hydrogen supply channel, wherein the fuel cell can supply power to the system and other external equipment; the first hydrogen storage device can release hydrogen at a relatively low temperature, and generally, the environment temperature is minus 15 DEG C; the second hydrogen storage device can release hydrogen at normal temperature, and generally, the environment temperature is 25 DEG C; and the hydrogen supply channel can convey hydrogen released by the first hydrogen storage device and the second hydrogen storage device to the fuel cell. By switching the hydrogen supply modes of the first hydrogen storage device and the second hydrogen storage device, hydrogen can be supplied to the fuel cell under the conditions of lower temperature and normal temperature, so that the fuel cell can respond to the power demand at any time at different temperatures and immediately enter a working state, and the problems that a certain time needs to be consumed in the heating process of an existing solid hydrogen storage device, and the device is difficult to guarantee hydrogen supply to the fuel cell rapidly are solved.

The embodiments of the invention disclose a heat treatment device and a wafer treatment method thereof. The heat treatment device comprises a furnace body, a furnace pipe, and a gas treatment unit. The furnace pipe is horizontally arranged inside the furnace body. The mouth of the furnace pipe is equipped with a removable sealing cover, and is used as an inlet via which a wafer is put in. The tail of the furnace pipe is used as a gas transmission port for receiving hydrogen input by an external inflatable device. An exhaust pipe is arranged at a side of the furnace pipe. The gas treatment unit is connected with the exhaust pipe of the furnace pipe, and is used for treating excess gas in the furnace pipe transmitted to the exhaust pipe and discharging the excess gas out of the furnace body. By using the furnace pipe structure and the gas treatment unit of the heat treatment device together, the safety in the process of hydrogen treatment is ensured. The heat treatment device uses a pure hydrogen technology instead of the existing nitrogen technology. The surface state of wafers is improved. The leakage current on the surface of a wafer is reduced. The electrical properties and stability of wafers are improved.

The invention discloses a solar high-temperature electrolyzed water coupling hydrogen production system and process based on amino thermal chemical energy storage, and belongs to the technical field of solar photo-thermal electrolyzed water hydrogen production. The system integrates an amino thermochemical energy storage unit, a recompression S-CO2 Brayton cycle unit and a high-temperature water electrolysis hydrogen production unit, all the units are connected and synergistically acted through a plurality of heat exchangers, the amino thermochemical energy storage unit absorbs the temperature of solar decomposition and heat energy release by ammonia synthesis, and on the basis, the deep waste heat recovery method of the system is provided for waste heat caused by various energy transfer processes in the integrated solar hydrogen production system, the collaborative optimization and complementation process of solar energy and chemical energy is achieved, the target energy utilization rate can reach 27%, a brand new path is provided for solar hydrogen production, and the system has great significance in solar energy utilization and storage.