Purifying device for hydrogen production by alkaline electrolyzed water
By designing a purification device for alkaline electrolysis of water for hydrogen production including a baffle chamber, a baffle, a catalytic reaction chamber and an alkali removal catalytic component, the solution is to remove alkali mist and water mist from hydrogen during the process of alkaline electrolysis of water for hydrogen production. The problem of incompleteness is eliminated, and efficient purification of hydrogen and reduction of workload are achieved.
Patent Information
- Application Number
- CN202420144142.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-19
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-01-19
AI Technical Summary
During the process of alkaline electrolysis of hydrogen production, the scrubber can only partially remove alkaline mist and water mist in the hydrogen, resulting in an increase in the workload of the deoxygenation and drying system, affecting the purity of the hydrogen.
A purification device for hydrogen production by alkaline electrolysis of water is designed, which includes an inner cylinder and an outer cylinder. The inner cylinder is provided with a baffle chamber and a baffle plate, and the outer cylinder is provided with a catalytic reaction chamber and an alkali-removing catalytic component. Alkali treatment improves hydrogen purity.
Through multiple alkali removal treatments, the purity of hydrogen has been significantly improved, the workload of subsequent deoxidation and drying links has been reduced, and the purification effect of hydrogen has been improved.
Smart Images
Figure CN222374783U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of hydrogen purification, in particular to a purification device for producing hydrogen by alkaline water electrolysis. Background Art
[0002] In order to reduce the emission of carbon dioxide or other greenhouse gases, "carbon reduction and hydrogenation" has become a global energy development trend, and hydrogen will be a clean energy in the 21st century and an important way to achieve the "dual carbon" strategy.
[0003] In the field of hydrogen production by alkaline water electrolysis, the gas-liquid mixture coming out of the electrolyzer is generally heat exchanged, and then the gas-liquid separation and cooling are performed. The hydrogen after gas-liquid separation and cooling is washed by a scrubber, and the washed hydrogen is separated by a droplet catcher and a gas-liquid separator and then enters a deoxygenation and drying system. However, the washing effect of hydrogen only by a scrubber is not ideal, and it is easy for alkaline mist and water mist to enter the deoxygenation and drying system, increasing its workload, and also affecting the purity of the hydrogen product obtained by the deoxygenation and drying system.
[0004] Therefore, a purification device for producing hydrogen by alkaline water electrolysis is needed to at least partially solve the above problems. Utility Model Content
[0005] A series of simplified concepts are introduced in the utility model content section, which will be further described in detail in the detailed implementation section. The utility model content section of the utility model does not mean to attempt to define the key features and essential technical features of the technical solution claimed for protection, nor does it mean to attempt to determine the scope of protection of the technical solution claimed for protection.
[0006] In order to at least partially solve the above problems, the utility model provides a purification device for producing hydrogen by alkaline water electrolysis, comprising:
[0007] An inner cylinder, wherein a baffle cavity is disposed in the inner cylinder, a baffle plate is disposed in the baffle cavity, and the inner cylinder is provided with a gas inlet communicated with the baffle cavity;
[0008] An outer cylinder is sleeved with the inner cylinder, a catalytic reaction chamber is arranged between the outer cylinder and the inner cylinder, a dealkali catalytic component is arranged in the catalytic reaction chamber, the catalytic reaction chamber is communicated with the deflection chamber, and the outer cylinder is provided with a gas outlet communicated with the catalytic reaction chamber.
[0009] According to the purification device for producing hydrogen by alkaline water electrolysis of the utility model, the crude hydrogen containing alkaline mist and water mist can be subjected to multiple de-alkali treatments, thereby improving the de-alkali efficiency of the purification device and reducing the workload of subsequent deoxidation and drying steps.
[0010] Optionally, a plurality of the baffles are arranged at intervals along the flow direction of the gas, the inner tube is further provided with a guide outlet respectively connected to the baffle chamber and the catalytic reaction chamber, and the gas inlet and the guide outlet are arranged relatively along the flow direction of the gas.
