Bionic filler structure and supergravity rotating filler bed

Abstract

The invention provides a bionic filler structure and a supergravity rotating packed bed. The bionic filler structure comprises a plurality of filler silk screens, each filler silk screen is in a round shape with a center hole, each filler silk screen is composed of a plurality of bionic tree units which are arranged in a radial shape outwards from the center hole of the filler silk screen, and trunks of the bionic tree units all point to the center hole of the round. Branches of the plurality of bionic tree units all point to the periphery of a circle; the multiple filler silk screens are sequentially stacked in the mode that center holes are opposite to each other to form the cylindrical bionic filler structure, and the center holes of the multiple filler silk screens jointly form a center shaft hole of the bionic filler structure. The bionic filler structure simulates growth and formation of trunks and branches, so that the number of tail end branches close to the outer side is large, a large amount of liquid can be sheared, the phenomenon that liquid in filler of a rotating filler bed is not evenly distributed is well adapted, the gas-liquid contact area is increased, and then the mass transfer efficiency is enhanced.

Description

Technical Field

[0001] The present application belongs to the field of gas-liquid mass transfer, and specifically relates to a bionic packing structure and a high-gravity rotating packing bed. Background Art

[0002] Rotary packed beds (RPBs) are widely used to enhance various reactions due to their high mass transfer efficiency. This process utilizes centrifugal force to cause the packing to rotate at high speed, creating a high-gravity environment within the bed. This shears the liquid upon contact with the packing, dispersing it into a liquid film and droplets. This also creates countercurrent contact between the gas and liquid, increasing the contact area and significantly boosting the mass transfer rate. Compared to traditional packed towers, RPBs can achieve a mass transfer coefficient that can be increased by several orders of magnitude. Furthermore, RPBs offer numerous advantages, such as a small footprint and a simple process.

[0003] However, existing research indicates that rotating packed beds exhibit uneven liquid distribution within the packing. Due to centrifugal force, liquid accumulates on the outside of the packing and within the bed cavity. Existing structured packing structures are unable to adapt to this phenomenon, failing to shear and stretch the excess liquid to increase the contact area between the phases, thereby impacting the overall mass transfer process. Furthermore, in environments such as offshore platforms, rotating packed beds can experience wobbling, resulting in uneven stress distribution within the packing structure, impacting operational stability.

[0004] Bionics has been gaining popularity in recent years. The habits and physiological structures of organisms are the result of long-term natural selection during the long process of evolution, which helps them better adapt to their environments. By imitating the structure of organisms and combining it with knowledge of topology, a biomimetic structural model has been abstracted and refined, and applied to rotating packed beds, which will help solve the above-mentioned technical problems. Summary of the Invention

[0005] In response to the above-mentioned technical problems existing in the prior art, the embodiments of the present application provide a bionic packing structure and a high-gravity rotating packing bed.

[0006] The technical solution adopted in the embodiment of the present application is: a bionic filler structure, including multiple pieces of filler mesh, the filler mesh is circular with a center hole, and the filler mesh is composed of multiple bionic tree units arranged radially outward from the center hole, the trunks of the multiple bionic tree units all point to the center hole of the circle, and the branches of the multiple bionic tree units all point to the outer periphery of the circle; multiple pieces of the filler mesh are stacked in sequence with the center holes relative to each other to form a cylindrical bionic filler structure, and the center holes of the multiple pieces of the filler mesh together form the central axis hole of the bionic filler structure.

[0007] In an optional embodiment, the filler wire mesh includes eight to fifteen bionic tree units, each of the bionic tree units has the same structure and is fan-shaped, and the central angles of the bionic tree units are the same.

[0008] In an optional embodiment, two adjacent pieces of filler wire mesh are spaced apart, and a first vertical metal wire is provided at the spaced apart position to connect the corresponding growth nodes and / or

[0009] The outer periphery of each piece of the filler wire mesh is respectively provided with a circular metal wire for connecting the ends of the plurality of bionic tree units; and / or

[0010] The plurality of looped metal wires are connected by a plurality of second vertical metal wires.

