Ion adsorber, ion adsorption device, and ion extraction system

Abstract

The utility model relates to the technical field of ion adsorption, and provides an ion adsorption body, an ion adsorption device and an ion extraction system. The ion adsorption body comprises a separation net and an ion adsorption film. In the first direction, the ion adsorption film is arranged on at least one side of the separation net in a stacked mode. And the ion adsorption film and the separation net are at least partially propped against each other. Through the arrangement of the separation net, a supporting effect can be formed on the ion adsorption film, so that the ion adsorption film keeps a stable abutting relation through the separation net, and the stability of the ion adsorption body is improved. Through the arrangement of the ion adsorption film and the separation net, the two opposite surfaces, in the first direction, of the ion adsorption film can make contact with liquid, the contact area of the ion adsorption film and the liquid is increased, and the ion adsorption efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ion adsorption, and in particular to an ion adsorption body, an ion adsorption device and an ion extraction system. BACKGROUND

[0002] With the continuous development of new energy, lithium batteries have become the mainstream power source of new energy.

[0003] In related technologies, ion sieves are often used to extract lithium ions from salt lakes. Common ion sieves include granular ion sieves and membrane-shaped ion sieves.

[0004] With the increasing demand for lithium, there is an urgent need for an adsorption device that can improve the efficiency of lithium ion adsorption. CONTENT OF THE INVENTION

[0005] The present application provides an ion adsorption body, an ion adsorption device and an ion extraction system, which increase the contact area between the ion adsorption membrane and the liquid, so that the ion adsorption membrane can provide more adsorption sites, thereby improving the efficiency and effect of ion adsorption.

[0006] To achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0007] In a first aspect, the present application provides an ion adsorption body, comprising:

[0008] A separation net.

[0009] An ion adsorption membrane, which is stacked on at least one side of the separation net along a first direction, and the ion adsorption membrane and the separation net at least partially abut; the first direction is along the thickness direction of the ion adsorption membrane.

[0010] As an optional implementation, the ion adsorption membrane is multiple, and the multiple ion adsorption membranes are stacked on at least one side of the separation net along the first direction.

[0011] As an optional implementation, the separation net is multiple, and the separation net and the ion adsorption membrane are alternately and sequentially stacked along the first direction.

[0012] As an optional implementation, along the first direction, the separation net is covered by the ion adsorption membrane in the orthogonal projection of the surface where the ion adsorption membrane is located.

[0013] As an optional implementation, the ion adsorption body further comprises at least one of the following:

[0014] The thickness of the separation net is greater than or equal to 0.02mm and less than or equal to 1mm.

[0015] The mesh has a mesh number greater than or equal to 10 and less than or equal to 100.

[0016] The mesh comprises a polyamide mesh, a polyvinyl chloride mesh, or a polypropylene mesh.

[0017] The ion adsorption film has a thickness greater than or equal to 0.1 mm and less than or equal to 10 mm.

[0018] The ion adsorption body has a bulk density greater than or equal to 0.1 g / ml and less than or equal to 5 g / ml.

[0019] The ion adsorption film has a specific surface area greater than or equal to 2 m 2 / g and less than or equal to 50 m 2 / g.

[0020] As an optional embodiment, the mesh and the ion adsorption film are laminated and wound to form a wound structure.

[0021] As an optional embodiment, the ion adsorption body further comprises a connecting tube, and the wound structure wraps an outer wall of the connecting tube.

[0022] One end of the connecting tube is in communication with the outside, and the connecting tube has a first communication hole on a tube wall of the connecting tube, the first communication hole being used for flowing liquid in the wound structure to the connecting tube and being discharged through the end of the connecting tube in communication with the outside.

[0023] As an optional embodiment, the first communication hole is a plurality of first communication holes arranged in an array on the tube wall of the connecting tube.

[0024] In a second aspect, the present application provides an ion adsorption device, comprising:

[0025] The ion adsorption body of the first aspect.

[0026] A connecting member, along the first direction, the ion adsorption body is fixed on the connecting member.

[0027] As an optional embodiment, the connecting member has a hollow hole, the ion adsorption body is connected to one side of the connecting member along the first direction, and the ion adsorption body and the hollow hole are at least partially opposite.

[0028] As an optional embodiment, the connecting member has a hollow hole, the ion adsorption body is arranged in the hollow hole and connected to a hole wall of the hollow hole.

[0029] As an optional embodiment, the connecting member is two, and the two connecting members are arranged on opposite sides of the ion adsorption body, respectively.

[0030] As an optional implementation, there are multiple connectors and multiple ion adsorbents, and the connectors and ion adsorbents are installed in the hollow holes in a one-to-one correspondence.

[0031] Along the first direction, a plurality of the connectors are stacked sequentially.

[0032] As an optional implementation, the connector and the ion adsorbent are connected to form an adsorption component together.

