CN220352247U - Electrochemical reactor - Google Patents

Abstract

The utility model discloses an electrochemical reactor, which comprises two electrode plates, two electrode brackets and an ion exchange membrane; at least one electrode block is convexly arranged on one side surface of each electrode plate; each electrode support is provided with a cavity with two open ends, each electrode plate cover is arranged at one open end of one electrode support, and the electrode blocks are arranged towards the cavity; the ion exchange membrane is arranged between the two electrode brackets, and the ion exchange membrane is attached to the two openings of the two electrode brackets, which are away from the two electrode plates. The technical scheme of the utility model solves the problems of smaller electrode specific area, low solution electrolysis efficiency and lower yield of electrochemical reaction products of the existing electrochemical reactor, and improves the efficiency of electrochemical reaction.

Description

Electrochemical reactor

Technical Field

The utility model relates to the technical field of pharmaceutical chemical production equipment, in particular to an electrochemical reactor.

Background

The electrochemical reactor is one kind of apparatus for electrochemical reaction, and has two electrodes with different polarities, and the electrodes are used to electrolyze the solution to obtain cathode and anode products.

The electrodes of the existing electrochemical reactor are mostly flat electrodes, but the specific area of the flat electrodes is small, so that the problems of low solution electrolysis efficiency and low yield of electrochemical reaction products are caused.

Disclosure of Invention

The utility model mainly aims to provide an electrochemical reactor, and aims to solve the problems of small specific electrode area, low solution electrolysis efficiency and low yield of electrochemical reaction products of the existing electrochemical reactor.

In order to achieve the above object, the present utility model provides an electrochemical reactor, which comprises two electrode plates, two electrode holders and an ion exchange membrane; at least one electrode block is convexly arranged on one side surface of each electrode plate; each electrode support is provided with a cavity with two open ends, each electrode plate cover is arranged at one open end of one electrode support, and the electrode block is arranged towards the cavity; the ion exchange membrane is arranged between the two electrode brackets, and the ion exchange membrane is attached to the two openings of the two electrode brackets, which deviate from the two electrode plates.

In an embodiment of the utility model, a plurality of electrode blocks are provided, and the plurality of electrode blocks are arranged on one side surface of the electrode plate in an array.

In an embodiment of the present utility model, the cross-section of the electrode block is rectangular, the cavity wall of the cavity is provided with a plurality of serrations, and the plurality of serrations are circumferentially spaced along the cavity wall of the cavity, and the electrode block adjacent to the cavity wall is spaced from the tooth grooves of the serrations.

In an embodiment of the present utility model, the cavity includes a plurality of chambers that are mutually communicated, the plurality of chambers are arranged at intervals along a direction in which the electrode plates extend, the plurality of electrode blocks are divided into a plurality of groups, and each chamber is provided with a group of the electrode blocks.

In one embodiment of the utility model, the spacing of the plurality of electrode blocks of each set is 1-10mm.

In one embodiment of the utility model, a sealing ring is arranged between the ion exchange membrane and the electrode support.

In an embodiment of the utility model, the electrode support is recessed towards the side surface of the electrode plate to form a mounting groove, the electrode plate is arranged in the mounting groove, and the surface of the electrode plate, which faces away from the electrode block, is flush with the surface of the electrode support.

In one embodiment of the present utility model, the material of the electrode block is platinum;

or, the surface of the electrode block is provided with electrode materials.

In an embodiment of the present utility model, through holes are formed on end surfaces of two ends of the electrode support, and the through holes are communicated with the cavity.

In an embodiment of the present utility model, a current collector, an insulating plate and a plate frame fixing plate are sequentially disposed on one side of each of the two electrode plates opposite to the electrode block, a plurality of connection holes corresponding up and down are formed on the surfaces of the ion exchange membrane, the electrode support, the current collector, the insulating plate and the plate frame fixing plate, and the connection members sequentially penetrate through the connection holes to fixedly mount the electrochemical reactor.

