Installation method of high-molecular polymer membrane assembly and seawater coupling electrolyzed water hydrogen production device

Abstract

The invention provides an installation method of a high-molecular polymer membrane assembly and a seawater coupling electrolyzed water hydrogen production device, the installation method of the high-molecular polymer membrane assembly is characterized in that the high-molecular polymer membrane assembly is installed on a ceramic filter column, and the installation mode comprises the following steps: S1, at least coating three annular glue layers along the height direction of the ceramic filter column; s2, an anion exchange membrane is adhered between every two annular adhesive layers, and the anion exchange membrane accounts for 1 / 3-1 / 2 of the total area of the annular adhesive layers; the ceramic filter column has the beneficial effects that the ceramic surface of the ceramic filter column can be fully filtered and utilized to the greatest extent while the inner layer and the outer layer of the two membranes are crossed, adhered and fixed, and the filter effect cannot be influenced by the shielding of more adhesive layers.

Description

Technical Field

[0001] The present invention relates to the technical field of seawater-coupled water electrolysis hydrogen production, and in particular to a method for installing a polymer membrane assembly and a seawater-coupled water electrolysis hydrogen production device. Background Art

[0002] In the electrolysis of water to produce hydrogen, ultrapure water is used exclusively, obtained through freshwater reprocessing. However, the scarcity of freshwater resources also poses an unavoidable challenge to domestic and ecological water needs. Therefore, given the abundance of seawater resources, utilizing seawater electrolysis to produce hydrogen to mitigate freshwater depletion has become a strategic direction for future large-scale hydrogen production. As one of Earth's most abundant resources, seawater can serve as a water source for electrolysis, enabling efficient seawater hydrogen production. Furthermore, abundant offshore renewable energy sources, such as wind and solar energy, can be used as a source of electricity for seawater electrolysis, enabling electrochemical storage of renewable energy, making it highly attractive. However, seawater contains a large number of impurities such as calcium, magnesium, and chloride. Direct seawater electrolysis for hydrogen production can contaminate the electrolyzer with precipitates formed by various metal ions. Furthermore, the high amount of chloride ions in seawater can directly poison the catalytic electrodes in the electrolyzer, significantly reducing the electrolysis efficiency and shortening the cell's lifespan. Currently, hydrogen production from seawater requires desalination to meet electrolysis requirements, followed by further electrolysis of the desalinated water. This undoubtedly increases costs and shortens the lifespan of desalination equipment. Consequently, numerous studies have been conducted to address the key technologies for sustainable, scalable, and low-cost hydrogen production from seawater electrolysis. However, these efforts have encountered various drawbacks.

[0003] Based on the current technical difficulties in producing hydrogen by electrolysis of seawater, it is urgent to propose a new technology for direct hydrogen production by electrolysis of seawater. Summary of the Invention

[0004] In order to overcome the above problems existing in the prior art, the present invention provides a method for installing a polymer membrane assembly and a seawater-coupled water electrolysis hydrogen production device.

[0005] In one aspect, the present invention discloses a method for installing a polymer membrane assembly. The polymer membrane assembly is installed on a ceramic filter column. The installation method includes the following steps:

[0006] S1. Apply at least three annular adhesive layers along the height direction of the ceramic filter column;

[0007] S2. An anion exchange membrane is adhered between each two annular adhesive layers, and the anion exchange membrane occupies one third to one half of the total area of the annular adhesive layers;

[0008] S3. Integrally attaching a polymer seawater phase transfer membrane along the height direction of the ceramic filter column, wherein the polymer seawater phase transfer membrane covers the anion exchange membrane of step S2 and the outer circumferential surface of the ceramic filter column;

[0009] S4. A clamp is fixed at the annular rubber layer.

[0010] On this basis, the annular adhesive layer has a thickness of 5-8 mm and is made of one of epoxy resin adhesive, polyurethane adhesive, acrylic structural adhesive, and polysulfide sealant; the clamp is a ceramic clamp, and the width of the clamp covers the width of the annular adhesive layer.

