Carbon dioxide absorption device and carbon dioxide capture system having the same.

Abstract

This invention provides a carbon dioxide absorption device and a carbon dioxide capture system having the same. The carbon dioxide absorption device includes: an absorption tower; an inlet located at the bottom of the absorption tower; an outlet located at the top of the absorption tower; a liquid inlet located at the top of the absorption tower and below the outlet; a liquid outlet located at the bottom of the absorption tower and above the inlet; a phase-separating structure located inside the absorption tower, the phase-separating structure having multiple spaced-apart collection tanks; and a discharge outlet located on the side wall of the absorption tower and corresponding to the phase-separating structure. The technical solution of this application effectively solves the problem in related technologies where both the light phase solution and the heavy phase solution enter the next process, leading to waste of carbon dioxide absorbent.

Description

Technical Field

[0001] This invention relates to the fields of chemical and environmental protection technology, and more specifically, to a carbon dioxide absorption device and a carbon dioxide capture system having the same. Background Technology

[0002] With industrialization, carbon dioxide emissions have increased dramatically, causing severe environmental pollution and contributing to global warming and the greenhouse effect. To reduce these emissions, carbon dioxide capture technology has been widely adopted. Industrial waste gas rich in carbon dioxide is passed into an absorption tower. The carbon dioxide absorbent inside absorbs the carbon dioxide from the waste gas. The reacted absorbent settles to the bottom of the tower and is then passed into a regeneration tower. After regeneration through circulating spraying and heating, the carbon dioxide is released from the absorbent, and the absorbent is then passed back into the absorption tower for reuse. However, due to reaction efficiency issues, some absorbent may react completely with the carbon dioxide, forming a heavy phase solution, while some may not react completely, forming a light phase solution, which can still absorb carbon dioxide.

[0003] In related technologies, both the light phase solution and the heavy phase solution are passed into a regeneration tower for regeneration, which affects the carbon dioxide absorption efficiency and consumes a large amount of carbon dioxide absorbent. Summary of the Invention

[0004] The main objective of this invention is to provide a carbon dioxide absorption device and a carbon dioxide capture system having the same, in order to solve the problem in related technologies where both the light phase solution and the heavy phase solution enter the next process, resulting in waste of carbon dioxide absorbent.

[0005] To achieve the above objectives, the present invention provides a carbon dioxide absorption device, comprising: an absorption tower; an inlet disposed at the bottom of the absorption tower; an outlet disposed at the top of the absorption tower; a liquid inlet disposed at the top of the absorption tower and below the outlet; a liquid outlet disposed at the bottom of the absorption tower and above the inlet; a phase-separating structure disposed inside the absorption tower, the phase-separating structure having a plurality of spaced-apart collection tanks; and a discharge outlet disposed on the side wall of the absorption tower and corresponding to the phase-separating structure.

[0006] Furthermore, the phase separation structure also includes a first partition plate and a plurality of second partition plates disposed on the first partition plate, with a collection trough formed between two adjacent second partition plates.

[0007] Furthermore, each second partition plate is provided with at least one flow guide port, and the distance between the flow guide port and the first partition plate is greater than the distance between the flow guide port and the end of the second partition plate away from the first partition plate.

[0008] Furthermore, the outlet is positioned higher than the guide port.

[0009] Furthermore, multiple through holes are arranged in an array on the first partition plate.

[0010] Furthermore, the size of the through hole is between 1mm and 5mm.

[0011] Furthermore, the carbon dioxide absorption device also includes a distributor, which is disposed inside the absorption tower and below the phase separation structure.

[0012] Furthermore, the distributor includes a plurality of third partition plates spaced apart and a plurality of blocking members, with the blocking members corresponding one-to-one with the plurality of third partition plates, and the blocking members being positioned on top of the corresponding third partition plates.

[0013] Furthermore, the width of the blocking element gradually increases from the top to the bottom of the absorption tower.

