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Metal hydride hydrogen-storing device and its preparation method

A hydrogen storage and hydride technology, which is applied in mechanical equipment, fixed-capacity gas storage tanks, gas/liquid distribution and storage, etc., can solve the problems of complex processing technology of honeycomb structure, reducing the specific capacity of hydrogen storage, and inconvenient use. , to achieve the effect of ensuring rapid hydrogen absorption and desorption performance, increasing volume specific capacity, and increasing weight specific capacity

Active Publication Date: 2011-09-14
张沛龙
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the commonly used diversion tubes for hydrogen storage are porous copper tubes, stainless steel tubes, and hollow cylindrical filters made of powder metallurgy. Hydrogen release speed; at the same time, these guide tubes are all solid structures, and the weight and space occupied are relatively large, which reduces the specific capacity of the hydrogen storage device
Moreover, these draft tubes are difficult to install, complicated in process, and high in production cost, especially inconvenient to use in small hydrogen storage devices.
[0004] Some hydrogen storage devices use a honeycomb structure to ensure the rapid hydrogen absorption and discharge performance of the hydrogen storage device, but the honeycomb structure takes up a lot of space in the hydrogen storage device, which greatly reduces the utilization rate of the internal space of the hydrogen storage device and reduces the The filling amount of hydrogen alloy affects the specific capacity of the hydrogen storage device; at the same time, the processing technology of the honeycomb structure is also relatively complicated

Method used

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  • Metal hydride hydrogen-storing device and its preparation method
  • Metal hydride hydrogen-storing device and its preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0017] Metal hydride hydrogen storage device, its internal structure and shape are: stainless steel cylinder, outer diameter Φ50mm, length 180mm. The mesh guide tube is made of aluminum, the diameter of the guide tube is 5mm, the length is 165mm, and the number is 1. The mesh guide tube is placed in the cylinder. Filling AB type TiFe hydrogen storage alloy powder. The gas valve is connected with the barrel through the connecting head, and the connecting head is equipped with a filter. Vacuumize the hydrogen storage device to 150Pa and fill it with hydrogen gas with a purity of 99.99% and a pressure of 2-4 MPa. The hydrogen storage alloy in the hydrogen storage device starts to absorb hydrogen and gradually converts into hydrides. The hydrogen alloy is completely converted into a metal hydride. After the first activation is completed, the hydrogen storage device can be put into use after 4 hydrogen charging and discharging operations. Test results: Compared with other types o...

Embodiment 2

[0019] The internal structure and shape of the metal hydride hydrogen storage device are: an aluminum alloy cylinder with an outer diameter of Φ120mm and a length of 480mm. The mesh guide tube is made of copper, the diameter of the guide tube is 10mm, the length is 455mm, and the number is 3. The mesh guide tube is evenly placed in the cylinder along the axis of the cylinder. Filling AB 5 Type mixed rare earth hydrogen storage material MmNi 4.5 Cr 0.5 alloy powder. The gas valve is connected with the barrel through the connection head, and the gas valve is equipped with a filter. The activation process is the same as in Example 1, and the number of activations is 3 times. Test results: Compared with other types of hydrogen storage, the reserved space of the hydrogen storage is reduced by 38%. After 1000 repeated hydrogen absorption and desorption operations at room temperature, the hydrogen storage device is intact, and the hydrogen storage capacity and hydrogen absorptio...

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Abstract

A hydrogen storage container of metal hydride is characterized in that reticular metal pipes are arranged in the hydrogen storage container to be used as hydrogen fluid guide pipes. Compared with the prior art, the hydrogen storage container has the outstanding advantages that 1), a structure of the reticular metal fluid guide pipes is employed, as the screen mesh structure is capable of providing a plurality of passages for hydrogen flowing and heat transfer, blocking is not easy to happen, thereby guaranteeing smooth gas flow, perfect heat transfer property and rapid hydrogen absorption performance of the hydrogen storage container, 2) the reticular metal fluid guide pipes are elastic, when hydrogen storage alloy absorbs hydrogen to expand and the alloy can shrink, therefore the structure can be employed to diminishes a reserved gag of the hydrogen storage container, the limited space of the hydrogen storage container can be sufficiently used, thereby increasing the load of the hydrogen storage alloy and increasing the volume ratio capacity of the hydrogen storage container, simultaneously the structure is light in weight, thereby the weight ratio capacity of the hydrogen storage container can be increased, and 3) the hydrogen storage container is simple in structure, convenient in installation, low in cost, perfect in performance, and stable, safe and reliable in long-term operation.

Description

technical field [0001] The invention relates to a hydrogen storage technology, in particular to a metal hydride hydrogen storage device. Background technique [0002] Hydrogen energy will become a clean and inexhaustible new energy source in the future, because hydrogen has a high fuel value, and when the same weight of coal, oil and hydrogen are burned, the energy released by hydrogen is three times that of oil and six times that of coal; the product of hydrogen combustion is water , has no pollution to the environment, and truly achieves zero emissions; hydrogen has a wide range of sources, can be regenerated and reused, so hydrogen energy, as an important secondary energy and clean energy, has attracted more and more attention. But hydrogen is a very low-density, reactive gas that is difficult to store. At present, there are three methods of hydrogen storage and transportation in practical application, namely, high-pressure containers (steel cylinders), liquid hydrogen s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F17C11/00
CPCY02E60/321Y02E60/32
Inventor 张沛龙
Owner 张沛龙
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