[0033] The ion adsorption device further includes a first support and a second support, which are sealed on opposite sides of the adsorption member along the first direction.

[0034] Both the first support member and the second support member have a second connecting hole, which is used for liquid flow.

[0035] As an optional implementation, along the second direction, the second connecting hole of the first support member and the second connecting hole of the second support member are misaligned; the second direction intersects the first direction.

[0036] As an optional implementation, the thickness of the connector is greater than or equal to 0.1 mm and less than or equal to 1 mm.

[0037] And / or, the connectors include polytetrafluoroethylene (PTFE) components, asbestos rubber components, and silicone components.

[0038] As an optional implementation, the first support member includes a polymethyl methacrylate member, a polyvinyl chloride member, and a polypropylene member.

[0039] And / or, the second support member includes a polymethyl methacrylate member, a polyvinyl chloride member, or a polypropylene member.

[0040] Thirdly, this application provides an ion adsorption device, comprising:

[0041] The ion adsorbent described in the second aspect.

[0042] A housing having a accommodating cavity, wherein the ion adsorbent is located in the accommodating cavity.

[0043] The housing has an inlet and an outlet, the outlet being connected to the connecting tube of the ion adsorbent and the externally connected end; the inlet is used to supply liquid into the accommodating cavity, and the outlet is used to discharge the liquid.

[0044] Fourthly, this application provides an ion extraction system, including the ion adsorption device described in the second aspect; and / or the ion adsorption device described in the third aspect.

[0045] This application provides an ion adsorbent, an ion adsorption device, and an ion extraction system. The ion adsorbent includes a spacer and an ion adsorption membrane. Along a first direction, the ion adsorption membrane is stacked on at least one side of the spacer. The ion adsorption membrane and the spacer are at least partially in contact. The spacer provides support for the ion adsorption membrane, ensuring a stable contact and improving the stability of the ion adsorbent. The arrangement of the ion adsorption membrane and the spacer allows both opposite surfaces of the ion adsorption membrane along the first direction to contact the liquid, increasing the contact area between the membrane and the liquid and providing more ion adsorption sites, thereby improving ion adsorption efficiency. Attached Figure Description

[0046] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0047] Figure 1 This is a schematic diagram of the ion adsorbent provided in the embodiments of this application;

[0048] Figure 2 This is a schematic diagram of the first type of ion adsorption device provided in the embodiments of this application;

[0049] Figure 3 An exploded view of the first ion adsorption device provided in the embodiments of this application;

[0050] Figure 4 A schematic diagram illustrating the connection between the connector and the ion adsorbent in the ion adsorption device provided in this application embodiment;

[0051] Figure 5 for Figure 4 Exploded view of the structure in the image;

[0052] Figure 6 This is a schematic diagram of the second ion adsorption device provided in the embodiments of this application;

[0053] Figure 7 This is a cross-sectional view of a second ion adsorption device provided in an embodiment of this application.

[0054] Explanation of reference numerals in the attached figures:

[0055] 100-ion adsorbent;

[0056] 110 - Separator; 120 - Ion adsorption membrane;

[0057] 130 - Connecting pipe; 131 - First connecting hole;

[0058] 200-ion adsorption device;

[0059] 210 - Connector; 211 - Hole;

[0060] 220 - First support member; 221 - Second support member; 222 - Second connecting hole;

[0061] 230 - Housing. Detailed Implementation

[0062] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0063] First, see Figure 1 In this embodiment of the application, the first direction is defined as the P direction, which is along the thickness direction of the ion adsorption membrane 120.

[0064] With the continuous development of new energy sources, lithium batteries have become the mainstream power source. In related technologies, ion sieves are commonly used to extract lithium ions from salt lakes. Common ion sieves include granular ion sieves and membrane ion sieves. With the increasing demand for lithium, there is an urgent need for an adsorption device that can improve the adsorption efficiency of lithium ions.

[0065] Therefore, this application provides an ion adsorbent 100, including a spacer 110 and an ion adsorption membrane 120. The ion adsorption membrane 120 can adsorb different ions depending on its structure. Specifically, the ion adsorbent 100 in this application embodiment can be used to adsorb lithium ions.

[0066] In some embodiments, the ion adsorption membrane 120 is coated onto the mesh 110 by means of an ion adsorbent or bonded to the mesh 110 by an adhesive. The resulting ion adsorbent body 100, due to the fixed connection between the ion adsorption membrane 120 and the mesh 110, and the presence of an adhesive on one side of the ion adsorption membrane 120, suffers from a reduced contact area between the ion adsorption membrane 120 and the liquid, resulting in fewer adsorption sites and making it difficult to improve ion adsorption efficiency.