[0011] Optionally, the outer cylinder is coaxially sleeved with the inner cylinder, the central axis of the outer cylinder and the central axis of the inner cylinder are located in the same vertical plane, a plurality of baffles are arranged at intervals along the height direction of the inner cylinder, and the gas inlet is located above the outlet.
[0012] Optionally, the bottom of the inner tube is provided with the guide outlet;
[0013] The alkali removal catalytic component comprises:
[0014] A filter plate, wherein the filter plate is provided with a mounting opening, and the inner cylinder passes through the mounting opening from top to bottom and is sleeved with the filter plate;
[0015] an alkali removal catalyst layer, the alkali removal catalyst layer is laid on the filter plate,
[0016] Wherein, the outlet is located below the alkali removal catalyst layer.
[0017] Optionally, the filter plate is coaxially sleeved with the outer cylinder, the outer peripheral edge of the filter plate abuts against the inner wall of the outer cylinder, and the outer cylinder is also provided with a catalyst discharge port connected to the catalytic reaction chamber, and the catalyst discharge port is located above the filter plate.
[0018] Optionally, the outer cylinder is further provided with a catalyst feeding port connected to the catalytic reaction chamber, the catalyst feeding port is located above the filter plate, and the height of the catalyst feeding port is higher than the height of the catalyst unloading port.
[0019] Optionally, the baffle is located below the gas inlet, and the baffle includes a plurality of vertical plates spaced apart in a horizontal direction, with a gap between two of the vertical plates for constructing a gas channel.
[0020] Optionally, the cross-section of the vertical plate is corrugated, and the extension direction of the corrugations of the vertical plate is the same as the flow direction of the gas.
[0021] Optionally, a coil is sleeved on the outer circumference of the inner tube, the coil is located above the dealkali catalytic component, one end of the coil is located on the outer circumference of the outer tube and forms the gas outlet, and the coil is provided with a plurality of air holes so that the gas flows into the coil through the air holes and is discharged through the gas outlet.
[0022] Optionally, the purification device for producing hydrogen through alkaline water electrolysis further comprises a mounting seat, which is arranged at the bottom of the outer cylinder and connected to the outer cylinder for supporting the outer cylinder. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] The following drawings of the present invention are used as a part of the present invention for understanding the present invention. The drawings show the embodiments of the present invention and their descriptions, and are used to explain the principle of the present invention.
[0024] In the attached figure:
[0025] Figure 1 It is a structural schematic diagram of a purification device for producing hydrogen by alkaline water electrolysis according to the utility model;
[0026] Figure 2 It is a structural schematic diagram of the coil according to the utility model;
[0027] Figure 3 It is a side view of the alkali removal catalytic component according to the utility model;
[0028] Figure 4 It is a top view of the alkali removal catalytic component according to the utility model;
[0029] Figure 5 It is a structural schematic diagram of the baffle according to the utility model.
[0030] Description of reference numerals:
[0031] 100: Purification device 110: Inner cylinder 111: Baffle chamber
[0032] 112: Gas inlet 113: Gas outlet 120: Outer tube
[0033] 121: Catalytic reaction chamber 122: Catalyst feeding port 123: Catalyst unloading port
[0034] 130: baffle 131: vertical plate 1311: first bending portion
[0035] 1312: second bend 132: gas channel 140: alkali removal catalytic component
[0036] 141: Filter plate 1411: First filter 1412: Second filter
[0037] 1413: Mounting port 1414: Through hole 142: Alkali removal catalyst layer
[0038] 150: Coil 151: Gas outlet 152: Air hole
[0039] 160: Mounting seat DETAILED DESCRIPTION
[0040] In the following description, a large number of specific details are given to provide a more thorough understanding of the utility model. However, it is obvious to those skilled in the art that the utility model can be implemented without one or more of these details. In other examples, in order to avoid confusion with the utility model, some technical features known in the art are not described.