[0014] According to another aspect of this application, a carbon dioxide capture system is provided, including a carbon dioxide absorption device, which is the carbon dioxide absorption device described above.

[0015] The technical solution of this invention involves an air inlet located at the bottom of the absorption tower, an air outlet located at the top of the absorption tower, a liquid inlet located at the top of the absorption tower and below the air outlet, and a liquid outlet located at the bottom of the absorption tower and above the air inlet. A phase-separating structure is located inside the absorption tower, comprising multiple spaced-apart collection tanks. An outlet is located on the side wall of the absorption tower and corresponding to the phase-separating structure. Through this arrangement, flue gas enters the absorption tower through the air inlet, passes through the phase-separating structure, and reacts with the absorption solution entering through the liquid inlet. The reacted absorption solution falls into the multiple collection tanks and separates into light and heavy phase solutions. The light phase solution is located above the heavy phase solution and can be discharged through the outlet, allowing for further absorption of the light phase solution. Therefore, the technical solution of this application effectively solves the problem in related technologies where both the light and heavy phase solutions enter the next process, leading to waste of carbon dioxide absorbent. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0017] Figure 1 A three-dimensional structural schematic diagram of an embodiment of the carbon dioxide absorption device according to the present invention is shown;

[0018] Figure 2 It shows Figure 1 A schematic diagram of the exploded structure of a carbon dioxide absorption device;

[0019] Figure 3 It shows Figure 2 A three-dimensional structural diagram of the phase-separated structure of a carbon dioxide absorption device;

[0020] Figure 4 It shows Figure 1 A cross-sectional schematic diagram of a carbon dioxide absorption device;

[0021] Figure 5 It shows Figure 1 A cross-sectional schematic diagram of a carbon dioxide absorption device from another perspective;

[0022] Figure 6 It shows Figure 5 A magnified view of part A of the carbon dioxide absorption device;

[0023] Figure 7 It shows Figure 1 A three-dimensional structural diagram of a portion of a carbon dioxide absorption device.

[0024] The above figures include the following reference numerals:

[0025] 10. Absorption tower; 21. Air inlet; 22. Air outlet; 23. Liquid inlet; 24. Liquid outlet; 30. Phase separation structure; 31. Collection tank; 32. First partition plate; 321. Through hole; 33. Second partition plate; 331. Flow guide; 40. Discharge outlet; 50. Distributor; 51. Third partition plate; 52. Blocking component. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0028] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0029] like Figure 1 , Figure 2 , Figure 5 as well as Figure 7 As shown, in this embodiment, the carbon dioxide absorption device includes: an absorption tower 10, an inlet 21, an outlet 22, a liquid inlet 23, a liquid outlet 24, a phase-separating structure 30, and a discharge outlet 40. The inlet 21 is located at the bottom of the absorption tower 10. The outlet 22 is located at the top of the absorption tower 10. The liquid inlet 23 is located at the top of the absorption tower 10 and below the outlet 22. The outlet 24 is located at the bottom of the absorption tower 10 and above the inlet 21. The phase-separating structure 30 is located inside the absorption tower 10 and has multiple spaced-apart collection tanks 31. The discharge outlet 40 is located on the side wall of the absorption tower 10 and is correspondingly arranged to the phase-separating structure 30.

[0030] Using the technical solution of this embodiment, the air inlet 21 is located at the bottom of the absorption tower 10, the air outlet 22 is located at the top of the absorption tower 10, the liquid inlet 23 is located at the top of the absorption tower 10 and below the air outlet 22, and the liquid outlet 24 is located at the bottom of the absorption tower 10 and above the air inlet 21. A phase-separating structure 30 is located inside the absorption tower 10, and the phase-separating structure 30 has multiple spaced-apart collection tanks 31. An outlet 40 is located on the side wall of the absorption tower 10 and is correspondingly arranged with the phase-separating structure 30. With the above arrangement, flue gas enters the interior of the absorption tower 10 through the air inlet 21, passes through the phase-separating structure 30, and reacts with the absorption solution entering through the liquid inlet 23. The reacted absorption solution falls into the multiple collection tanks 31 and can stratify within the collection tanks 31, that is, the light phase solution and the heavy phase solution are stratified. The light phase solution is located above the heavy phase solution and can be discharged through the outlet 40, thereby enabling the light phase solution to be absorbed again. Therefore, the technical solution of this embodiment effectively solves the problem in related technologies where both the light phase solution and the heavy phase solution enter the next process, resulting in waste of carbon dioxide absorbent.

