Carbon dioxide absorption device and carbon dioxide capture system with same

Abstract

The invention provides a carbon dioxide absorption device and a carbon dioxide trapping system with the carbon dioxide absorption device, and the carbon dioxide absorption device comprises an absorption tower; the gas inlet is formed in the bottom of the absorption tower; the gas outlet is formed in the top of the absorption tower; the liquid inlet is formed in the top of the absorption tower and is positioned below the gas outlet; the liquid outlet is formed in the bottom of the absorption tower and is positioned above the gas inlet; the phase splitting structure is arranged in the absorption tower and is provided with a plurality of collecting tanks which are arranged at intervals; the discharge port is formed in the side wall of the absorption tower and corresponds to the phase splitting structure. According to the technical scheme, the problem that the carbon dioxide absorbent is wasted due to the fact that the light-phase solution and the heavy-phase solution enter the next procedure in the prior art is effectively solved.

Description

Technical Field

[0001] The present invention relates to the field of chemical engineering and environmental protection technology, and in particular to a carbon dioxide absorption device and a carbon dioxide capture system having the same. 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 at the same time caused problems such as global warming and intensified greenhouse effect. 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, and the carbon dioxide absorbent after the reaction will be passed into the regeneration tower. After the cycle spray heating regeneration, the carbon dioxide in the carbon dioxide absorbent will be precipitated, and the carbon dioxide absorbent will continue to be passed into the absorption tower for recycling. In the absorption tower, due to the problem of reaction efficiency, part of the carbon dioxide absorbent may react completely with carbon dioxide to become a heavy phase solution, and part of the carbon dioxide absorbent may not react completely with carbon dioxide to become a light phase solution, and the light phase solution can still absorb carbon dioxide.

[0003] In the related art, the light phase solution and the heavy phase solution are all introduced 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 purpose of the present invention is to provide a carbon dioxide absorption device and a carbon dioxide capture system having the same, so as to solve the problem in the related art that both the light phase solution and the heavy phase solution enter the next process, thereby resulting in waste of carbon dioxide absorbent.

[0005] In order to achieve the above-mentioned purpose, the present invention provides a carbon dioxide absorption device, comprising: an absorption tower; an air inlet, arranged at the bottom of the absorption tower; an air outlet, arranged at the top of the absorption tower; a liquid inlet, arranged at the top of the absorption tower and located below the air outlet; a liquid outlet, arranged at the bottom of the absorption tower and located above the air inlet; a phase separation structure, arranged inside the absorption tower, the phase separation structure having a plurality of collection tanks arranged at intervals; and a discharge port, arranged on the side wall of the absorption tower and arranged corresponding to the phase separation structure.

[0006] Furthermore, the phase separation structure also includes a first separation plate and a plurality of second separation plates arranged on the first separation plate, and a collecting tank is formed between two adjacent second separation plates.

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

[0008] Furthermore, the position of the discharge port is higher than the position of the guide port.

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

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

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

[0012] Furthermore, the distributor includes a plurality of third partition plates arranged at intervals and a plurality of blocking members, the plurality of blocking members are arranged in one-to-one correspondence with the plurality of third partition plates, and the blocking members are arranged on top of the corresponding third partition plates.

[0013] Furthermore, the width of the barrier gradually increases in a direction from the top of the absorption tower to the bottom of the absorption tower.

[0014] According to another aspect of the present application, a carbon dioxide capture system is provided, including a carbon dioxide absorption device, and the carbon dioxide absorption device is the above-mentioned carbon dioxide absorption device.

