Metal hydride hydrogen-pressurizing device with full-automatic multi-stage compression function

Abstract

The invention provides a metal hydride hydrogen-pressurizing device with a full-automatic multi-stage compression function. The metal hydride hydrogen-pressurizing device with the full-automatic multi-stage compression function comprises two or more metal hydride compression units, a heat exchange unit and a control unit. The metal hydride compression units are arranged inside the heat exchange unit, the pressure, flow and temperature of a system are detected through the control unit, and thus automatic operation of the metal hydride hydrogen-pressurizing device is achieved. The metal hydride hydrogen-pressurizing device with the full-automatic multi-stage compression function is small in occupied space, free of noise, low in compression cost, easy to operate and convenient to maintain, has a hydrogen purification function, is an economical and efficient hydrogen compressor product, and can replace a traditional mechanical compressor.

Description

technical field [0001] The invention relates to a method for compressing hydrogen, 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 work by using this characteristic of hydrog...

AI Technical Summary

Problems solved by technology

Most of the metal hydride hydrogen compressors currently developed are single-stage compression, with limited boosting effect, and are all manually operated. Because the adjustment of temperature and pressure is involved, the operation is relatively complicated, and its popularization and application are greatly restricted.

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