[0011] On the other hand, the present invention discloses a seawater-coupled water electrolysis hydrogen production device comprising the polymer membrane assembly, comprising a frame body, a connecting water pipe, a ceramic filter column and a polymer membrane assembly. A solid base is fixed to the bottom of the frame body, and support columns are fixedly arranged around the solid base. Roller sleeves are coaxially arranged on the support columns. A top cover is also provided on the top of the frame body. The ceramic filter column array is arranged in the frame body and is located in the encirclement formed by the support columns on the solid base. The outer surface of the ceramic filter column is covered with a polymer membrane assembly.

[0012] On this basis, the ceramic filter column is provided with a phase transfer filtration area and a water vapor flow channel located inside in sequence from the outside to the inside. The ceramic filter column is hollow with a closed bottom, and the hollow part is the water vapor flow channel.

[0013] On this basis, the water vapor flow channels of the ceramic filter column are sealed through the connecting pipe and pass through the top cover and are connected to the circulating water tank, water pump, and electrolytic cell in sequence; the water outlet of the electrolytic cell passes through the water vapor separator and the filtering mechanism in sequence and is connected to the water vapor flow channel again, and the hydrogen outlet of the electrolytic cell is connected to the hydrogen cylinder for hydrogen collection.

[0014] On this basis, the polymer membrane assembly constitutes a phase transfer filtration area for water molecules, and the polymer membrane assembly includes an anion exchange membrane and a polymer seawater phase transfer membrane. The polymer seawater phase transfer membrane is any one of an expanded polytetrafluoroethylene membrane, a polyvinylidene fluoride membrane, a thermoplastic polyurethane membrane, and a polydimethylsiloxane membrane; the anion exchange membrane is a functionalized polybenzimidazole or a functionalized polyarylpiperidine resin membrane; the thickness of all polymer membrane assemblies is 50-200 μm.

[0015] On this basis, a seawater buffer zone and a debris filtration zone are sequentially provided outside the phase-shift filtration zone of the ceramic filter column. A first outer layer cylinder is coaxially fixed outside the ceramic filter column. A water inlet is arrayed on the circumferential wall of the first outer layer cylinder. The interlayer between the first outer layer cylinder and the ceramic filter column is a seawater buffer zone. A second outer layer cylinder is coaxially provided outside the first outer layer cylinder. The second outer layer cylinder is fixedly connected to the first outer layer cylinder through a connecting disc. An array of filter holes is provided on the connecting disc. The connecting disc and the filter holes constitute the debris filtration zone.

[0016] On this basis, the aperture of the water inlet is 3-5 mm, and the aperture of the filter hole is 5-10 mm.

[0017] On this basis, the connecting water pipes are sealed and penetrate the top cover and are respectively communicated with the water vapor flow channels of the ceramic filter column.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] (1) The present invention performs preliminary filtration on seawater, i.e., removes suspended sediments in the seawater through ceramic filtration, and then uses a polymer membrane assembly to achieve phase transition of the seawater so that water molecules in the seawater can pass through, while ions such as chloride ions are effectively blocked; the water enters the electrolytic cell through a circulating water tank for electrolysis to obtain the required hydrogen;

[0020] (2) The present invention allows the water that is not completely electrolyzed at the anode outlet of the electrolytic cell to pass through a water vapor separator (water and oxygen) and a filter mechanism for separation and filtration, and then enter the water vapor flow channel of the ceramic filter column through a connecting pipe again. Since the electrolytic cell generates a large amount of heat during the electrolysis process, when this part of the water enters the water vapor flow channel again, the residual heat can be used to heat the ceramic filter column, thereby accelerating the phase change of seawater, prompting more water molecules to enter the circulating water path, and effectively improving the phase change efficiency; in addition, this part of the water with residual heat can be cooled in the circulating water tank after merging with the water molecules re-extracted from the water vapor flow channel, thereby reducing the temperature of the electrolytic cell and forming a stable thermal management balance.