[0011] In an optional embodiment, the bionic tree unit is made of a metal wire with a cylindrical cross-section. Based on the biomimetic tree structure, a 3D model is obtained through topological mathematical optimization and then obtained through 3D printing technology.

[0012] In an optional embodiment, the diameter of the cross section of the metal wire is 1 mm to 3 mm; and / or

[0013] The interval between two adjacent layers of the filler wire mesh is 7 mm.

[0014] In an optional embodiment, the diameter of the central hole of the filler mesh is 15 mm to 30 mm, and the outer diameter of the filler mesh is 140 mm to 190 mm; and / or

[0015] The length of each growth of the bionic tree unit is 9 mm to 12 mm; and / or

[0016] The angle between two branches growing from the same growth node is 60° to 120°; and / or

[0017] The bionic tree unit grows 6-7 times.

[0018] In an optional embodiment, the porosity α of the biomimetic filler structure is 0.9, wherein V s is the volume of the metal wire, and V is the total volume of the bionic filler structure.

[0019] A high-gravity rotating packed bed comprises a shell and a bionic packing structure according to any one of the above embodiments arranged in the shell.

[0020] In an optional embodiment, the shell is a hollow cylinder, the top of the shell is provided with a liquid inlet and a gas outlet, the side of the shell is provided with a gas inlet, and the bottom of the shell is provided with a liquid outlet;

[0021] The axis of the bionic packing structure is collinear with the axis of the shell; the liquid inlet is located above the bionic packing structure and facing the central axis hole of the bionic packing structure, so that the liquid enters from the center of the bionic packing structure; the gas inlet corresponds to the peripheral side of the bionic packing structure, so that the gas enters from the peripheral side of the bionic packing structure.

[0022] In an optional embodiment, an extension tube is provided in the housing and docked with the liquid inlet;

[0023] The high gravity rotating packed bed also includes:

[0024] a liquid distributor extending into the axis of the bionic filler structure through the liquid inlet and the extension tube;

[0025] an upper cover plate, which is provided above the bionic filler structure and is used to cover the bionic filler structure, wherein the lower end of the extension tube passes through the upper cover plate and extends into the axis of the bionic filler structure, and the upper cover plate is connected to the extension tube;

[0026] a lower cover plate, which is provided below the bionic filler structure and is used to support the bionic filler structure;

[0027] A driving mechanism is provided outside the shell and passes through the shell to be connected with the lower cover plate, and is used for driving the lower cover plate and the bionic filler structure to rotate with the axis of the bionic filler structure as the rotation center.

[0028] Compared with the prior art, the embodiments of the present application have the following advantages:

[0029] 1. The bionic packing structure of the present application can well adapt to the phenomenon of uneven liquid distribution, so that the packing mesh can shear the liquid at different radial positions to increase the gas-liquid contact area and thus enhance the mass transfer efficiency.

[0030] 2. Based on the characteristics of gas-liquid countercurrent flow in the high-gravity rotating packed bed, the gas first contacts the liquid phase in the outer packing to cause mass transfer. Since more branches are generated on the outside, more liquid is sheared, and the diameter of the outside is larger than that of the inside, so the surface area of ​​the liquid film generated by shearing is larger, thereby increasing the contact area between the gas and liquid phases and strengthening the mass transfer reaction process.

[0031] Third, the bionic tree-like structure has been topologically refined to achieve a rational and efficient structural form. Its force transmission paths are short and clear, and stress distribution at growth nodes is uniform, allowing fewer components to support a larger space. Therefore, the bionic packing structure based on this structure is less susceptible to deformation caused by external forces during use, enabling efficient and stable operation and adaptability to working conditions with higher centrifugal forces, demonstrating superior adaptability.

[0032] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention.