[0067] To address this issue, in this embodiment, an ion adsorption membrane 120 is stacked on at least one side of a spacer 110 along a first direction (P). The ion adsorption membrane 120 and the spacer 110 are at least partially in contact. Thus, the spacer 110 provides support for the ion adsorption membrane 120, ensuring a stable contact and improving the stability of the ion adsorbent 100. Since the ion adsorption membrane 120 and the spacer 110 are connected in an abutting manner, there is no adhesive between them. This allows both opposite surfaces of the ion adsorption membrane 120 along the first direction (P) to contact the liquid, increasing the contact area between the membrane and the liquid. This provides more ion adsorption sites for adsorbing more ions, thereby improving ion adsorption efficiency. Furthermore, this ion adsorbent 100 is easy to assemble, improving production efficiency and reducing production costs.

[0068] It should be noted that the ion adsorption membrane 120 in this embodiment may be located on one side of the mesh 110 along the first direction (P). Alternatively, ion adsorption membranes 120 may be provided on both sides of the mesh 110 along the first direction (P).

[0069] It should be noted that the ion adsorption membrane 120 in this application can be prepared by electrospinning technology.

[0070] In some embodiments, there are multiple ion adsorption membranes 120, which are stacked along a first direction (P) on at least one side of the spacer 110. In this way, by increasing the number of ion adsorption membranes 120, the contact area between the ion adsorption membranes 120 and the liquid is increased, thereby improving the adsorption efficiency and adsorption effect of the ion adsorbent 100.

[0071] For example, there may be three or more ion adsorption membranes 120. All of the ion adsorption membranes 120 may be located on one side of the mesh 110 along the first direction (P), or a portion of the ion adsorption membranes 120 may be located on one side of the mesh 110 along the first direction (P), and another portion of the ion adsorption membranes 120 may be located on the other side of the mesh 110 along the first direction (P).

[0072] When the mesh 110 is provided with ion adsorption membranes 120 on both sides along the first direction (P), the number of ion adsorption membranes 120 on both sides can be the same or different. This application embodiment does not make specific requirements in this regard.

[0073] In addition, the ion adsorption membrane 120 and the spacer 110 in the embodiments of this application may both be square or both be circular, etc. The embodiments of this application do not make specific requirements in this regard. In particular, the embodiments of this application are described with the ion adsorption membrane 120 and the spacer 110 as square structures.

[0074] Multiple ion adsorption membranes 120 are stacked. When the ion adsorption membranes 120 come into contact with the liquid, some of the ion adsorption membranes 120 may come into contact with each other, resulting in some of the ion adsorption membranes 120 not being in contact with the liquid. Therefore, in an optional embodiment, there are multiple spacers 110, and the spacers 110 and the ion adsorption membranes 120 are stacked and alternately arranged along the first direction (P).

[0075] In this embodiment, by alternating the arrangement of the partition mesh 110 and the ion adsorption membrane 120, the partition mesh 110 provides support for each ion adsorption membrane 120, thereby improving the strength and stability of the ion adsorbent 100. The partition mesh 110 can also separate the ion adsorption membranes 120 to prevent adjacent ion adsorption membranes 120 from sticking together, further increasing the contact area between each ion adsorption membrane 120 and the liquid, improving the utilization rate of the ion adsorption membranes 120, and thus improving the adsorption efficiency of the ion adsorbent 100.

[0076] In some embodiments, along the first direction (P), the orthographic projection of the spacer 110 onto the surface of the ion adsorption membrane 120 is covered by the ion adsorption membrane 120. Thus, by adjusting the dimensions of the spacer 110 and the ion adsorption membrane 120, the supporting and separating effects of the spacer 110 on the ion adsorption membrane 120 can be adjusted, thereby achieving adjustment of the contact area between the ion adsorption membrane 120 and the liquid, thereby enhancing the adsorption effect of the ion adsorbent 100 and ensuring the adsorption efficiency of the ion adsorbent 100.

[0077] It should be noted that in the embodiments of this application, the planar size of the mesh 110 may be smaller than the planar size of the ion adsorption membrane 120, or the planar size of the mesh 110 and the planar size of the ion adsorption membrane 120 may be the same. The ion adsorption membrane 120 may cover the orthogonal projection of the mesh 110 along the first direction (P) onto the plane where the ion adsorption membrane 120 is located.

[0078] In some embodiments, the thickness of the mesh 110 is greater than or equal to 0.02 mm and less than or equal to 1 mm.

[0079] For example, the thickness of the mesh 110 can be 0.02mm, 0.05mm, 0.08mm, 0.1mm, 0.3mm, 0.5mm, 0.7mm, 0.9mm, 1mm, etc. Any thickness of the mesh 110 that meets the above numerical range is acceptable, and this application embodiment does not make specific requirements in this regard.