[0021] (3) The present invention further designs a seawater buffer zone and a debris filtration zone on the outer layer of the ceramic filter column. The debris filtration zone can effectively remove larger debris in the seawater through the design of the filter holes, and then filters out smaller debris again through the water inlet of the first outer column before entering the seawater buffer zone for storage; the presence of the seawater buffer zone can also prevent a large amount of seawater from directly acting on the ceramic filter column, resulting in the waste heat of the incompletely electrolyzed water being unable to effectively act on the ceramic filter column and unable to obtain a high filtration efficiency;

[0022] (4) The present invention uses a combination of anion exchange membrane and polymer seawater phase transfer membrane for filtering and phase transfer of seawater. Ions such as chloride ions, which are more harmful, can be filtered through the anion exchange membrane. Then, the phase transfer membrane performs phase transfer of water molecules. Finally, the ceramic body is used to filter metal ions and anions that are easy to form precipitation.

[0023] (5) The present invention is directed to the installation of a polymer membrane assembly on the ceramic filter column. The present invention is designed to first coat an annular adhesive layer with good waterproof and alkali resistance along the ceramic filter column, and then paste an anion exchange membrane between each two adhesive layers, and finally paste the entire polymer seawater phase transfer membrane. This method can achieve cross-adhesion and fixation of the inner and outer layers of the two membranes while also ensuring that the ceramic surface of the ceramic filter column is fully utilized for filtration to the greatest extent, without more adhesive layers blocking and affecting the filtration effect. On the other hand, since the annular adhesive layer has a certain thickness, the use of double polymer membrane inner and outer layers is In the overlapping adhesion mode, the anion exchange membrane layer can form a flexible support for the phase transfer membrane on the inner layer of the phase transfer membrane. When the device is placed in seawater and is washed by seawater, the outer phase transfer membrane is supported by the inner anion exchange membrane, thereby effectively reducing the force impact and reducing the risk of damage. The annular design of the annular adhesive layer also facilitates the adhesion and fixation process of the two membranes on the surface of the ceramic filter column. The two membranes can be pasted and positioned in real time as the surface of the ceramic filter column is wrapped, which reduces the difficulty of the fixation work. Finally, the fixation on the annular adhesive layer is achieved by a clamp to ensure the stable installation of the two membranes on the ceramic filter column.

[0024] (6) The present invention adopts a support column-surrounded method to build a frame to facilitate the entry of seawater. In addition, roller sleeves are mounted on the support columns, which can rotate with the scouring of seawater, thereby dispersing the scouring pressure and reducing damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is an overall schematic diagram of the seawater-coupled water electrolysis hydrogen production device of the present invention;

[0026] Figure 2 Schematic diagram of the water flow direction in the seawater-coupled water electrolysis hydrogen production device of the present invention;

[0027] Figure 3 This is a schematic diagram of the internal structure of a ceramic filter column in the seawater-coupled water electrolysis hydrogen production device of the present invention;

[0028] Figure 4 This is a schematic diagram of the installation of a polymer membrane assembly of a seawater-coupled electrolysis water hydrogen production device on the outer circumferential surface of a ceramic filter column according to the present invention;

[0029] Figure 5 yes Figure 4 A partial enlarged view of middle A.

[0030] In the figure: 1. rack frame, 1-1. support column, 1-2. roller sleeve, 1-3. solid base, 1-4. top cover, 2. connecting water pipe, 3. ceramic filter column, 3-1. water vapor flow channel, 4. polymer membrane assembly, 4-1. anion exchange membrane, 4-2. polymer seawater phase transfer membrane, 5. first outer column, 5-1. water inlet, 5-2. seawater buffer zone, 6. second outer column, 6-1. connecting disc, 7. annular adhesive layer, 8. clamp. DETAILED DESCRIPTION

[0031] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0032] refer to Figure 4 and Figure 5 The present invention discloses a method for installing a polymer membrane assembly. The polymer membrane assembly 4 is installed on a ceramic filter column 3. The installation method includes the following steps:

[0033] S1. First, clean and polish the surface of the ceramic filter column 3 using 300-grit sandpaper. Apply at least three annular adhesive layers 7 along the height direction of the ceramic filter column 3.

