Seawater phase change mass transfer device

Abstract

The seawater phase change mass transfer device comprises a seawater phase change mass transfer unit, the seawater phase change mass transfer unit comprises a flow channel plate and a hydrophobic porous layer, the flow channel plate is provided with a first flow channel for electrolyte to flow, at least part of the hydrophobic porous layer is compounded on the first flow channel, and the hydrophobic porous layer is arranged on the flow channel plate. And the hydrophobic porous layer and the first runner of the runner plate are enclosed to form a first cavity structure for electrolyte to flow. The utility model breaks through the bottleneck of the traditional seawater desalination electrolysis hydrogen production, does not need large-size seawater desalination equipment, and greatly reduces the costs in the aspects of construction, operation, manpower, maintenance and the like. In addition, the device can be directly coupled with a commercial water electrolysis hydrogen production system, an electrolysis system which originally needs purified water to produce hydrogen is upgraded to an electrolysis system which does not need purified water, and the device is a qualitative leap for equipment renovation and optimization.

Description

Technical Field

[0001] The utility model relates to the technical field of electrochemically hydrogen production, and more specifically, to a seawater phase change mass transfer device. Background Art

[0002] Hydrogen production from seawater can effectively alleviate the dependence on pure water for the growing demand for electrolytic hydrogen production in the future, and realize the effective utilization of renewable energy such as far - reaching offshore wind and light. In particular, direct electrolysis of seawater for hydrogen production can effectively save the equipment investment and energy consumption cost of seawater desalination or pretreatment, and reduce the construction and operation and maintenance costs of the platform during large - scale floating wind power development in the far - reaching sea.

[0003] However, the composition of seawater is extremely complex, containing 92 chemical elements, which easily leads to toxicity or corrosion of the electrolytic cell or catalyst; at the same time, impurity ions in seawater cause problems such as calcium and magnesium precipitation and membrane blockage; and the composition of seawater is greatly affected by time, region, and human activities, making it difficult for the electrolysis system to be compatible with different seawaters. In addition, the electrolysis system for seawater hydrogen production generates a large amount of heat, resulting in the need for a cooling water cycle to reduce the system temperature.

[0004] Therefore, the utility model constructs a seawater phase change mass transfer device to solve the above - mentioned technical problems. Summary of the Utility Model

[0005] The utility model aims to solve at least one of the technical problems existing in the prior art.

[0006] To this end, the utility model provides a seawater phase change mass transfer device, including a seawater phase change mass transfer unit. The seawater phase change mass transfer unit includes a flow channel plate and a hydrophobic porous layer. A first flow channel for the electrolyte to flow is provided on the flow channel plate. At least a part of the hydrophobic porous layer is compounded on the first flow channel, and a first cavity structure for the electrolyte to flow is formed by enclosing the first flow channel of the hydrophobic porous layer and the flow channel plate.

[0007] A plurality of the seawater phase change mass transfer units are connected to each other to form a mass transfer module, and a second flow channel for seawater to flow is provided between any two adjacent seawater phase change mass transfer units.

[0008] In the above - mentioned technical solution, the seawater phase change mass transfer unit further includes a support wattle, and the support wattle is used to support two adjacent hydrophobic porous layers compounded on the first flow channel.

[0009] In the above - mentioned technical solution, the first flow channels of a plurality of the seawater phase change mass transfer units are connected in series in sequence, or a plurality of the seawater phase change mass transfer units are connected in parallel through a connector.

[0010] In the above technical solution, a seawater phase change mass transfer device further includes a heat exchange pipe gallery, which is connected to the seawater phase change mass transfer unit, and the heat exchange pipe gallery is provided with a second cavity structure for the electrolyte to flow.

[0011] In this technical solution, the heat exchange pipe gallery at least includes a first pipeline and a second pipeline that are connected in series, and the first pipeline and the second pipeline are arranged at an angle.

[0012] In this technical solution, the heat exchange pipe gallery includes a plurality of first pipelines and second pipelines that are connected in series, and the plurality of first pipelines and the second pipelines are intertwined and connected to form the heat exchange pipe gallery.