[0031] Specifically, this design significantly improves absorption efficiency and reduces energy consumption by optimizing gas-liquid distribution. In practical applications, the carbon dioxide absorption device of this embodiment can substantially reduce carbon dioxide emissions. For high-emission enterprises such as coal-fired power plants, oil refineries, and chemical plants, it not only enhances their environmental image but also meets increasingly stringent emission standards. Furthermore, due to its compact structure and ease of operation, it is also suitable for small laboratories for researching novel carbon dioxide absorption materials and process optimization.

[0032] like Figures 2 to 7 As shown, in this embodiment, the phase separation structure 30 further includes a first partition plate 32 and a plurality of second partition plates 33 disposed on the first partition plate 32, with a collection trough 31 formed between two adjacent second partition plates 33. The above configuration is relatively simple and easy to implement. Furthermore, the combination of the first partition plate 32 and the second partition plate 33 can more effectively achieve gas-liquid separation, avoid liquid entrainment, and improve the working performance of the absorption tower 10, making it particularly suitable for handling high gas velocity and high liquid-to-gas ratio conditions.

[0033] Specifically, the introduction of the phase-separated structure 30 effectively solves the problem of droplet entrainment during high-speed gas flow, improves liquid recovery rate, and reduces secondary pollution. In industrial production, especially when handling high-concentration carbon dioxide mixtures, this design can significantly improve absorption efficiency, reduce equipment maintenance costs, and extend equipment lifespan, making it an ideal choice for companies pursuing efficient production processes.

[0034] like Figures 2 to 7As shown, in this embodiment, each second partition plate 33 is provided with at least one flow guide port 331. The distance between the flow guide port 331 and the first partition plate 32 is greater than the distance between the flow guide port 331 and the end of the second partition plate 33 furthest from the first partition plate 32. The flow guide port 331 enables the flow of the light phase solution, that is, the light phase solution can flow through the flow guide port 331, thereby realizing the flow of the light phase solution. Furthermore, this design can guide the liquid flow direction, reduce liquid turbulence, improve the uniformity of liquid distribution, and thus enhance the absorption effect of carbon dioxide, making it suitable for occasions requiring high-precision absorption control.

[0035] It should be noted that the design of the guide port 331 cleverly controls the flow direction of the liquid, reducing the impact of turbulence on the absorption process. This improvement is particularly suitable for industries such as bio-fermentation and food processing, which often require precise control of carbon dioxide recovery to ensure product quality and production efficiency. By optimizing the position and size of the guide port 331, more precise absorption control can be achieved, meeting high-standard industrial requirements.

[0036] like Figures 2 to 7 As shown, in this embodiment, the outlet 40 is positioned higher than the guide port 331. This arrangement ensures that only light-phase solutions flow out through the outlet 40. Furthermore, this arrangement allows gravity to be used, enabling the liquid to flow naturally towards the collection tank, while the gas is discharged from the outlet, reducing additional power requirements and lowering the energy consumption of the device. This makes it suitable for industrial applications that prioritize energy efficiency and economy.

[0037] Specifically, by utilizing gravity-driven natural drainage, the carbon dioxide absorption device not only simplifies the operation process but also significantly reduces operating costs. In large-scale applications, this energy-efficient design is crucial for improving the overall system's economic benefits. For example, in large-scale carbon dioxide capture projects, this design can substantially reduce electricity consumption, lower operating costs, and minimize environmental impact, embodying the concept of green production.

