Patent ID: 11873221
Assignee: XI'AN JIAOTONG UNIVERSITY
Field: Materials, metallurgy (Chemistry)
Classification: CPC C  Y | IPC C

Claim 6:
7. A method for integrated hydrogen purification, storage and pressurization by using the integrated system of claim 1, comprising:
under an action of the adjustable cold and heat source, desorbing primarily-pressurized hydrogen stored in a metal hydride in the first low-pressure metal hydride reactor or the second low-pressure metal hydride reactor; feeding desorbed hydrogen into the medium-pressure metal hydride reactor to undergo hydrogen absorption reaction under the action of the adjustable cold and heat source; storing an unreacted part of the desorbed hydrogen in the hydrogen storage tank; according to a downstream hydrogen demand, setting a reaction temperature of the medium-pressure metal hydride reactor, and under the action of the adjustable cold and heat source, performing hydrogen desorption reaction to enable hydrogen compression and output secondarily-pressurized hydrogen, wherein a pressure of the secondarily-pressurized hydrogen is higher than that of the primarily-pressurized hydrogen;
desorbing hydrogen stored in the medium-pressure metal hydride reactor under the action of the adjustable cold and heat source to generate the secondarily-pressurized hydrogen; feeding the secondarily-pressurized hydrogen to the high-pressure metal hydride reactor followed by hydrogen absorption reaction under the action of the adjustable cold and heat source, wherein an unreacted part of the secondarily-pressurized hydrogen is stored in the hydrogen storage tank; according to a downstream hydrogen demand, setting a reaction temperature of the high-pressure metal hydride reactor, and under the action of the adjustable cold and heat source, performing hydrogen desorbing reaction in the high-pressure metal hydride reactor to output tertiarily-pressurized hydrogen, wherein a pressure of the tertiarily-pressurized hydrogen is higher than that of the secondarily-pressurized hydrogen; and
allowing hydrogen to enter the first low-pressure metal hydride reactor; under the action of the adjustable cold and heat source, heating a hydrogen storage alloy or pure metal through the first heat exchanger to perform hydrogen absorption reaction to store hydrogen; under the action of the adjustable cold and heat source, subjecting the metal hydride in the second low-pressure metal hydride reactor to hydrogen desorption reaction; feeding desorbed hydrogen to the first low-pressure metal hydride reactor through the hydrogen storage tank to complete hydrogen purification and storage.