Low-temperature high-pressure hydrogen storage pressure vessel and use method thereof

Abstract

The invention relates to a low-temperature high-pressure hydrogen storage pressure vessel and a using method thereof.The pressure vessel comprises a vessel body, and the vessel body comprises a metal inner container, a reinforced braid layer, a heat exchange guide pipe, a cold insulation layer and an outer sheath layer; the metal inner container comprises a bottle body and a bottle opening formed in one end of the bottle body. The reinforced braid layer, the cold insulation layer and the outer sheath layer are sequentially arranged outside the metal liner from inside to outside in a sleeving manner and avoid the bottle opening; the heat exchange guide pipe is located between the reinforced braid layer and the cold insulation layer and surrounds the side wall and the bottom of the metal inner container, the two ends of the heat exchange guide pipe extend out of the top of the container body, and the two ends of the heat exchange guide pipe are located on the two sides of the opening of the container body.

Description

technical field [0001] The invention relates to the technical field of hydrogen storage and transportation, in particular to a low-temperature and high-pressure hydrogen storage pressure vessel and a method for using the same. Background technique [0002] Hydrogen is considered to be the ultimate energy source in the new century due to its high mass energy density and no CO2 generation from combustion. At present, under the background of "dual carbon", with the gradual maturity and widespread promotion of hydrogen fuel cell technology, hydrogen, as a key substance that can deeply decarbonize and reduce carbon emissions, has gradually become the core of energy, chemical industry, steel, and transportation fields. . [0003] However, due to the low quality and low bulk density of hydrogen, it is easy to escape and easy to embrittle, which leads to the storage and transportation of hydrogen becoming a bottleneck for the development of the industry. The current mainstream hyd...

AI Technical Summary

Problems solved by technology

This kind of storage and transportation method has high hydrogen storage pressure, high risk, and low hydrogen storage density. It is necessary to provide a high-pressure compressor at the hydrogen-rich end, and a low-pressure hydrogen storage tank at the hydrogen-demanding end.

[0005] The hydrogen storage density of liquid hydrogen has reached 70kg / m3, but the temperature of liquid hydrogen under normal pressure is -252.8°C, the cost of storage and transportation equipment is high, and hydrogen liquefaction requires a lot of energy consumption, accounting for about one-third of the required hydrogen storage. , gasification equipment is required during the use of hydrogen

[0006] Hydrogen storage in porous media is a kind of solid-state hydrogen storage, which generally includes graphene, organic metal framework materials, etc., which are commonly seen in newspapers. This method generally has a good hydrogen storage capacity at liquid nitrogen temperature, but the material manufacturing cost is high. , no industrialized devices have been seen, and the hydrogen storage technology is immature

[0007] Organic hydrogen storage is a potential available hydrogen storage method. The mass hydrogen storage density is about 6% at normal temperature and pressure. The hydrogen-rich end needs a hydrogenation device to generate hydrogen-rich organic matter, and the hydrogen-requiring end needs dehydrogenation reaction. The process requires about a quarter of the energy consumption, and this type of compound is highly toxic, and the hydrogenation and dehydrogenation process needs to be carried out in a specialized chemical park, which limits its development

[0008] Metal hydrides have high volumetric hydrogen storage density, generally greater than 40kg / m3, and low mass hydrogen storage density, but their hydrogen absorption and desorption process is slow, and the cost of metal materials is high, easy to pulverize, and it is difficult to manufacture pressure vessel equipment

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