[0038] like Figures 2 to 7 As shown, in this embodiment, a plurality of through holes 321 are arranged in an array on the first partition plate 32. The through holes 321 allow the heavy phase solution to flow out. Furthermore, the design of the through holes 321 can further optimize the airflow distribution, avoid excessive local airflow that could cause liquid splashing, and improve the stability and absorption efficiency of the absorption tower 10, making it suitable for environments requiring precise airflow control.

[0039] Specifically, the arrangement of the 321-hole array effectively balances the airflow velocity, ensuring sufficient gas-liquid contact, reducing splashing, and preventing a decrease in absorption efficiency. This precise control is particularly important for handling sensitive gas mixtures; for example, in the biopharmaceutical industry, high-precision gas control directly impacts drug quality control and the safety of the production process. The carbon dioxide absorption device designed in this embodiment provides a reliable carbon dioxide capture solution for these industries.

[0040] like Figures 2 to 7 As shown, in this embodiment, the size of the through-hole 321 is between 1 mm and 5 mm. This design prevents the heavy phase solution from being directly discharged, allowing the carbon dioxide absorbent to stratify within the collection tank 31. Furthermore, this size range of through-holes 321 effectively balances the resistance to gas flow and the distribution of liquid, ensuring both sufficient gas-liquid contact area and avoiding excessive pressure drop. This design is suitable for carbon dioxide absorption devices of various sizes, from small laboratory equipment to large industrial facilities.

[0041] Specifically, the choice of the 321 through-hole size ensures optimal gas-liquid contact in devices of different sizes, avoiding unnecessary energy waste. This flexible design is particularly suitable for diverse industrial environments, maintaining stable performance in both small-batch laboratory testing and large-scale factory production. This reduces the difficulty of adapting to different application scenarios and enhances the device's market competitiveness.

[0042] like Figures 2 to 7 As shown, in this embodiment, the carbon dioxide absorption device also includes a distributor 50, which is disposed inside the absorption tower 10 and below the phase separation structure 30. The distributor 50 enables more uniform separation of the flue gas, thereby allowing it to react better with the carbon dioxide absorbent. Furthermore, the distributor 50 ensures that the liquid is evenly distributed across the cross-section of the absorption tower 10, avoiding localized oversaturation and improving the uniformity and efficiency of absorption, making it suitable for scenarios requiring high absorption rates and high absorption precision.

[0043] Specifically, the addition of distributor 50 further optimizes liquid distribution, ensuring consistent absorption across the entire cross-section. This is crucial for improving absorption rates, especially when handling high-flow-rate gases. For example, in food processing, rapid and uniform carbon dioxide capture is essential for maintaining food freshness and extending shelf life. This design meets the demands for high-precision absorption, providing strong technical support for related industries.

[0044] like Figures 2 to 7As shown, in this embodiment, the distributor 50 includes a plurality of third partition plates 51 spaced apart and a plurality of blocking members 52. The blocking members 52 are arranged one-to-one with the plurality of third partition plates 51, and are positioned on top of the corresponding third partition plate 51. The above structure is relatively simple and easy to install. Furthermore, this structure can effectively disperse the liquid, preventing it from directly impacting the bottom of the absorption tower 10, reducing the blind zone of gas-liquid contact, and improving the overall absorption capacity of the absorption tower 10.

[0045] Specifically, the combined use of the third partition plate 51 and the baffle 52 effectively prevents liquid from accumulating at the bottom of the absorption tower, improving the gas-liquid contact efficiency of the entire tower. This design is particularly suitable for applications requiring efficient gas absorption in confined spaces, such as carbon dioxide capture on offshore oil platforms or air purification systems in underground facilities. It ensures sufficient gas absorption even in space-constrained conditions, reducing environmental pollution and ensuring operational safety.