[0080] When the thickness of the separator 110 is less than 0.02 mm, its strength is low, making it prone to damage. Furthermore, during the lamination process with the ion adsorption membrane 120, the separator 110 may puncture the membrane. A thinner separator 110 increases its manufacturing difficulty, making it difficult to reduce the cost of the ion adsorbent 100. While a thickness greater than 1 mm improves the separator's strength and stability, it also increases the thickness of the ion adsorbent 100. Therefore, by selecting a separator 110 with an appropriate thickness, while ensuring sufficient strength and proper separation of the separator from the ion adsorption membrane 120, the manufacturing difficulty and cost of the ion adsorbent 100 can be reduced, production efficiency improved, and the space occupied by the ion adsorbent 100 can be decreased.

[0081] In some implementations, the mesh count of the screen 110 is greater than or equal to 10 and less than or equal to 100.

[0082] For example, the mesh count of the screen 110 can be 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, etc. Any mesh count of the screen 110 that meets the above numerical range is acceptable, and this application embodiment does not require it.

[0083] It is easy to understand that such a separator 110 has relatively good liquid permeability, facilitating the flow of liquid within the ion adsorbent 100, thereby increasing the liquid throughput of the ion adsorbent 100 and improving the efficiency and effectiveness of ion adsorption. Simultaneously, during liquid flow, the gaps in the separator 110 disperse the liquid's flow path, ensuring uniform distribution within the ion adsorbent 100. This increases the contact area between the ion adsorption membrane 120 and the liquid, further enhancing the processing efficiency and effectiveness of the ion adsorbent 100, and ultimately improving the adsorption efficiency and effect.

[0084] In some embodiments, the mesh 110 includes a polyamide mesh, a polyvinyl chloride mesh, or a polypropylene mesh.

[0085] It should be noted that when there are multiple partitions 110, some of the partitions 110 can be polyamide mesh; some of the partitions 110 can be polyvinyl chloride mesh; and some of the partitions 110 can also be polypropylene mesh.

[0086] Alternatively, all of the spacers 110 may be polyamide mesh; all of the spacers 110 may be polyvinyl chloride mesh; all of the spacers 110 may be polypropylene mesh. Or, a portion of the spacers 110 may be polyamide mesh, and another portion may be polyvinyl chloride mesh or polypropylene mesh. This application does not specify the particular combination of the multiple spacers 110 in the embodiments.

[0087] In some embodiments, the thickness of the ion adsorption membrane 120 is greater than or equal to 0.1 mm and less than or equal to 10 mm.

[0088] For example, the thickness of the ion adsorption membrane 120 can be 0.1 mm, 0.3 mm, 0.5 mm, 0.7 mm, 0.9 mm, 1 mm, 3 mm, 5 mm, 7 mm, 9 mm, or 10 mm. Any thickness of the ion adsorption membrane 120 that meets the above numerical range is acceptable, and this embodiment does not impose specific requirements on it.

[0089] It is easy to understand that a thicker ion adsorption membrane 120 typically has a larger adsorption capacity, providing more adsorption sites. However, an excessively thick ion adsorption membrane 120 results in an excessively long ion transport path, which reduces adsorption efficiency. Therefore, an ion adsorption membrane 120 with a thickness between 0.1 mm and 10 mm provides more adsorption sites and has good liquid permeability, increasing the liquid throughput of the ion adsorbent 100 and thus improving its adsorption efficiency.

[0090] In some embodiments, the bulk density of the ion adsorbent 100 is greater than or equal to 0.1 g / ml and less than or equal to 5 g / ml.

[0091] For example, the bulk density of the ion adsorbent 100 can be 0.1 g / ml, 0.5 g / ml, 0.6 g / ml, 0.7 g / ml, 2 g / ml, 3 g / ml, 4 g / ml, 5 g / ml, etc. Any ion adsorbent 100 that meets the above numerical range is acceptable, and this application embodiment does not make specific requirements in this regard.

[0092] In this embodiment, when the bulk density of the ion adsorbent 100 is less than 0.1 g / ml, the gaps between the ion adsorption membranes 120 are relatively large to allow more liquid to pass through, increasing the liquid processing capacity of the ion adsorbent 100. However, the number of ion adsorption membranes 120 in the ion adsorbent 100 is small, resulting in fewer ion adsorption sites provided by the ion adsorbent 100, thus reducing the ion adsorption efficiency and effect. When the bulk density of the ion adsorbent 100 is greater than 5 g / ml, the number of ion adsorption membranes 120 in the ion adsorbent 100 is large, providing more ion adsorption sites and increasing the ion adsorption capacity. However, the spacing between adjacent ion adsorption membranes 120 is relatively compact, leading to decreased liquid flow within the ion adsorbent 100 and a reduction in the ion adsorption efficiency and effect. Therefore, the ion adsorbent 100 in this embodiment of the application, with a packing density of 0.1 g / ml to 5 g / ml, can meet both the mechanical strength requirements of the ion adsorbent 100 and the permeability of the ion adsorbent 100 to the liquid, thereby ensuring the adsorption efficiency of ions in the liquid.

