JPS6229446Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a hydrogen storage alloy container.

Hydrogen is widely used in various industrial fields, and there is a need for efficient, safe, and easy storage and transportation of hydrogen. Traditionally, hydrogen has been stored and transported in containers as high-pressure hydrogen gas or liquid hydrogen, but because it requires a large amount of energy to achieve high pressure or ultra-low temperature, recently hydrogen storage alloys have been used. Attempts to use are being actively considered.

A hydrogen-absorbing alloy is an alloy that has the ability to absorb hydrogen _H2.There are various known hydrogen-absorbing alloys, but when they come into contact with pressurized hydrogen, they absorb hydrogen and become metal hydrides, which generate heat. When a metal hydride is depressurized and heated, it releases hydrogen and absorbs heat.
Note that when the hydrogen storage alloy is brought into contact with pressurized hydrogen, it absorbs hydrogen and becomes a metal hydride. Usually, to make a hydrogen storage alloy absorb hydrogen, it is sufficient to contact it with high-pressure hydrogen at room temperature, and to release hydrogen from a metal hydride, a heat medium such as hot water is passed between the metal hydrides.

By repeating hydrogen storage and release in the hydrogen storage alloy, the lumpy hydrogen storage alloy becomes finely powdered, and the hydrogen passage holes of the porous metal container placed in the container and housing the hydrogen storage alloy become clogged. The heat generated during occlusion causes the fine powder to solidify due to sintering,
This results in a decrease in reaction efficiency.

Therefore, in view of the above-mentioned circumstances, the present invention aims to prevent the hydrogen storage alloy from solidifying and increase the storage speed for practical use. This is an alloy that absorbs hydrogen by contacting it with hydrogen.

Hereinafter, the present invention will be described in detail based on embodiments shown in the accompanying drawings.

In the embodiment shown in FIG. 1, a reversing shaft 2 is provided at the center of the side wall of the container 1 to protrude outward. The container 1 is divided into two chambers: a conical hydrogen storage alloy storage chamber 3 on the upper side with respect to the inversion axis 2 and a conical empty chamber 4 on the lower side. The hydrogen storage alloy storage chamber 3 has a conical shape with a large diameter at the top and a small diameter at the bottom, and the empty chamber 4 has a conical shape with a small diameter at the top and a large diameter at the bottom, and the hydrogen storage alloy storage chamber 3 and the empty chamber 4 are respectively Join at the small diameter part. A hydrogen supply passage pipe 5 is provided protruding from the joint. In addition, a hydrogen storage alloy input/output port 6 is provided in the upper part of the hydrogen storage alloy storage chamber 3 and the lower part of the empty space 4, respectively.

When the hydrogen storage alloy A is accommodated in the hydrogen storage alloy storage chamber 3 and the hydrogen storage alloy storage chamber 3 is moved from being located below the empty chamber 4 to being positioned above by rotating the reversing shaft 2, this The hydrogen storage alloy A moves from the hydrogen storage alloy storage chamber 3 to the empty chamber 4 even during the inversion or after being positioned upward. During the movement of hydrogen storage alloy A, if a certain hydrogen storage alloy is selected, the weight will be 7 to 8 kg/cm ²
A certain amount of hydrogen is fed through the hydrogen supply passage pipe 5 to the junction between the hydrogen storage alloy storage chamber 3 and the empty chamber 4, and brought into contact with the hydrogen storage alloy A to cause the hydrogen storage alloy A to store hydrogen. It becomes a metal hydride. Note that it is better to supply hydrogen for a while after the hydrogen storage alloy A is moved. The hydride that has absorbed hydrogen and moved downward releases hydrogen by passing a heating medium such as hot water through a heating medium passage pipe (not shown) built into the container, and this hydrogen is passed through a passage pipe 5. Take it out and use it. The hydrogen storage alloy A that has released hydrogen rotates the reversing shaft 2 again to pass hydrogen through the hydrogen supply passage pipe 5, and in exactly the same manner as above, the hydrogen comes into contact with the moving hydrogen storage alloy A, and the hydrogen storage alloy A Stores hydrogen. In this way, hydrogen storage alloy A can be moved any number of times to store hydrogen.