[0033] This application describes an overview of various implementations or examples of the technology, and is not a comprehensive disclosure of the full scope or all of the features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In the drawings, which are not necessarily drawn to scale, like reference numerals may describe similar components in different views. The drawings illustrate various embodiments generally by way of example and not limitation, and together with the description and claims, serve to illustrate the disclosed embodiments. Where appropriate, like reference numerals are used throughout the drawings to refer to like or similar parts. Such embodiments are illustrative and are not intended to be exhaustive or exclusive of the embodiments of the present apparatus or method.

[0035] Figure 1 This is a schematic structural diagram of the filler wire mesh according to an embodiment of the present application.

[0036] Figure 2 This is a schematic structural diagram of the bionic filler structure of an embodiment of the present application.

[0037] Figure 3 Schematic diagram of the formation process of the bionic tree unit according to an embodiment of the present application.

[0038] Figure 4 This is a longitudinal cross-sectional view of the high-gravity rotating packed bed according to an embodiment of the present application.

[0039] Figure 5 This is a cross-sectional view of the high-gravity rotating packed bed according to an embodiment of the present application.

[0040] Reference numerals:

[0041] 1-bionic filler structure; 11-filler wire mesh; 111-center hole; 112-second vertical metal wire; 113-annular metal wire; 12-center axis hole;

[0042] 2-shell; 21-liquid inlet; 22-liquid outlet; 23-gas inlet; 24-gas outlet; 25-extension tube;

[0043] 3-liquid distributor; 31-jet hole;

[0044] 4-upper cover; 5-lower cover; 6-motor; 7-rotating shaft; 8-fixed shaft. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below in conjunction with the drawings of the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the described embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0046] Unless otherwise defined, the technical or scientific terms used in this application should have the usual meanings understood by people with ordinary skills in the field to which this application belongs. The "first", "second" and similar words used in this application do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative position relationships. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0047] In order to keep the following description of the embodiments of the present application clear and concise, detailed descriptions of known functions and known components are omitted in this application.

[0048] An embodiment of the present application provides a bionic packing structure 1, which can be used on a high-gravity rotating packing bed.

[0049] like Figure 1 and Figure 2 As shown, the biomimetic filler structure 1 of the embodiment of the present application includes multiple pieces of filler mesh 11. The multiple pieces of filler mesh 11 have the same shape, structure, and size, and are all circular with a center hole 111. The filler mesh 11 is composed of multiple biomimetic tree units arranged radially outward from its center hole 111, that is, the multiple biomimetic tree units are arranged in sequence to form a circle, and the trunks of the multiple biomimetic tree units all point to the center hole 111 of the circle, and the branches of the multiple biomimetic tree units all point to the periphery of the circle. The multiple pieces of filler mesh 11 are stacked in sequence with the center holes 111 facing each other to form a roughly cylindrical biomimetic filler structure 1. The center holes 111 of the multiple pieces of filler mesh 11 together form the central axis hole 12 of the cylindrical biomimetic filler structure 1.

[0050] The bionic packing structure 1 of the embodiment of the present application imitates the growth of tree trunks and branches. The trunk near the center has fewer initial branches and fewer pores, while the terminal branches near the outside have more branches and more pores. The more branches on the outside can shear more liquid, which is very suitable for the uneven distribution of liquid in the packing of the rotating packing bed, so that the packing mesh 11 can shear the liquid at different radial positions, increase the gas-liquid contact area and thus enhance the mass transfer efficiency.

[0051] The number of bionic tree units comprising each filler mesh 11 is not limited. To ensure uniformity and symmetry of the filler mesh 11, the multiple bionic tree units comprising the filler mesh 11 are structurally identical and evenly spaced. In some embodiments, the filler mesh 11 includes eight to fifteen bionic tree units, each structurally identical and fan-shaped, with the central angle of the fan-shaped fan occupied by each bionic tree unit being the same. For example, when the filler mesh 11 includes twelve bionic tree units, the central angle of the fan-shaped fan occupied by each bionic tree unit is 30°.

