CN114395776B - Electrode plate with labyrinth structure and electrolytic tank - Google Patents
Electrode plate with labyrinth structure and electrolytic tank Download PDFInfo
- Publication number
- CN114395776B CN114395776B CN202111551241.1A CN202111551241A CN114395776B CN 114395776 B CN114395776 B CN 114395776B CN 202111551241 A CN202111551241 A CN 202111551241A CN 114395776 B CN114395776 B CN 114395776B
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- plate body
- layer
- water conservancy
- conservancy diversion
- electrode plate
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B11/00—Electrodes; Manufacture thereof not otherwise provided for
- C25B11/02—Electrodes; Manufacture thereof not otherwise provided for characterised by shape or form
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
Abstract
The application provides an electrode plate with a labyrinth structure and an electrolytic tank, the electrode plate comprises a plate body and a flow guide structure arranged on the plate body, the flow guide structure comprises a plurality of flow guide layers which are arranged on the plate body in a radial direction at intervals so as to guide an electrolyte layer, the plurality of flow guide layers are concentrically arranged on the plate body and are mutually sleeved, each flow guide layer comprises a plurality of flow guide plates which are arranged at intervals in the circumferential direction, the plurality of flow guide layers which are arranged on the plate body in a radial direction at intervals are used for guiding the electrolyte layer, the flowing electrolyte is uniformly distributed, the labyrinth type arrangement can effectively avoid the condition that the catalyst at the edge of the electrode plate cannot be effectively utilized, the flowing turbulence degree is greatly increased, the bubble transportation can be accelerated, the residence time of bubbles in a cavity is shortened, the mass transfer process of hydrogen production reaction is enhanced, and the hydrogen production efficiency of a system is improved.
Description
Technical Field
The application relates to the technical field of electrolytic tanks, in particular to an electrode plate with a labyrinth structure and an electrolytic tank.
Background
At present, the surface of a main polar plate inside an electrolytic unit of a filter pressing type electrolytic tank is in a concave-convex structure with alternately concave and convex surfaces, the concave-convex structures on the surfaces of the polar plates enable polar plates on two sides to be in top-to-top contact, namely, incomplete contact is achieved, a large number of bubbles generated by a small chamber move to positions near the concave-convex peaks along with the progress of electrolysis, the contact resistance of the polar plates can be increased, the electrolysis energy consumption is increased, when alkali liquor flows in the small chamber, the concave-convex structures can generate flow perpendicular to the polar plates, but lack of transverse flow, uneven distribution of alkali liquor in the radial direction of the polar plates can be caused, and along with the increase of the size of the electrolytic tank, the uneven distribution of the alkali liquor is more serious, the large-scale development of electrolytic tank equipment is greatly hindered, and then the bubbles in the electrolytic unit possibly are blocked at the concave-convex structures, the residence time of the bubbles is increased, and the electrolysis energy consumption is increased.
Disclosure of Invention
The present application aims to solve at least one of the technical problems in the related art to some extent.
Therefore, the application aims to provide the electrode plate with the labyrinth structure, the plurality of flow guide layers are arranged on the radial direction of the plate body at intervals layer by layer to guide the electrolyte layer, the flowing electrolyte is uniformly distributed, each flow guide layer comprises the plurality of flow guide plates which are arranged at intervals in the circumferential direction, the flow guide plates of the adjacent two layers of flow guide layers are staggered in the circumferential direction to guide and disperse the electrolyte layer by layer, the labyrinth arrangement can effectively avoid the condition that the catalyst at the edge of the electrode plate cannot be effectively utilized, greatly increase the turbulence degree of flow, accelerate the transportation of bubbles, reduce the residence time of the bubbles in a cavity, strengthen the mass transfer process of hydrogen production reaction and improve the hydrogen production efficiency of a system.
In order to achieve the above purpose, the electrode plate with the labyrinth structure provided by the application comprises a plate body and a flow guiding structure arranged on the plate body, wherein the flow guiding structure comprises a plurality of flow guiding layers which are arranged on the plate body in a radial direction at intervals layer by layer so as to guide an electrolyte layer, the plurality of flow guiding layers are concentrically arranged on the plate body and mutually sleeved, each flow guiding layer comprises a plurality of flow guiding plates which are arranged at intervals in a circumferential direction, and the flow guiding plates of two adjacent flow guiding layers are staggered in the circumferential direction so as to guide and disperse the electrolyte layer by layer.