Next, in the embodiment shown in FIGS. 2 and 3, the cylindrical container 1
A reversing shaft 2 is provided protruding outward from the center of the side wall. Two perforated plates 7 are placed horizontally in the middle part of the container 1 so as to divide it into two chambers, one above and one below with respect to the inversion axis 2, with the upper side being the hydrogen storage alloy storage chamber 3 and the lower side. Let be vacant room 4. Perforated plate 7 and perforated plate 7
Hydrogen storage alloy storage chamber 3 in the space formed by
A hydrogen supply passage pipe 5 is connected to the junction between the space 4 and the space 4.

Here, when the hydrogen storage alloy storage chamber 3, which accommodates the hydrogen storage alloy A and is located below, is moved upward by rotating the reversal shaft 2, the hydrogen storage alloy A moves from the hydrogen storage alloy storage chamber 3 to the empty chamber 4. During the movement of the hydrogen storage alloy A, hydrogen is fed into the junction between the hydrogen storage alloy storage chamber 3 and the empty space 4 through the hydrogen supply passage pipe 5, and is brought into contact with the hydrogen storage alloy A, so that hydrogen is stored in the hydrogen storage alloy A. The hydrogen storage alloy A becomes a metal hydride. The hydrogen storage alloy A that has moved downward rotates the reversing shaft 2 again and passes hydrogen through the hydrogen supply passage pipe 5, and the hydrogen storage alloy A that has moved downward is moved in exactly the same manner as above.
Hydrogen storage alloy A absorbs hydrogen upon contact with the hydrogen storage alloy A. In this way, hydrogen storage alloy A can be moved any number of times to store hydrogen.

The embodiment shown in FIGS. 4 and 5 is almost the same as that shown in FIGS. 2 and 3 above, except that the container 1 is rectangular and the perforated plate 7 is provided obliquely within the container 1. , everything else is exactly the same.

As mentioned above, the present invention has an inversion shaft protruding from the center of the side wall of the container, and divides the container into two chambers, the hydrogen storage alloy storage chamber above the inversion shaft and the empty chamber below. A hydrogen storage alloy container in which a hydrogen supply passage pipe is connected to the joint between the hydrogen storage alloy storage chamber and the empty chamber,
Since hydrogen is stored while moving the hydrogen storage alloy, it prevents the hydrogen storage alloy from solidifying, increases the contact area with hydrogen, increases the storage speed, and shortens the time required for storage, making it practical for use. Become. In this way, since hydrogen is stored during the movement of the hydrogen storage alloy, clogging of the perforated plate inside the container is eliminated. Further, hydrogen can be stored in the hydrogen storage alloy simply by inverting the container as described above and allowing hydrogen to flow in, making it extremely easy to store hydrogen. The present invention can be used not only as a container for transporting hydrogen-absorbing alloys, but also as a part of process equipment that stores hydrogen.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, FIG. 1 is a front view thereof, FIGS. 2 and 3 are other embodiments, FIG. 2 is a front view, FIG. 3 is a plan view of FIG. 2, and FIG.・Figure 5 shows yet another embodiment, where Figure 4 is a front view and Figure 5 is a front view.
FIG. DESCRIPTION OF SYMBOLS 1...Container, 2...Reversing shaft, 3...Hydrogen storage alloy storage chamber, 4...Empty room, 5...Hydrogen supply passage pipe.

Claims (1)

[Scope of utility model registration request] A reversing shaft is provided protruding from the center of the side wall of the container, and the container is divided into two chambers: a hydrogen storage alloy storage chamber above the reversal shaft and a vacant chamber below. A hydrogen storage alloy container characterized in that a hydrogen supply passage pipe is connected to the joint of the hydrogen storage alloy container.