[0041] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the utility model. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of the features, wholes, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or combinations thereof.
[0042] Ordinal numbers such as "first" and "second" cited in the present invention are merely identifiers and do not have any other meaning, such as a specific order. Moreover, for example, the term "first component" itself does not imply the existence of a "second component", and the term "second component" itself does not imply the existence of a "first component". It should be noted that the terms "upper", "lower", "front", "back", "left", "right", "inner", "outer" and similar expressions used in this document are for illustrative purposes only and are not limiting.
[0043] Now, exemplary embodiments according to the present invention will be described in more detail with reference to the accompanying drawings.
[0044] The utility model provides a purification device 100 for producing hydrogen by alkaline water electrolysis. For the specific structure of the purification device 100 for producing hydrogen by alkaline water electrolysis, please refer to Figure 1, which includes an inner cylinder 110 and an outer cylinder 120, wherein a baffle chamber 111 is provided in the inner cylinder 110, a baffle plate 130 is provided in the baffle chamber 111, and a gas inlet 112 connected to the baffle chamber 111 is provided in the inner cylinder 110. When the crude hydrogen containing alkali mist and water mist passes into the baffle chamber 111 through the gas inlet 112, the crude hydrogen directly contacts the baffle plate 130, so that the alkali mist and water mist are liquefied to form droplets, thereby improving the heat exchange efficiency and achieving preliminary De-alkali; the outer cylinder 120 is sleeved with the inner cylinder 110, a catalytic reaction chamber 121 is provided between the outer cylinder 120 and the inner cylinder 110, a de-alkali catalytic component 140 is provided in the catalytic reaction chamber 121, the catalytic reaction chamber 121 is communicated with the baffle chamber 111, the outer cylinder 120 is provided with a gas outlet 151 communicated with the catalytic reaction chamber 121, the crude hydrogen containing alkali mist and water mist passes through the baffle plate 130 and the de-alkali catalytic component 140 in sequence, so as to further enhance the de-alkali effect.
[0045] According to the purification device 100 for producing hydrogen by alkaline water electrolysis of the utility model, the crude hydrogen containing alkali mist and water mist is passed through the baffle 130 and the de-alkali catalytic component 140 in sequence, and the crude hydrogen containing alkali mist and water mist can be subjected to multiple de-alkali treatments, thereby improving the de-alkali efficiency of the purification device 100, reducing the workload of subsequent deoxidation and drying steps, and improving the purity of hydrogen.
[0046] like Figure 1 and Figure 5 As shown, a plurality of baffles 130 are arranged at intervals along the flow direction of the gas, and the inner tube 110 is also provided with a lead-out port 113 respectively connected to the baffle chamber 111 and the catalytic reaction chamber 121, and the gas inlet 112 and the lead-out port 113 are arranged relatively to each other along the flow direction of the gas, so that the crude hydrogen containing alkaline mist and water mist flows into the baffle chamber 111 through the gas inlet 112, and passes through a plurality of baffles 130 in sequence, thereby avoiding the occurrence of a flow blind spot and significantly improving the heat exchange effect.
[0047] like Figures 1 to 5 As shown, the outer cylinder 120 is coaxially sleeved with the inner cylinder 110, the central axis of the outer cylinder 120 and the central axis of the inner cylinder 110 are located in the same vertical plane, and a plurality of baffles 130 are arranged at intervals along the height direction of the inner cylinder 110, and the gas inlet 112 is located above the outlet 113, that is, the crude hydrogen containing alkaline mist and water mist passes through the plurality of baffles 130 from top to bottom in sequence, so that the crude hydrogen and the plurality of baffles 130 are heat exchanged in sequence, and the heat exchange efficiency is ensured, so that the alkaline mist and water mist contained in the crude hydrogen are liquefied to form droplets, thereby realizing preliminary de-alkali.
