Defoaming structure, regeneration tower and carbon dioxide capture system

Abstract

The invention provides a defoaming structure, a regeneration tower and a carbon dioxide capture system, and the defoaming structure comprises a substrate; the first bubble breaking structure is arranged on the substrate; the arc-shaped cover is arranged on the substrate in a covering manner; the second bubble breaking structure is arranged on the arc-shaped cover; wherein the first foam breaking structure comprises a plurality of first foam breaking holes, and each first foam breaking hole is provided with a plurality of corners. According to the technical scheme, the problem that in the related technology, a defoaming agent is used for defoaming, and consequently the cost is high is effectively solved.

Description

Technical Field

[0001] The present invention relates to the technical field of carbon dioxide capture, and in particular to a defoaming structure, a regeneration tower and a carbon dioxide capture system. Background Art

[0002] With the development of industrialization, the emission of carbon dioxide is increasing day by day, which has caused serious pollution to the environment and caused global warming, greenhouse effect and other problems. In order to reduce the emission of carbon dioxide, carbon dioxide capture technology has been widely used. The industrial tail gas rich in carbon dioxide is passed into the absorption tower, and the carbon dioxide absorbent in the absorption tower absorbs the carbon dioxide in the industrial tail gas. The carbon dioxide absorbent after the reaction will sink to the bottom of the absorption tower. The carbon dioxide absorbent after the reaction is passed into the regeneration tower. After the cycle spray heating regeneration, the carbon dioxide in the carbon dioxide absorbent is precipitated, and the carbon dioxide absorbent continues to be passed into the absorption tower for recycling.

[0003] In the regeneration tower, gas will precipitate from the liquid, which will produce more bubbles. A large number of bubbles will cause false liquid levels. In order to reduce the generation of bubbles, defoaming agents are generally used for defoaming. However, this requires constant observation and selection of whether to add defoaming agents, which will increase production costs. Summary of the invention

[0004] The main purpose of the present invention is to provide a defoaming structure, a regeneration tower and a carbon dioxide capture system to solve the problem of using a defoaming agent for defoaming in the related art, which leads to high costs.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, a defoaming structure is provided, including: a substrate; a first bubble breaking structure, which is arranged on the substrate; an arc-shaped cover, which is arranged on the substrate; and a second bubble breaking structure, which is arranged on the arc-shaped cover; wherein the first bubble breaking structure includes a plurality of first bubble breaking holes, and each first bubble breaking hole has a plurality of corners.

[0006] Furthermore, the substrate includes a plurality of first plates, a plurality of second plates and a plurality of connecting plates, the first plates and the second plates are arranged at intervals, the first plate is located between two adjacent second plates, and the connecting plates are connected between the first plates and the second plates.

[0007] Furthermore, the plurality of first bubble-breaking holes form a plurality of first bubble-breaking parts, and each first plate body, each second plate body and each connecting plate is provided with a first bubble-breaking part.

[0008] Furthermore, the shapes of the first cell breaking holes in each first cell breaking part are different.

[0009] Further, the number of corners of each first bubble breaking cell is greater than 8.

[0010] Further, the second cell breaking structure includes a plurality of second cell breaking holes, and each of the second cell breaking holes has the same number of corners.

[0011] Further, the plurality of second bubble breaking holes form a plurality of second bubble breaking parts, each second bubble breaking part includes a plurality of second bubble breaking holes, and the number of the second bubble breaking holes in each second bubble breaking part gradually increases from the top of the arc cover to the bottom of the arc cover.

[0012] Furthermore, in a direction from the top of the arc-shaped cover to the bottom of the arc-shaped cover, the size of the second bubble breaking holes in the second bubble breaking portion gradually increases.

[0013] According to a second aspect of the present invention, a regeneration tower is provided, comprising a defoaming structure, wherein the defoaming structure is the defoaming structure described above.