[0013] In the above technical solution, a seawater phase change mass transfer device further includes an electrolysis system, which is connected to the seawater phase change mass transfer unit, and the electrolysis system is connected to the mass transfer unit electrolyte outlet and the mass transfer unit electrolyte inlet of the seawater phase change mass transfer unit. The electrolysis system is used to electrolyze water to produce hydrogen from the electrolyte flowing out of the mass transfer unit electrolyte outlet of the seawater phase change mass transfer unit, and the electrolyte after electrolysis to produce hydrogen can enter the seawater phase change mass transfer unit through the mass transfer unit electrolyte inlet.

[0014] In the above technical solution, a seawater phase change mass transfer device further includes a seawater filter screen, which is arranged upstream of the seawater phase change mass transfer unit and on the flow path of the seawater, so that the seawater passes through the seawater filter screen and enters the second flow channel. The seawater filter screen is at least used to filter solid impurities in the seawater.

[0015] In the above technical solution, a seawater phase change mass transfer device includes a plurality of seawater filter screens, and the plurality of seawater filter screens enclose a placement cavity, and the seawater phase change mass transfer unit and the heat exchange pipe gallery are arranged in the placement cavity.

[0016] In the above technical solution, a seawater phase change mass transfer device includes a plurality of seawater filter screens, and the heat exchange pipe gallery is detachably connected to the seawater filter screen.

[0017] In the above technical solution, a seawater phase change mass transfer device includes a plurality of seawater filter screens, and the seawater phase change mass transfer unit is detachably connected to the seawater filter screen.

[0018] In the above technical solution, a seawater phase change mass transfer device further includes a mounting frame, and the seawater filter screen is detachably connected to the mounting frame.

[0019] In the above technical solution, a seawater phase change mass transfer device further includes a mounting frame, and the heat exchange pipe gallery is detachably connected to the mounting frame.

[0020] In the above technical solution, a seawater phase change mass transfer device further includes a mounting frame, and the seawater phase change mass transfer unit is detachably connected to the mounting frame.

[0021] In summary, due to the adoption of the above technical features, the beneficial effects of the present utility model are as follows:

[0022] 1) The present utility model provides a seawater phase change mass transfer device, which directly and spontaneously induces the separation of pure water in seawater in-situ and is captured by the electrolyte, providing raw material moisture for hydrogen production by electrolysis;

[0023] 2) In the present utility model, a form of closely arranging seawater phase change mass transfer units is adopted to achieve the largest possible mass transfer area per unit volume, thereby realizing efficient phase change mass transfer;

[0024] 3) In the present utility model, the hydrophobic porous layer and the flow channel plate are seamlessly connected through multi-level sealing, ensuring that the mass transfer module has a relatively thin thickness while also saving the floor space of the overall mass transfer device. At the same time, the sealing boundary is tightly and firmly connected, and problems such as leakage or failure of the hydrophobic porous interface are not likely to occur;

[0025] 4) In the present utility model, a heat exchange pipe gallery with a heat exchange effect is designed at the front end of the seawater phase change mass transfer unit, which dissipates heat for the electrolysis system while ensuring the saturated vapor pressure difference between the electrolyte and seawater, effectively stabilizing the mass transfer efficiency of seawater migration. The present utility model can dissipate heat for the electrolysis system, reduce the energy consumption of the heat dissipation part of the electrolysis system while ensuring the mass transfer efficiency, and can replace and eliminate some redundant cooling water modules in the electrolysis system.

[0026] The additional aspects and advantages of the present utility model will become obvious in the following description part, or be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0028] Figure 1 is a perspective view of a seawater phase change mass transfer device according to an embodiment of the present utility model;

[0029] Figure 2 is a perspective view of a seawater phase change mass transfer device according to another embodiment of the present utility model;

[0030] Figure 3 is a perspective view of a seawater phase change mass transfer device according to yet another embodiment of the present utility model;

[0031] Among them, Figures 1 to 3 the corresponding relationship between the reference numerals in the drawings and the component names is:

[0032] 1. Seawater filtration screen; 2. Heat exchange pipe gallery electrolyte inlet; 3. Heat exchange pipe gallery; 4. Seawater phase change mass transfer unit; 5. Connector outlet; 6. Flow channel plate; 7. Hydrophobic porous layer; 8. Mass transfer unit electrolyte inlet; 9. Mass transfer unit electrolyte outlet; 10. Connector. Detailed implementation manners

[0033] In order to more clearly understand the above objects, features and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific implementation manners. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.

[0034] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited by the specific embodiments disclosed below.

