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Continuous seawater electrolysis hydrogen production system and working method thereof

A hydrogen production system and seawater technology, applied in electrolysis components, electrolysis process, heat exchange cooling crystallization, etc., can solve the problems of blockage of electrolysis system and accelerated corrosion of electrolysis system, and achieve the effect of promoting crystallization and easy crystallization.

Pending Publication Date: 2022-02-08
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Seawater contains about 0.5M sodium chloride. With the consumption of water during electrolysis, the concentration of sodium chloride in the electrolysis system will continue to rise until saturated and precipitated. If the sodium chloride crystals are not separated in time, the electrolysis system will be damaged. Clogging and accelerated corrosion of electrolytic systems

Method used

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  • Continuous seawater electrolysis hydrogen production system and working method thereof
  • Continuous seawater electrolysis hydrogen production system and working method thereof

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Embodiment 1

[0058] A continuous electrolysis seawater hydrogen production system, the electrolysis seawater hydrogen production system includes: an electrolytic cell 1, a hydrogen gas-liquid separator 3, an oxygen-liquid separator 5, and a sodium chloride precipitation device.

[0059] Wherein, the electrolytic cell 1 comprises a cathode, an anode, a diaphragm between the anode and cathode, a bipolar plate and an end plate for fixing the anode and cathode, and a power supply device for energizing the anode and cathode, and the end plate and the bipolar plate in the electrolytic cell Corrosion-resistant stainless steel or titanium-based substrates are coated with a chlorine-resistant corrosion-resistant coating.

[0060] The anode is a highly active, highly selective, and highly stable oxygen evolution catalyst supported by a conductive current collector, the cathode is a hydrogen evolution catalyst supported by a conductive current collector, and both the anode and the cathode are made of ...

Embodiment 2

[0083] The working method of the continuous electrolysis seawater hydrogen production system of embodiment 1 is as follows:

[0084] A certain amount of seawater is introduced into the electrolytic cell 1, the electrolytic cell 1 is energized, and the electrolytic system starts to operate. The hydrogen gas and a certain amount of electrolyte produced by the electrolysis of seawater at the cathode enter the hydrogen gas-liquid separator 3 through the hydrogen output pipeline 2, and the oxygen and a certain amount of electrolyte produced at the anode enter the oxygen gas-liquid separator 5 through the oxygen output pipeline 4;

[0085] In the hydrogen gas-liquid separator 3, hydrogen is separated and collected;

[0086] In the oxygen gas-liquid separator 5, oxygen is separated and collected;

[0087] The hydrogen gas-liquid separator 3 and the oxygen gas-liquid separator 5 are mixed with the electrolyte after gas separation, and then enter the electrolytic cell through the circ...

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Abstract

The invention belongs to the technical field of seawater electrolysis, and particularly relates to a continuous seawater electrolysis hydrogen production system and a working method thereof. The seawater electrolysis hydrogen production system comprises the following components: an electrolytic bath (1), a hydrogen-liquid separator (3), an oxygen-liquid separator (5) and a sodium chloride precipitation device; the sodium chloride precipitation device comprises a sodium chloride precipitation tank (6); the sodium chloride precipitation tank (6) comprises a cooling structure and an extrusion structure; the cooling structure is used for cooling electrolyte in the sodium chloride precipitation tank (6), and the extrusion structure is used for separating sodium chloride crystals in the sodium chloride precipitation tank (6). The continuous seawater electrolysis hydrogen production system comprises the electrolysis module and the sodium chloride precipitation module, the sodium chloride precipitation process is separated from the electrolysis system, and sodium chloride is separated from the electrolysis system under the condition that electrolysis is not affected, so that continuous operation of the seawater electrolysis hydrogen production system is realized.

Description

technical field [0001] The invention belongs to the technical field of electrolytic seawater, and in particular relates to a continuous electrolytic seawater hydrogen production system and a working method thereof. Background technique [0002] In the past hydrogen production strategies of alkaline electrolyzed water and acidic electrolyzed water, the raw material water is ultrapure water or deionized water, which belongs to the category of fresh water, which is obtained through a series of purification of fresh water, and the cost is relatively high; another On the one hand, considering that the fresh water resource reserves only account for 2.8% of the global water resource reserves, 2.1% of which are undeveloped glacier water, and the fresh water available to human beings only accounts for 0.2% of the global water resources. If human beings' huge energy and chemical hydrogen supply depend on fresh water resources, it will inevitably bring huge pressure to human survival. ...

Claims

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Application Information

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IPC IPC(8): C25B1/04C25B9/19C25B9/00C25B15/08C01D3/06B01D9/02
CPCC25B1/04C25B9/19C25B9/00C25B15/087C01D3/06B01D9/0013Y02E60/36
Inventor 邝允王士元孙晓明
Owner BEIJING UNIV OF CHEM TECH