Further, the guide plate is of an arc-shaped structure, and the concave part of the guide plate faces the circle center of the plate body.
Further, the upper top surface of the guide plate is of a plane structure.
Further, in the radial direction of the plate body, the arc length of the guide plate of the guide layer close to the center of the plate body is equal to the gap distance between the guide plates of the guide layer adjacent to and far from the center of the plate body.
Further, the device also comprises an inlet runner and an outlet runner which are arranged at the edge of the plate body, wherein the inlet runner and the outlet runner are oppositely arranged in the radial direction of the plate body.
Further, the electrolyte distributor further comprises a turbulence structure, wherein the turbulence structure is arranged at the inlet runner and the outlet runner and is used for performing turbulence dispersion on the passing electrolyte.
Further, the spoiler structure includes a left spoiler and a right spoiler, which are disposed at intervals in a circumferential direction.
Further, the inlet flow passage and the outlet flow passage are directed toward a gap between the left spoiler and the right spoiler, respectively.
Further, the gap between the left spoiler and the right spoiler is gradually reduced in the radial direction.
Further, the number of the guide plates of each guide layer is the same.
An electrolytic tank comprises the electrode plate with the labyrinth structure.
Additional aspects and advantages of the application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the application.
Drawings
The foregoing and/or additional aspects and advantages of the application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:
fig. 1 is a schematic structural diagram of an electrode plate with a labyrinth structure according to an embodiment of the present application;
FIG. 2 is a graph showing a velocity field profile of an electrode plate having a labyrinth structure according to an embodiment of the present application;
FIG. 3 is a graph showing a particle distribution diagram of 0-2s for a labyrinth structured electrode plate according to an embodiment of the present application under a steady-state flow field;
FIG. 4 is a graph showing a particle distribution diagram of a labyrinth structured electrode plate for 3-5s in a steady-state flow field according to an embodiment of the present application;
FIG. 5 is a graph showing a particle distribution diagram of an electrode plate of a labyrinth structure according to an embodiment of the present application under a steady-state flow field for 10-20 s.
Detailed Description
Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the application. On the contrary, the embodiments of the application include all alternatives, modifications and equivalents as may be included within the spirit and scope of the appended claims.
Fig. 1 is a schematic structural diagram of an electrode plate with a labyrinth structure according to an embodiment of the present application.
Referring to fig. 1-5, an electrode plate with a labyrinth structure comprises a plate body 1 and a flow guiding structure arranged on the plate body 1, wherein the flow guiding structure comprises a plurality of flow guiding layers 2 which are arranged on the plate body 1 in a radial direction at intervals layer by layer to guide an electrolyte layer, the plurality of flow guiding layers 2 are arranged on the plate body 1 concentrically and are mutually sleeved, each flow guiding layer 2 comprises a plurality of flow guiding plates 3 which are arranged at intervals in a circumferential direction, and the flow guiding plates 3 of the adjacent two flow guiding layers 2 are staggered in the circumferential direction to guide and disperse the electrolyte layer by layer. In the structure of the electrolytic tank, the electrode plates at two sides can form multipoint contact in a top-to-top mode, on the other hand, the disturbance degree of flow is increased, the concentration difference of electrolyte at all positions in the flow channel is reduced, and the electrolyte is distributed more uniformly.
In this embodiment, specifically, the plate body 1 may be made of a steel plate, and the labyrinth type guide plate structure is processed on the steel plate by adopting a cold-rolling deep drawing mode, and is welded with the steel electrode frame into a whole. Alternatively, in other embodiments, the labyrinth-type baffle structure may be formed by molding. The application is not limited in this regard. The electrode plate can play a role in supporting the catalytic electrode and uniformly distributing electrolyte.