[0052] For each bionic tree unit, it imitates the recursive branching pattern of trees to ensure mechanical stability and space filling efficiency. Exemplarily, the bionic tree unit starts from a branch (or trunk) closest to the center hole 111 and grows radially toward the circumferential direction to generate fractal branches. For the convenience of description below, this branch can be defined as the first branch. The end of the first branch away from the center hole 111 serves as a growth node to grow outward two sections of second branches (subsequent growth can be called tree branches). The ends of the two second branches away from the trunk serve as growth nodes and continue to grow outward two sections of third branches respectively. In this way, it grows in an exponential growth manner of 1 to 2, 2 to 4, and 4 to 8. That is, the structure (number of branches) generated each time can be regarded as exponentially increasing. Therefore, the number of branches generated each time can be obtained according to the summation formula of the geometric series.

[0053] The bionic tree units gradually increase in number of branches in the radial direction, the pore size becomes smaller and smaller, but the number of pores increases. The porosity of the filler of the bionic packing structure 1 formed by stacking multiple bionic tree units of such a structure gradually increases from the central hole 111 to the radial direction of the outer circumference, and the number of pores gradually increases, so that it is suitable for use as a filler for a rotating packed bed. The liquid is unevenly distributed inside the filler due to the action of centrifugal force, and the liquid accumulated on the outside of the filler and in the cavity of the rotating packed bed is sheared and stretched to better increase the phase contact area and improve the mass transfer efficiency.

[0054] Optionally, the angle between two branches grown from the same growth node can be 60° to 120°. In addition, it is necessary to consider the number of times the bionic tree unit grows and the length of each growth. The specific number of growths and the length of each growth of each bionic tree unit can be set according to actual needs (specific working conditions). The length of each growth of the bionic tree unit can be 9mm to 12mm. For example, the length of each growth of the bionic tree unit is 9mm, 10mm, 10.5mm, 12mm, etc. The number of growth times of the bionic tree unit can be 6-7 times. In this way, it can avoid the porosity of the outside being reduced due to too many growth times, which affects the outflow of liquid.

[0055] The bionic tree units of the multiple pieces of filler mesh 11 constituting the bionic filler structure 1 have the same growth times to ensure the uniformity and symmetry of the structure. Two adjacent bionic tree units of the same piece of filler mesh 11 have a connection relationship so that the filler mesh 11 composed of multiple bionic tree units forms a whole. Exemplarily, the growth nodes of two bionic tree units at the corresponding growth times can be connected together. Specifically, the second growth nodes (the end of the second branch away from the center hole 111) of two adjacent bionic tree units are connected together, and the subsequent growth nodes of the two adjacent bionic tree units are selectively connected together according to the preset growth trajectory, thus forming a stable entire filler mesh 11.

[0056] Optionally, the bionic tree unit is made of a cylindrical metal wire, which can be a nickel-chromium alloy with three-dimensional interconnected pores. Using this metal wire, a 3D model is created through topological mathematical optimization based on the biomimetic tree structure, which is then produced using 3D printing technology. This allows for better generation of the biomimetic filler structure 1, making it more suitable for engineering applications under hypergravity rotation conditions.

[0057] The geometric model structure of the filler wire mesh 11 of the embodiment of the present application is as follows: Figure 3 -a is abstracted from the plant branches shown in the figure, and the obtained bionic topological structure is as follows Figure 3 -b, in order to adapt to the physical structure of the high porosity of the rotating packing bed, the topological structure is regrown and overlapped to make the partial schematic diagram of the bionic packing structure 1 of the present application as shown in Figure 3 -c as shown.

[0058] The diameter of the metal wire, that is, the diameter of the metal wire cross section, can be selected according to actual needs, and the diameter of the metal wire cross section can be 1 mm to 3 mm. For example, the diameter of the metal wire cross section is 1 mm, 2 mm, 3 mm, etc.