[0015] According to the technical solution of the present invention, the air inlet is arranged at the bottom of the absorption tower, the air outlet is arranged at the top of the absorption tower, the liquid inlet is arranged at the top of the absorption tower and is located below the air outlet, and the liquid outlet is arranged at the bottom of the absorption tower and is located above the air inlet. The phase separation structure is arranged inside the absorption tower, and the phase separation structure has a plurality of collection tanks arranged at intervals, and the discharge port is arranged on the side wall of the absorption tower and is arranged corresponding to the phase separation structure. Through the above-mentioned arrangement, the flue gas enters the interior of the absorption tower through the air inlet, passes through the phase separation structure and contacts and reacts with the absorption solution entering through the liquid inlet, and the absorption solution after the reaction falls into a plurality of collection tanks, and can be stratified in the collection tanks, that is, the light phase solution and the heavy phase solution are stratified, and the light phase solution is located above the heavy phase solution and can be discharged through the discharge port, so that the light phase solution can be absorbed again. Therefore, the technical solution of the present application effectively solves the problem in the related art that both the light phase solution and the heavy phase solution enter the next process, thereby resulting in waste of carbon dioxide absorbent. 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 carbon dioxide absorption device according to the present invention is shown;

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

[0019] Figure 3 Shows Figure 2 A schematic diagram of the three-dimensional structure of the phase separation structure of the carbon dioxide absorption device;

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

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

[0022] Figure 6 Shows Figure 5 A partial enlarged view of the carbon dioxide absorption device at point A;

[0023] Figure 7 Shows Figure 1 A three-dimensional structural schematic diagram of a partial structure of a carbon dioxide absorption device.

[0024] The above drawings 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. Collecting tank; 32. First partition plate; 321. Through hole; 33. Second partition plate; 331. Guide port; 40. Exhaust port; 50. Distributor; 51. Third partition plate; 52. Blocking member. DETAILED DESCRIPTION

[0026] 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.

[0027] 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.

[0028] 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.

[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 air inlet 21, an air outlet 22, a liquid inlet 23, a liquid outlet 24, a phase separation structure 30 and a discharge port 40. The air inlet 21 is arranged at the bottom of the absorption tower 10. The air outlet 22 is arranged at the top of the absorption tower 10. The liquid inlet 23 is arranged at the top of the absorption tower 10 and is located below the air outlet 22. The liquid outlet 24 is arranged at the bottom of the absorption tower 10 and is located above the air inlet 21. The phase separation structure 30 is arranged inside the absorption tower 10, and the phase separation structure 30 has a plurality of collection tanks 31 arranged at intervals. The discharge port 40 is arranged on the side wall of the absorption tower 10 and is arranged corresponding to the phase separation structure 30.

[0030] The technical solution of this embodiment is applied, the air inlet 21 is arranged at the bottom of the absorption tower 10, the air outlet 22 is arranged at the top of the absorption tower 10, the liquid inlet 23 is arranged at the top of the absorption tower 10 and is located below the air outlet 22, and the liquid outlet 24 is arranged at the bottom of the absorption tower 10 and is located above the air inlet 21. The phase separation structure 30 is arranged inside the absorption tower 10, and the phase separation structure 30 has a plurality of collection tanks 31 arranged at intervals, and the discharge port 40 is arranged on the side wall of the absorption tower 10 and is arranged corresponding to the phase separation structure 30. Through the above arrangement, the flue gas enters the interior of the absorption tower 10 through the air inlet 21, passes through the phase separation structure 30 and contacts and reacts with the absorption solution entering through the liquid inlet 23, and the absorption solution after the reaction falls into the plurality of collection tanks 31, and can be stratified in the collection tanks 31, that is, the light phase solution and the heavy phase solution are stratified, and the light phase solution is located above the heavy phase solution and can be discharged through the discharge port 40, so that the light phase solution can be absorbed again. Therefore, the technical solution of this embodiment effectively solves the problem in the related art that both the light phase solution and the heavy phase solution enter the next process, thereby resulting in waste of carbon dioxide absorbent.

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

[0032] like Figures 2 to 7 As shown, in this embodiment, the phase separation structure 30 also includes a first partition plate 32 and a plurality of second partition plates 33 arranged on the first partition plate 32, and a collecting tank 31 is formed between two adjacent second partition plates 33. The above-mentioned setting is relatively simple and easy to set up. And through the combination of the first partition plate 32 and the second partition plate 33, gas-liquid separation can be more effectively achieved, liquid entrainment can be avoided, and the working performance of the absorption tower 10 can be improved, which is particularly suitable for processing high gas velocity and high liquid-gas ratio conditions.