[0093] In some embodiments, the specific surface area of ​​the ion adsorption membrane 120 is greater than or equal to 2 m². 2 / g, and less than or equal to 50m 2 / g.

[0094] For example, the specific surface area of ​​the ion adsorption membrane 120 can be 2m². 2 / g、3m 2 / g、8m 2 / g, 10m 2 / g, 15m 2 / g、20m 2 / g、23m 2 / g、25m 2 / g、29m 2 / g、32m 2 / g、40m 2 / g、46m 2 / g, 50m 2 / g, etc., any specific surface area of ​​the ion adsorption membrane 120 that meets the above numerical range is acceptable, and the embodiments of this application do not make specific requirements in this regard.

[0095] It is easy to understand that the ion adsorption membrane 120 has a large specific surface area and more adsorption sites to adsorb more ions, thereby increasing the adsorption capacity. At the same time, since the ion adsorption membrane 120 is in full contact with the liquid, the amount of adsorption per unit time can be further increased, thereby improving the adsorption efficiency and adsorption effect.

[0096] In some implementations, combined Figure 1 andFigure 6 The spacer 110 and the ion adsorption membrane 120 are stacked and then wound together to form a wound structure. Within this wound structure, the mutual support between the stacked spacer 110 and the ion adsorption membrane 120 improves the mechanical strength and structural stability of the ion adsorbent 100, resisting physical stress and deformation. Simultaneously, within a limited space, the spatial proportion of the ion adsorbent 100 is reduced, and the contact area between the ion adsorbent 100 and the liquid is increased, thereby increasing the adsorption efficiency.

[0097] Combination Figure 6 and Figure 7 In some embodiments, the ion adsorbent 100 further includes a connecting tube 130, with a winding structure wrapping around the outer wall of the connecting tube 130. In this way, the connecting tube 130 provides support for the winding structure, thereby improving the strength and structural stability of the ion adsorbent 100 and preventing the ion adsorbent 100 from being squeezed and deformed.

[0098] In some embodiments, one end of the connecting pipe 130 is connected to the outside, and the connecting pipe 130 has a first connecting hole 131 located on the pipe wall of the connecting pipe 130. The first connecting hole 131 is used to allow liquid in the winding structure to flow into the connecting pipe 130 and be discharged through the end of the connecting pipe 130 that is connected to the outside.

[0099] It is easy to understand that during the use of the winding structure, the liquid can flow from the outside of the winding structure to the connecting pipe 130 and be discharged through the end of the connecting pipe 130. In this process, the liquid passes through each ion adsorption membrane 120 layer by layer, so that the liquid and each ion adsorption membrane 120 of the winding structure are in full contact, thereby improving the adsorption efficiency of the ion adsorbent 100.

[0100] In some embodiments, there are multiple first connecting holes 131, which are arranged in an array on the wall of the connecting tube 130. In this way, liquid enters the connecting tube 130 through the multiple first connecting holes 131 and is discharged through the connecting tube 130, thereby increasing the liquid handling capacity of the winding structure and improving the adsorption efficiency of the ion adsorbent 100.

[0101] It is easy to understand that the multiple first connecting holes 131 can be arranged in an array along the axial direction of the connecting pipe 130. For example, the multiple first connecting holes 131 can be arranged in a "I"-shaped array along the axial direction of the connecting pipe 130. Alternatively, the multiple first connecting holes 131 can be arranged in a sequentially spaced array along the circumference of the connecting pipe 130, and then arranged in an array along the axial direction of the connecting pipe 130. The embodiments of this application do not specify the array arrangement of the multiple first connecting holes 131.

[0102] The ion adsorbent 100 in this embodiment includes a spacer 110 and an ion adsorption membrane 120. Along a first direction (P), the ion adsorption membrane 120 is stacked on at least one side of the spacer 110. The ion adsorption membrane 120 and the spacer 110 are at least partially in contact. The spacer 110 provides support for the ion adsorption membrane 120, ensuring a stable contact and improving the stability of the ion adsorbent 100. The arrangement of the ion adsorption membrane 120 and the spacer 110 allows both opposite surfaces of the ion adsorption membrane 120 along the first direction (P) to contact the liquid, increasing the contact area between the ion adsorption membrane 120 and the liquid and providing more ion adsorption sites, thus facilitating ion adsorption and improving ion adsorption efficiency.

[0103] Secondly, combining Figures 1-6 This application embodiment can also provide an ion adsorption device 200, including: an ion adsorbent 100 and a connector 210, wherein the ion adsorbent 100 is fixed on the connector 210 along a first direction (P).