[0048] like Figure 1As shown, the gas inlet 112 is arranged on the circumferential side of the inner cylinder 110, and a plurality of baffles 130 are arranged at intervals along the height direction of the inner cylinder 110. The gas inlet 112 is located above all the baffles 130, and the outlet 113 is provided at the bottom of the inner cylinder 110. The gas inlet 112 and the outlet 113 are arranged up and down, which not only prolongs the travel of the gas in the baffle chamber 111 and improves the heat exchange efficiency between the gas and the baffles 130, but also makes the gas have good fluidity, thereby ensuring that the crude hydrogen gas that has been initially de-alkalied can smoothly flow into the catalytic reaction chamber 121 to achieve secondary de-alkali.
[0049] For the specific structure of the alkali removal catalytic component 140, please refer to Figure 1 , Figure 3 and Figure 4 , which includes a filter plate 141 and a de-alkali catalyst layer 142, wherein the filter plate 141 is used to support the de-alkali catalyst layer 142, and the filter plate 141 is provided with a mounting port 1413, and the inner cylinder 110 passes through the mounting port 1413 from top to bottom and is sleeved with the filter plate 141; the de-alkali catalyst layer 142 is laid on the filter plate 141, and the outlet 113 is located below the de-alkali catalyst layer 142, so that the crude hydrogen that is initially de-alkalied flows into the catalytic reaction chamber 121 from the outlet 113, and then passes through the de-alkali catalyst layer 142 from bottom to top for secondary de-alkali, thereby enhancing the de-alkali effect, reducing the workload of subsequent deoxidation and drying links, and improving the purity of hydrogen.
[0050] like Figure 1 As shown, the filter plate 141 is coaxially sleeved with the outer cylinder 120, and the outer peripheral edge of the filter plate 141 abuts against the inner wall of the outer cylinder 120. The outer cylinder 120 is also provided with a catalyst discharge port 123 connected to the catalytic reaction chamber 121. The catalyst discharge port 123 is located above the filter plate 141, which is convenient for regularly cleaning the de-alkali catalyst layer 142 in the catalytic reaction chamber 121 that has lost its catalytic activity or has reduced catalytic activity, so as to replace it with a new de-alkali catalyst, ensure that the de-alkali catalyst layer 142 has a stable catalytic activity, thereby ensuring the de-alkali effect of the purification device 100.
[0051] like Figure 3 and Figure 4 As shown, the filter plate 141 is provided with through holes 1414, and a plurality of through holes 1414 are evenly arranged on the filter plate 141, for allowing the crude hydrogen to pass through and fully contact with the alkali removal catalyst layer 142, so that the alkali mist and water mist contained in the crude hydrogen can be completely removed.
[0052] For example, Figure 3 and Figure 4As shown, the filter plate 141 includes a first filter 1411 and a second filter 1412, wherein the first filter 1411 and the second filter 1412 are arranged in a vertically contacting manner, and a mounting port 1413 for the inner cylinder 110 to pass through is arranged in the middle of the first filter 1411 and the second filter 1412, and the de-alkali catalyst layer 142 is laid on the first filter 1411, and the first filter 1411 and the second filter 1412 are both provided with a plurality of through holes 1414, and the crude hydrogen after preliminary de-alkali passes through the second filter 1412 and the first filter 1411 in sequence, and reacts catalytically with the de-alkali catalyst of the de-alkali catalyst layer 142, so as to realize secondary de-alkali, and improve the de-alkali efficiency of the purification device 100.
[0053] like Figure 1 As shown, the outer cylinder 120 is also provided with a catalyst feed port 122 connected to the catalytic reaction chamber 121. The catalyst feed port 122 is located above the filter plate 141. In order to ensure that the alkaline mist and water mist contained in the crude hydrogen can be completely removed, it is necessary to regularly clean the de-alkali catalyst layer 142 in the catalytic reaction chamber 121 that has lost its catalytic activity or has reduced catalytic activity, and it is also necessary to regularly add a de-alkali catalyst into the catalytic reaction chamber 121 so that a de-alkali catalyst layer 142 with stable catalytic activity is formed on the surface of the filter plate 141.
