An electrolytic cell structure

Abstract

The invention relates to the structure of an electrolytic cell, comprising a casing, the casing is formed with an electrolytic chamber, the casing is provided with a water inlet and a water outlet communicating with the electrolytic chamber, an electrolytic cell group is arranged in the electrolytic chamber, and the electrolytic cell group includes an anode sheet and a cathode set opposite to each other piece; the cathode chamber is formed between the cathode piece and the shell, the water passage chamber is formed between the anode piece and the cathode piece, the water inlet is connected with the cathode chamber and the water passage chamber, and the water outlet is connected with the cathode chamber and the water passage chamber The chambers are all connected; the anode piece is connected to the anode conductive piece, and the anode conductive piece is provided with a package structure; two sets of exchange membrane groups are set in the water passage chamber, one set of exchange membrane sets includes at least one piece of proton exchange membrane, and one set of exchange membrane sets is set On the side of the water-passing chamber close to the packaging structure, another set of exchange membranes is set on the other side of the water-passing chamber relative to the previous set of exchange membranes; the cathode piece is at the position relative to each exchange membrane Several through holes are opened.

Description

technical field [0001] The invention relates to the technical field of electrochemistry, in particular to the structure of an electrolytic cell. Background technique [0002] Using water or water-based electrolyte as raw material, an aqueous solution containing ozone and other oxidized groups can be prepared through an electrolysis device. The basic structure of the existing electrolytic cell for preparing ozone or ozone water is composed of an anode and a cathode or a membrane sandwiched between the anode and cathode for proton exchange, and there are also membranes sandwiched between the electrodes for other functions. [0003] Among them, in the common prior art, the structure of the electrolytic cell is that the water inlet direction is perpendicular to the direction of the electrode sheet. In these structures, the water receiving area of ​​the proton exchange membrane is limited, and ozone is generated in the gap between the membrane and the anode sheet. If the gap spa...

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Problems solved by technology

[0003] Among them, in the common prior art, the structure of the electrolytic cell is that the water inlet direction is perpendicular to the direction of the electrode sheet. In these structures, the water receiving area of ​​the proton exchange membrane is limited, and ozone is generated in the gap between the membrane and the anode sheet. The gap space is too small to make it difficult for the water to flow, which makes it difficult for the generated ozone to be carried out by the water flow.

Therefore, as another option, an electrolytic cell structure in which the water inlet direction is parallel to the electrode sheet is proposed to increase the water receiving area of ​​the proton exchange membrane, but this electrolytic cell also has certain problems. For example, the patent ZL202020040411.4 proposes a An ozone electrolytic cell structure, in the patents of Example 06, Example 07 and other embodiments, because the proton exchange membrane is distributed in multiple positions, the current distribution may be uneven or there may be no current on a certain proton exchange membrane , causing the electric field in the electrolytic cell to be uneven, thus affecting the life of the electrode

And, as an effective means to dissipate heat from the proton exchange membrane and increase the water receiving area, through holes are often opened on the cathode sheet corresponding to the position of the proton exchange membrane. If the circulation is too much, the resistance of the water body will be large, which will reduce the flow velocity of the water. If the flow velocity is slow, the ozone water will not be brought out efficiently, which will limit the ozone conversion rate.

[0004] Finally, in order to prevent the water body from contacting the conductive sheet on the anode sheet, the electrolytic cell usually needs to be packaged. The anode package in the electrolytic cell has a high current density and a large heat generation. Excessive heat accumulation may cause the electrode sheet to burn out and affect the service life.

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