[0014] According to a third aspect of the present invention, there is provided a carbon dioxide capture system, comprising a regeneration tower, wherein the regeneration tower is the above-mentioned regeneration tower.

[0015] By applying the technical solution of the present invention, the first bubble breaking structure is arranged on the substrate, the arc cover is arranged on the substrate, and the second bubble breaking structure is arranged on the arc cover. Specifically, the first bubble breaking structure includes a plurality of first bubble breaking holes, and each first bubble breaking hole has a plurality of corners. Through the above arrangement, the bubbles can achieve the first bubble breaking when passing through the first bubble breaking structure, and pass through the substrate to enter between the substrate and the arc cover, and can achieve the second bubble breaking after being squeezed between the substrate and the arc cover, and finally flow out through the second bubble breaking structure on the arc cover, and the second bubble breaking structure can achieve the third bubble breaking, thereby ensuring the bubble breaking effect. Therefore, the technical solution of the present application effectively solves the problem of using a defoaming agent for defoaming in the related art, which leads to high costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0017] Figure 1 A schematic diagram of the three-dimensional structure of an embodiment of a cannon-extinguishing structure according to the present invention is shown;

[0018] Figure 2 Shows Figure 1 Schematic diagram of the exploded structure of the fire extinguisher structure;

[0019] Figure 3 Shows Figure 1 A cross-sectional schematic diagram of a cannon fire suppression structure;

[0020] Figure 4 Shows Figure 1Schematic diagram of the three-dimensional structure of the substrate of the fire cannon structure.

[0021] The above drawings include the following reference numerals:

[0022] 10. Base plate; 11. First plate body; 12. Second plate body; 13. Connecting plate; 20. First bubble breaking structure; 21. First bubble breaking hole; 30. Arc cover; 40. Second bubble breaking structure; 41. Second bubble breaking hole. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0025] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0026] like Figures 1 to 3As shown, in this embodiment, the defoaming structure includes: a substrate 10, a first bubble breaking structure 20, an arc cover 30 and a second bubble breaking structure 40. The first bubble breaking structure 20 is arranged on the substrate 10. The arc cover 30 is arranged on the substrate 10. The second bubble breaking structure 40 is arranged on the arc cover 30. The first bubble breaking structure 20 includes a plurality of first bubble breaking holes 21, and each first bubble breaking hole 21 has a plurality of corners.

[0027] The technical solution of this embodiment is applied, the first bubble breaking structure 20 is arranged on the substrate 10, the arc cover 30 is arranged on the substrate 10, and the second bubble breaking structure 40 is arranged on the arc cover 30. Specifically, the first bubble breaking structure 20 includes a plurality of first bubble breaking holes 21, and each first bubble breaking hole 21 has a plurality of corners. Through the above-mentioned arrangement, the bubble can achieve the first bubble breaking when passing through the first bubble breaking structure 20, and pass through the substrate 10 to enter between the substrate 10 and the arc cover 30, and can achieve the second bubble breaking after being squeezed between the substrate 10 and the arc cover 30, and finally flow out through the second bubble breaking structure 40 on the arc cover 30, and the second bubble breaking structure 40 can achieve the third bubble breaking, thereby ensuring the bubble breaking effect. Therefore, the technical solution of this embodiment effectively solves the problem of using a defoaming agent for defoaming in the related art, which leads to high costs.

[0028] Through this design, the defoaming structure can effectively reduce the formation of foam and improve the separation efficiency of liquids in industrial production processes, especially in tower equipment in the chemical, petroleum, pharmaceutical and other industries, thereby reducing energy consumption and improving production efficiency.

[0029] The implementation effect of this design is that the foam is cut and destroyed by the corner of the first bubble breaking hole 21, which significantly reduces the residence time of the foam in the liquid and accelerates the foam breaking speed, especially in the liquid containing surfactant. The specific application scenarios can be extended to the food industry, water treatment field, and any production process that needs to control the foam. For example, when producing yogurt and beer, the defoaming structure can effectively control the foam and ensure product quality.