[0054] The height of the catalyst feeding port 122 is higher than the height of the catalyst unloading port 123. Figure 1 As shown, the top of the outer cylinder 120 is provided with the catalyst feeding port 122, and the circumferential side of the outer cylinder 120 is provided with the catalyst unloading port 123, and the catalyst unloading port 123 is close to the bottom of the outer cylinder 120. The de-alkali catalyst is fed into the catalytic reaction chamber 121 through the catalyst feeding port 122 at the top of the outer cylinder 120, so that the de-alkali catalyst can be evenly attached to the surface of the filter plate 141, avoiding the occurrence of blind spots uncovered by the de-alkali catalyst layer 142 and affecting the de-alkali effect of the crude hydrogen. The catalyst unloading port 123 is located below the catalyst feeding port 122, which is more convenient to operate and is conducive to regular cleaning of the de-alkali catalyst layer 142 in the catalytic reaction chamber 121 that has lost its catalytic activity or has reduced catalytic activity.
[0055] After using for a period of time, it is necessary to clean the de-alkali catalyst layer 142 in the catalytic reaction chamber 121 that has lost its catalytic activity or has reduced its catalytic activity and replace it with a new de-alkali catalyst. When replacing the new de-alkali catalyst layer 142, nitrogen can be blown into the baffle chamber 111. By blowing the surface of the baffle 130 with nitrogen, the residual substances on the surface of the baffle 130 can be effectively removed, so that the baffle 130 has a good baffle effect, thereby ensuring the effect of preliminary de-alkali.
[0056] The plurality of baffles 130 are all located below the gas inlet 112, so that the crude hydrogen containing alkali mist and water mist passes through the plurality of baffles 130 from top to bottom in sequence. For the specific structure of the baffles 130, please refer to Figure 1 and Figure 5 It includes a plurality of vertical plates 131 spaced apart in the horizontal direction, and a gap for gas to pass through is provided between two vertical plates 131, which is used to construct a gas channel 132. When crude hydrogen containing alkali mist and water mist passes through the gas channel 132, the crude hydrogen exchanges heat with the vertical plates 131 on both sides to liquefy the alkali mist and water mist to form droplets, and the plurality of vertical plates 131 spaced apart in the horizontal direction form a plurality of gas channels 132, which can effectively adjust the flow rate and flow direction of the gas, thereby improving the heat exchange efficiency.
[0057] like Figure 1 and Figure 5 As shown, the cross-section of the vertical plate 131 is corrugated, and the extension direction of the corrugation of the vertical plate 131 is the same as the flow direction of the gas, that is, the corrugation of the vertical plate 131 extends along the height direction of the inner tube 110. In the process of the crude hydrogen flowing from top to bottom, the crude hydrogen collides with the surface of the vertical plate 131 for many times, which promotes the probability of alkaline mist and water mist contacting the vertical plate 131 and enhances the heat exchange effect.
[0058] like Figure 1 and Figure 5 As shown, as an optional embodiment, two adjacent vertical plates 131 construct gas channels 132 with equal spacing. In the process of crude hydrogen flowing from top to bottom, the flow direction of the crude hydrogen changes multiple times, increasing the number of collisions between the crude hydrogen and the surface of the vertical plate 131, so that the alkaline mist and water mist are quickly liquefied.
[0059] As an embodiment not shown, two adjacent vertical plates 131 construct gas channels 132 with unequal spacings, and crude hydrogen containing alkaline mist and water mist flows through the gas channels 132. As the spacings of the gas channels 132 continue to change, the crude hydrogen is always in a state of acceleration or deceleration in the gas channels 132, which promotes the probability of the alkaline mist and water mist contacting the vertical plates 131, thereby effectively improving the effect of preliminary de-alkali.
