127 results about "Metallic hydrogen" patented technology

A new method of creating thin free-standing pin hole-free hydrogen-selective palladium-bearing membranes that comprises thinning cold-rolled membranes by chemical etching or electrochemically electrolyzing of at least one membrane surface, and novel membranes produced thereby and including membranes with selected portions only thereof so thinned.

The invention relates to a device and method for researching the metallic hydrogen permeation behavior, in particular to a device and method for researching the hydrogen permeation behavior of metal subjected to dead-load pulling stress in a gaseous medium, and the device and method are used for researching the interactive influence of pulling stress and a gaseous environment on the metallic hydrogen permeation behavior. The device comprises a heating device, a stretching device, an electrolytic bath and a liquid/gas storage bottle. The method comprises the steps of: nickel-plating a single side of a test piece to be tested, and fixing the test piece between a lower opening of an anode pool and an upper opening of an environmental pool, wherein the nickel-plated layer of the test piece faces the environmental pool; and providing dead-load pulling stress for the test piece by the stretching device. An experimental medium in the anode pool is a NaOH solution. An experimental solution inthe environmental pool forms a gaseous medium environment under the action of water bath. The device and method provided by the invention can be used for researching the hydrogen permeation behavior of a metallic material subjected to dead-load pulling stress in the gaseous medium, the control of the magnitude of the pulling stress and the environment and atmosphere can be realized, and the deficiency that the influence of a stressed state and the gaseous environment on the metallic hydrogen permeation behavior cannot be measured through the traditional electrolytic bath is made up.

A method for the production and storage of hydrogen. The hydrogen is produced via electrolysis and as the hydrogen is formed it is absorbed into a hydrogen storing cathode. Once the hydrogen storing cathode has become completely hydrided, it is shipped to end users as a metal hydride supply of hydrogen.

The invention relates to a device and a method for research on hydrogen permeation of metal, in particular to a device and a method for research on hydrogen permeation of metal in acidic atmospheric medium with an adjustable pH value. The device comprises an environmental tank, an anode tank and a liquid storage bottle. A specimen to be tested is fixed at an opening at the bottom of the anode tank, and electrolyte in the anode tank adopts NaOH solution. Acidic solution in the environmental tank can form an acidic atmospheric medium environment under a water bath. Three electrodes are connected with corresponding ports of an electrochemical working system through wires. By adopting the device and the method, the hydrogen permeation current of metal materials in the acidic atmospheric medium can be measured, gas-phase components can be controlled, and the relevant defects of the conventional double electrolytic tanks for electrochemical hydrogen permeation can be overcome.

The invention discloses a rotary kiln and a poly-generation system utilizing the rotary kiln for producing metal hydride. The poly-generation system comprises a lime production sub-system, a pulverized coal production sub-system, a calcium carbide production sub-system, a magnesium metal production sub-system, a waste heat utilizing and gas recycling sub-system, a metal hydrogen storage sub-system and a cement clinker production subsystem. Limestone, magnesite/dolomite, quartz sand and coal serve as raw materials, and the limestone is roasted into lime; in a lime kiln built through zirconia bricks, the lime and the coke powder are subjected to the high-temperature reaction so that liquid calcium carbide can be obtained; the magnesite/dolomite is roasted into magnesium oxide, and the calcium carbide, the magnesium oxide and the quartz sand are mixed to generate magnesium; high-concentration carbon dioxide, coal pyrolysis gas and calcium carbide tail gas obtained through decomposing of the limestone and the magnesite are recycled and processed, and hydrogen and food-level carbon dioxide are obtained; magnesium hydride is generated through union of hydrogen and magnesium; and carbide slag and magnesium slag are processed, and cement clinker and carbon powder are obtained. According to the poly-generation system, emission of solid waste is avoided, and carbon emission is greatly reduced.