[0033] Specifically, the introduction of the phase separation structure 30 effectively solves the problem of droplet entrainment during high-speed gas flow, improves the recovery rate of liquid, and reduces secondary pollution. In industrial production, especially when dealing with high-concentration carbon dioxide mixed gas, this design can significantly improve absorption efficiency, reduce equipment maintenance costs, and extend equipment life. It is 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 guide port 331, and the distance between the guide port 331 and the first partition plate 32 is greater than the distance between the guide port 331 and the end of the second partition plate 33 away from the first partition plate 32. The setting of the guide port 331 can realize the flow of the light phase solution, that is, the light phase solution can flow through the guide port 331, and then the flow of the light phase solution can be realized. And this design can guide the flow direction of the liquid, reduce the turbulence of the liquid, and improve the uniformity of the distribution of the liquid, thereby enhancing the absorption effect of carbon dioxide, and is suitable for occasions requiring high-precision absorption control.

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

[0036] like Figures 2 to 7 As shown, in this embodiment, the position of the discharge port 40 is higher than the position of the guide port 331. The above arrangement can ensure that the light phase solution flows out through the discharge port 40. In addition, such an arrangement can utilize gravity to make the liquid flow naturally to the collection tank, while the gas is discharged from the discharge port, reducing the additional power demand and the energy consumption of the device, which is suitable for industrial applications that pursue energy efficiency and economy.

[0037] Specifically, by utilizing gravity to drain liquid naturally, the CO2 absorption device not only simplifies the operation process, but also significantly reduces the operating cost. In large-scale applications, this energy-efficient design is crucial to improving the economic benefits of the entire system. For example, in large-scale CO2 capture projects, this design can significantly reduce electricity consumption, reduce operating costs, and reduce environmental impact, reflecting 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 arrangement of the through holes 321 enables the heavy phase solution to flow out. In addition, the design of the through holes 321 can further optimize the airflow distribution, avoid excessive local airflow, and cause liquid splashing, thereby improving the stability and absorption efficiency of the absorption tower 10, and is suitable for environments requiring fine airflow control.

[0039] Specifically, the arrangement of the through hole 321 array effectively balances the gas flow velocity, ensures sufficient contact between gas and liquid, reduces splashing, and avoids a decrease in absorption efficiency. This fine control is particularly important for processing sensitive gas mixtures. For example, in the biopharmaceutical industry, high-precision gas control has a direct impact on the quality control of drugs and the safety of the production process. The design of the carbon dioxide absorption device of 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. The above arrangement can prevent the heavy phase solution from being discharged directly, that is, the carbon dioxide absorbent can be stratified in the collection tank 31. And the through holes 321 of this size range can effectively balance the resistance of the gas passing through and the distribution of the liquid, which not only ensures the gas-liquid contact area, but also avoids excessive pressure drop, and is suitable for carbon dioxide absorption devices of various sizes, from small laboratory equipment to large industrial facilities.

[0041] Specifically, the selection of the size of the through hole 321 ensures that the best gas-liquid contact effect can be achieved in devices of different sizes, avoiding unnecessary energy waste. At the same time, this flexible design is particularly suitable for changing industrial environments. Whether it is small-batch testing in the laboratory or large-scale production in the factory, it can maintain stable performance, reduce the difficulty of adapting to different application scenarios, and enhance the market competitiveness of the device.

[0042] like Figures 2 to 7 As shown, in this embodiment, the carbon dioxide absorption device further includes a distributor 50, which is arranged inside the absorption tower 10 and below the phase separation structure 30. The arrangement of the distributor 50 can make the flue gas more evenly distributed, thereby enabling it to react better with the carbon dioxide absorbent. In addition, the arrangement of the distributor 50 can ensure that the liquid is evenly distributed on the cross section of the absorption tower 10, avoiding local oversaturation, improving the uniformity and efficiency of absorption, and is suitable for scenes requiring high absorption rate and high absorption accuracy.