[0060] For the specific structure of the vertical plate 131, please refer to Figure 1 and Figure 5, which includes a first bending portion 1311 and a second bending portion 1312, wherein the first bending portion 1311 and the second bending portion 1312 are alternately arranged in sequence along the flow direction of the gas, that is, the first bending portion 1311 and the second bending portion 1312 are alternately arranged in sequence along the height direction of the inner cylinder 110, so as to construct a corrugated vertical plate 131. Since the first bending portion 1311 and the second bending portion 1312 are alternately arranged in sequence along the height direction of the inner cylinder 110, when the crude hydrogen containing alkali mist and water mist passes through the gas channel 132, the alkali mist and the water mist can collide with the vertical plate 131 multiple times.
[0061] like Figure 1 and Figure 2 As shown, a coil 150 is sleeved on the outer circumference of the inner tube 110, and the coil 150 is located above the de-alkali catalytic component 140. One end of the coil 150 is located on the outer circumference of the outer tube 120 and is formed with a gas outlet 151. The coil 150 is provided with a plurality of air holes 152, so that the gas flows into the coil 150 through the air holes 152 and is discharged through the gas outlet 151. The crude hydrogen gas subjected to multiple de-alkali treatments flows into the coil 150 through the air holes 152 and is discharged through the gas outlet 151 for subsequent deoxidation and drying steps.
[0062] like Figure 1 As shown, the top of the inner cylinder 110 is connected to the inner circumferential wall of the top of the outer cylinder 120. The inner cylinder 110 is a cylindrical cylinder with a closed top and an open bottom. By way of example, the inner cylinder 110 can be integrally connected to the outer cylinder 120. The connection method between the inner cylinder 110 and the outer cylinder 120 is simple and suitable for industrial mass production. The inner cylinder 110 can also be welded and fixed to the outer cylinder 120, which is simpler to operate and more firmly connected to the outer cylinder 120. The inner cylinder 110 can also be fixedly connected to the outer cylinder 120 in other ways.
[0063] like Figure 1 As shown, the purification device 100 for producing hydrogen by alkaline water electrolysis also includes a mounting seat 160, which is arranged at the bottom of the outer cylinder 120 and connected to the outer cylinder 120, and is used to support the outer cylinder 120, wherein the bottom of the mounting seat 160 is a plane directly in contact with the ground, and the top contour of the mounting seat 160 is adapted to the bottom contour of the outer cylinder 120, thereby ensuring the firmness of the connection structure between the mounting seat 160 and the outer cylinder 120, preventing the outer cylinder 120 or the inner cylinder 110 from shaking, and improving the stability and reliability of the entire purification device 100.
[0064] Exemplarily, the mounting seat 160 can be integrally connected to the outer cylinder 120, and the connection method between the mounting seat 160 and the outer cylinder 120 is simple, which is suitable for industrial production and application; the mounting seat 160 can also be welded and fixed to the outer cylinder 120, which is simpler to operate and the connection between the mounting seat 160 and the outer cylinder 120 is more secure; the mounting seat 160 can also be fixedly connected to the outer cylinder 120 in other ways.
[0065] The processes and steps described in all the above preferred embodiments are only examples. Unless adverse effects occur, various processing operations can be performed in a sequence different from the sequence of the above processes. The sequence of steps in the above processes can also be increased, merged or deleted according to actual needs.
[0066] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art of the present invention. The terms used herein are only for describing specific implementation purposes and are not intended to limit the present invention. The features described herein in one embodiment may be applied to another embodiment alone or in combination with other features, unless the feature is not applicable or otherwise specified in the other embodiment.
[0067] The present invention has been described through the above-mentioned embodiments, but it should be understood that the above-mentioned embodiments are only for the purpose of example and explanation, and the present invention is not limited to the above-mentioned embodiments. According to the teachings of the present invention, more variations and modifications can be made, and these variations and modifications all fall within the scope of protection required by the present invention.
