An ion extraction and rapid crystallization apparatus and method based on adsorption

Abstract

The application discloses an ion extraction and rapid crystallization device and method based on an adsorption method, and at least comprises a medium channel, a crystallization frame and an adsorption accessory, the medium channel is provided with an opening for the crystallization frame to enter, the crystallization frame is provided with a through hole for the adsorption accessory to penetrate, and the adsorption accessory can form staggered through holes in the crystallization frame when penetrating into the crystallization frame; a hole potential field effect is formed on the surface of the formed through hole, high-concentration ion crystals in a solution are adsorbed on the surface of the adsorption accessory, and due to the hole effect and the dense holes formed by the staggered adsorption accessory on the crystallization frame, high-concentration crystals in the solution can be rapidly crystallized; the purpose of ion extraction and rapid crystallization is achieved. Compared with the prior art, the crystallization speed can be improved by several times. Meanwhile, the device can be quickly assembled, can be recycled for many times, can efficiently extract various elements in high-concentration solutions, has low cost, and is suitable for application in various impurity solutions.

Description

Technical Field

[0001] This invention relates to the field of ion extraction from solution, and particularly to an ion extraction and rapid crystallization apparatus and method based on adsorption. Background Technology

[0002] The separation and purification of impurity ions has always been a pressing issue in daily life, such as the extraction of lithium ions from salt lakes. Lithium is one of the most important elements in the new energy industry and has received widespread attention. The Earth's lithium ions are mainly stored in salt lakes, making rapid industrial lithium extraction an inevitable trend in production. Various methods exist for lithium extraction and purification from salt lakes, such as the secondary crystallization method shown in patent CN116715308. While this method yields high purity and significantly improves product quality, the crystal growth rate is slow, which is still some distance from large-scale practical applications. Therefore, a scheme employing adsorption-based ion extraction and rapid crystallization can greatly increase the ion extraction rate and has significant industrial application value. Summary of the Invention

[0003] The purpose of this invention is to provide an apparatus and method for ion extraction and rapid crystallization based on adsorption, addressing the aforementioned shortcomings and solving the problem of slow ion extraction rate based on secondary crystallization.

[0004] This invention is achieved through the following scheme:

[0005] An ion extraction and rapid crystallization apparatus based on adsorption method includes at least a medium channel, a crystallization frame, and an adsorbent. The medium channel is provided with an opening for the crystallization frame to enter. The crystallization frame is provided with through holes for the adsorbent to pass through. When the adsorbent is inserted into the crystallization frame, it can form staggered through holes in the crystallization frame.

[0006] Based on the structure of the above-mentioned ion extraction and rapid crystallization device based on adsorption method, the crystallization frame is a hollow frame structure. A first through hole is provided at the upper and lower ends of the crystallization frame. Multiple first through holes are evenly arranged along the length direction of the upper and lower ends of the crystallization frame, and the first through holes at the upper and lower ends of the crystallization frame correspond one-to-one. The line connecting the center of the first through hole at its end plate is set off from the center line of its end plate.

[0007] Based on the structure of the above-mentioned ion extraction and rapid crystallization device based on adsorption method, the crystallization frame is provided with second through holes at both ends. Multiple second through holes are uniformly arranged along the length direction of the left and right ends of the crystallization frame, and the second through holes at the left and right ends of the crystallization frame correspond one-to-one. The line connecting the center of the second through hole at its end plate is offset from the center line of its end plate.

[0008] Based on the structure of the above-mentioned ion extraction and rapid crystallization device based on adsorption, when the adsorbent is inserted into the first through holes at the top and bottom ends, it can be staggered from the adsorbent inserted into the second through holes at the left and right ends, so that the adsorbents inserted in different directions can form staggered holes.

[0009] Based on the structure of the above-mentioned ion extraction and rapid crystallization device based on adsorption method, the crystallization frame is further provided with holding parts on both sides, and the bottom of the holding parts is provided with flexible pads; the holding parts are symmetrically arranged on both sides of the crystallization frame.