[0104] It should be noted that in the embodiments of this application, the ion adsorbent membrane 120 and the spacer 110 in the ion adsorbent 100 are stacked. The ion adsorbent 100 is fixed on the connector 210 to form an adsorption component, which can be directly installed in the housing.

[0105] There are various ways to connect the ion adsorbent 100 to the connector 210. As one optional embodiment, the connector 210 has a perforated hole 211. The ion adsorbent 100 is connected to one side of the connector 210 along the first direction (P), and the ion adsorbent 100 and the perforated hole 211 are at least partially opposite each other. In this way, the connector 210 can provide support for the ion adsorbent 100, the perforated hole 211 can increase the contact area between the ion adsorbent 100 and the liquid, and the liquid fluid can more easily contact the surface of the ion adsorbent 100 through the perforated hole 211, thereby improving the adsorption efficiency of the ion adsorption device 200.

[0106] Combination Figure 4 and Figure 5In some embodiments, the connector 210 has a perforated hole 211, and the ion adsorbent 100 is disposed in the perforated hole 211 and connected to the hole wall of the perforated hole 211. This placement of the ion adsorbent 100 within the perforated hole 211 provides better mechanical support, preventing the adsorbent from moving or falling off during use, thereby improving the overall stability and durability of the device. Since the ion adsorbent 100 is directly disposed within the hole, the structure of the connector 210 can be utilized more effectively, reducing the number of connecting parts between the ion adsorbent 100 and the connector 210, lowering the assembly cost of the ion adsorption device 200, and simultaneously reducing the space occupied by the ion adsorption device 200.

[0107] In some implementations, combined Figure 2 and Figure 3 There are two connectors 210, which are respectively disposed on opposite sides of the ion adsorbent 100. The two connectors 210 are disposed on opposite sides of the ion adsorbent 100 and are fixedly connected by fasteners to ensure the connection of the ion adsorption device 200 is stable, thereby preventing the ion adsorption device 200 from becoming loose during use.

[0108] In some embodiments, there are multiple connectors 210 and multiple ion adsorbents 100, with each connector 210 and ion adsorbent 100 correspondingly installed in the perforated hole 211; each connector 210 and its corresponding ion adsorbent 100 are connected to form an adsorption component. Multiple connectors 210 are stacked sequentially along the first direction (P). That is, multiple adsorption components are stacked along the first direction (P). Thus, by stacking multiple adsorption components, the contact area between the ion adsorption device 200 and the liquid is increased, and more adsorption sites are provided, resulting in higher adsorption efficiency for the ion adsorption device 200.

[0109] Combination Figure 2 and Figure 3 The connector 210 and the ion adsorbent 100 are connected to form an adsorption component. The ion adsorption device 200 also includes a first support 220 and a second support 221, which are sealed on opposite sides of the adsorption component along a first direction (P). In this way, a sealed environment for liquid flow is formed by connecting the first support 220, the second support 221, and the adsorption component.

[0110] In this embodiment, both the first support 220 and the second support 221 have a second connecting hole 222 for allowing liquid to flow. Thus, the liquid can flow into the ion adsorption device 200 through the second connecting hole 222 on the first support 220, and during the flow, it comes into contact with the ion adsorbent 100 to adsorb ions. The liquid can then be discharged through the second connecting hole 222 on the second support 221.

[0111] Alternatively, the liquid can flow into the interior of the ion adsorption device 200 through the second connecting hole 222 on the second support member 221, and come into contact with the ion adsorbent 100 during the flow process, so as to adsorb ions through the ion adsorbent 100. The liquid is finally discharged through the second connecting hole 222 on the first support member 220.

[0112] It is easy to understand that this ion adsorption device 200 can be used as an independent finished component and connected to the liquid pipeline separately, which can improve the adsorption efficiency and facilitate connection with the liquid pipeline.

[0113] In some implementations, see Figure 2 Along the second direction, the second connecting holes 222 of the first support member 220 and the second connecting holes 222 of the second support member 221 are staggered; the second direction intersects the first direction (P). Thus, by staggering the second connecting holes 222 on the first support member 220 and the second connecting holes 222 on the second support member 221, the flow path of the liquid in the ion adsorption device 200 is adjusted, increasing the flow time of the liquid in the ion adsorption device 200, allowing the liquid and the ion adsorbent 100 to fully contact, thereby improving adsorption efficiency and effect.

[0114] In this embodiment of the application, the thickness of the connector 210 is greater than or equal to 0.1 mm and less than or equal to 1 mm.

[0115] For example, the thickness of the connector 210 can be 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1mm, etc. Any thickness of the connector 210 that meets the above numerical range requirements is acceptable, and this application embodiment does not require it.