The plate body 1 can be circular plate, a plurality of guide layers 2 are annular concentric to be set up on the plate body, and the interval sets up between a plurality of guide layers 2, so that electrolyte carries out the water conservancy diversion diffusion through a plurality of guide layers 2, every guide layer 2 includes a plurality of guide plates 3 that the interval set up on its annular place circular orbit, and the guide plates 3 of adjacent two-layer guide layer 2 are crisscross to be set up, the whole integrated configuration is labyrinth structure, electrolyte is at the water conservancy diversion diffusion through a plurality of guide plate layer layers, fully diffuse to the plate body edge, and the guide plate protrusion sets up on the plate body, the surface of plate body is planar structure, the guide plate is vertical to be set up on the plate body, electrolyte is shunted by its layer by layer through the guide plate, the vertical flow when having avoided the electrolyte to pass through the electrode plate, can promote the evenly distributed of electrolyte on the polar plate, reduce contact resistance and bubble in the indoor dwell time, improve electrolysis efficiency, reduce the energy consumption.
The guide plate 3 is of an arc-shaped structure, and the concave part of the guide plate 3 faces the circle center of the plate body. In the flow direction of the electrolyte, the guide plates 3 are arranged back to back, guide the electrolyte to two sides by means of the outer radian of the guide plates 3, and diffuse to the whole electrode plate layer by layer through the guide plates at the adjacent sides. The turbulent motion degree of the flow is increased, the transportation of bubbles can be accelerated, the residence time of the bubbles in the cavity is reduced, the mass transfer process of the hydrogen production reaction is enhanced, and the hydrogen production efficiency of the system is improved.
The upper top surface of the guide plate 3 is of a plane structure. The top of the guide plate with the labyrinth type small unit structure is of a horizontal structure, so that the electrode plates on two sides can be tightly contacted with each other, the contact surfaces are flush, the increase of contact resistance caused by accumulation of bubbles during passing is avoided, and the electrolysis energy consumption is reduced.
In the radial direction of the plate body 1, the arc length of the guide plate 3 of the guide layer 2 close to the center of the plate body 1 is equal to the gap distance between the adjacent guide plates 3 of the guide layer 2 far away from the center of the plate body 1. Through the structural design, a small amount of electrolyte is prevented from penetrating from gaps of guide plates of adjacent layers, the electrolyte is further ensured to diffuse layer by layer, and the guide diffusion effect of the electrode plates is ensured.
The labyrinth structured electrode plate further comprises an inlet runner 4 and an outlet runner 5 which are arranged at the edge of the plate body, and the inlet runner 4 and the outlet runner 5 are oppositely arranged in the radial direction of the plate body 1. Electrolyte flows in through the alkali liquor inlet runner 4, hydrogen or oxygen is generated by electrolytic reaction on the electrode, and then the mixture of alkali liquor and gas flows out of the gas-liquid outlet runner 5 and enters the next working section. Under the condition that the inlet flow channel 4 and the outlet flow channel 5 are oppositely arranged to ensure the consistency of electrolyte flow directions, the electrolyte fully diffuses the whole electrode plate and then flows out of the opposite sides of the electrode plate, so that the liquid accumulation is avoided.
The electrode plate with the labyrinth structure further comprises a turbulence structure, wherein the turbulence structure is arranged at the inlet runner and the outlet runner and is used for turbulence dispersion of passing electrolyte. In this embodiment, in view of the fact that the flow velocity of the electrolyte is relatively fast when the electrolyte just enters the electrode plate, a turbulence structure is additionally arranged at the electrolyte inlet of the electrolyte, so that the electrolyte is subjected to speed reduction and flow distribution, the overall flow guiding effect of the electrode plate is improved, the electrolyte just enters the electrode plate and is diffused to two sides of the electrode plate, and then the electrolyte is sequentially guided and diffused by the flow guiding plate layer.
The spoiler structure comprises a left spoiler 6 and a right spoiler 7, wherein the left spoiler 6 and the right spoiler 7 are arranged at intervals in the circumferential direction. Specifically, the left side edge of the left side spoiler is aligned with the right side edge of the adjacent spoiler, the right side edge of the right side spoiler is aligned with the left side edge of the adjacent spoiler, a gap is arranged between the left side spoiler and the right side spoiler, and electrolyte is guided to the left side and the right side by the left side spoiler and the right side spoiler when passing through the left side spoiler and the right side spoiler, so that the electrolyte is further split by the adjacent spoiler.
