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Low temperature hydrogen adsorption for storage and hydrogen storing tank

A hydrogen storage tank and hydrogen storage technology, applied in fixed-capacity gas storage tanks, gas/liquid distribution and storage, mechanical equipment, etc., can solve problems such as practicality that has yet to be proven, and achieve liquefaction cost savings, weight reduction and manufacturing The effect of constant cost and hydrogen release rate

Inactive Publication Date: 2003-10-08
TIANJIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

As for the so-called carbon nanotubes, although it is possible to store hydrogen at room temperature, its practicality has yet to be proven.

Method used

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  • Low temperature hydrogen adsorption for storage and hydrogen storing tank
  • Low temperature hydrogen adsorption for storage and hydrogen storing tank
  • Low temperature hydrogen adsorption for storage and hydrogen storing tank

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0013] Embodiment: fill a kind of high surface activated carbon in the hydrogen storage tank of 100 liters, its adsorption storage performance to hydrogen when 77K is as attached figure 2 shown. The figure shows that the compressed hydrogen storage at room temperature can only store 14.5 grams of hydrogen per liter under the pressure of 20 MPa; if liquid nitrogen is used as the cold source for adsorption and storage of hydrogen, it can store 30.5 grams under the pressure of 2 MPa. The pressure is reduced to one-tenth, but the hydrogen storage capacity is more than doubled. The entire cylinder can store more than 3 kg of hydrogen, which is enough for a 4-seater car driven by a fuel cell to travel 400 kilometers. If it is used in a large hydrogen transport vehicle, 10m 3 The storage tank can store more than 300 kilograms of hydrogen, which is equivalent to about 4000m 3 Atmospheric pressure hydrogen.

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Abstract

The present invention discloses low-temp adsorption technique for storing hydrogen and its hydrogen storage tank, which can lower the storage pressure of hydrogen and raise the hydrogen storage density based on that the activated carbon or carbon fibres with high specific surface area has high adsorption power to hydrogen at the temp of liquefied nitrogen. The adsorbent bed is cooled to the temp of liquefied nitrogen by the liquefied nitrogen jacket surrounded by insulating layer. In the adsorbent bed there are heat exchanging metal tubes. On aerating hydrogen, liquefied nitrogen is introduced into them and on quick release of hydrogen, it is released into atmosphere. The high-safety decompressing valve is equipped to said jacket and hydrogen storage space. The pressure of stored hydrogen is 2.0 MPa. The stored hydrogen valume is 30 g per litre.

Description

technical field [0001] The invention belongs to hydrogen storage, transportation and distribution technology. Background technique [0002] Hydrogen is not only an important chemical raw material, but also the cleanest and renewable energy. In recent years, hydrogen vehicles are on the verge of coming out, but the hydrogen storage technology has not yet been satisfactorily resolved. Large-scale storage of hydrogen is always a concern. Where hydrogen is required to be used in large quantities, local production and local use are adopted. Many hydrogen-containing gas streams are burned in vain because they cannot solve the problem of hydrogen storage and transportation. Over the years, a lot of research work has been done on metal hydride hydrogen storage, but because of the high specificity of hydrogen storage alloys or the harsh conditions of hydrogen absorption and desorption, they are not suitable for large-scale hydrogen storage and transfer. Alt...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F17C11/00
CPCY02E60/321Y02E60/32
Inventor 周理周亚平
Owner TIANJIN UNIV
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