[0034] S2. An anion exchange membrane 4-1 is adhered between each two annular adhesive layers 7. The anion exchange membrane 4-1 is also adhered to the annular adhesive layer 7. The anion exchange membrane 4-1 occupies one-third to one-half of the total area of the annular adhesive layer 7. In this embodiment, the anion exchange membrane 4-1 occupies one-third of the total area of the annular adhesive layer 7. The annular adhesive layer 7 is 6 mm thick and is made of epoxy resin glue.

[0035] S3. Along the height direction of the ceramic filter column 3, the expanded polytetrafluoroethylene membrane is integrally adhered using the remaining annular adhesive layer 7. The expanded polytetrafluoroethylene membrane covers the anion exchange membrane 4-1 of step S2 and the outer circumferential surface of the ceramic filter column 3;

[0036] S4. A ceramic clamp 8 is fixed to the annular adhesive layer 7. To ensure the stability of the fixed coverage, the ceramic clamp 8 needs to cover the annular adhesive layer 7.

[0037] First, an annular adhesive layer 7 with good waterproof and alkali resistance is applied along the ceramic filter column 3, and then an anion exchange membrane 4-1 is first pasted between each two adhesive layers, and finally the polymer seawater phase transfer membrane 4-2 is adhered to the whole. This method can realize the cross-adhesion and fixation of the inner and outer layers of the two membranes, while also ensuring that the ceramic surface of the ceramic filter column 3 is fully utilized for filtration to the greatest extent, without more adhesive layers blocking and affecting the filtration effect. On the other hand, since the annular adhesive layer 7 has a certain thickness, the inner and outer layers of the double polymer membranes are overlapped and adhered, and the anion exchange membrane 4-1 layer is The inner layer of the phase transfer membrane can form a flexible support for the phase transfer membrane. When the device is placed in seawater and is flushed by seawater, the outer phase transfer membrane is supported by the inner anion exchange membrane 4-1, thereby effectively reducing the force impact and reducing the risk of damage; and the annular design of the annular adhesive layer 7 also facilitates the adhesion and fixation process of the two membranes on the surface of the ceramic filter column 3. It can be pasted and positioned in real time as the surface of the ceramic filter column 3 is wrapped, which reduces the difficulty of the fixing work. Finally, the fixation on the annular adhesive layer 7 is achieved by the clamp 8 to ensure the stable installation of the two membranes on the ceramic filter column 3.

[0038] refer to Figure 1-Figure 3 A seawater coupled electrolysis water hydrogen production device including a polymer membrane assembly includes a frame body 1, a connecting water pipe 2, a ceramic filter column 3 and a polymer membrane assembly 4. A solid base 1-3 is fixed to the bottom of the frame body 1. Support columns 1-1 are fixedly arranged around the solid base 1-3. Roller sleeves 1-2 are coaxially arranged on the support columns 1-1. A top cover 1-4 is also provided on the top of the frame body 1. The frame body 1 is formed by surrounding the support columns 1-1 to facilitate the entry of seawater. In addition, a roller sleeve 1-2 is provided on the support columns 1-1. 1 is provided with a roller sleeve 1-2, which can rotate with the scouring of seawater, thereby dispersing the scouring pressure and reducing damage. The ceramic filter column 3 array is arranged in the frame 1 and is located in the encirclement formed by the support column 1-1 on the solid base 1-3. The outer surface of the ceramic filter column 3 is covered with a polymer membrane component 4. The ceramic filter column 3 is used to remove suspended sediments in the seawater, and then the polymer membrane component 4 is used to realize the phase conversion of seawater so that water molecules in the seawater can pass through, while chloride ions and other ions are effectively blocked.