The electrochemical reactor comprises an electrode plate, an electrode bracket and an ion exchange membrane, wherein a cavity with two open ends is formed in the electrode bracket, and the ion exchange membrane and the electrode plate are respectively covered at the openings. Through setting up two electrode plates and two electrode holders to set up an electrode plate and an electrode holder respectively in the both sides of ion exchange membrane, so that ion exchange membrane has formed negative pole room and positive pole room with electrode plate and electrode holder respectively, and the ion after the solution electrolysis can pass through ion exchange membrane, has realized the separation of negative pole product and positive pole product, can effectually reduce or avoid the tautomerism reaction in the product formation process, thereby improves the product yield. Meanwhile, a plurality of electrode blocks are convexly arranged on one side of the electrode plate and face one side of the cavity, so that the two-dimensional flat plate electrode is converted into a three-dimensional electrode, the convexly arranged electrode blocks increase the specific area of the electrode, the problems of low electrolysis efficiency and low yield of electrochemical reaction products of the existing electrochemical reactor solution are solved, and the efficiency of electrochemical reaction is improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of the structure of an electrochemical reactor according to the present utility model;

FIG. 2 is an exploded view of the electrochemical reactor of FIG. 1;

FIG. 3 is a schematic view of the electrode holder of FIG. 2;

fig. 4 is a schematic structural view of the electrode plate in fig. 2.

Reference numerals illustrate:

reference numerals	Name of the name	Reference numerals	Name of the name
				1	Electrochemical reactor	25a	Mounting groove
10	Ion exchange membrane	30	Electrode plate
				20	Electrode support	31	Electrode block
21a	Cavity cavity	40	Current collector
				22a	Through hole	50	Insulating board
23	Partition piece	60	Plate frame fixing plate
				24	Saw tooth	70a	Connecting hole

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

In the present utility model, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. The meaning of "and/or", "and/or" as used throughout is intended to include three side-by-side schemes, for example "a and/or B", including a scheme, or B scheme, or a scheme where a and B meet at the same time. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

The present utility model proposes an electrochemical reactor 1.

Referring to fig. 1, in an embodiment of the present utility model, an electrochemical reactor 1 includes two electrode plates 30, two electrode holders 20, and an ion exchange membrane 10; at least one electrode block 31 is protruded from one side surface of each electrode plate 30; each electrode support 20 is formed with a cavity 21a with two open ends, each electrode plate 30 is covered on one end of one electrode support 20 and is provided with an opening, and the electrode block 31 is arranged towards the cavity 21 a; the ion exchange membrane 10 is arranged between the two electrode brackets 20, and the ion exchange membrane 10 is attached to the two openings of the two electrode brackets 20, which are away from the two electrode plates 30.

The electrochemical reactor 1 is applied to the fields of chiral medicine preparation, chiral compound synthesis, environmental protection, new energy field, material science and the like. In this embodiment, the polarities of the two electrode plates 30 are different so that the solution can be electrolyzed between the two electrodes. By convexly arranging at least one electrode block 31 on one side surface of the electrode plate 30 facing the cavity 21a, so that the two-dimensional flat plate electrode is converted into a three-dimensional electrode, the effective acting area of the electrode plate 30 is increased, the specific surface area of the electrode is greatly increased, and the space-time yield of the electrochemical reactor 1 is improved. The electrode holder 20 serves to support the electrode plate 30 and to form a cathode chamber and an anode chamber, and a cavity 21a having both ends opened is formed in the interior of the electrode holder 20. By providing two electrode plates 30 and two electrode holders 20, and providing one electrode plate 30 and one electrode holder 20 on each side of the ion exchange membrane 10, respectively, the ion exchange membrane 10 forms a cathode chamber and an anode chamber by enclosing the electrode plates 30 and the electrode holders 20, respectively. The ion exchange membrane 10 is a microporous membrane that can only pass ions, so that a solution cannot pass through the ion exchange membrane 10 before electrolysis and is stored in a cathode chamber or an anode chamber. By arranging the ion exchange membrane 10, the circulation channel of the electrolyte solution fluid is transformed into a micro-channel with smaller size, so that the mixing efficiency of the fluid is greatly improved. After the electrode is electrified, anions and cations electrolyzed by the solution pass through the ion exchange membrane 10 under the action of an electric field and respectively enter the cathode chamber and the anode chamber, so that separation of a cathode product and an anode product is realized, tautomerism reaction in the process of forming the products can be effectively reduced or avoided, and the product yield is improved.

As shown in fig. 1 and 4, in an embodiment of the present utility model, a plurality of electrode blocks 31 are provided, and the plurality of electrode blocks 31 are disposed in an array on one side of the electrode plate 30.

In the present embodiment, the plurality of electrode plates 30 are provided to increase the specific electrode area to increase the electrolysis efficiency and increase the yield of the electrolyte. The plurality of electrode blocks 31 are arranged on the side surface of the electrode plate 30 in an array manner, so that the densities of electrodes at different positions in the whole cathode chamber and the anode chamber are similar, and the electrolytic degrees of the solutions in the cathode chamber and the anode chamber are similar.