[0010] Based on the structure of the above-mentioned ion extraction and rapid crystallization device based on adsorption, the adsorption element is a broom-shaped structure, and the adsorption element includes a support rod and an adsorption rod; multiple adsorption rods are arranged along the length direction of the support rod, and adjacent adsorption rod supports are arranged in parallel; the density of the adsorption rods is the same as the density of the first through hole or the second through hole.

[0011] Based on the structure of the above-mentioned ion extraction and rapid crystallization device based on adsorption method, the medium channel is provided with a heating structure, a cooling structure and a temperature holding structure along its length; the heating structure and the cooling structure are arranged along the inner surface of the medium channel, and the temperature holding structure is located on the outer side of the medium channel.

[0012] Based on the structure of the above-mentioned ion extraction and rapid crystallization device based on adsorption method, the heating structure is an electric heating grid, which is disposed on the inner surface of the medium channel; the cooling structure is a water-cooled pipeline, which is wound around the outer wall of the medium channel; and the temperature holding structure is heat insulation cotton, which is disposed on the outer wall of the medium channel.

[0013] Based on the structure of the above-mentioned ion extraction and rapid crystallization device based on adsorption method, a temperature detector is provided inside the medium channel, and multiple temperature detectors are arranged in a ring around the circumferential position of the medium channel.

[0014] This invention also provides a method for ion extraction and rapid crystallization based on adsorption, specifically including the following steps:

[0015] Step 1: Select a crystallizer and adsorption element of appropriate size according to the ions to be adsorbed;

[0016] Step 2: Use an electrostatic generator to make the adsorbents self-electrified, insert the adsorbents into the crystallization frame to form dense holes; make the spherical electrostatic field around the holes formed by the staggered adsorbents; and place the entire crystallization frame into the medium channel, while slowly passing a supersaturated solution of ions to be adsorbed into the medium channel.

[0017] Step 3: Based on the actual temperature on site, select to activate the heating or cooling structure to accelerate the adsorption and crystallization process;

[0018] Step 4: Remove the crystallization rack and scrape off the crystallization aggregate on the settling rack.

[0019] As described above, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0020] 1. When ion extraction from a solution is required, a supersaturated solution is slowly flowed through the medium channel. Because the adsorbent forms staggered through-holes at the center of the crystallizer, a pore potential field effect is created on the surface of these through-holes. This effect adsorbs high-concentration ion crystals from the solution onto the surface of the adsorbent. Due to the pore effect and the densely packed pores formed by the adsorbent on the crystallizer, the high-concentration crystals in the solution crystallize rapidly, achieving both ion extraction and rapid crystallization. Compared to existing technologies, this method can increase the crystallization speed by several times. Furthermore, the device in this solution can be quickly assembled and repeatedly circulated, efficiently extracting various elements from high-concentration solutions at a low cost, making it suitable for various impurity solutions.

[0021] 2. This method is low in cost, highly practical, and flexible. It is applicable to a variety of high-concentration impurity ions and has high industrial value. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a top view of the crystallization frame in this invention.

[0024] Figure 3 This is a side view of the crystallization frame in this invention.

[0025] Figure 4 This is a schematic diagram of the adsorption element in the present invention;

[0026] Figure descriptions: 1. Medium channel; 2. Crystallization frame; 3. Adsorption element; 4. Center line; 21. First through hole; 22. Second through hole; 23. Holding part; 24. Flexible gasket; 31. Support rod; 32. Adsorption rod; 51. Heating structure; 52. Cooling structure; 53. Temperature holding structure; 54. Temperature detector. Detailed Implementation

[0027] All features disclosed in this specification, or steps in all methods or processes disclosed herein, may be combined in any way, except for mutually exclusive features and / or steps.

[0028] Any feature disclosed in this specification (including any appended claims and abstract) may be replaced by other equivalent or similar features, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.

[0029] In the description of this invention, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0030] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature.