[0039] The ceramic filter column 3 is provided with a phase-transfer filter area and a water vapor flow channel 3-1 located inside in sequence from the outside to the inside. The ceramic filter column 3 is hollow with a closed bottom, and the hollow portion is the water vapor flow channel 3-1.

[0040] The connecting water pipes 2 are all sealed and pass through the top cover 1-4, and are respectively communicated with the water vapor flow channel 3-1 of the ceramic filter column 3. The water vapor flow channels 3-1 of the ceramic filter column 3 are all sealed and pass through the top cover 1-4 through the connecting pipes, and are connected with the circulating water tank, the water pump, and the electrolytic cell in sequence; the water outlet of the electrolytic cell passes through the water vapor separator and the filtering mechanism in sequence and is connected to the water vapor flow channel 3-1 again. The hydrogen outlet of the electrolytic cell is connected to the hydrogen bottle for hydrogen collection.

[0041] The incompletely electrolyzed water at the anode outlet of the electrolytic cell passes through the water vapor separator (water and oxygen) and the filtering mechanism for separation and filtration, and then enters the water vapor flow channel 3-1 of the ceramic filter column 3 through the connecting pipe again. Since the electrolytic cell generates a large amount of heat during the electrolysis process, when this part of the water enters the water vapor flow channel 3-1 again, the residual heat can be used to heat the ceramic filter column 3, thereby accelerating the phase change of seawater, prompting more water molecules to enter the circulating water path, and effectively improving the phase change efficiency; in addition, this part of the water with residual heat can be cooled in the circulating water tank after merging with the water molecules re-extracted from the water vapor flow channel 3-1, thereby reducing the temperature of the electrolytic cell and forming a stable thermal management balance.

[0042] The polymer membrane assembly 4 constitutes a phase transfer filtration zone for water molecules. The polymer membrane assembly 4 includes an anion exchange membrane 4-1 and a polymer seawater phase transfer membrane 4-2. The polymer seawater phase transfer membrane 4-2 is any one of an expanded polytetrafluoroethylene membrane, a polyvinylidene fluoride membrane, a thermoplastic polyurethane membrane, and a polydimethylsiloxane membrane. In this embodiment, an expanded polytetrafluoroethylene membrane is selected; the anion exchange membrane 4-1 is a functionalized polybenzimidazole or a functionalized polyarylpiperidine resin membrane; the thickness of all polymer membrane assemblies 4 is 50-200 μm.

[0043] A combination of anion exchange membrane 4-1 and polymer seawater phase transfer membrane 4-2 is used. Chloride ions and other more harmful ions can be filtered through the anion exchange membrane 4-1, followed by the phase transfer membrane to transfer water molecules, and finally the ceramic filter column 3 is used to filter metal ions and anions that are easy to form precipitation.

[0044] A seawater buffer zone 5-2 and a debris filtration zone are sequentially provided outside the phase transfer filtration zone of the ceramic filter column 3. A first outer layer cylinder 5 is coaxially fixedly provided outside the ceramic filter column 3. A water inlet 5-1 is arrayed on the circumferential wall of the first outer layer cylinder 5. The aperture of the water inlet 5-1 is 3-5 mm, which is set to 4 mm in this embodiment. The interlayer between the first outer layer cylinder 5 and the ceramic filter column 3 is a seawater buffer zone 5-2. A second outer layer cylinder 6 is coaxially provided outside the first outer layer cylinder 5. The second outer layer cylinder 6 is fixedly connected to the first outer layer cylinder 5 through a connecting disc 6-1. Filter holes are arrayed on the connecting disc 6-1. In this embodiment, the aperture of the filter holes is 7 mm. The connecting disc 6-1 and the filter holes constitute a debris filtration zone.

