Metal hydride hydrogen storing device

Abstract

The invention provides a metal hydride hydrogen storing device, comprising a tank body, an air inlet and an air outlet above the tank body, a hydrogen distribution pipeline in the tank body and a filler area, wherein the air inlet and the air outlet are connected with a valve to control inputting and outputting of hydrogen; the hydrogen distribution pipeline is arranged inside the tank body; and the filler area is filled by means of coating hydrogen storage alloy powder by a certain thickness of a foam metal material or a foal metal phase change composite material in a cylindrical shape. The metal hydride hydrogen storing device has the advantages as follows: (1) the foam porous material provides a storage position for the hydrogen storage alloy powder, so as to effectively restrain flow accumulation of the alloy powder, buffer volume expansion of the hydrogen storage alloy powder and reduce pressure of a container; (2) a metal framework structure provides a good heat conducting channel for the hydrogen storage alloy powder, and the foal metal phase change composite material can buffer heat effects in hydrogen sucking and discharging of a hydrogen storage alloy, so that the heat utilization efficiency is improved; (3) a contact area of the hydrogen storage alloy powder and the hydrogen is larger and the hydrogen can rapidly and efficiently contact the alloy powder by using the hydrogen distribution pipeline, so that the rapid hydrogen sucking and discharging of the hydrogen storage device can be realized; and (4) the device has the characteristics of simple entire structure, light weight and low cost, can be used as a hydrogen storage device and further can be used as a hydrogen purifying device.

Description

technical field [0001] The invention relates to hydrogen storage and purification technology, which belongs to a solid-state hydrogen storage device, can be applied in the production of integrated circuits and semiconductors, powder metallurgy, refrigerators, etc., and can be used as a supporting high-purity hydrogen source for fuel cells, gas chromatographs, hydrogen atomic clocks, etc. . Background technique [0002] Hydrogen energy is considered to be an important secondary energy source in the 21st century. With the rapid development of hydrogen fuel cells, large-scale and economical production of hydrogen, safe and efficient storage and transportation (including the provision of on-board hydrogen fuel tanks, the establishment of hydrogen refueling stations and Hydrogen distribution, etc.) is an urgent problem to be solved. Today, the hydrogen storage and transportation methods used in industrial practice are mainly high-pressure containers, liquid hydrogen storage tank...

AI Technical Summary

Problems solved by technology

There are also certain problems with metal hydride hydrogen storage devices. For example, due to the poor thermal conductivity of metal hydride itself, the temperature of the hydrogen storage material rises sharply when hydrogen is absorbed, and the temperature drops sharply when hydrogen is released, resulting in slow hydrogen absorption and desorption; hydrogen storage During the hydrogen absorption and desorption process, the fine powder of the material will form excessive accumulation in a certain part of the hydrog

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