[0043] Specifically, the addition of the distributor 50 further optimizes the distribution of the liquid and ensures the consistency of the absorption process across the entire cross section. This is critical for increasing the absorption rate, especially when dealing with high-flow gas. For example, in food processing, rapid and uniform carbon dioxide capture is of great significance for maintaining food freshness and extending shelf life. This design can meet the needs of high-precision absorption and provide 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 and a plurality of blocking members 52 arranged at intervals, and the plurality of blocking members 52 are arranged one by one corresponding to the plurality of third partition plates 51, and the blocking members 52 are arranged on the top of the corresponding third partition plates 51. The above structure is relatively simple and easy to set up. In addition, this structure can effectively disperse the liquid, prevent the liquid from directly impacting the bottom of the absorption tower 10, reduce the blind area of ​​gas-liquid contact, and improve the overall absorption capacity of the absorption tower 10.

[0045] Specifically, the combination of the third partition plate 51 and the blocking member 52 effectively prevents the liquid from gathering at the bottom of the absorption tower, thereby improving the gas-liquid contact efficiency of the entire tower body. This design is particularly suitable for those occasions where efficient gas absorption is required in a limited space, such as carbon dioxide capture on offshore oil platforms or air purification systems in underground facilities. It can ensure that even in a limited space, sufficient gas absorption can be achieved, reducing environmental pollution and ensuring operational safety.

[0046] like Figures 2 to 7 As shown, in this embodiment, 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. The above arrangement can achieve a better blocking effect. In addition, this design can optimize the airflow path, make the gas distribution in the absorption tower 10 more uniform, reduce the short-circuit phenomenon of the airflow, improve the stability and absorption efficiency of the carbon dioxide absorption device, and is particularly suitable for treating a mixture containing a large amount of gas.

[0047] Specifically, the gradual change in the width of the barrier 52 effectively guides the gas flow, avoids the formation of a short circuit in the absorption tower 10, and ensures the sufficiency and uniformity of the gas-liquid contact. This feature is particularly prominent when treating a complex mixture containing a large number of different gases, such as in the waste gas treatment of refineries or chemical plants, where carbon dioxide can be captured more effectively and separated from other gases, providing convenience for subsequent gas treatment or recycling. This design of the absorption tower can adapt to higher gas processing capacity, reduce carbon dioxide emissions from large industrial facilities, and help promote the development goals of green and low-carbon.

[0048] According to another aspect of the present application, a carbon dioxide capture system is provided. The carbon dioxide capture system of this embodiment includes a carbon dioxide absorption device, and the carbon dioxide absorption device is the above-mentioned carbon dioxide absorption device. The above-mentioned carbon dioxide absorption device can achieve the separation of the light phase solution and the heavy phase solution, and thus can prevent the light phase solution from entering the next step. Therefore, the carbon dioxide capture system with the above-mentioned carbon dioxide absorption device also has the above-mentioned advantages. And the carbon dioxide capture system can achieve efficient, stable and economical carbon dioxide capture through the above-mentioned optimized carbon dioxide absorption device, which is suitable for chemical industry, energy, environmental protection and other fields, such as carbon dioxide capture from industrial emission sources such as coal-fired power plants, cement plants, and steel plants, as well as carbon dioxide recovery in biological fermentation, food processing and other processes, which 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 of this embodiment has not only achieved a breakthrough in technology, but also demonstrated extensive value in practical applications. It can significantly reduce the carbon dioxide content in industrial emissions, and has a far-reaching impact on promoting the global carbon neutrality process, reducing the greenhouse effect, and protecting the ecological environment. Especially in energy-intensive industries such as electricity, steel, and chemicals, the system can effectively reduce carbon emissions and help companies meet environmental regulations. At the same time, by recycling carbon dioxide, it can also create new economic value, such as raw materials for the beverage industry, greenhouse agriculture, or synthetic chemicals, achieving a dual improvement in environmental and economic benefits. In addition, the modular design of the system makes it easy to maintain and upgrade, further reducing long-term operating costs and enhancing its competitiveness in the market.