[0046] like Figures 2 to 7 As shown, in this embodiment, the width of the baffle 52 gradually increases from the top to the bottom of the absorption tower 10. This arrangement improves the baffle effect. Furthermore, this design optimizes the airflow path, resulting in a more uniform gas distribution within the absorption tower 10, reducing airflow short-circuiting, and improving the stability and absorption efficiency of the carbon dioxide absorption device. It is particularly suitable for processing mixtures containing large amounts of gas.

[0047] Specifically, the gradually changing width of the baffle 52 effectively guides the airflow, preventing short-circuiting of the gas within the absorber tower 10 and ensuring sufficient and uniform gas-liquid contact. This characteristic is particularly prominent when treating complex mixtures containing large amounts of different gases, such as in the waste gas treatment of oil refineries or chemical plants. It can more effectively capture carbon dioxide while separating it from other gases, facilitating subsequent gas treatment or recycling. This design allows the absorber tower to handle higher gas volumes, reducing carbon dioxide emissions from large industrial facilities and contributing to the promotion of green and low-carbon development goals.

[0048] According to another aspect of this application, a carbon dioxide capture system is provided. This embodiment of the carbon dioxide capture system includes a carbon dioxide absorption device, which is the aforementioned carbon dioxide absorption device. The aforementioned carbon dioxide absorption device can separate the light phase solution and the heavy phase solution, thereby preventing the light phase solution from entering the next process. Therefore, the carbon dioxide capture system with the aforementioned carbon dioxide absorption device also has the aforementioned advantages. Furthermore, through the optimized design of the aforementioned carbon dioxide absorption device, the carbon dioxide capture system can achieve efficient, stable, and economical carbon dioxide capture, applicable to multiple fields such as chemical industry, energy, and environmental protection. It is suitable for capturing carbon dioxide from industrial emission sources such as coal-fired power plants, cement plants, and steel plants, as well as for carbon dioxide recovery in processes such as bio-fermentation and food processing. This is of great significance for reducing greenhouse gas emissions and achieving carbon neutrality goals.

[0049] Specifically, the innovative design of the carbon dioxide capture system in this embodiment not only represents a technological breakthrough but also demonstrates broad value in practical applications. It can significantly reduce carbon dioxide emissions from industry, having a profound impact on promoting global carbon neutrality, mitigating the greenhouse effect, and protecting the ecological environment. Particularly in energy-intensive industries such as power, steel, and chemicals, this system effectively reduces carbon emissions, helping companies meet environmental regulations. Simultaneously, by recycling carbon dioxide, it can create new economic value, such as for use as raw materials in the beverage industry, greenhouse agriculture, or synthetic chemicals, achieving a dual improvement in environmental and economic benefits. Furthermore, the system's modular design facilitates maintenance and upgrades, further reducing long-term operating costs and enhancing its market competitiveness.

[0050] It should be noted that the carbon dioxide absorption device and system of this embodiment not only achieves optimized gas-liquid separation and liquid distribution in terms of technology, but also demonstrates broad adaptability and significant environmental benefits in practical applications. By precisely controlling the airflow and liquid flow inside the absorption tower 10, the carbon dioxide capture efficiency can be significantly improved, while reducing energy consumption and operating costs, providing strong technical support for carbon dioxide emission reduction in industrial production. Furthermore, the carbon dioxide absorption device of this embodiment has high design flexibility and can be adjusted according to different application scenarios and needs, such as for studying carbon dioxide absorption mechanisms in laboratories or for large-scale carbon dioxide capture in large industrial facilities, demonstrating its dual value in scientific research and practical production. In summary, the carbon dioxide absorption device and system of this application provide an innovative and practical technical solution for achieving global carbon neutrality goals, reducing greenhouse gas emissions, and protecting the Earth's environment.