The invention relates to a method and device for preparing hydrogen with wind and light and refining heavy water. And it comprises the five parts of: 1. solar power generating part; 2. wind power generating part; 3. hydrogen and oxygen producing part by electrolysis; 4. common hydrogen storage part; and 5. high pressure ultrapure making part, where the first part comprises: heat collector set composed of solar heat collecting plates, heat collecting loop, circulating pump, heat exchanger, steam loop, turbine engine, power generator, and cooler; the second part comprises vertical shaft, speed change gear, arm of force, active throttle, ground gear, railway, electrobath, steam-water separator, cooling drying gas, circulating pump, motor, water supply tank, heavy water collecting tank, heavy water outlet pipe, hydrogen gas outlet, and oxygen gas outlet; the fourth part comprises steel case, oxygen gas outlet, hydrogen gas outlet, active pressure plate, rubber hydrogen storage soft gallbladder, rubber hydrogen storage soft gallbladder, valve, hydrogen gas inlet and oxygen gas inlet; and the fifth part comprises catalytic deoxidation drying purifiers, metal oxide terminal purifying compressors, product storage steel cylinders and the connecting pipeline, and valves. By a 140KW standard, the invention can per hour produce high pressure ultrapure hydrogen 101.2kg; oxygen gas 896kg; refines heavy water 0.15kg; consumes water 2000kg; has efficiency 90%; pressure 13-15MPa; and purity able to be up to 99.9999%.

The process of preparing AB3.5 type hydrogen-storing negative pole material includes: setting the material inside crucible in a vacuum inducing furnace, vacuuming before introducing Ar in the pressure of 0.2-3 atm, smelting and casting. There is one pipe with one end stretched over the crucible inside the furnace and the other end connected to the vacuum pump outside the furnace, and one valve connected to the pipe outside the furnace to control vacuuming rate, so that the Mg vapor may be pumped out from the furnace. The cast ingot is homogenizing treated in a vacuum heat treating furnace at 850-1020 deg.c for 6-15 hr before being cooled inside the furnace to room temperature. The AB3.5 type hydrogen-storing negative pole material is used in metal hydride-nickel cell.

The invention discloses a determination device for metallic hydrogen diffusion current. The determination device comprises a cathode chamber, an anode chamber and a CS double constant potential workstation, wherein the cathode chamber and the anode chamber are communicated with each other; a hole provided with a drain valve is formed in the lower part of one side of each of the cathode chamber and the anode chamber; a beak bent-tube stretching from the anode chamber to a communicating channel is mounted at the top opening of the anode chamber through a tightened rubber plug, a saturated calomel reference electrode is mounted in the beak bent-tube through a rubber plug, and an auxiliary electrode II connected with a conducting wire is also arranged in the anode chamber and positioned near to one side of the beak bent-tube; an auxiliary electrode I connected with the conducting wire is also arranged in the cathode chamber; a sample connected with the conducting wire is clamped between the connecting end faces of the communicating channel through sealed rubber rings; the auxiliary electrode I, the sample, the saturated calomel reference electrode and the auxiliary electrode II are connected to related interfaces in the CS double constant potential workstation through the conducting wires. The determination device has the advantages that the good accuracy is realized, the operation is convenient, the measuring results are stable and reliable and the usage and maintenance cost is low.

The invention discloses a device for preparing high-pressure hydrogen by using metal hydrides and belongs to the technical field of static compression of hydrogen. The device comprises a control part, a heating loop, a cooling loop, a reaction bed, a circulation water pump and a gas pipeline, wherein the heating loop and the cooling loop are wound around the outer wall of the reaction bed at intervals and are connected to the circulation water pump respectively; the gas pipeline is arranged in a reaction bed body; the control part is connected to the gas pipeline of the device. By virtue of the device, the hydrogen is pressurized from 0.2MPa to 20MPa due to the adoption of AB2 type metal hydride such as Ti-Mn base and Ti-Cr base; the pressurization ratio reaches 100; the purity of the output gas reaches 99.999%; the accurate and continuous regulation of the hydrogen output pressure can be implemented by temperature/pressure double alarm control manners of the system, thereby ensuring that the device works under the safe temperature/pressure range and ensuring the safety of the system. The device also has the advantages that the structure is simple, the noise is avoided, the vibration is also avoided, and low-quality waste heat can be utilized.

The invention provides a hydrogen purification device. The hydrogen purification device comprises at least two metal hydride reactors and a flow and pressure control system, wherein the at least two metal hydride reactors are filled with hydrogen storage alloys, inlets and outlets are controlled through valves, the inlet ends are connected with a hydrogen source with lower purity, purified hydrogen with higher purity is released from the outlet ends, and the outlet ends are connected to hydrogen utilization equipment through the flow and pressure control system. By means of the hydrogen purification device, hydrogen can be continuously purified, hydrogen with higher purity is output ceaselessly, the output flow and pressure are controlled, and the device is convenient to operate and runs stably.