[0035] The following refers to Figures 1 to 3 to describe a seawater phase change mass transfer device according to some embodiments of the present invention.

[0036] Some embodiments of the present application provide a seawater phase change mass transfer device.

[0037] In an embodiment of the present application, a seawater phase change mass transfer device includes a seawater phase change mass transfer unit 4. The seawater phase change mass transfer unit 4 includes a flow channel plate 6 and a hydrophobic porous layer 7. A first flow channel for electrolyte flow is provided on the flow channel plate 6. At least a part of the hydrophobic porous layer 7 is compounded on the first flow channel, and a first cavity structure for electrolyte flow is formed by enclosing the hydrophobic porous layer 7 and the first flow channel of the flow channel plate 6.

[0038] It is easy to understand that reference may be made to Figure 1, a first flow channel for electrolyte flow is provided on the flow channel plate 6. At the same time, a mass transfer unit electrolyte inlet 8 and a mass transfer unit electrolyte outlet 9 are correspondingly provided on the flow channel plate 6. Since the hydrophobic porous layer 7 and the first flow channel enclose a first cavity structure, the interface of the hydrophobic porous layer 7 isolates the electrolyte in the first flow channel from the external liquid seawater. Driven by the interface pressure difference, the water in the external seawater spontaneously undergoes a phase change from liquid water to gaseous water. Due to the hydrophobic property of the hydrophobic porous layer 7, while allowing gas to freely pass through the membrane, it can keep water and impurities out of the membrane. The gaseous water can enter the electrolyte stored in the first cavity structure through the membrane pores of the hydrophobic porous layer 7 and be captured by the electrolyte. Since the liquid seawater cannot mix with the electrolyte through the membrane pores of the hydrophobic porous layer 7, the direct contact between the liquid seawater and the electrolyte is isolated, thereby preventing various impurities in the seawater from entering the electrolyte, such as visible solid impurities or water-soluble impurity ions from entering the electrolyte.

[0039] The present utility model proposes a seawater phase change mass transfer device, which directly and spontaneously induces the pure water in seawater to achieve in-situ separation and be captured by the electrolyte, providing raw material moisture for electrolytic hydrogen production.

[0040] Specifically, the interface of the hydrophobic porous layer 7 can be seamlessly connected to the flow channel plate 6 through a multi-level sealing method to enclose a first cavity structure. Of course, support bars can also be provided to support the hydrophobic porous layers 7 on both sides of the same seawater phase change mass transfer unit 4. The support bars can be directly supported on the hydrophobic porous layers 7 on both sides, or the support bars can be connected and fixed to the flow channel plate 6 to achieve a more stable support effect.

[0041] It is easy to understand that in this application, the first flow channels on the flow channel plate 6 can be arranged parallel to each other, or cross each other. Of course, they can also be arranged into other regular or irregularly shaped flow channels, such as serpentine flow channels.

[0042] More specifically, multiple seawater phase change mass transfer units 4 can be interconnected to form a mass transfer module, and a second flow channel for seawater circulation is provided between any two adjacent seawater phase change mass transfer units 4. It is easy to understand that the seawater phase change mass transfer units 4 can be interconnected to form a mass transfer module. In a specific embodiment, the gap between two adjacent seawater phase change mass transfer units 4 is 1-2 cm, that is, the gap between the adjacent hydrophobic porous layers 7 of the two seawater phase change mass transfer units 4 is 1-2 cm. This gap is the second flow channel for seawater circulation. Of course, the thickness of the seawater phase change mass transfer unit 4 can be 8 mm (as Figure 1 the horizontal distance shown can be understood as the thickness of the seawater phase change mass transfer unit 4). In the present utility model, a form of closely arranging extremely thin mass transfer units realizes the largest possible mass transfer area per unit volume, thereby achieving efficient phase change mass transfer.

[0043] More specifically, in the mass transfer module used in the present utility model, the hydrophobic porous layer 7 with waterproof and breathable effects and the flow channel plate 6 are seamlessly connected through multi-level sealing, ensuring that while the mass transfer module has a relatively thin thickness, it can also save the floor area of the overall mass transfer device. At the same time, the sealing boundary is tightly and firmly connected, and it is not easy to have problems such as leakage or failure of the waterproof and breathable interface.