[0116] In the embodiments of this application, the connector 210 includes a polytetrafluoroethylene (PTFE) component, an asbestos rubber component, and a silicone component. It is easy to understand that when there are multiple connectors 210, some of the connectors 210 may be PTFE components, some may be asbestos rubber components, and some may be silicone components. Alternatively, all of the connectors 210 may be PTFE components, all of the connectors 210 may be asbestos rubber components, and all of the connectors 210 may be silicone components. This application embodiment does not impose specific requirements on this.

[0117] In some embodiments, the first support 220 includes a polymethyl methacrylate (PMMA) component, a polyvinyl chloride (PVC) component, and a polypropylene component; and / or, the second support 221 includes a PMMA component, a PVC component, and a polypropylene component.

[0118] It is understandable that the first support component 220 can be a polymethyl methacrylate (PMMA) component, a polyvinyl chloride (PVC) component, or a polypropylene component. The second support component 221 can be a PMMA component, a PVC component, or a polypropylene component.

[0119] When the first support member 220 is a polymethyl methacrylate (PMMA) component, the second support member 221 can be a PMMA component, a polyvinyl chloride (PVC) component, or a polypropylene component. When the first support member 220 is a PVC component, the second support member 221 can be a PMMA component, a PVC component, or a polypropylene component. This application embodiment does not specify requirements for the material combination of the first support member 220 and the second support member 221.

[0120] Combination Figure 6 and Figure 7 This application embodiment can also provide an ion adsorption device 200, including: an ion adsorbent 100 and a housing 230. The housing 230 has a receiving cavity, and the ion adsorbent 100 is located in the receiving cavity; the housing 230 has an inlet and an outlet, the outlet being connected to the connecting pipe 130 of the ion adsorbent 100 and an externally connected end; the inlet is used to supply liquid into the receiving cavity, and the outlet is used to discharge liquid.

[0121] It should be noted that the ion adsorbent 100 in this embodiment is the wound structure described in the first aspect above. The wound structure is placed in the housing 230 to protect the ion adsorbent 100. Simultaneously, liquid is introduced into the accommodating cavity through the inlet of the housing 230. Within the wound structure, the liquid flows sequentially from the outside to the inside through each ion adsorption membrane 120 until it reaches the connecting tube 130. Finally, it enters the connecting tube 130 through the first connecting hole 131 and exits through the outlet of the housing 230. During this process, as the liquid flows, ions are adsorbed onto the adsorption sites of each ion adsorption membrane 120.

[0122] In some embodiments, the ion adsorption device 200 in this application can be used as an independent finished component and connected separately to the liquid pipeline, which improves the adsorption efficiency and facilitates connection with the liquid pipeline.

[0123] In some embodiments, the inlet and outlet on the housing 230 may be located on different shell walls of the housing 230.

[0124] In addition, embodiments of this application may also provide an ion extraction system, including the ion adsorption device 200 provided in the second and / or third aspects.

[0125] It should be noted that the liquid pipelines of the two ion adsorption devices 200 in the ion extraction system can be connected in series or in parallel, but this application embodiment does not require this.

[0126] Alternatively, the ion extraction system may include only the ion adsorption device 200 provided by the second aspect, or only the ion adsorption device 200 provided by the third party.

[0127] It should be noted that the terms "one embodiment," "embodiment," "exemplary embodiment," "some embodiments," etc., mentioned in the specification indicate that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.

[0128] Generally speaking, terms should be understood at least in part by their use in context. For example, at least in part by context, the term "one or more" as used in the text can be used to describe any feature, structure, or characteristic of the singular meaning, or a combination of features, structures, or characteristics of the plural meaning. Similarly, at least in part by context, terms such as "a" or "the" can also be understood to convey either singular or plural usage.

[0129] It should be readily understood that the terms “on,” “above,” and “on top of” in this application should be interpreted in the broadest possible sense, such that “on” means not only “directly on something” but also “on something” with an intermediate feature or layer therebetween, and that “above” or “on top of” means not only “on something” but also “on something” without an intermediate feature or layer therebetween (i.e., directly on something).

[0130] Furthermore, for ease of explanation, spatially relative terms such as "below," "below," "under," "above," and "above" may be used to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation other than those shown in the figures. The device may have other orientations (rotated 90° or in other orientations), and the spatially relative descriptive terms used herein may be interpreted accordingly.

[0131] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An ion adsorbent, characterized in that, include: Separator (110); An ion adsorption membrane (120) is stacked on at least one side of the spacer (110) along a first direction, and the ion adsorption membrane (120) and the spacer (110) are at least partially in contact; the first direction is along the thickness direction of the ion adsorption membrane (120).

2. The ion adsorbent according to claim 1, characterized in that, There are multiple ion adsorption membranes (120), and the multiple ion adsorption membranes (120) are stacked along the first direction on at least one side of the mesh (110).

3. The ion adsorbent according to claim 2, characterized in that, There are multiple meshes (110), and the meshes (110) and the ion adsorption membrane (120) are arranged alternately and stacked along the first direction.