The invention relates to a manufacturing method of a metal-hydride hydrogen storage tank. The method includes the steps of machining of a tank body, machining of a flange cover, machining of foam copper elements, preparation of hydrogen storage alloy powder and assembly line assembling and production of the hydrogen storage tank. The hydrogen storage tank comprises parts including a round foam copper cover, a mat type copper net, a clamping sleeve type ball valve, an air pipe, a UJR joint, the flange cover, bolts, an O-shaped sealing ring, cooling fins, the tank body, the hydrogen storage alloy powder, a foam copper drum, a foam copper disk, a copper-water heating pipe, a foam copper cylinder and the like. The manufacturing method is high in production efficiency, high in yield and low inmanufacturing cost, the metal-hydride hydrogen storage tank manufactured with the method is simple in structure, high in space utilization rate, large in hydrogen storage amount, good in sealing performance, excellent in heat and mass transfer performance, high in hydrogen absorption and release speed and good in long-time use safety, breakage of the tank body due to hydrogen absorption expansionof a hydrogen storage material can be avoided, no cooling media are required to be introduced, repeated recycling can be realized, and the use cost is low.

A method of degrading organic pollutants includes adding peroxides into water containing organic pollutants, wherein the molar ratio of the peroxides to the organic pollutants is 10:1 to 100:1; addinga catalyst while stirring, wherein the catalyst is a copper-bearing layered metallic hydrogen oxide, and the addition of the catalyst is 0.02-0.5 g L<-1>. The method allows peroxides to be effectively catalyzed, can degrade organic pollutants efficiently and enables little Cu2+ to be dissolved out during reaction.

The invention relates to a hydrogen compressor (10) with metal hydride comprising: a pressure chamber (20), comprising an inner space, defined by a first inner surface (21); a shell (70) with a thickness E, the shell (70) comprising a first outer surface (71) facing the first inner surface (21), the shell (70) comprising an insulating material with first thermal conductivity; and a hydrogen storage element (50), contained in the shell (70), comprising a storage material suitable for storing or releasing hydrogen as a function of a temperature that is imposed on same, and having a second thermal conductivity higher than the first thermal conductivity.

The invention discloses a metal hydride based annular fin type efficient heat storage reactor which comprises a reactor shell and a heat exchanging fluid pipe, wherein a gas hole allowing hydrogen toenter and exit and a safety valve port are formed in the upper end of the reactor shell; the heat exchanging fluid pipe penetrates to the upper end of the reactor shell from the lower end of the reactor shell; the upper end lower ends of the heat exchanging fluid pipe extend into the external part of the reactor shell; a plurality of annular fin structures are mounted on the part, in the reactor shell, of the heat exchanging fluid pipe at intervals in the axial direction; the diameters of the annular fins are sequentially reduced from top to bottom; a metal hydride powder bed is filled in thereactor shell; and the heat exchanging fluid pipe is connected with the reactor shell in a sealing manner. The metal hydride based annular fin type efficient heat storage reactor solves the problems that during the heat releasing process, the traditional shell-and-tube metal hydride heat storage reactor is lower in output temperature and poorer in heat exchanging performance.

RD-27,98216A method for reducing in situ the electrochemical corrosion potential and susceptibility to stress corrosion cracking of a nickel-base alloy and boiling water nuclear reactor components formed therefrom when in contact with high temperature water. The method comprises the steps of: adding a metal hydride to the high temperature water; dissociating the metal hydride in the high temperature water to form a metal and at least one hydrogen ion; and reducing the concentration of the oxidizing species by reacting the hydrogen ions with an oxidizing species, thereby reducing in situ the electrochemical corrosion potential of the nickel-base alloy. The method may further include the steps of reacting the metal with oxygen present in the high temperature water to form an insoluble oxide and incorporating the metal into the surface of the nickel-base alloy, thereby reducing the electrical conductivity of the surface of the nickel-base alloy. A nickel-base alloy component having a reduced electrochemical corrosion potential is also disclosed.

