Metal hydride hydrogen-storing device and its preparation method

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...

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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

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