[0031] Example 1

[0032] like Figure 1 and 4 As shown, the present invention provides a technical solution:

[0033] An ion extraction and rapid crystallization device based on adsorption method includes, but is not limited to, a medium channel 1, a crystallization frame 2, and an adsorbent 3. The medium channel 1 is provided with an opening for the crystallization frame 2 to enter; the crystallization frame 2 is provided with through holes for the adsorbent 3 to pass through, and the adsorbent 3 can form staggered through holes in the crystallization frame 2 when it is inserted into the crystallization frame 2.

[0034] Based on the above structure, when ion extraction from a solution is required, the supersaturated solution flows slowly through the medium channel 1. Because the adsorbent 3 forms staggered through-holes at the center of the crystallizer 2, a pore potential field effect is created on the surface of these through-holes. This effect adsorbs high-concentration ion crystals from the solution onto the surface of the adsorbent 3. Due to the pore effect and the densely packed pores formed by the adsorbent 3 on the crystallizer 2, the high-concentration crystals in the solution crystallize rapidly, achieving both ion extraction and rapid crystallization. Compared to existing technologies, this method can increase the crystallization speed by several times. Furthermore, the device in this solution can be quickly assembled and repeatedly circulated, efficiently extracting various elements from high-concentration solutions at a low cost, making it suitable for various impurity solutions.

[0035] As an example, the crystallization frame 2 is a hollow frame structure. A first through hole 21 is provided at the upper and lower ends of the crystallization frame 2. Multiple first through holes 21 are evenly arranged along the length direction of the upper and lower ends of the crystallization frame 2, and the first through holes 21 at the upper and lower ends of the crystallization frame 2 correspond one to one. The first through hole 21 is set off from the center line 4 of the end plate where it is located.

[0036] Second through holes 22 are provided at both ends of the crystallization frame 2. Multiple second through holes 22 are evenly arranged along the length direction of both ends of the crystallization frame 2, and the second through holes 22 at both ends of the crystallization frame 2 correspond one to one. The line connecting the center of the second through hole 22 to the center of the end plate is offset from the center line 4 of the end plate.

[0037] When the adsorbent 3 is inserted into the first through hole 21 at the top and bottom ends, it can be staggered from the adsorbent 3 inserted into the second through hole 22 at the left and right ends, so that the adsorbent 3 inserted in different directions can form staggered holes.

[0038] Based on the above structure, the first through holes 21 at the top and bottom ends and the second through holes 22 at the left and right ends are set to deviate from the center line 4 in opposite directions, providing space for the adsorption elements 3 to intersect, so that the adsorption elements 3 can form cross holes, and finally form a pore potential field effect.

[0039] As an example, the crystallization rack 2 may also be provided with holding parts 23 on both sides, and a flexible pad 24 is provided at the bottom of the holding parts; the holding parts are symmetrically arranged on both sides of the crystallization rack 2.

[0040] Based on the above structure, the entire crystallization rack 2 can be quickly removed using the gripping part 23, facilitating the removal and insertion of the adsorption element 3. The flexible pad 24 can contact the side wall of the medium channel 1, which on the one hand can avoid damage to the medium channel 1, and on the other hand can elevate the gripping part 23, making it easier for the hand to insert and pick up the item.

[0041] As an example, the adsorption element 3 can be a broom-shaped structure, which can specifically include a support rod 31 and an adsorption rod 32; multiple adsorption rods 32 are provided along the length direction of the support rod 31, and the supports of adjacent adsorption rods 32 are arranged in parallel.

[0042] The density of the adsorption rods 32 is the same as that of the first through hole 21 or the second through hole 22.

[0043] Based on the above structure, by inserting the adsorption rod 32 into the first through hole 21 or the second through hole 22 to form dense holes, and at the same time, the support rod 31 can quickly remove all the adsorption rods 32 and scrape off the crystals adsorbed on them.