[0059] Optionally, the diameter of the central hole 111 of the packing mesh 11 may be 15 mm to 30 mm, such as 15 mm, 16 mm, 18 mm, 20 mm, 25 mm, 30 mm, etc. The outer diameter of the packing mesh 11 may be 140 mm to 190 mm, such as 140 mm, 160 mm, 170 mm, 190 mm, etc.

[0060] In some embodiments, two adjacent filler meshes 11 can be spaced apart, with a first vertical metal wire disposed at the gap, connecting the corresponding growth nodes of the two adjacent filler meshes 11. This not only increases structural stability but also shears and stretches the liquid perpendicular to the growth direction of the bionic tree units, further increasing the gas-liquid contact area and enhancing the gas-liquid mass transfer efficiency of the filler.

[0061] In some embodiments, as Figure 2 As shown, the ends of the corresponding bionic tree units of multiple filler meshes 11 can be connected by second vertical wires 112, further securing the filler meshes 11 and increasing the shear and stretching properties of the liquid. Furthermore, the outer periphery of each filler mesh 11 is provided with a ring-shaped wire 113 for connecting the ends of the multiple bionic tree units. This allows the stacked filler meshes 11 to form a unified, more stable structure.

[0062] The intervals between any two adjacent filler meshes 11 are the same, so that the filler meshes 11 are evenly distributed in the axial direction of the bionic filler structure 1. Figure 2 Therefore, the bionic filler structure 1 can adapt well to the high-gravity rotating domain environment in the circumferential direction, shear the fluid more evenly in the circumferential direction, and facilitate the processing and manufacturing of the filler.

[0063] The spacing between two adjacent layers of filler mesh 11 can be set based on actual needs and operating conditions. For example, the spacing can be 6 mm to 8 mm. The number of filler meshes 11 can be six to ten, meaning that the bionic filler structure 1 includes six to ten stacked layers of filler mesh 11, each layer 7 mm to 11 mm high.

[0064] The bionic filler structure 1 composed of multiple filler meshes 11 stacked in sequence is a high-porosity filler, and its porosity α can reach 0.9, wherein, V s is the volume of the metal wire, and V is the total volume of the bionic filler structure 1.

[0065] like Figure 4 and Figure 5As shown, the embodiment of the present application also provides a high-gravity rotating packed bed, which includes a shell 2 and a bionic packing structure 1 according to any of the above embodiments, which is arranged within the shell 2. The high-gravity rotating packed bed of the present application, by adopting an improved bionic packing structure 1, can well adapt to the situation of uneven liquid distribution inside the packing during use, increase the mass transfer area between the gas and liquid phases, and thus greatly increase the mass transfer coefficient between the gas and liquid phases. At the same time, the bionic topological structure of the bionic packing structure 1 itself has good mechanical properties, which can operate more stably during the production process.

[0066] In some embodiments, as Figure 4 As shown, the housing 2 is hollow cylindrical, with a liquid inlet 21 and a gas outlet 24 provided at the top, a gas inlet 23 provided on the side, and a liquid outlet 22 provided at the bottom. The liquid inlet 21 is located at the axis of the housing 2. The biomimetic packing structure 1 is located and centered within the housing 2, ensuring a certain gap between the biomimetic packing structure 1 and the inner walls of the housing 2. The axis of the biomimetic packing structure 1 is collinear with the axis of the housing 2, so that the liquid inlet 21 is located above the biomimetic packing structure 1 and directly faces the central axial hole 12 of the biomimetic packing structure 1, thereby delivering liquid into the center of the biomimetic packing structure 1. The gas inlet 23 corresponds to the circumference of the biomimetic packing structure 1, allowing gas to enter from the circumference of the biomimetic packing structure 1 and countercurrently contact with the liquid within the biomimetic packing structure 1 to produce mass transfer reactions and other processes, and then flow out through the gas outlet 24, which is offset from the axis of the biomimetic packing structure 1.

