Rare-earth permanent magnet hydrogen storage device for hydrogen demolishing and hydrogen cyclic utilization and system and method thereof

Abstract

The invention belongs to the technical field of rare-earth permanent magnet materials and relates to a rare-earth permanent magnet hydrogen storage device for hydrogen demolishing and hydrogen cyclic utilization and a system and method thereof. A rotary hydrogen storage tank body (10) of the device is made of a hydrogen storage alloy material. An output end (6) and an input end (7) which are symmetrical and communicate with each other are arranged on the rotary hydrogen storage tank body (10). The output end (6) and the input end (7) are each internally provided with a filter screen (1). A sealing rotating shaft (2) is arranged at the outer side of each filter screen (1), and the sealing rotating shafts (2) are mounted on a storage tank rotation driving mechanism. An exhaust opening (5) is formed in the output end (6). A spiral piece (9) is arranged inside the rotary hydrogen storage tank body (10). A heating device (3) and a cooling device (4) are arranged at the outer side of the rotary hydrogen storage tank body (10) in a manner that the heating device (3) and the cooling device (4) are close to but not in contact with each other. The rare-earth permanent magnet hydrogen storage device and the system and method thereof are reasonable in process flow and simple in equipment structure and have industrial application value and wide application prospect.

Description

Technical field [0001] The invention belongs to the technical field of rare earth permanent magnet materials, and relates to a hydrogen storage and release device for hydrogen destruction and hydrogen recycling, neodymium iron boron permanent magnets, cerium-rich or cerium permanent magnets, mixed rare earth permanent magnets, and dual (or multiple) main phases System and method for safe hydrogen destruction and efficient hydrogen recycling of rare earth permanent magnetic materials such as permanent magnets. Background technique [0002] In the production process of rare earth permanent magnet materials, in order to realize the high performance of sintered NdFeB magnets, the total amount of rare earths must be reduced. However, reducing the total amount of rare earths will increase the content of α-Fe phase, and the rapid-setting process must be used. The excellent performance of NdFeB quick-setting belt requires hydrogen crushing process. The hydrogen breaking process (HD proc...

AI Technical Summary

Problems solved by technology

And the air pump 8 of utility model patent (CN2040355689U) is at the bottom of the upright tank, and the vacuum pump 15 is at the bottom of the gas storage tank, and is not on the circulation circuit, that is to say, if the air pump 8 and the vacuum pump 15 are opened, although hydrogen can be broken into magnetic powder Further dehydrogenation, but the extracted hydrogen will not be able to enter the circuit, it will be extracted and discharged, and the hydrogen in the hydrogen crushed NdFeB magnetic powder cannot be recovered; if the air pump 8 and vacuum pump 15 are not turned on, the hydrogen crushed magnetic powder cannot be further Dehydrogenation, of course, cannot talk about the recovery of hydrogen, let alone the regeneration and recycling of tail hydrogen

In fact, the air pump 8 and the vacuum pump 15 of the utility model patent (CN2040355689U) only play the role of clearing the air in the upright tank and the air storage tank at the beginning of production, and can no longer be used in the future

It is precisely this structure that makes the utility model patent (CN2040355689U) only suitable for storage and release of pure hydrogen, not suitable for the hydrogen crushing process, because the large amount of hydrogen remaining in the hydrogen crushing powder cannot be recycled

Moreover, this utility model patent claims that it is only applicable to the hydrogen fragmentation of NdFeB permanent magnet materials, and is not applicable to the cerium-rich or cerium permanent magnets, mixed rare earth permanent magnets, double (or multiple) main phase permanent magnets involved in the present invention Hydrogen fragmentation of rare earth permanent magnet materials and recovery of dehydrogenated gas

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