Claims
1. A purification device for producing hydrogen by alkaline water electrolysis, characterized in that: include: An inner cylinder, wherein a baffle cavity is disposed in the inner cylinder, a baffle plate is disposed in the baffle cavity, and the inner cylinder is provided with a gas inlet communicated with the baffle cavity; An outer cylinder is sleeved with the inner cylinder, a catalytic reaction chamber is arranged between the outer cylinder and the inner cylinder, a dealkali catalytic component is arranged in the catalytic reaction chamber, the catalytic reaction chamber is communicated with the deflection chamber, and the outer cylinder is provided with a gas outlet communicated with the catalytic reaction chamber.
2. The purification device for producing hydrogen by alkaline water electrolysis according to claim 1, characterized in that: The plurality of baffles are arranged at intervals along the flow direction of the gas, the inner tube is further provided with a guide outlet respectively connected to the baffle chamber and the catalytic reaction chamber, and the gas inlet and the guide outlet are arranged relatively along the flow direction of the gas.
3. The purification device for producing hydrogen by alkaline water electrolysis according to claim 2, characterized in that: The outer cylinder is coaxially sleeved with the inner cylinder, the central axis of the outer cylinder and the central axis of the inner cylinder are located in the same vertical plane, a plurality of baffles are arranged at intervals along the height direction of the inner cylinder, and the gas inlet is located above the outlet.
4. The purification device for producing hydrogen by alkaline water electrolysis according to claim 3, characterized in that: The bottom of the inner tube is provided with the guide outlet; The alkali removal catalytic component comprises: A filter plate, wherein the filter plate is provided with a mounting opening, and the inner cylinder passes through the mounting opening from top to bottom and is sleeved with the filter plate; an alkali removal catalyst layer, the alkali removal catalyst layer is laid on the filter plate, Wherein, the outlet is located below the alkali removal catalyst layer.
5. The purification device for producing hydrogen by alkaline water electrolysis according to claim 4, characterized in that: The filter plate is coaxially sleeved with the outer cylinder, and the outer peripheral edge of the filter plate abuts against the inner wall of the outer cylinder. The outer cylinder is also provided with a catalyst discharge port connected to the catalytic reaction chamber, and the catalyst discharge port is located above the filter plate.
6. The purification device for producing hydrogen by alkaline water electrolysis according to claim 5, characterized in that: The outer cylinder is also provided with a catalyst feeding port connected to the catalytic reaction chamber, the catalyst feeding port is located above the filter plate, and the height of the catalyst feeding port is higher than the height of the catalyst unloading port.
7. The purification device for producing hydrogen by alkaline water electrolysis according to any one of claims 1 to 6, characterized in that: The baffle is located below the gas inlet, and includes a plurality of vertical plates arranged at intervals in a horizontal direction, with a gap between two of the vertical plates for constructing a gas channel.
8. The purification device for producing hydrogen by alkaline water electrolysis according to claim 7, characterized in that: The cross section of the vertical plate is corrugated, and the extending direction of the corrugations of the vertical plate is the same as the flow direction of the gas.
9. The purification device for producing hydrogen by alkaline water electrolysis according to any one of claims 1 to 6, characterized in that: A coil is sleeved on the outer circumference of the inner tube, and the coil is located above the dealkali catalytic component. One end of the coil is located on the outer circumference of the outer tube and forms the gas outlet. The coil is provided with a plurality of air holes so that the gas flows into the coil through the air holes and is discharged through the gas outlet.
10. The purification device for producing hydrogen by alkaline water electrolysis according to any one of claims 1 to 6, characterized in that: The purification device for producing hydrogen by alkaline water electrolysis also includes a mounting seat, which is arranged at the bottom of the outer cylinder and connected to the outer cylinder for supporting the outer cylinder.