The invention discloses a device for preparing high-pressure
hydrogen by using
metal hydrides and belongs to the technical field of
static compression of
hydrogen. The device comprises a control part, a heating loop, a cooling loop, a reaction
bed, a circulation water pump and a
gas pipeline, wherein the heating loop and the cooling loop are wound around the outer wall of the reaction
bed at intervals and are connected to the circulation water pump respectively; the
gas pipeline is arranged in a reaction
bed body; the control part is connected to the
gas pipeline of the device. By virtue of the device, the
hydrogen is pressurized from 0.2MPa to 20MPa due to the adoption of AB2
type metal hydride such as Ti-Mn base and Ti-Cr base; the pressurization ratio reaches 100; the purity of the output gas reaches 99.999%; the accurate and continuous regulation of the
hydrogen output pressure can be implemented by temperature / pressure double alarm control manners of the
system, thereby ensuring that the device works under the safe temperature /
pressure range and ensuring the safety of the
system. The device also has the advantages that the structure is simple, the
noise is avoided, the vibration is also avoided, and low-quality
waste heat can be utilized.