[0050] It should be noted that the carbon dioxide absorption device and system of the present embodiment not only technically realize the optimization of gas-liquid separation and liquid distribution, but also show wide adaptability and significant environmental benefits in practical applications. By finely controlling the airflow and liquid flow inside the absorption tower 10, the capture efficiency of carbon dioxide can be significantly improved, while reducing energy consumption and operating costs, providing strong technical support for carbon dioxide emission reduction in industrial production. In addition, the design flexibility of the carbon dioxide absorption device of the present embodiment is high, and it can be adjusted according to different application scenarios and needs, such as being used in the laboratory to study the carbon dioxide absorption mechanism, or in large-scale industrial facilities for large-scale carbon dioxide capture, showing its dual value in scientific research and actual production. In short, the carbon dioxide absorption device and system of the present application provide innovative and practical technical solutions for achieving global carbon neutrality goals, reducing greenhouse gas emissions, and protecting the earth's environment.

[0051] Moreover, the carbon dioxide absorption device and system of this embodiment not only have significant technical advantages, but also have a positive impact on the social and economic levels. It can adapt to a variety of operating conditions, from detailed research in the laboratory to large-scale application in industrial sites, showing strong adaptability and a wide range of applications. In scientific research, the device can be used as an experimental platform for studying new materials and methods for carbon dioxide capture, accelerating the transformation of scientific research results; in actual production, it can help enterprises and industries achieve emission reduction targets, reduce the impact on the environment, while reducing production costs and improving overall economic benefits. This technological innovation is not only in line with the current trend of global sustainable development, but also provides a powerful tool for achieving carbon neutrality goals and building a green economic system. With the continuous advancement of technology and the expansion of applications, it is expected that the carbon dioxide absorption device and system of this embodiment will play a more important role in the future and contribute to building a cleaner, greener and more sustainable world.

[0052] Specifically, the carbon dioxide absorption device and system of this embodiment can effectively separate the gas-liquid two phases and improve the absorption efficiency by setting the phase separation structure 30 inside the absorption tower 10. At the same time, the liquid distribution is more uniform through the setting of the distributor 50, which further enhances the absorption effect of carbon dioxide. In addition, by controlling the width change of the blocking member 52, the airflow distribution can be optimized, the airflow short circuit can be reduced, and the overall operation stability and absorption capacity of the device can be improved. This design is not only suitable for large-scale industrial production, but also for small laboratory equipment. It has wide applicability and significant environmental benefits, and provides an effective technical means for reducing greenhouse gas emissions and achieving carbon neutrality goals.

[0053] 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.

[0054] 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.

[0055] 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.

[0056] 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 carbon dioxide absorption device, characterized in that: include: Absorption tower (10); An air inlet (21) is arranged at the bottom of the absorption tower (10); An air outlet (22) is arranged at the top of the absorption tower (10); A liquid inlet (23) is arranged at the top of the absorption tower (10) and below the gas outlet (22); A liquid outlet (24) is arranged at the bottom of the absorption tower (10) and located above the air inlet (21); A phase separation structure (30) is arranged inside the absorption tower (10), and the phase separation structure (30) has a plurality of collection tanks (31) arranged at intervals; A discharge port (40) is arranged on the side wall of the absorption tower (10) and is arranged corresponding to the phase separation structure (30).

2. The carbon dioxide absorption device according to claim 1, characterized in that: The phase separation structure (30) further comprises a first separation plate (32) and a plurality of second separation plates (33) arranged on the first separation plate (32), wherein one collection tank (31) is formed between two adjacent second separation plates (33).

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

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

5. The carbon dioxide absorption device according to claim 2, characterized in that: A plurality of through holes (321) are arranged in an array on the first partition plate (32).

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

7. The carbon dioxide absorption device according to claim 1, characterized in that: The carbon dioxide absorption device further comprises a distributor (50), wherein the distributor (50) is arranged inside the absorption tower (10) and below the phase separation structure (30).

8. The carbon dioxide absorption device according to claim 7, characterized in that: The distributor (50) comprises a plurality of third partition plates (51) arranged at intervals and a plurality of blocking members (52), wherein the plurality of blocking members (52) are arranged in one-to-one correspondence with the plurality of third partition plates (51), and the blocking members (52) are arranged on the top of the corresponding third partition plates (51).

9. The carbon dioxide absorption device according to claim 8, characterized in that: The width of the blocking member (52) gradually increases in a direction from the top of the absorption tower (10) to the bottom of the absorption tower (10).

10. 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 9.

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