[0030] like Figures 2 to 4 As shown, in this embodiment, the substrate 10 includes a plurality of first plates 11, a plurality of second plates 12, and a plurality of connecting plates 13. The first plates 11 and the second plates 12 are arranged at intervals, the first plate 11 is located between two adjacent second plates 12, and the connecting plates 13 are connected between the first plate 11 and the second plate 12. The above arrangement enables the substrate 10 to contact with the bubbles in a stepped manner, thereby improving the bubble breaking effect.

[0031] It should be noted that this structure not only enhances the mechanical strength of the defoaming structure, but also further improves the defoaming effect by increasing the contact area, and is suitable for treating liquids with high viscosity or containing a large amount of foam, such as in wastewater treatment and fermentation industry. In practical applications, this layered substrate 10 can withstand more complex working conditions. For example, in a chemical reactor, a high-viscosity reaction liquid is prone to produce stable foam. The defoaming structure can effectively destroy these foams, accelerate the mixing and reaction of the reaction liquid, and improve production efficiency. In wastewater treatment, the defoaming structure can reduce the overflow problem caused by foam and ensure the continuity and efficiency of the treatment process.

[0032] like Figure 2 and Figure 4 As shown, in this embodiment, a plurality of first bubble-breaking holes 21 form a plurality of first bubble-breaking parts, and a first bubble-breaking part is provided on each first plate body 11, each second plate body 12 and each connecting plate 13. The above arrangement can ensure the bubble-breaking effect.

[0033] Specifically, this layout can ensure that the foam is subjected to uniform destructive force when passing through the defoaming structure, preventing incomplete local defoaming, and is suitable for occasions that require highly uniform defoaming effects, such as liquid treatment processes in fine chemicals and bioengineering. In the fields of fine chemicals and bioengineering, liquids often contain sensitive components, such as microorganisms, proteins, etc. The use of this uniform defoaming layout can avoid damage to these sensitive components caused by excessive local destructive forces, while ensuring the consistency of the defoaming effect, which is beneficial to improving the purity and yield of the product. For example, in the process of biological fermentation, excessive foam will interfere with the supply of oxygen and affect the growth of microorganisms, while the optimized defoaming structure can effectively control the foam and ensure the stability of the fermentation process.

[0034] like Figure 2 and Figure 4 As shown, in this embodiment, the shapes of the first bubble breaking holes 21 in each first bubble breaking part are different. The above arrangement can improve the bubble breaking effect and ensure the efficiency of bubble breaking.

[0035] like Figure 2 and Figure 4 As shown, in this embodiment, the number of corners of each first bubble breaking hole 21 is greater than 8. The arrangement of the corners can achieve bubble breaking, that is, when the bubble contacts the corners, the bubble can be broken.

[0036] Specifically, the increase in the number of corners means that the foam will be subjected to more shear force when passing through the bubble breaking holes, thereby more effectively destroying the foam and improving the defoaming efficiency, which is suitable for treating highly foaming liquids, such as in oil extraction and chemical reactions. In oil extraction and chemical reactions, liquids often have high foaming properties, which will cause foam accumulation in the tower equipment and affect the transmission and separation efficiency of the liquid.

[0037] By increasing the number of corners of the first bubble breaking holes 21, the shear force is increased, and the foam is destroyed more thoroughly, thereby avoiding flooding and improving the processing capacity and stability of the tower. For example, in the oil refining process, the defoaming structure can effectively reduce foam, avoid mixing of liquids at the top and bottom of the tower, and improve the separation effect.

[0038] like Figures 1 to 3 As shown, in this embodiment, the second bubble breaking structure 40 includes a plurality of second bubble breaking holes 41, and each second bubble breaking hole 41 has the same number of corners. The above arrangement can effectively achieve bubble breaking.