[0044] The first flow channels of the multiple seawater phase change mass transfer units 4 in the mass transfer module can be arranged in series in sequence, that is, the mass transfer unit electrolyte outlet 9 of one seawater phase change mass transfer unit 4 is connected to the mass transfer unit electrolyte inlet 8 of the next seawater phase change mass transfer unit 4, and after being connected in sequence, a mass transfer module arranged in series is formed. This setting can enable the electrolyte to enter the seawater phase change mass transfer unit 4 in an orderly manner.

[0045] Of course, in a preferred embodiment, the multiple seawater phase change mass transfer units 4 are arranged in parallel through a connector 10. That is to say, the mass transfer unit electrolyte inlets 8 of the multiple seawater phase change mass transfer units 4 are connected to a first connector, and the electrolyte can enter the multiple seawater phase change mass transfer units 4 through the first connector. The mass transfer unit electrolyte outlets 9 of the multiple seawater phase change mass transfer units 4 are connected to a second connector, and the electrolyte in the multiple seawater phase change mass transfer units 4 can be discharged through the second connector. This structural design can enable the electrolyte to flow quickly into each seawater phase change mass transfer unit 4, improving the conversion rate.

[0046] More specifically, as Figure 2 shown, in a preferred embodiment, the seawater phase change mass transfer device further includes a heat exchange pipe gallery 3. The heat exchange pipe gallery 3 is connected to the seawater phase change mass transfer unit 4, and the heat exchange pipe gallery 3 is provided with a second cavity structure for the electrolyte to flow and a heat exchange pipe gallery electrolyte inlet 2. Seawater can directly contact the heat exchange pipe gallery 3 and the mass transfer module. Since electrolysis is an exothermic process, the temperature of the electrolyte is generally much higher than that of natural seawater. The high-temperature electrolyte discharged from the electrolysis system after hydrogen production by electrolysis can first enter the heat exchange pipe gallery 3 for heat exchange. The high-temperature electrolyte flows in a staggered manner in the heat exchange pipe gallery 3, and after extensive heat exchange with seawater, the temperature of the electrolyte decreases. Therefore, it is equivalent to transferring the heat generated by the electrolysis system to the seawater at the same time, realizing the reduction of the electrolyte temperature.

[0047] In this embodiment, a seawater phase change mass transfer device simultaneously realizes the functions of dissipating the electrolysis heat and in-situ separation and capture of pure water. If the high-temperature electrolyte is directly introduced into the mass transfer unit without passing through a heat exchange process, the temperature difference between the seawater and the electrolyte will be further increased, resulting in a decrease in the steam pressure difference driving force between the seawater and the electrolyte, and a decrease in the in-situ separation efficiency of pure water in the seawater. In the present utility model, a heat exchange pipe gallery 3 with a heat exchange effect is designed at the front end of the seawater phase change mass transfer unit 4, which dissipates heat for the electrolysis system while ensuring the saturated steam pressure difference between the electrolyte and the seawater, and effectively stabilizes the mass transfer efficiency of seawater migration. The present utility model can dissipate heat for the electrolysis system, reduce the energy consumption of the heat dissipation part of the electrolysis system while ensuring the mass transfer efficiency, and can replace and eliminate some redundant cooling water modules in the electrolysis system.

[0048] More specifically, the heat exchange pipe gallery 3 may include a first pipeline and a second pipeline connected in communication, and the first pipeline and the second pipeline are arranged at an angle. The first pipeline and the second pipeline intersect and are connected at an angle, which can improve the heat exchange effect between the electrolyte and the seawater in the heat exchange pipe gallery 3. More specifically, as Figure 2 shown, the adjacent pipelines in the heat exchange pipe gallery 3 are vertically intersected and connected to each other, reducing the dead angle of liquid flow in the heat exchange pipe gallery 3. At the same time, its multi-cross structure can also promote the flow rate of the electrolyte.