The invention discloses a fuel cell power system of a long-endurance industrial vehicle. The fuel cell power system comprises a control module, a fuel cell module, a hydrogen storage module used for providing hydrogen for the fuel cell module, an electrical module used for converting output voltage of the fuel cell module and an energy storage module used for storing electric energy generated by the fuel cell module, wherein the electrical module is also used for converting the output voltage of the energy storage module; the hydrogen storage module comprises a hydrogen filling device, a metalhydrogen storage device and a pressure adjusting device, the metal hydrogen storage device is an array device composed of metal hydride hydrogen storage containers, and the metal hydride is an alloyformed by bonding hydrogen and metal under the pressure of 3-6MPa. The hydrogen storage module provided by the invention occupies a small space of an industrial vehicle, can realize the functions of hydrogen storage and industrial vehicle counterweight at the same time, and does not need additional pressurizing equipment during hydrogen filling. In addition, the invention further discloses a long-endurance industrial vehicle.

The invention provides a short-process preparation method for rapidly activating a hydrogen storage alloy by utilizing a hydrogen-containing compound, and relates to the field of hydrogen storage materials. The method comprises the following steps: putting a hydrogen storage alloy material and an active additive into a container, and uniformly mixing in a reaction atmosphere to obtain an activatedhydrogen storage alloy material, wherein the hydrogen storage alloy material is selected from one or more of rare earth ABX type hydrogen storage alloy powder, ferrotitanium AB type hydrogen storagealloy powder, titanium zirconium AB2 type hydrogen storage alloy powder, magnesium A2B type hydrogen storage alloy powder and titanium vanadium solid solution type hydrogen storage alloy powder, and the active additive is metal hydride. The hydrogen storage material prepared by the method not only completes the activation process, but also can absorb and desorb hydrogen without high-temperature orhigh-pressure activation process so that the production efficiency is improved, the production cost is reduced, and meanwhile, the original hydrogen storage capacity is maintained; the method is simple, quick and efficient, is particularly suitable for the activation process of the solid hydrogen storage material for the low-pressure hydrogen refueling station, and has important practical value for applying the hydrogen storage alloy material to hydrogen energy engineering.

Laves phase-related BCC metal hydride alloys historically have limited electrochemical capabilities. Provided are processes of activating these alloys to produce hydrogen storage materials with greater than 200 mAh/g capacities and commonly much greater than 300 mAh/g capacities. The processes include cooling the alloy during hydrogenation to reduced temperatures or by subjecting the materials to significantly increased hydrogen pressures. Temperatures in many embodiments do not exceed 300° C. By decreasing the temperature or increasing the hydrogen pressure the phase structure of the material is optimized to increase a synergistic effect between multiple phases in the resulting alloy thereby greatly improving the electrochemical capacities.

The invention provides a hydrogen-storing alloy used for metal-hydride and high-pressure combined hydrogen storage. The alloy has a chemical formula as Ti<x>Cr<y>Fe<z>Mn<2>-y-zB<0.01>, wherein x is not smaller than 1.01 and not larger than 1.08, y is not smaller than 1 and not larger than 1.4, z is not smaller than 0.5 and not larger than 0.7, and the sum of y and z is smaller than 2. The pressure of the 318 K hydrogen-discharging platform of the hydrogen-storing alloy is over 35 MPa, hydrogen-discharging enthalpy change value is lower than 20 kJ/mol H2, and the hydrogen storage capacity is larger than 1.6 wt%. The hydrogen-storing alloy is capable of being activated when absorbing hydrogen for the first time, has the advantages of high hydrogen-discharging platform pressure, low thermal enthalpy value, higher hydrogen storage capacity and easy activation, and is especially suitable for being used as hydrogen storage materials of metal-hydride and high-pressure combined hydrogen storage devices.

The invention relates to a metal hydride hydrogen energy work-doing system comprising a protective cover, a B1 metal hydrogen storage material reaction bed, a B2 metal hydrogen storage material reaction bed, a heat exchanger, a water cooler, a hydrogen expansion machine and a liquid hydrogen high-pressure pump, wherein the B1 metal hydrogen storage material reaction bed, the B2 metal hydrogen storage material reaction bed, the heat exchanger, the water cooler, the hydrogen expansion machine and the liquid hydrogen high-pressure pump are arranged in the protective cover. The B1 metal hydrogen storage material reaction bed and the B2 metal hydrogen storage material reaction bed are connected with the hydrogen expansion machine through the shell pass of the water cooler, and materials returnto the B1 metal hydrogen storage material reaction bed and the B2 metal hydrogen storage material reaction bed through a tube pass of the heat exchanger. The metal hydride hydrogen energy work-doing system utilizes the hydrogen absorption/hydrogen desorption features of the metal hydrides to drive the expansion machine to do work.