[0039] It should be noted that this design ensures the consistency of the defoaming effect of the second bubble breaking structure 40, and is suitable for occasions that require a stable defoaming effect, such as applications in continuous chemical production and gas purification processes. In continuous chemical production, maintaining the consistency of the defoaming effect is crucial to maintaining the stable operation of the production line. The uniform design of the number of corners of the second bubble breaking hole 41 ensures the uniformity of the destructive force on the foam in the liquid, and avoids process instability caused by fluctuations in the defoaming effect. In the gas purification process, the defoaming structure can effectively remove the carried foam, avoid the interference of the foam on the subsequent purification equipment, and improve the efficiency and quality of gas purification.

[0040] like Figures 1 to 3 As shown, in this embodiment, a plurality of second bubble-breaking holes 41 form a plurality of second bubble-breaking parts, each second bubble-breaking part includes a plurality of second bubble-breaking holes 41, and the number of second bubble-breaking holes 41 in each second bubble-breaking part gradually increases from the top of the arc-shaped cover 30 to the bottom of the arc-shaped cover 30. The above arrangement can make the number of second bubble-breaking holes 41 larger, thereby ensuring the efficiency of bubble breaking.

[0041] It should be noted that this gradient design can provide a more precise defoaming effect according to the distribution and characteristics of the foam, and is suitable for treating liquids whose foam density changes with height, such as in regeneration towers and distillation towers. In regeneration towers and distillation towers, the temperature and pressure of the liquid change with height, causing the density and stability of the foam to change accordingly. The gradient design of the number of the second bubble breaking holes 41 can dynamically adjust the defoaming effect according to the change in the liquid state, ensuring that the foam can be effectively controlled at different heights, avoiding liquid flooding, and improving the separation efficiency and stability of the tower. For example, in the solvent regeneration process, this design can effectively handle foam at different stages, improve the solvent regeneration rate, and reduce energy consumption.

[0042] like Figures 1 to 3 As shown, in this embodiment, the size of the second bubble breaking holes 41 in the second bubble breaking portion gradually increases from the top of the arc cover 30 to the bottom of the arc cover 30. The above arrangement can improve the efficiency of bubble breaking.

[0043] Specifically, the gradual change in size can adapt to the change process of foam from large to small, improve the comprehensiveness and efficiency of defoaming, and is suitable for treating liquids with dynamic changes in foam generation and bursting, such as in fermenters and reactors. In fermenters and reactors, the generation and bursting of foam is a dynamic process, with larger foam in the initial stage and smaller foam in the later stage. The gradual change in the size of the second bubble-breaking hole can adjust the destructive force according to the change in foam, ensuring effective treatment of foams of different sizes. This design is particularly important for chemical reactions and biological fermentation processes involving a large amount of foam, which can avoid foam accumulation, maintain good gas-liquid contact, and improve reaction rate and product quality.

[0044] In this embodiment, the defoaming structure and the regeneration tower and carbon dioxide capture system including the same can effectively destroy the surface tension of the droplets, promote the rupture of the foam, and improve the defoaming efficiency by setting the first bubble breaking structure 20 on the substrate 10 and the second bubble breaking structure 40 on the arc cover 30. The corner design of the first bubble breaking hole 21 and the gradual change in the number and size of the second bubble breaking hole 41 further enhance the defoaming effect, effectively prevent the accumulation of foam, and improve the operating stability of the regeneration tower and the overall efficiency of the carbon dioxide capture system. In practical applications, this design can significantly reduce energy consumption and improve production efficiency, and has a wide range of industrial application value.

[0045] Specifically, the defoaming structure of this embodiment has the following advantages:

[0046] Substrate 10-step structure: This structural design increases the surface area and contact area of ​​the defoaming structure, helping to capture and destroy bubbles more effectively.

[0047] Multiple irregular holes: Multiple holes are set on the serrated structure. The irregular shapes of these holes help to increase the contact points between the bubbles and the hole wall, thereby improving the bubble breaking efficiency.