Referring to fig. 1 and 3, in an embodiment of the present utility model, the electrode plate 30 has a rectangular cross-sectional shape, the cavity wall of the cavity 21a is provided with a plurality of saw teeth 24, the plurality of saw teeth 24 are arranged at intervals along the circumferential direction of the cavity wall of the cavity 21a, and the electrode blocks 31 adjacent to the cavity wall are arranged at intervals with the tooth grooves of the saw teeth 24.

In the present embodiment, the electrode block 31 may have a quadrangular prism shape, that is, a rectangular cross-sectional shape. The quadrangular prism-shaped electrode block 31 increases the electrode effective area of the electrode plate 30 and improves the electrolysis efficiency. The cavity wall of the cavity 21a is provided with a plurality of saw teeth 24, and the saw teeth 24 are arranged at intervals along the circumferential direction of the cavity wall of the cavity 21a, and when the electrode blocks 31 are inserted into the cavity 21a, the prismatic electrode blocks 31 positioned near the two side walls of the cavity 21a are arranged at intervals with tooth grooves of the saw teeth 24. It will be appreciated that in practice, the number of electrode blocks 31 that can be provided in the cavity 21a may be increased by reducing the gap between the prismatic electrode blocks 31 and the serrations 24 to increase the electrolysis efficiency and space-time yield. Meanwhile, a plurality of electrode blocks 31 are arranged in the cavity 21a, so that the cavity 21a is divided into a plurality of micro-flow channels, and when the solution enters from the liquid inlet, the solution is split by the plurality of electrode blocks 31, so that the solution electrolysis efficiency is improved. In other embodiments, the cross-sectional shape of the electrode block 31 may also be triangular or circular.

Referring to fig. 3, in an embodiment of the present utility model, the cavity 21a includes a plurality of chambers that are communicated with each other, the plurality of chambers are arranged at intervals along the extending direction of the electrode plate 30, and the plurality of electrode blocks 31 are divided into a plurality of groups, each of the chambers being provided with a group of electrode blocks 31.

In this embodiment, the partition 23 is provided on the walls of the two sides of the cavity 21a at intervals, the cross-section of the partition 23 may be semicircular, and the partition blocks on the walls of the two sides are disposed opposite to each other, so that the cavity 21a is divided into a plurality of chambers, and the plurality of chambers are mutually communicated. The electrode blocks 31 arranged on the electrode plate 30 are divided into a plurality of groups, each group is provided with a plurality of electrode blocks 31, a group of electrode blocks 31 are correspondingly embedded in each cavity, and the electrode blocks 31 with different shapes can be arranged in each cavity, or electrode materials are coated, electroplated and immobilized on the electrode blocks 31 to have the function of electrodes, and the plurality of cavities and the plurality of groups of electrode blocks 31 are arranged to facilitate the comparison of the electrolytic efficiency of the electrode blocks 31 with different structural characteristics. In the present embodiment, each of the oppositely disposed divided pieces 23 is disposed at an interval therebetween, and in practical use, the gap between the oppositely disposed divided pieces 23 may be disposed to be large so that the passage communicating between the adjacent chambers is large. Therefore, when the solution passes through one chamber and is split by a plurality of electrode blocks 31, the solution is mixed by a channel between the two chambers, then enters the next chamber and is split continuously, the solution is split-mixed for a plurality of times and finally flows out of the liquid outlet, the electrolysis efficiency and the electrolysis uniformity of the solution are improved, and the yields of cathode products and anode products are further improved.

As shown in connection with fig. 1 and 4, in one embodiment of the present utility model, the plurality of electrode blocks 31 of each group have a pitch of 1-10mm.

In this embodiment, the distance between the plurality of electrode blocks 31 in each chamber is designed to be 1-10mm, and when the distance between the electrode blocks 31 is too large, that is, the number of electrode blocks 31 that can be provided on the electrode plate 30 is small, the improvement of the electrolysis efficiency and the time-space efficiency of the electrochemical reactor 1 with respect to the flat plate electrode is not obvious. When the distance between the electrode blocks 31 is too small, the density between the electrode blocks 31 is high, which also affects the fluidity of the solution and the ions after electrolysis. Meanwhile, when the distance between the electrode blocks 31 is short, the electrode plates 30 are difficult to process, and the production cost is high. Meanwhile, after the electrode plate 30 is attached to the opening at one end of the electrode support 20, the height of the electrode block 31 embedded in the cavity 21a needs to be enough not to exceed the opening at the other end of the electrode support 20, so as to avoid interference between the electrode block 31 and attachment between the ion exchange membrane 10 and the electrode support 20.

In one embodiment of the present utility model, a sealing ring is provided between the ion exchange membrane 10 and the electrode holder 20.