The inlet flow channel 4 and the outlet flow channel 5 are directed towards the gap between the left spoiler 6 and the right spoiler 7, respectively. The flow obstruction of the electrolyte is reduced, so that the electrolyte can be quickly introduced into the electrode plate to conduct diversion diffusion.
The gap between the left spoiler 6 and the right spoiler 7 is gradually reduced in the radial direction. During the inflow of electrolyte, diffusion is forced to split to both sides during the electrolyte flow due to the reduced path.
The number of the guide plates 3 of each guide layer 2 is the same. Therefore, a regular labyrinth structure is formed, the size of each layer of guide plates is reduced along with the inward shrinkage of the annular track in the radial direction, the guide plates of each layer have the same guide diffusion effect, and of course, in other embodiments, other designs can be adopted, and the application is not limited to the above.
An electrolytic tank comprises the electrode plate with the labyrinth structure. In this embodiment, the technical effects of the electrolytic cell are equivalent to those of the electrode plate, and will not be described in detail herein.
It should be noted that in the description of the present application, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, in the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and further implementations are included within the scope of the preferred embodiment of the present application in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present application.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present application have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the application, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the application.
Claims (6)
1. The utility model provides an electrode plate of labyrinth type structure, its characterized in that includes the plate body and set up in the water conservancy diversion structure on the plate body, the water conservancy diversion structure includes a plurality of water conservancy diversion layers that set up in radial upper layer-by-layer interval of plate body in order to water conservancy diversion to electrolyte layer, a plurality of water conservancy diversion layers are concentric to be set up and overlap each other on the plate body, each water conservancy diversion layer includes a plurality of water conservancy diversion boards that set up at the circumferencial direction interval, each water conservancy diversion board of the water conservancy diversion layer of adjacent two-layer is crisscross setting in the circumferencial direction in order to water conservancy diversion scatter to electrolyte layer by layer, the water conservancy diversion board is arc structure, and the concave part of water conservancy diversion board is towards the centre of a circle of plate body sets up, the upper top surface of water conservancy diversion board is planar structure;
the device also comprises an inlet runner and an outlet runner which are arranged at the edge of the plate body, wherein the inlet runner and the outlet runner are oppositely arranged in the radial direction of the plate body;
still include the vortex structure, the vortex structure set up in entry runner department with exit runner department, the vortex structure is used for carrying out the vortex dispersion to the electrolyte of process, the vortex structure includes left side spoiler and right side spoiler, left side spoiler with right side spoiler is in circumferencial direction interval setting.
2. The electrode plate of labyrinth structure as claimed in claim 1, wherein in the radial direction of said plate body, the arc length of the baffle of said baffle layer near the center of said plate body is equal to the gap distance between the baffle of said baffle layer adjacent to and far from the center of said plate body.
3. The labyrinth structured electrode plate of claim 1, wherein the inlet flow channel and the outlet flow channel face the gap between the left spoiler and the right spoiler, respectively.
4. The labyrinth structured electrode plate of claim 1, wherein a gap between the left spoiler and the right spoiler is tapered in a radial direction.
5. The electrode plate of labyrinth structure as claimed in claim 1, wherein the number of flow guide plates of each of said flow guide layers is the same.
6. An electrolysis cell comprising an electrode plate of labyrinth structure as claimed in any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111551241.1A CN114395776B (en) | 2021-12-17 | 2021-12-17 | Electrode plate with labyrinth structure and electrolytic tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111551241.1A CN114395776B (en) | 2021-12-17 | 2021-12-17 | Electrode plate with labyrinth structure and electrolytic tank |
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| Publication Number | Publication Date |
|---|---|
| CN114395776A CN114395776A (en) | 2022-04-26 |
| CN114395776B true CN114395776B (en) | 2023-10-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111551241.1A Active CN114395776B (en) | 2021-12-17 | 2021-12-17 | Electrode plate with labyrinth structure and electrolytic tank |
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| CN114395776A (en) | 2022-04-26 |
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