4. The ion adsorbent according to any one of claims 1-3, characterized in that, Along the first direction, the orthographic projection of the mesh (110) onto the surface where the ion adsorption membrane (120) is located is covered by the ion adsorption membrane (120).

5. The ion adsorbent according to any one of claims 1-3, characterized in that, It also includes at least one of the following: The thickness of the mesh (110) is greater than or equal to 0.02 mm and less than or equal to 1 mm; The mesh count of the partition (110) is greater than or equal to 10 and less than or equal to 100; The mesh (110) includes polyamide mesh, polyvinyl chloride mesh, and polypropylene mesh; The thickness of the ion adsorption membrane (120) is greater than or equal to 0.1 mm and less than or equal to 10 mm. The bulk density of the ion adsorbent (100) is greater than or equal to 0.1 g / ml and less than or equal to 5 g / ml; The specific surface area of ​​the ion adsorption membrane (120) is greater than or equal to 2 m². 2 / g, and less than or equal to 50m 2 / g.

6. The ion adsorbent according to any one of claims 1-3, characterized in that, The spacer (110) and the ion adsorption membrane (120) are stacked and then wound together to form a wound structure.

7. The ion adsorbent according to claim 6, characterized in that, It also includes a connecting tube (130), the winding structure wrapping around the outer wall of the connecting tube (130); One end of the connecting pipe (130) is connected to the outside; the connecting pipe (130) has a first connecting hole (131), which is located on the pipe wall of the connecting pipe (130). The first connecting hole (131) is used to allow the liquid in the winding structure to flow into the connecting pipe (130) and be discharged through the end of the connecting pipe (130) that is connected to the outside.

8. The ion adsorbent according to claim 7, characterized in that, There are multiple first connecting holes (131), and the multiple first connecting holes (131) are arranged in an array on the wall of the connecting pipe (130).

9. An ion adsorption device, characterized in that, include: The ion adsorbent (100) according to any one of claims 1-5; The connector (210) is used to fix the ion adsorbent (100) along the first direction.

10. The ion adsorption device according to claim 9, characterized in that, The connector (210) has a perforated hole (211), and the ion adsorbent (100) is connected to one side of the connector (210) along a first direction, with the ion adsorbent (100) and the perforated hole (211) at least partially opposite each other.

11. The ion adsorption device according to claim 9, characterized in that, The connector (210) has a perforated hole (211), and the ion adsorbent (100) is disposed in the perforated hole (211) and connected to the hole wall of the perforated hole (211).

12. The ion adsorption device according to claim 9, characterized in that, There are two connectors (210), and the two connectors (210) are respectively disposed on opposite sides of the ion adsorbent (100).

13. The ion adsorption device according to claim 11, characterized in that, There are multiple connectors (210) and multiple ion adsorbents (100). The connectors (210) and the ion adsorbents (100) are installed in the hollow holes (211) in a one-to-one correspondence. Along the first direction, a plurality of the connectors (210) are stacked in sequence.

14. The ion adsorption device according to any one of claims 9-13, characterized in that, The connector (210) and the ion adsorbent (100) are connected to form an adsorption component; The ion adsorption device (200) further includes a first support (220) and a second support (221), wherein the first support (220) and the second support (221) are sealed on opposite sides of the adsorption member along the first direction; Both the first support member (220) and the second support member (221) have a second connecting hole (222) for supplying liquid flow.

15. The ion adsorption device according to claim 14, characterized in that, Along the second direction, the second connecting hole (222) of the first support member (220) and the second connecting hole (222) of the second support member (221) are misaligned; The second direction intersects with the first direction.

16. The ion adsorption device according to any one of claims 9-13, characterized in that, The thickness of the connector (210) is greater than or equal to 0.1 mm and less than or equal to 1 mm; And / or, the connector (210) includes a polytetrafluoroethylene component, an asbestos rubber component, or a silicone component.

17. The ion adsorption device according to claim 14, characterized in that, The first support member (220) includes a polymethyl methacrylate member, a polyvinyl chloride member, and a polypropylene member; And / or, the second support (221) includes a polymethyl methacrylate component, a polyvinyl chloride component, or a polypropylene component.

18. An ion adsorption device, characterized in that, include: The ion adsorbent (100) according to any one of claims 6-8; The housing (230) has a receiving cavity, and the ion adsorbent (100) is located in the receiving cavity; The housing (230) has an inlet and an outlet, the outlet being connected to the connecting tube (130) of the ion adsorbent (100) and an externally connected end; the inlet is used to supply liquid into the accommodating cavity, and the outlet is used to discharge the liquid.

19. An ion extraction system, characterized in that, Includes the ion adsorption device (200) according to any one of claims 9-17; and / or the ion adsorption device (200) according to claim 18.

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