[0045] The debris filtration area can effectively remove larger debris in the seawater through the design of the filter holes, and then filter out smaller debris again through the water inlet 5-1 of the first outer column 5 and enter the seawater buffer zone 5-2 for storage; the existence of the seawater buffer zone 5-2 can also prevent a large amount of seawater from directly acting on the ceramic filter column 3, resulting in the waste heat of the incompletely electrolyzed water being unable to effectively act on the ceramic filter column 3 and unable to obtain a high filtration efficiency.

[0046] The top and bottom of the second outer column 6 are respectively lower than the top and bottom of the first outer column 5, that is, after the ceramic filter column 3 is fixedly installed on the solid base 1-3, its top and bottom are both open, thereby facilitating that seawater can smoothly pass through the connecting disc 6-1 for preliminary filtration and then enter the seawater buffer zone 5-2.

[0047] refer to Figure 1-Figure 3 The working principle of the present invention is as follows: after the seawater passes through the connecting disc 6-1 of the second outer column 6 to filter out impurities, it passes through the water inlet 5-1 of the first outer column 5 to filter out impurities for the second time, and then enters the seawater buffer zone 5-2. Under the operation of the water pump, it passes through the filtration phase transfer of the polymer membrane component 4 and the filtration of the ceramic filter column 3 to filter out the chloride ions in the seawater, and the required water vapor flows upward in the water vapor flow channel 3-1, and is condensed into water liquid in the circulating water tank and then enters the electrolytic cell for water electrolysis reaction. The hydrogen generated by electrolysis is sent to the hydrogen bottle for collection, and the water that is not completely electrolyzed is separated by the water vapor separator and then passes through the filter. After filtering out the impurities, the water enters the water vapor flow channel 3-1 of the ceramic filter column 3 again through the connecting water pipe 2. Since the water is heated after passing through the electrolytic cell, this part of the water can use this part of the residual heat to heat the ceramic filter column 3 when it is in the water vapor flow channel 3-1, thereby further promoting the entry of water molecules and effectively improving the filtration efficiency; in addition, this part of the water with residual heat can reduce the overall temperature after merging with the water molecules re-extracted from the water vapor flow channel 3-1. Therefore, after mixing with the re-extracted water molecules, it can enter the condensate of the circulating water tank again and then enter the electrolytic cell for electrolysis of water, thereby forming an electrolysis water circulation working state.

[0048] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0049] In the present invention, unless otherwise clearly stipulated and limited, the terms "install", "set", "connect", "fix", "screw", "place" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0050] The foregoing description shows and describes preferred embodiments of the present invention. As previously mentioned, it should be understood that the present invention is not limited to the form disclosed herein and should not be construed as excluding other embodiments. Instead, the present invention can be used in various other combinations, modifications, and environments and can be modified within the scope of the inventive concept described herein by the teachings above or by techniques or knowledge in the relevant art. Modifications and variations made by those skilled in the art without departing from the spirit and scope of the present invention are intended to be within the scope of the appended claims.

Claims

1. A method for installing a polymer membrane assembly, characterized in that: The polymer membrane assembly (4) is installed on the ceramic filter column (3), and the installation method includes the following steps: S1, coating at least three annular adhesive layers (7) along the height direction of the ceramic filter column (3); S2. An anion exchange membrane (4-1) is adhered between each two annular adhesive layers (7), and the anion exchange membrane (4-1) occupies one third to one half of the total area of the annular adhesive layer (7); S3, integrally attaching a polymer seawater phase transfer membrane (4-2) along the height direction of the ceramic filter column (3), wherein the polymer seawater phase transfer membrane (4-2) covers the anion exchange membrane (4-1) of step S2 and the outer circumferential surface of the ceramic filter column (3); S4. A clamp (8) is fixed at each of the annular rubber layers (7).