[0049] Furthermore, the heat exchange pipe gallery 3 may include a plurality of first pipelines and second pipelines connected in communication. The plurality of first pipelines and the second pipelines are intertwined and connected to form the heat exchange pipe gallery 3. Of course, the heat exchange pipe gallery 3 may also include more pipelines, and the pipelines are intersected and connected to each other, which can make the electrolyte flow more fully in the heat exchange pipe gallery 3 and further improve the heat exchange effect of the heat exchange pipe gallery 3. Refer to Figure 2 , when a seawater phase change series device is placed in a three-dimensional coordinate system for consideration, the heat exchange pipe gallery 3 includes a first pipeline arranged along the X-axis, a second pipeline arranged along the Y-axis, and a third pipeline arranged along the Z-axis. The first pipeline, the second pipeline, and the third pipeline can be intersected and connected to each other to form a three-dimensional and multi-layer heat exchange pipe gallery 3. Figure 2 The first pipeline, the second pipeline, and the third pipeline exemplified in

[0050] are vertically arranged. Of course, they can also be arranged at other angles. And the first pipeline, the second pipeline, and the third pipeline exemplified in the present application are all straight pipelines, which is also a setting method in an embodiment of the present application. The first pipeline, the second pipeline, and the third pipeline can also be set as pipelines with arcs, bends, etc., which will not be elaborated here.

[0051] In a preferred embodiment of the present application, a seawater phase change mass transfer device further includes an electrolysis system, which is connected to the seawater phase change mass transfer unit 4, and the electrolysis system is connected to the mass transfer unit electrolyte outlet 9 and the mass transfer unit electrolyte inlet 8 of the seawater phase change mass transfer unit 4. The electrolysis system is used to electrolyze water in the electrolyte flowing out from the mass transfer unit electrolyte outlet 9 of the seawater phase change mass transfer unit 4 to produce hydrogen, and the electrolyte after the electrolysis for hydrogen production is introduced into the seawater phase change mass transfer unit 4 through the mass transfer unit electrolyte inlet 8 of the seawater phase change mass transfer unit 4. The electrolyte after capturing pure water from seawater enters the electrolysis system again through the connector outlet 5 on the mass transfer device for electrolysis to produce hydrogen. The electrolyte that has captured pure water molecules flows out from the seawater phase change mass transfer unit 4 or a mass transfer module formed by connecting multiple seawater phase change mass transfer units 4 to each other, and enters the electrolysis system for electrolysis to produce hydrogen. The electrolysis process consumes the water in the electrolyte, thereby increasing the concentration and temperature of the electrolyte, and then enters the seawater phase change mass transfer unit 4 again through circulation, thus forming a continuous dynamic process of "seawater phase change mass transfer for capturing water - electrolysis for hydrogen production".

[0052] Since there are still some impurities in seawater, in another preferred embodiment of the present application, a seawater filtration screen 1 can be provided to filter out solid impurities in seawater. Specifically, the seawater filtration screen 1 is arranged upstream of the seawater phase change mass transfer unit 4 and on the flow path of the seawater. That is to say, when a seawater phase change mass transfer device actually works, seawater first passes through the seawater filtration screen 1 and then enters the second flow channel of the mass transfer module. Therefore, it can effectively prevent impurities in seawater from entering the seawater phase change mass transfer device and affecting its normal operation.

[0053] More specifically, as Figure 3 shown, a seawater phase change mass transfer device can include multiple seawater filtration screens 1 to achieve a better filtration effect, and multiple seawater filtration screens 1 can also be connected to each other to enclose a placement cavity. The seawater phase change mass transfer unit 4 and the heat exchange pipe gallery 3 are arranged in the placement cavity. In this way, multiple seawater filtration screens 1 can form a filtration system to filter seawater more comprehensively and prevent impurities from entering the seawater phase change mass transfer device.

[0054] Multiple seawater filtration screens 1 can be arranged to be detachably connected, which is convenient for maintenance and installation. At the same time, the seawater phase change mass transfer unit 4 and the heat exchange pipe gallery 3 in the placement cavity formed by connecting multiple seawater filtration screens 1 to each other can also be detachably connected to the seawater filtration screens 1. This is not only convenient for disassembly and assembly, but also can be flexibly assembled according to the actual working scenario. Some clamping structures convenient for installation can be provided on the seawater filtration screens 1, which will not be elaborated here.

[0055] Refer to againFigure 3 To ensure the overall strength of a seawater phase change mass transfer device and to address the issue of reaching its maximum usage limit, an installation frame can be provided to enhance the overall strength. The heat exchange pipe gallery 3 and the seawater phase change mass transfer unit 4 can be arranged within the installation frame, or they can also be configured to be detachably connected to the installation frame. A seawater filtration screen 1 is laid on the outer peripheral side of the installation frame to comprehensively filter seawater.