[0048] Multi-angle hole design: The hole has more than 8 corners. This design allows bubbles to have more contact points and a larger contact area when passing through the hole, increasing the possibility of bubble bursting.

[0049] Bubble breaking effect: Due to the irregularity and polygonality of the pore wall, the bubbles are subjected to more shear force and pressure when passing through the pores, which contributes to the rupture and defoaming of the bubbles.

[0050] Guaranteed bubble breaking effect: The multi-angle hole design not only increases the possibility of bubble breaking, but also helps to ensure the bubble breaking effect, ensuring that the bubbles are completely destroyed and reducing residues.

[0051] Applicability: This defoaming structure is suitable for a variety of industrial processes, especially in applications requiring efficient defoaming and cleaning of gas or liquid media.

[0052] The design of this defoaming structure makes full use of physical principles, and improves the efficiency and effect of defoaming by increasing the contact opportunities and area between bubbles and the defoaming structure. This has a positive effect on improving the efficiency of industrial processes, reducing energy consumption, and protecting the environment.

[0053] According to the second aspect of the present application, a regeneration tower is provided. The regeneration tower of this embodiment includes a defoaming structure, and the defoaming structure is the above-mentioned defoaming structure. The above-mentioned defoaming structure can effectively break bubbles, so the regeneration tower with the above-mentioned defoaming structure also has the above-mentioned advantages.

[0054] Specifically, in the application of regeneration towers in the fields of chemical industry and environmental protection, the addition of defoaming structures can significantly improve the separation and regeneration efficiency of liquids in the tower, reduce the flooding caused by foam, and improve the stability and safety of the equipment. It is suitable for processes such as carbon dioxide capture and solvent regeneration. In the regeneration tower, the application of defoaming structures not only improves the efficiency of liquid treatment, but also reduces the frequency of equipment maintenance and reduces operating costs.

[0055] For example, in the carbon dioxide capture system, the defoaming structure can effectively handle the foam brought in by the absorption solvent, prevent the foam from clogging the flow channel in the tower, improve the carbon dioxide capture efficiency, and reduce the system energy consumption, which is of great significance for achieving the carbon neutrality goal.

[0056] According to the third aspect of the present application, a carbon dioxide capture system is provided, comprising a regeneration tower, wherein the regeneration tower is the above-mentioned regeneration tower. The above-mentioned regeneration tower can achieve bubble breaking and can ensure the efficiency of bubble breaking, so the carbon dioxide capture device having the above-mentioned regeneration tower also has the above-mentioned advantages.

[0057] Specifically, by optimizing the defoaming structure, the carbon dioxide capture system can capture and separate carbon dioxide more efficiently, reduce energy consumption, and improve the economic and environmental benefits of the overall system. It is suitable for carbon dioxide emission reduction and resource recycling in industrial fields such as thermal power plants, cement plants, and steel plants. In the carbon dioxide capture system, the regeneration tower is a key component, and the optimization of the defoaming structure further improves the working performance of the regeneration tower.

[0058] For example, in the flue gas decarbonization process of a thermal power plant, the defoaming structure can effectively control the foam of the solvent in the regeneration tower, accelerate the release of carbon dioxide, improve the decarbonization efficiency, and reduce the processing cost, which plays an important role in achieving a green and low-carbon power generation model.

[0059] The defoaming structure and the regeneration tower and carbon dioxide capture system including the same can effectively destroy the surface tension of the droplets, promote the breakage of the foam, and improve the defoaming efficiency by arranging the first bubble breaking structure 20 on the substrate 10 and the second bubble breaking structure 40 on the arc cover 30. The corner design of the first bubble breaking hole 21 and the gradual change in the number and size of the second bubble breaking holes 41 further enhance the defoaming effect, effectively prevent the accumulation of foam, and improve the operating stability of the regeneration tower and the overall efficiency of the carbon dioxide capture system.