[0051] Furthermore, the carbon dioxide absorption device and system of this embodiment not only possess significant technological advantages but also generate positive social and economic impacts. It adapts to various operating conditions, from in-depth laboratory research to large-scale industrial applications, demonstrating strong adaptability and a wide range of applicability. In scientific research, this device can serve as an experimental platform for researching new materials and methods for carbon dioxide capture, accelerating the transformation of research results. In actual production, it can help enterprises and industries achieve emission reduction targets, reduce environmental impact, lower production costs, and improve overall economic efficiency. This technological innovation not only aligns with the current global trend of sustainable development but also provides a powerful tool for achieving carbon neutrality and building a green economic system. With continuous technological advancements and expanded applications, the carbon dioxide absorption device and system of this embodiment are expected to play an even more important role in the future, contributing to building a cleaner, greener, and more sustainable world.

[0052] Specifically, the carbon dioxide absorption device and system of this embodiment, by setting a phase separation structure 30 inside the absorption tower 10, can effectively separate the gas and liquid phases, improving absorption efficiency. Simultaneously, the distributor 50 ensures more uniform liquid distribution, further enhancing the carbon dioxide absorption effect. Furthermore, by controlling the width variation of the baffle 52, airflow distribution can be optimized, reducing airflow short-circuiting and improving the overall operational stability and absorption capacity of the device. This design is suitable not only for large-scale industrial production but also for small laboratory equipment, possessing broad applicability and significant environmental benefits, providing an effective technical means to reduce greenhouse gas emissions and achieve carbon neutrality.

[0053] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms 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, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0054] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0055] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0056] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A carbon dioxide absorption device, characterized in that, include: Absorption tower (10); An air inlet (21) is located at the bottom of the absorption tower (10); An outlet (22) is located at the top of the absorption tower (10); The liquid inlet (23) is located at the top of the absorption tower (10) and below the gas outlet (22); The liquid outlet (24) is located at the bottom of the absorption tower (10) and above the air inlet (21); A phase separation structure (30) is disposed inside the absorption tower (10), and the phase separation structure (30) has a plurality of spaced collection tanks (31). The outlet (40) is provided on the side wall of the absorption tower (10) and is provided corresponding to the phase separation structure (30); The phase separation structure (30) further includes a first partition plate (32) and a plurality of second partition plates (33) disposed on the first partition plate (32), wherein a collection groove (31) is formed between two adjacent second partition plates (33). The first partition plate (32) has multiple through holes (321) arranged in an array.

2. The carbon dioxide absorption device according to claim 1, characterized in that, Each of the second partition plates (33) is provided with at least one flow guide (331), and the distance between the flow guide (331) and the first partition plate (32) is greater than the distance between the flow guide (331) and the end of the second partition plate (33) away from the first partition plate (32).

3. The carbon dioxide absorption device according to claim 2, characterized in that, The position of the outlet (40) is higher than the position of the guide port (331).

4. The carbon dioxide absorption device according to claim 1, characterized in that, The size of the through hole (321) is between 1 mm and 5 mm.

5. The carbon dioxide absorption device according to claim 1, characterized in that, The carbon dioxide absorption device also includes a distributor (50), which is disposed inside the absorption tower (10) and below the phase separation structure (30).

6. The carbon dioxide absorption device according to claim 5, characterized in that, The distributor (50) includes a plurality of third partition plates (51) spaced apart and a plurality of blocking members (52), wherein the plurality of blocking members (52) are arranged one-to-one with the plurality of third partition plates (51), and the blocking members (52) are arranged on the top of the corresponding third partition plate (51).

7. The carbon dioxide absorption device according to claim 6, characterized in that, The width of the blocking member (52) gradually increases from the top of the absorption tower (10) to the bottom of the absorption tower (10).

8. A carbon dioxide capture system, comprising a carbon dioxide absorption device, characterized in that, The carbon dioxide absorption device is the carbon dioxide absorption device according to any one of claims 1 to 7.

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