[0067] Further, such as Figure 4 As shown, an extension tube 25 docking with the liquid inlet 21 is provided in the shell 2, and the extension tube 25 is fixedly connected to the shell 2, or is an integrated structure. The supergravity rotating packing bed also includes a liquid distributor 3, an upper cover plate 4, a lower cover plate 5 and a driving mechanism. The liquid distributor 3 extends into the axis of the bionic packing structure 1 (inside the central axis hole 12 of the bionic packing structure 1) via the liquid inlet 21 and the extension tube 25. The upper cover plate 4 is arranged above the bionic packing structure 1 to cover the bionic packing structure 1, and the lower end of the extension tube 25 passes through the upper cover plate 4 and extends into the axis of the bionic packing structure 1, and the upper cover plate 4 is connected to the extension tube 25. That is, the upper cover plate 4 is connected to the shell 2 through the extension tube 25 and maintains a certain distance from the shell 2. The lower cover plate 5 is arranged below the bionic packing structure 1 to support the bionic packing structure 1. That is, the bionic packing structure 1 is fixed on the lower cover plate 5, and the lower cover plate 5 forms a support for the bionic packing structure 1. The driving mechanism is arranged outside the shell 2 and passes through the shell 2 to be connected with the lower cover plate 5 , and is used to drive the lower cover plate 5 and the bionic filler structure 1 to rotate with the axis of the bionic filler structure 1 as the rotation center.

[0068] The drive mechanism may include a motor 6. The output shaft of the motor 6 extends through the bottom of the housing 2 into the housing 2 and is connected to a fixed shaft 8 fixed below the lower cover plate 5. The fixed shaft 8 may be coaxially arranged with the central axis hole 12 of the biomimetic packing structure 1. When the motor 6 is started, the output shaft drives the fixed shaft 8, the lower cover plate 5, and the biomimetic packing structure 1 to rotate synchronously. The upper cover plate 4 does not rotate with the biomimetic packing structure 1 and remains stationary.

[0069] It is understood that the liquid distributor 3 forms a seal with the liquid inlet 21 at the point where it enters the liquid inlet 21, and the connection between the extension tube 25 and the upper cover plate 4 also needs to be sealed. This ensures that the liquid enters the biomimetic packing structure 1 through the liquid distributor 3 without unnecessary leakage.

[0070] The specific working principle of the ultra-gravity rotating packed bed: During operation, the motor 6 drives the rotating shaft 7 to rotate, and the rotating shaft 7 then drives the fixed shaft 8 to rotate the lower cover plate 5 and the bionic packing structure 1 connected to the fixed shaft 8. The liquid enters the bionic packing structure 1 from the jet hole 31 in the liquid distributor 3 in the liquid inlet 21, is sheared and dispersed by the packing mesh 11, and is thrown out from the outer peripheral side of the bionic packing structure 1, and then flows out from the liquid outlet 22 due to the action of gravity. The gas enters from the peripheral side of the bionic packing structure 1 from the gas inlet 23, and contacts with the liquid in the bionic packing structure 1 in countercurrent flow to produce mass transfer reaction and other processes. After the mass transfer, the gas overflows from the peripheral side of the bionic packing structure 1, and due to the relatively low density of the gas itself, flows out from the gas outlet 24 at the top of the shell 2.

[0071] The high-gravity rotating packed bed of this application utilizes a novel biomimetic packing structure 1, which can adapt to uneven liquid distribution within the packing during operation, effectively shearing the fluid near the outside of the packing, thereby increasing the contact area between the gas and liquid phases and significantly improving the mass transfer rate. Furthermore, the biomimetic packing structure 1 of this application has been topologically optimized, resulting in excellent mechanical properties and the ability to adapt well to high-gravity environments during operation.

[0072] The above description is intended to be illustrative rather than restrictive, and those skilled in the art may make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present disclosure. Furthermore, the above examples (or one or more of them) may be used in combination with each other, and it is contemplated that these embodiments may be combined with each other in various combinations or permutations.