[0060] In practical applications, this design can significantly reduce energy consumption and improve production efficiency, and has a wide range of industrial application value. For example, in the food industry, the defoaming structure can effectively control the foam in the fermentation process to prevent foam overflow and affect the production environment and product quality. In the field of water treatment, the defoaming structure can reduce the overflow problem caused by foam and improve the efficiency and safety of wastewater treatment. In chemical production, the optimized defoaming structure can improve the processing capacity of the tower, reduce the flooding phenomenon caused by foam, ensure the continuity and stability of the production process, reduce production costs, and improve the economic and environmental benefits of the enterprise.

[0061] In general, the defoaming structure of this embodiment and its application in the regeneration tower and carbon dioxide capture system not only targets the foam problems in the chemical, petroleum, pharmaceutical and other industries, but also extends to the food industry, water treatment, environmental protection and other fields, showing its application potential and value in different industrial environments. Through scientific design and optimization, the defoaming structure not only improves the defoaming efficiency, but also enhances the stability and safety of the equipment, reduces energy consumption, and improves production efficiency. It is of great significance to promote green and low-carbon production models and achieve sustainable development. This innovative design provides an efficient and environmentally friendly foam control solution for industrial production, which helps enterprises reduce costs and improve product quality. It also contributes to environmental protection and demonstrates the social value and innovation potential of technological progress.

[0062] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0063] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0064] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0065] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A defoaming structure, characterized in that: include: base(10); A first bubble breaking structure (20) is arranged on the substrate (10); An arc-shaped cover (30) is arranged on the substrate (10); A second bubble breaking structure (40) is arranged on the arc-shaped cover (30); The first bubble-breaking structure (20) comprises a plurality of first bubble-breaking holes (21), and each of the first bubble-breaking holes (21) has a plurality of corners.

2. The defoaming structure according to claim 1, characterized in that: The base plate (10) comprises a plurality of first plate bodies (11), a plurality of second plate bodies (12) and a plurality of connecting plates (13); the first plate bodies (11) and the second plate bodies (12) are arranged at intervals, the first plate body (11) is located between two adjacent second plate bodies (12), and the connecting plate (13) is connected between the first plate body (11) and the second plate body (12).

3. The defoaming structure according to claim 2, characterized in that: The plurality of first bubble-breaking holes (21) form a plurality of first bubble-breaking portions, and each of the first plate bodies (11), each of the second plate bodies (12) and each of the connecting plates (13) is provided with a first bubble-breaking portion.

4. The defoaming structure according to claim 3, characterized in that: The shapes of the first bubble breaking holes (21) in each of the first bubble breaking parts are different.

5. The defoaming structure according to claim 1, characterized in that: The number of corners of each of the first bubble-breaking holes (21) is greater than 8.

6. The defoaming structure according to claim 1, characterized in that: The second cell-breaking structure (40) includes a plurality of second cell-breaking holes (41), and each of the second cell-breaking holes (41) has the same number of corners.

7. The defoaming structure according to claim 6, characterized in that: A plurality of second bubble-breaking holes (41) form a plurality of second bubble-breaking sections, each of which includes a plurality of second bubble-breaking holes (41). In a direction from the top of the arc-shaped cover (30) to the bottom of the arc-shaped cover (30), the number of the second bubble-breaking holes (41) of each second bubble-breaking section gradually increases.

8. The defoaming structure according to claim 7, characterized in that: In a direction from the top of the arc-shaped cover (30) to the bottom of the arc-shaped cover (30), the size of the second bubble breaking hole (41) in the second bubble breaking portion gradually increases.

9. A regeneration tower, comprising a defoaming structure, characterized in that: The defoaming structure is the defoaming structure according to any one of claims 1 to 8.

10. A carbon dioxide capture system comprising a regeneration tower, characterized in that: The regeneration tower is the regeneration tower according to claim 9.

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