[0056] It can be understood that, in the present application Figures 1 - 3 is merely a schematic diagram of one embodiment. For example, Figure 3 the installation frame shown schematically as a cuboid in

[0057] is only described as one embodiment in the present application. Specifically, the installation frame can also be configured in a regular or other irregular shape.

[0058] It can be understood that the present utility model breaks through the bottleneck of traditional seawater desalination for electrolytic hydrogen production, eliminating the need for large-scale seawater desalination equipment and greatly reducing costs in aspects such as construction, operation, manpower, and maintenance. Moreover, the present utility model can also be directly coupled with a commercial electrolytic water hydrogen production system, upgrading the electrolytic system that originally required pure water for hydrogen production to an electrolytic system that does not require pure water, which represents a qualitative leap for equipment renovation and optimization.

[0059] In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiments or examples. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0060] Any modifications, equivalent replacements, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A seawater phase change mass transfer device, characterized in that: include: The method comprises a seawater phase change mass transfer unit, wherein the seawater phase change mass transfer unit comprises a flow channel plate and a hydrophobic porous layer, wherein a first flow channel for electrolyte to flow is arranged on the flow channel plate, wherein at least a part of the hydrophobic porous layer is covered on the first flow channel, and the hydrophobic porous layer and the first flow channel of the flow channel plate are enclosed to form a first cavity structure for electrolyte to flow; A plurality of the seawater phase change mass transfer units are interconnected to form a mass transfer module, and a second flow channel for seawater circulation is provided between any two adjacent seawater phase change mass transfer units.

2. A seawater phase change mass transfer device according to claim 1, characterized in that: The seawater phase change mass transfer unit further comprises a supporting braid, and the supporting braid is used to support two adjacent hydrophobic porous layers composited on the first flow channel.

3. The seawater phase change mass transfer device according to claim 1, characterized in that: The first flow channels of the plurality of seawater phase change mass transfer units are sequentially arranged in series, or the plurality of seawater phase change mass transfer units are arranged in parallel via a connector.

4. The seawater phase change mass transfer device according to claim 1, characterized in that: It also includes a heat exchange gallery, which is connected to the seawater phase change mass transfer unit and is provided with a second cavity structure for the flow of electrolyte.

5. A seawater phase change mass transfer device according to claim 4, characterized in that: The heat exchange pipe gallery includes at least a first pipeline and a second pipeline that are connected to each other, and the first pipeline and the second pipeline are arranged at an angle.

6. A seawater phase change mass transfer device according to claim 5, characterized in that: The heat exchange pipe gallery includes a plurality of first pipes and second pipes that are interconnected, and the plurality of first pipes and second pipes are interwoven and interconnected to form the heat exchange pipe gallery.

7. The seawater phase change mass transfer device according to claim 1, characterized in that: It also includes an electrolysis system, which is connected to the seawater phase change mass transfer unit, and the electrolysis system is connected to the mass transfer unit electrolyte outlet and the mass transfer unit electrolyte inlet of the seawater phase change mass transfer unit. The electrolysis system is used to electrolyze the electrolyte flowing out of the mass transfer unit electrolyte outlet of the seawater phase change mass transfer unit to produce hydrogen, and the electrolyte after the electrolysis hydrogen production is completed can enter the seawater phase change mass transfer unit through the mass transfer unit electrolyte inlet.

8. The seawater phase change mass transfer device according to claim 4, characterized in that: It also includes a seawater filter screen, which is arranged upstream of the seawater phase change mass transfer unit and on the flow path of the seawater, so that the seawater passes through the seawater filter screen and enters the second flow channel. The seawater filter screen is at least used to filter solid impurities in the seawater.

9. A seawater phase change mass transfer device according to claim 8, characterized in that: It comprises a plurality of seawater filter screens, wherein the plurality of seawater filter screens enclose a placement cavity, and the seawater phase change mass transfer unit and the heat exchange pipe gallery are arranged in the placement cavity; And or, the heat exchange pipe gallery is detachably connected to the seawater filter screen; And or, the seawater phase change mass transfer unit is detachably connected to the seawater filter screen.

10. The seawater phase change mass transfer device according to claim 8, characterized in that: Also includes mounting frame, The seawater filtering screen is detachably connected to the mounting frame; And / or, the heat exchange pipe gallery is detachably connected to the installation frame; And / or, the seawater phase change mass transfer unit is detachably connected to the installation frame.

Images