Hydrogen production method, hydrogen production system, and circulating method and circulating device of hydrogen production electrolyte

A circulation device and electrolyte technology, applied in the direction of electrolysis components, electrolysis process, cells, etc., can solve the problem of low hydrogen purity, achieve the effect of improving hydrogen purity, reducing hydrogen volume, and high system pressure

Active Publication Date: 2021-09-24
阳光氢能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to the high pressure of the entire hydrogen production system, the electrolyte contains hydrogen and oxygen, and the cooled electrolyte carries hydrogen and oxygen into the anode and cathode electrolysis chambers of the electrolytic cell, causing the oxygen generated in the anode electrolysis chamber to be mixed with hydrogen and cathode. The hydrogen produced by electrolysis in the electrolysis chamber is mixed with oxygen, resulting in low purity of the obtained hydrogen

Method used

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  • Hydrogen production method, hydrogen production system, and circulating method and circulating device of hydrogen production electrolyte
  • Hydrogen production method, hydrogen production system, and circulating method and circulating device of hydrogen production electrolyte
  • Hydrogen production method, hydrogen production system, and circulating method and circulating device of hydrogen production electrolyte

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Comparison scheme
Effect test

Embodiment 1

[0168] Such as figure 1 As shown, the hydrogen production electrolyte circulation device provided in Embodiment 1 includes an oxygen-side electrolyte circulation device. Specifically, the above-mentioned circulation device for hydrogen production electrolyte includes: hydrogen side gas-liquid separation device 17, oxygen side gas-liquid separation device 14, oxygen side step-down gas-liquid separation device, oxygen side booster device, oxygen side delivery device, oxygen side side cooling device 110, and a controller.

[0169] Specifically, there are two oxygen-side pressure boosting devices, namely a first oxygen-side pressure boosting device and a second oxygen-side pressure boosting device; the first oxygen-side pressure boosting device is located upstream of the oxygen-side cooling device 110, and the second oxygen-side pressure boosting The side boost device is located downstream of the oxygen side cooling device 110 . During the cycle, the first oxygen-side pressure b...

Embodiment 2

[0180] Such as figure 2 As shown, the hydrogen production electrolyte circulation device provided in the second embodiment includes an oxygen-side electrolyte circulation device and a hydrogen-side electrolyte circulation device. Specifically, the circulation device for the hydrogen-producing electrolyte includes: a hydrogen-side gas-liquid separation device 27, an oxygen-side gas-liquid separation device 24, an oxygen-side step-down gas-liquid separation device, a hydrogen-side step-down gas-liquid separation device, an oxygen-side booster Pressure device, oxygen side delivery device, hydrogen side booster device, hydrogen side delivery device, oxygen side cooling device, hydrogen side cooling device, and controller.

[0181] The above-mentioned oxygen-side step-down gas-liquid separation device and the hydrogen-side step-down gas-liquid separation device are the same step-down gas-liquid separation device, specifically, the step-down gas-liquid separation device includes a ...

Embodiment 3

[0193] Such as image 3 As shown, the hydrogen production electrolyte circulation device provided in the third embodiment includes an oxygen-side electrolyte circulation device and a hydrogen-side electrolyte circulation device. Specifically, the circulation device for the above-mentioned hydrogen production electrolyte includes: a hydrogen-side gas-liquid separation device 37, an oxygen-side gas-liquid separation device 34, an oxygen-side step-down gas-liquid separation device, a hydrogen-side step-down gas-liquid separation device, an oxygen side booster Pressure device, oxygen side delivery device, hydrogen side booster device, hydrogen side delivery device, oxygen side cooling device, hydrogen side cooling device, and controller.

[0194] The above-mentioned oxygen-side step-down gas-liquid separation device includes an oxygen-side flasher 313 and an oxygen-side decompression valve 315 arranged on the inlet pipe of the oxygen-side flasher 313, and the above-mentioned hydro...

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Abstract

The invention discloses a hydrogen production method, a hydrogen production system, and a circulating method and circulating device of hydrogen production electrolyte. The circulating method comprises an oxygen side electrolyte circulating method and/or a hydrogen side electrolyte circulating method. The oxygen side electrolyte circulating method comprises the following steps: carrying out gas-liquid separation on a gas-liquid mixture discharged from the oxygen side of an electrolytic bath to obtain an oxygen side separated electrolyte; carrying out depressurization gas-liquid separation on the oxygen side separated electrolyte to obtain oxygen side depressurization separated electrolyte; and boosting the oxygen side depressurization separated electrolyte and inputting the oxygen side depressurization separated electrolyte into an electrolytic bath. The hydrogen side electrolyte circulating method comprises the following steps: carrying out gas-liquid separation on a gas-liquid mixture discharged from the hydrogen side of the electrolytic bath to obtain a hydrogen side separated electrolyte; carrying out depressurization gas-liquid separation on the hydrogen side separated electrolyte to obtain a hydrogen side depressurization separation electrolyte; and boosting the hydrogen side depressurization separation electrolyte and inputting the electrolyte into the electrolytic cell. According to the circulating method, the purity of hydrogen and oxygen obtained by hydrogen production through water electrolysis can be improved, and high system pressure can also be guaranteed.

Description

technical field [0001] The invention relates to the technical field of hydrogen production by electrolysis of water, and more specifically, to a hydrogen production method, a hydrogen production system, a circulation method and a circulation device for hydrogen production electrolyte. Background technique [0002] At present, in the electrolytic water hydrogen production process, the gas-liquid mixture on the hydrogen side and the gas-liquid mixture on the oxygen side produced by the electrolysis of the electrolyzer enter their respective gas-liquid separators, and the electrolytes separated by the gas-liquid separators are combined and then enter the heat exchanger. It is cooled and then fed back to the electrolyzer. [0003] Due to the high pressure of the entire hydrogen production system, the electrolyte contains hydrogen and oxygen, and the cooled electrolyte carries hydrogen and oxygen into the anode and cathode electrolysis chambers of the electrolytic cell, causing t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B1/04C25B9/13C25B9/67C25B15/08C25B15/02
CPCC25B1/04C25B9/13C25B9/67C25B15/087C25B15/083C25B15/02Y02E60/36
Inventor 徐飞飞
Owner 阳光氢能科技有限公司
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