In this embodiment, by providing a seal ring between the ion exchange membrane 10 and the electrode holder 20, the sealing effect between the ion exchange membrane 10 and the electrode holder 20 is further improved, and the electrolytic solution is prevented from flowing out of the cathode chamber or the anode chamber, thereby affecting the electrochemical reaction. Meanwhile, the ion exchange membrane 10 and the electrode support 20 can be connected through threads, so that the sealing ring is in an extrusion state, and the tightness between the ion exchange membrane 10 and the electrode support 20 is further improved.

As shown in fig. 1 and 3, in an embodiment of the present utility model, a side of the electrode holder 20 facing the electrode plate 30 is recessed to form a mounting groove 25a, the electrode plate 30 is disposed in the mounting groove 25a, and a surface of the electrode plate 30 facing away from the electrode block 31 is flush with a surface of the electrode holder 20.

In the present embodiment, the shape of the mounting groove 25a is the same as the outer peripheral shape of the electrode plate 30, and the depth of the recess is the same as the thickness of the electrode plate 30. Meanwhile, the mounting groove 25a is formed around the cavity 21a, so that when the electrode plate 30 and the electrode support 20 are assembled, the electrode block 31 is embedded in the cavity 21a, meanwhile, the periphery of the electrode plate 30 is abutted against the mounting groove 25a, and the surface of the electrode plate 30 opposite to the electrode block 31 is flush with the surface of the electrode support 20, so that the assembled shape is regular, and the current collector 40 can be conveniently mounted on the electrode support 20 when the current collector 40 is attached to the electrode plate 30 and the electrode support 20, and at the moment, the current collector 40 is attached to the surface of the electrode plate 30, so that the power supply to the electrode plate 30 is realized, and the convenience in assembling the electrochemical reactor 1 and supplying power to the electrode plate 30 by the current collector 40 is improved.

In one embodiment of the present utility model, the material of the electrode block 31 is platinum;

alternatively, the surface of the electrode block 31 is provided with an electrode material.

In this embodiment, the electrode block 31 may be used as an electrode material, which may be platinum, nickel, graphite, or the like, so that the electrode block 31 may function as a cathode or an anode and as an electrolytic solution.

Alternatively, the electrode block 31 may be made of a common metal material, and a layer of electrode material is coated and electroplated on the electrode block 31 to realize the effect of the electrolytic solution, and the electrode block 31 may be made of a material easy to form and process, so as to improve the convenience of processing. Electrode materials can be fixedly supported and sleeved on the outer side of the electrode block 31, the electrode block 31 plays a supporting role, for example, a net-shaped electrode material is arranged on the outer side of the electrode block 31 so as to play a role of an electrolytic solution, and the electrode block 31 of the scheme can use materials easy to form and process, so that the convenience of processing is improved. Meanwhile, the mesh electrode material is sleeved on the surface of the electrode block 31, so that the complexity of the processing technology of the electrode plate 30 is reduced relative to electroplating. In addition, when the electrode block 31 needs to be replaced after the electrochemical reactor 1 is used for a long time, or the current electrode material has a common effect on solution electrolysis, and when the electrode material needs to be replaced, the electrode material which is fixedly or fixedly arranged can be directly taken out to replace a new electrode material, so that the convenience of replacing the electrode material is greatly improved, and the cost for replacing the electrode material is reduced. Meanwhile, the sleeved electrode material can be a net electrode material, and the net electrode material further improves the specific electrode area so as to improve the electrolysis efficiency of the electrochemical reactor 1.

With continued reference to fig. 1 and 3, in an embodiment of the present utility model, through holes 22a are formed on the end surfaces of the two ends of the electrode holder 20, and the through holes 22a are in communication with the cavity 21a.

In this embodiment, through holes 22a formed at two ends of the electrode support 20 are communicated with the cavity 21a, that is, the through holes 22a are communicated with the cathode chamber and the anode chamber, the through hole 22a at one end is a liquid inlet, the through hole 22a at the other end is a liquid outlet, the solution can be injected into the cathode chamber or the anode chamber through the liquid inlet, and after the electrolysis is completed, the electrolyzed product is discharged from the liquid outlet. By providing the through holes 22a at both ends of the electrode holder 20, the convenience of operation of the electrochemical reactor 1 is improved.

Referring to fig. 1 and 2, in an embodiment of the present utility model, a current collector 40, an insulating plate 50 and a plate frame fixing plate 60 are sequentially disposed on one side of each of the electrode plates 30 opposite to the electrode block 31, and a plurality of connection holes 70a corresponding up and down are formed on the surfaces of the ion exchange membrane 10, the electrode support 20, the current collector 40, the insulating plate 50 and the plate frame fixing plate 60, and the connection members sequentially pass through the connection holes 70a to fixedly mount the electrochemical reactor 1.

