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Gasket for electrolytic cell and electrolytic cell using same

An electrolytic cell and gasket technology, which is applied in the electrolysis process, electrolysis components, engine sealing, etc., can solve the problems related to the inability to prevent the early damage of the diaphragm and the durability of the diaphragm, and achieve high practical value, excellent durability and easy operation Effect

Active Publication Date: 2022-03-04
DE NORA PERMELEC LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, during the electrolysis operation, the thinner sheet-shaped diaphragm is difficult to be firmly fixed, but continues to be in an unstable state of bending left and right, and the diaphragm will always contact and rub against the anode and cathode, and the early damage of the diaphragm cannot be prevented.
That is, in the prior art described above, there are defects related to the durability of the maintained diaphragm in addition to the problems listed above.

Method used

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  • Gasket for electrolytic cell and electrolytic cell using same
  • Gasket for electrolytic cell and electrolytic cell using same
  • Gasket for electrolytic cell and electrolytic cell using same

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach 〕

[0072] figure 2 It is a schematic sectional view for demonstrating the 1st Embodiment of the gasket for electrolysis of this invention used for the alkaline water electrolytic cell 24 which is an electrolytic cell. In the alkaline water electrolysis performed using the alkaline water electrolytic tank 24, 25% by mass to 35% by mass of KOH aqueous solution or NaOH aqueous solution is used as an electrolytic solution. When the electrolytic solution is supplied to the anode chamber 15 and the cathode chamber 16 for electrolysis, the electrolytic solution and oxygen gas are discharged from the anode chamber 15 to the outside of the system, and the electrolytic solution and hydrogen gas are discharged from the cathode chamber 16 to the outside of the system. The discharged electrolytic solution is mixed outside the system and circulated to the anode chamber 15 and the cathode chamber 16 to perform continuous electrolysis.

[0073] Such as figure 2 As illustrated, the alkaline w...

no. 2 Embodiment approach 〕

[0092] In the first embodiment, an example in which the notch portion 20 is provided in the notch forming portion 27 of the first surface 18 of the gasket 17 in contact with the anode-side metal frame 2 has been described. In the second embodiment, a notch forming part 27 is provided on the second surface 19 of the gasket 17 opposite to the above, which is in contact with the cathode side metal frame 4, and a notch part 20 (not shown) is formed. Show). In this example, the filled portion 26 of the gasket 17 above the center of the second surface 19 is brought into surface contact with the cathode-side metal frame 4, while the entire first surface 18 of the gasket 17 is brought into contact with the cathode side metal frame 4. The two surfaces of the metal frame on the anode side are in contact. In this case, the cathode-side metal frame 4 and the cathode 3 are arranged in the same plane. Therefore, the diaphragm 6 whose edge is accommodated and held in the notch 20 provided ...

no. 3 Embodiment approach 〕

[0095] In the third embodiment, in addition to the structure of the first embodiment or the second embodiment, a member in which the surface of the anode 1 on the side of the separator 6 is coated with an anode activation catalyst is used, and the cathode 3 is used on the side of the separator 6 A component made of a cathode-activated catalyst coated on its surface. With such a configuration, it is possible to achieve high performance of the electrolytic cell. In addition, in order to increase the performance of the electrolytic cell of the present invention, it is preferable to install the anode-side fine mesh 28 coated with an anode catalyst active coating on the surface of the anode 1 on the side of the diaphragm 6 and / or to mount and implement the anode-side fine mesh 28 on the surface of the cathode 3 on the side of the diaphragm 6. The cathode catalyst active coated cathode side fine mesh 29 is provided.

[0096] In order to further improve the performance of the electr...

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Abstract

The present invention provides a gasket for an electrolytic cell and an electrolytic cell, the gasket being capable of accommodating and holding a diaphragm inside the electrolytic cell by a simple operation, being capable of more reliably preventing an electrolyte solution and an electrolysis-generated gas from leaking from the inside of the electrolytic cell, and being capable of improving the reliability of the electrolytic cell. As a result, it is possible to maintain the diaphragm at a position along the electrode in contact with the electrode, and therefore it is possible to suppress damage to the diaphragm and to stably use the diaphragm for a long period of time. A gasket for an electrolytic cell and an electrolytic cell using the gasket for an electrolytic cell, the gasket for an electrolytic cell being configured from a frame-shaped thin-plate-shaped frame and having a first surface that is in contact with an anode-side metal frame and a second surface that is in contact with a cathode-side metal frame, the first surface being in contact with the anode-side metal frame and the second surface being in contact with the cathode-side metal frame. The first surface and / or the second surface is provided with a cutout part which is formed by cutting off a region including the edge of the anode chamber side or the edge of the cathode chamber side with a uniform thickness, and which has a step having a thickness substantially the same as the thickness of the separator. The sealing gasket for the electrolytic cell accommodates and holds the end part of the diaphragm in the notch part.

Description

technical field [0001] The present invention relates to a gasket for an electrolytic cell and an electrolytic cell using the gasket for an electrolytic cell. Background technique [0002] As an electrolytic cell used for alkaline water electrolysis, pure water electrolysis, non-purified water electrolysis, salt electrolysis, chloride aqueous solution electrolysis, bromide aqueous solution electrolysis, hydrochloric acid aqueous solution electrolysis, sulfuric acid aqueous solution electrolysis, etc., it is mostly used between the anode and the cathode A diaphragm is provided and used to isolate the anode and cathode of the electrolytic cell. The electrolytic solution supplied to these electrolytic cells, electrolytic gas such as hydrogen, oxygen, chlorine gas, and halogen gas produced by electrolysis, and the electrolytic solution in the electrolytic cell should not leak from the edge of the separator to the outside of the electrolytic cell. Leakage of electrolytically gene...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/10F16J15/12C25B9/60C25B9/19C25B13/02C25B15/00C25B11/03
CPCF16J15/104F16J15/102F16J15/12C25B9/60C25B9/19C25B13/02C25B15/00C25B11/03Y02P20/141C25B9/23C25B9/77C25B9/05C25B1/04C25B1/46C25B11/052C25B9/63
Inventor 真锅明义
Owner DE NORA PERMELEC LTD
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