Claims

1. A bionic filler structure, characterized in that: The invention comprises a plurality of filler meshes, each of which is circular with a central hole. The filler meshes are composed of a plurality of bionic tree units arranged radially outward from the central hole. The trunks of the plurality of bionic tree units all point to the central hole of the circle, and the branches of the plurality of bionic tree units all point to the outer periphery of the circle. The plurality of filler meshes are stacked in sequence with the central holes facing each other to form a cylindrical bionic filler structure. The central holes of the plurality of filler meshes together form the central axis hole of the bionic filler structure.

2. The bionic filler structure according to claim 1, characterized in that: The filler wire mesh includes eight to fifteen bionic tree units, each of which has the same structure and is fan-shaped, and the central angles of the bionic tree units are the same.

3. The bionic filler structure according to claim 1, characterized in that Two adjacent filler wire meshes are spaced apart, and a first vertical metal wire is provided at the spaced apart position to connect corresponding growth nodes of the two adjacent filler wire meshes; and / or The outer periphery of each piece of the filler wire mesh is respectively provided with a circular metal wire for connecting the ends of the plurality of bionic tree units; and / or The plurality of looped metal wires are connected by a plurality of second vertical metal wires.

4. The bionic filler structure according to claim 3, characterized in that: The bionic tree unit is made of a metal wire with a cylindrical cross section. Based on the biomimetic tree structure, a 3D model is obtained through topological mathematical optimization and then through 3D printing technology.

5. The bionic filler structure according to claim 4, characterized in that: The diameter of the cross section of the metal wire is 1 mm to 3 mm; and / or The interval between two adjacent layers of the filler wire mesh is 7 mm.

6. The bionic filler structure according to claim 1, characterized in that: The diameter of the central hole of the filler mesh is 15 mm to 30 mm, and the outer diameter of the filler mesh is 140 mm to 190 mm; and / or The length of each growth of the bionic tree unit is 9 mm to 12 mm; and / or The angle between two branches growing from the same growth node is 60° to 120°; and / or The bionic tree unit grows 6-7 times.

7. The bionic filler structure according to claim 4, characterized in that: The porosity α of the biomimetic filler structure is 0.9, wherein, V s is the volume of the metal wire, and V is the total volume of the bionic filler structure.

8. A high gravity rotating packed bed, comprising a shell, characterized in that: The invention further comprises a bionic filler structure according to any one of claims 1 to 7 disposed in the housing.

9. The high gravity rotating packed bed according to claim 8, characterized in that: The shell is a hollow cylindrical shape, with a liquid inlet and a gas outlet provided on the top of the shell, a gas inlet provided on the side of the shell, and a liquid outlet provided on the bottom of the shell; The axis of the bionic packing structure is collinear with the axis of the shell; the liquid inlet is located above the bionic packing structure and facing the central axis hole of the bionic packing structure, so that the liquid enters from the center of the bionic packing structure; the gas inlet corresponds to the peripheral side of the bionic packing structure, so that the gas enters from the peripheral side of the bionic packing structure.

10. The high gravity rotating packed bed according to claim 9, characterized in that: An extension pipe connected to the liquid inlet is provided in the housing; The high gravity rotating packed bed also includes: a liquid distributor extending into the axis of the bionic filler structure through the liquid inlet and the extension tube; an upper cover plate, which is provided above the bionic filler structure and is used to cover the bionic filler structure, wherein the lower end of the extension tube passes through the upper cover plate and extends into the axis of the bionic filler structure, and the upper cover plate is connected to the extension tube; a lower cover plate, which is provided below the bionic filler structure and is used to support the bionic filler structure; A driving mechanism is provided outside the shell and passes through the shell to be connected with the lower cover plate, and is used for driving the lower cover plate and the bionic filler structure to rotate with the axis of the bionic filler structure as the rotation center.

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