In the present embodiment, the current collector 40 is used to supply power to the electrode plates 30 such that the two electrode plates 30 have different polarities, and one side of the current collector 40 is convexly provided with a connection site for connection with an external power source. The current collector 40 may have a flat shape so as to be conveniently attached to the electrode plate 30, thereby increasing the contact area between the electrode plate 30 and the current collector 40 and further improving the reliability of the electrochemical reactor 1. The outer side of the current collector 40 is sequentially provided with an insulating plate 50 and a plate frame fixing plate 60, and the insulating plate 50 is arranged between the plate frame fixing plate 60 and the current collector 40 to play a role of insulation. The plate frame fixing plate 60 may be metal to increase the structural strength of the electrochemical reactor 1. Connection holes 70a opened at the surfaces of the ion exchange membrane 10, the electrode holder 20, the current collector 40, the insulating plate 50 and the plate frame fixing plate 60 are used to fixedly connect the ion exchange membrane 10, the electrode holder 20, the current collector 40, the insulating plate 50 and the plate frame fixing plate 60 to assemble and form the electrochemical reactor 1. For example, a plurality of insulating sleeves may be provided to sequentially penetrate through the connecting holes 70a corresponding to the upper and lower sides, and screws may be inserted through the insulating sleeves to fix the ion exchange membrane 10, the electrode holder 20, the current collector 40, the insulating plate 50, and the plate frame fixing plate 60, and the structural strength of the assembled electrochemical reactor 1 may be improved by providing a plurality of connecting holes 70a corresponding to the upper and lower sides.

The foregoing description is only of the preferred embodiments of the present utility model, and is not intended to limit the scope of the utility model, but rather, the equivalent structural changes made by the description of the present utility model and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims (10)

1. An electrochemical reactor, characterized in that it comprises:

two electrode plates, wherein one side surface of each electrode plate is convexly provided with at least one electrode block;

two electrode supports, each of which is provided with a cavity with two openings at two ends, each electrode plate cover is arranged at one opening of one electrode support, and the electrode block is arranged towards the cavity; and

the ion exchange membrane is arranged between the two electrode brackets, and the ion exchange membrane is attached to the two openings of the two electrode brackets, which deviate from the two electrode plates.

2. The electrochemical reactor of claim 1 wherein a plurality of said electrode blocks are provided, a plurality of said electrode blocks being disposed in an array on one side of said electrode plate.

3. The electrochemical reactor of claim 2, wherein the electrode block has a rectangular cross-sectional shape, the cavity wall of the cavity is provided with a plurality of serrations, the plurality of serrations are arranged at intervals along the circumferential direction of the cavity wall, and the electrode block adjacent to the cavity wall is arranged at intervals with tooth grooves of the serrations.

4. The electrochemical reactor of claim 1, wherein said cavity comprises a plurality of interconnected chambers, said plurality of chambers being spaced apart along the direction in which said electrode plates extend, said plurality of electrode blocks being divided into a plurality of groups, each of said chambers being provided with a group of said electrode blocks.

5. The electrochemical reactor of claim 4 wherein a plurality of said electrode blocks of each set are spaced apart by a distance of 1-10mm.

6. The electrochemical reactor of any one of claims 1-5, wherein a seal ring is disposed between the ion exchange membrane and the electrode support.

7. The electrochemical reactor of any one of claims 1-5, wherein a side of said electrode support facing said electrode plate is recessed to form a mounting groove, said electrode plate is disposed in said mounting groove, and a surface of said electrode plate facing away from said electrode block is flush with a surface of said electrode support.

8. The electrochemical reactor of any one of claims 1-5, wherein the material of the electrode block is platinum;

or, the surface of the electrode block is provided with electrode materials.

9. The electrochemical reactor according to any one of claims 1 to 5, wherein through holes are opened on end surfaces of both ends of the electrode holder, the through holes being in communication with the cavity.

10. The electrochemical reactor according to any one of claims 1 to 5, wherein a current collector, an insulating plate and a plate frame fixing plate are sequentially provided on one side of each of the electrode plates opposite to the electrode block, a plurality of connection holes corresponding up and down are provided on the surfaces of the ion exchange membrane, the electrode holder, the current collector, the insulating plate and the plate frame fixing plate, and a connecting member sequentially penetrates through the connection holes to fixedly mount the electrochemical reactor.