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Heat self-balancing metal hydride hydrogen supercharging device

A technology of hydride hydrogen and supercharging devices, which is applied in the direction of liquid variable displacement machinery, piston pumps, machines/engines, etc., and can solve problems such as sealing, stability influence, complicated operation, and low compression efficiency

Active Publication Date: 2017-04-19
北京浩运金能新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the operation of metal hydride hydrogen compressors currently on the market is relatively complicated. Because water baths and oil baths are used for heating, it has a great impact on the sealing and stability of the equipment itself, and this method has a large interval between high and low temperature heat exchange. , resulting in long compression intervals and low compression efficiency, making it difficult to achieve large-scale popularization and application
Relatively speaking, the electric heating method has fast temperature rise and stable temperature control. It can be designed into various shapes to adapt to the equipment to be heated, but the conversion from high temperature to low temperature is slow, so it is basically not used in metal hydride hydrogen compressors.

Method used

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Embodiment 1

[0019] Two-stage compression metal hydride hydrogen pressurization device, including two metal hydride compression units 2 and 2', a heat exchange unit 3, and a control unit 5, and metal hydride compression units 2 and 2' are filled with rare earth hydrogen storage materials , there is a hydrogen return channel between the metal hydride compression units 2 and 2', and the heat exchange unit 3 is an electric heating plate with a maximum temperature of 200°C, wrapped on the outer wall of the metal hydride compression units 2 and 2'; the hydrogen source 1 inputs low-pressure hydrogen To the metal hydride compression unit 2, the hydrogen that has undergone primary compression is first stored in the buffer container 4, and after reaching the specified pressure, it enters the metal hydride compression unit 2', and after the secondary compression, the device can output high-pressure hydrogen 6. When the output pressure is insufficient, the hydrogen gas flows back into the metal hydrid...

Embodiment 2

[0021] Three-stage compression metal hydride hydrogen pressurization device, including three metal hydride compression units 2, 2' and 2'', heat exchange unit 3, control unit 4, metal hydride compression units 2, 2' and 2' 'The interior is filled with titanium-based hydrogen storage materials. The heat exchange unit 3 is an electric heating jacket, which can set a maximum temperature of 500°C and has a heat insulation function. The heat exchange unit 3 is wrapped in metal hydride compression units 2, 2' and 2' 'Outer wall; the hydrogen source 1 inputs low-pressure hydrogen into the metal hydride compression unit 2, and after three stages of compression, the device can output high-pressure hydrogen 5, and the automatic operation of the metal hydride hydrogen pressurization device is realized through the control unit 4.

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Abstract

The invention provides a heat self-balancing metal hydride hydrogen supercharging device. The device comprises two or more metal hydride compression units, a heat exchange unit and a control unit. The outer walls of the metal hydride compression units are wrapped with the heat exchange unit. Automatic operation of the metal hydride hydrogen supercharging device is achieved through the control unit. The hydrogen supercharging device adopts the electric heating mode, supercharging is rapid, the efficiency is high, a system is free of noise, easy to operate and convenient to maintain, and the device has good market application prospects.

Description

technical field [0001] The invention relates to a hydrogen pressurization method, which utilizes the principle that metal hydrides have a lower hydrogen release platform pressure at a lower temperature and a higher hydrogen release platform pressure at a higher temperature to achieve the purpose of hydrogen pressurization. Background technique [0002] According to thermodynamic properties, the change of metal hydride dehydrogenation pressure with temperature follows the Van’t Hoff equation: lnP d =△H 0 / RT-△S 0 / R , where Pd is the hydrogen desorption equilibrium pressure, △H 0 and ΔS 0 are the enthalpy and entropy changes of the reaction. [0003] When the hydrogen storage alloy is saturated with hydrogen at a lower temperature and lower pressure, the temperature of the metal hydride is raised to a higher temperature, and the metal hydride will release high-pressure hydrogen at this time. Metal hydride hydrogen compressors not only use this characteristic of hydrogen ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B9/10
CPCF04B9/1095
Inventor 张沛龙朱永国
Owner 北京浩运金能新能源科技有限公司
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