2. The method for installing a polymer membrane assembly according to claim 1, wherein: The annular adhesive layer (7) has a thickness of 5-8 mm and is made of one of epoxy resin adhesive, polyurethane adhesive, acrylic structural adhesive, and polysulfide sealant; the clamp (8) is a ceramic clamp (8), and the width of the clamp (8) covers the width of the annular adhesive layer (7).

3. A seawater-coupled water electrolysis hydrogen production device comprising the polymer membrane assembly according to claim 2, characterized in that: The invention comprises a frame body (1), a connecting water pipe (2), a ceramic filter column (3) and a polymer membrane assembly (4); a solid base (1-3) is fixed to the bottom of the frame body (1); support columns (1-1) are fixedly arranged around the four sides of the solid base (1-3); roller sleeves (1-2) are coaxially arranged on the support columns (1-1); a top cover (1-4) is also provided on the top of the frame body (1); the ceramic filter columns (3) are arranged in an array within the frame body (1) and are located within the encirclement formed by the support columns (1-1) on the solid base (1-3); and the outer surface of the ceramic filter columns (3) is covered with a polymer membrane assembly (4).

4. The seawater-coupled water electrolysis hydrogen production device according to claim 3, characterized in that: The ceramic filter column (3) is provided with a phase-transfer filter area and a water vapor flow channel (3-1) located inside in sequence from the outside to the inside. The ceramic filter column (3) is hollow with a closed bottom, and the hollow portion is the water vapor flow channel (3-1).

5. The seawater-coupled water electrolysis hydrogen production device according to claim 3, characterized in that: The water vapor flow channel (3-1) of the ceramic filter column (3) is sealed through a connecting pipe and penetrates the top cover (1-4) and is then connected to the circulating water tank, the water pump, and the electrolytic cell in sequence; the water outlet of the electrolytic cell passes through a water vapor separator and a filtering mechanism in sequence and is then connected to the water vapor flow channel (3-1) again, and the hydrogen outlet of the electrolytic cell is connected to a hydrogen bottle for hydrogen collection.

6. The seawater-coupled water electrolysis hydrogen production device according to claim 3, characterized in that: The polymer membrane assembly (4) constitutes a phase transfer filtration zone for water molecules. The polymer membrane assembly (4) comprises an anion exchange membrane (4-1) and a polymer seawater phase transfer membrane (4-2). The polymer seawater phase transfer membrane (4-2) is any one of an expanded polytetrafluoroethylene membrane, a polyvinylidene fluoride membrane, a thermoplastic polyurethane membrane, and a polydimethylsiloxane membrane. The anion exchange membrane (4-1) is a functionalized polybenzimidazole or a functionalized polyarylpiperidine resin membrane. The thickness of all polymer membrane assemblies (4) is 50-200 μm.

7. The seawater-coupled water electrolysis hydrogen production device according to claim 3, characterized in that: The ceramic filter column (3) is provided with a seawater buffer zone (5-2) and a debris filter zone in sequence outside the phase-shift filter zone. A first outer column (5) is coaxially fixedly provided outside the ceramic filter column (3). A water inlet (5-1) is arranged in an array on the circumferential wall of the first outer column (5). The interlayer between the first outer column (5) and the ceramic filter column (3) is the seawater buffer zone (5-2). A second outer column (6) is coaxially provided outside the first outer column (5). The second outer column (6) is fixedly connected to the first outer column (5) via a connecting disc (6-1). Filter holes are arranged in an array on the connecting disc (6-1). The connecting disc (6-1) and the filter holes constitute the debris filter zone.

8. The seawater-coupled water electrolysis hydrogen production device according to claim 7, characterized in that: The aperture of the water inlet (5-1) is 3-5 mm, and the aperture of the filter hole is 5-10 mm.

9. The seawater-coupled water electrolysis hydrogen production device according to claim 3, characterized in that: The connecting water pipes (2) are sealed and penetrate the top cover (1-4) and are respectively communicated with the water vapor flow channel (3-1) of the ceramic filter column (3).

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