[0044] Example 2

[0045] Based on the above embodiment 1, this solution is similar to embodiment 1, except that in this embodiment, the medium channel 1 is provided with a heating structure 51, a cooling structure 52 and a temperature holding structure 53 along its length; the heating structure 51 and the cooling structure 52 can be provided along the inner surface of the medium channel 1, and the temperature holding structure 53 is provided on the outer side of the medium channel 1.

[0046] Based on the above structure, the medium in the medium channel 1 is heated or cooled by the heating structure 51 and the cooling structure 52 to adjust its temperature and keep the medium temperature within a suitable range. The temperature holding structure 53 can isolate the medium channel 1 from the ambient air temperature as much as possible to avoid the ambient temperature from affecting the fluid medium.

[0047] As an example, the heating structure 51 can be an electric heating mesh, which is disposed on the inner surface of the medium channel 1; the cooling structure 52 can be a water cooling pipe, which is wound around the outer wall of the medium channel 1; and the temperature holding structure 53 can be insulation cotton, which is disposed on the outer wall of the medium channel 1.

[0048] Based on the above structure, the fluid medium is heated by an electric heating grid, cooled by a water cooling pipeline, and the temperature of the medium channel 1 is maintained by insulation cotton.

[0049] As an example, a temperature detector 54 can be installed inside the medium channel 1. Multiple temperature detectors 54 are arranged in a ring around the circumference of the medium channel 1. The internal temperature can be known through the temperature detectors 54, which facilitates the detection of the temperature of the fluid medium.

[0050] As an example, the crystallization frame 2 can be glass, plastic, metal or other materials, but plastic is preferred.

[0051] The material of the medium channel 1 can be a plastic pipe or a metal pipe.

[0052] The material of the adsorption element 3 can be glass, fiber, metal or other materials, with the preferred material being a porous fiber material.

[0053] Ions in high-concentration liquids can be rapidly extracted using an adsorption method, and the extracted ionic crystals can be any type of ionic crystal.

[0054] The extraction device is not limited to the shape of a rectangular frame and channel; it can be any geometric property such as circular or oriented, but a preferred combination is square.

[0055] In this solution, the temperature of the fluid medium can be adjusted by an electric heating grid or a water-cooled pipeline. By adjusting the temperature and solution flow rate, the extraction efficiency of lithium ions can be enhanced. Increasing the number of stable crystal nuclei can also improve the extraction efficiency of lithium ions. Rotating the support component can also improve the extraction efficiency of lithium ions to some extent.

[0056] This solution is mainly for lithium extraction and impurity removal from salt lakes. It is low-cost, highly feasible, and has a fast crystallization rate. It does not require chemical reagents and is suitable for industrial applications. Compared with traditional methods, it extracts lithium ions faster, has a wider range of applications, and can guarantee a certain level of purity.

[0057] Example 3

[0058] This invention provides a technical solution:

[0059] An ion extraction and rapid crystallization method based on adsorption specifically includes the following steps:

[0060] Step 1: Select crystal rack 2 and adsorption element 3 of appropriate size according to the ions to be adsorbed;

[0061] The sizes of the first through hole 21, the second through hole 22, and the adsorbent 3 can be very large or very small, generally on the order of centimeters, but can also be micrometer or nanometer pores. Theoretically, the adsorbent 3 can also be micrometer or nanometer size. The number of the first through hole 21, the second through hole 22, and the adsorbent 3 can be very large or very small, depending on the ions being adsorbed. For different ionic solutions, the square area generally formed by the first through hole 21, the second through hole 22, and the adsorbent 3 is on the order of centimeters, but is not limited to the centimeter level. Theoretically, it can reach the micrometer or nanometer size. Different sizes of the first through hole 21, the second through hole 22, and different materials of the adsorbent 3 can be selected according to the different ionic solutions in the medium channel 1.

[0062] Step 2: The adsorbent 3 is charged with static electricity by an electrostatic generator and inserted into the crystallization frame 2 to form dense pores. The entire crystallization frame 2 is then placed in the medium channel 1, and a supersaturated solution of ions to be adsorbed is slowly introduced into the medium channel 1. The electrostatic generator can be an electrostatic generator gun. In this method, the spherical electrostatic adsorption effect is used to form a spherical electrostatic field around the pores formed by the interlaced adsorbents, thereby further accelerating the adsorption of ions.

[0063] Step 3: Based on the actual temperature on site, select to activate either the heating structure 51 or the cooling structure 52 to accelerate the adsorption and crystallization process;

[0064] Step 4: Remove crystallization rack 2 and scrape off the crystals on the settling rack.

[0065] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An ion extraction and rapid crystallization apparatus based on adsorption, characterized in that, The device includes at least a medium channel, a crystallization frame, and an adsorbent. The medium channel has an opening for the crystallization frame to enter. The crystallization frame has through holes for the adsorbent to pass through, forming staggered through holes when the adsorbent is inserted into the crystallization frame. The crystallization frame is a hollow frame structure. Multiple first through holes are evenly distributed along the length of the crystallization frame at both ends, and these first through holes correspond one-to-one. The line connecting the centers of the first through holes on their respective end plates is offset from the center line of the end plate. Multiple second through holes are evenly distributed along the length of the crystallization frame at both ends. The second through holes correspond one-to-one, and the line connecting the centers of the second through holes to the center of the end plate is offset from the center line of the end plate. When the adsorbent is inserted into the first through holes at the top and bottom ends, it can be staggered with the adsorbent inserted into the second through holes at the left and right ends, so that the adsorbents inserted in different directions can form staggered holes. The adsorbent has a broom-shaped structure and includes a support rod and an adsorbent rod. Multiple adsorbent rods are set along the length of the support rod, and adjacent adsorbent rod supports are arranged in parallel. The density of the adsorbent rods is the same as the density of the first or second through holes. The adsorbent is charged with static electricity by an electrostatic generator, and the adsorbent is inserted into the crystallization frame to form dense holes. A spherical electrostatic field is formed around the holes formed by the staggered adsorbents.

2. The ion extraction and rapid crystallization apparatus based on adsorption method as described in claim 1, characterized in that: The crystallization frame is also provided with gripping parts on both sides, and the bottom of the gripping parts is provided with flexible pads; the gripping parts are symmetrically arranged on both sides of the crystallization frame.

3. The ion extraction and rapid crystallization apparatus based on adsorption method as described in claim 1, characterized in that: The medium channel is provided with a heating structure, a cooling structure and a temperature holding structure along its length; the heating structure and the cooling structure are arranged along the inner surface of the medium channel, and the temperature holding structure is located on the outer side of the medium channel.

4. The ion extraction and rapid crystallization apparatus based on adsorption method as described in claim 3, characterized in that: The heating structure is an electric heating mesh, which is disposed on the inner surface of the medium channel; the cooling structure is a water-cooled pipeline, which is wound around the outer wall of the medium channel; and the temperature-holding structure is insulation cotton, which is disposed on the outer wall of the medium channel.

5. The ion extraction and rapid crystallization apparatus based on adsorption method as described in claim 4, characterized in that: A temperature detector is installed inside the medium channel, and multiple temperature detectors are arranged in a ring around the circumference of the medium channel.

6. A method for use in the ion extraction and rapid crystallization apparatus based on adsorption as described in any one of claims 1-5, characterized in that: Specifically, the following steps are included: Step 1: Select a crystallizer and adsorption element of appropriate size according to the ions to be adsorbed; Step 2: Use an electrostatic generator to make the adsorbents self-electrified, then insert the adsorbents into the crystallization rack to form dense holes; this creates a spherical electrostatic field around the holes formed by the staggered adsorbents. The entire crystallization frame was then placed into the medium channel, and a supersaturated solution of ions to be adsorbed was slowly passed through the medium channel. Step 3: Based on the actual temperature on site, select to activate the heating or cooling structure to accelerate the adsorption and crystallization process; Step 4: Remove the crystallization rack and scrape off the crystals on the settling rack.

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