Carbon dioxide adsorption module

Abstract

The invention provides a carbon dioxide adsorption module, which can be applied to a flue gas treatment system capable of producing carbon dioxide, such as flue gas of an industrial process or waste gas of a fuel decomposition production process and the like, and comprises a body and a gas-liquid separation membrane, the body is provided with at least one gas inlet structure and at least one gas outlet structure, the gas inlet structure is used for leading in flue gas, and the gas outlet structure is used for leading out the flue gas; the gas-liquid separation membrane can be mounted in the body and is provided with at least one liquid cavity, the outside of the gas-liquid separation membrane can be in contact with flue gas, and the gas-liquid separation membrane allows gas to pass through but can block liquid, so that the liquid in the liquid cavity cannot permeate to the outside, and therefore, by means of the characteristics of the gas-liquid separation membrane, the flue gas can be separated from the gas-liquid separation membrane. The smoke can flow to the liquid chamber from the outside and can react with the liquid in the liquid chamber, so that carbon dioxide in the smoke is captured and adsorbed by the liquid in the liquid chamber.

Description

Technical Field

[0001] This invention relates to the field of carbon dioxide flue gas treatment systems, and in particular to a carbon dioxide adsorption module. Background Technology

[0002] As one of the main greenhouse gases, carbon dioxide directly affects the regional greenhouse effect. Therefore, carbon dioxide capture and utilization (CCU) has become a key technology. It can not only reduce industrial emissions, but also provide new ways to utilize carbon dioxide, such as converting carbon dioxide into fuels, chemical feedstocks, or using it to enhance oil and gas extraction.

[0003] However, current carbon dioxide capture technologies still face many challenges and shortcomings, mainly including high energy consumption and high cost during the capture process, and the fact that some equipment is bulky and difficult to install in various application scenarios and environments. Therefore, how to improve and develop carbon dioxide capture equipment, especially to capture carbon dioxide in flue gas emissions, in order to improve the efficiency of subsequent reuse, and thus help the world achieve the goal of low-carbon transformation, is an important topic of this invention. Summary of the Invention

[0004] In view of the shortcomings of the prior art described above, the purpose of this invention is to provide a carbon dioxide adsorption module to solve the problem of how to improve the capture efficiency of carbon dioxide in flue gas in the prior art.

[0005] To achieve the above and other related objectives, the present invention provides a carbon dioxide adsorption module, applied in a flue gas treatment system that can produce carbon dioxide, characterized in that it comprises: a body having at least one air inlet structure and at least one air outlet structure thereon, the air inlet structure being used to introduce flue gas, and the air outlet structure being used to discharge flue gas; a gas-liquid separation membrane installed in the body, having at least one liquid chamber, and the outside of the gas-liquid separation membrane being able to contact the flue gas, the gas-liquid separation membrane allowing gas to pass through while blocking liquid from passing through the gas-liquid separation membrane, so that the liquid in the liquid chamber cannot permeate to the outside.

[0006] By adopting the above technical solution, the characteristics of the gas-liquid separation membrane enable the flue gas to flow from the outside of the gas-liquid separation membrane to the liquid chamber, and react with the liquid in the liquid chamber, thereby capturing and adsorbing the carbon dioxide in the flue gas.

[0007] In one embodiment of the present invention, a liquid chemical adsorbent is further included, which is contained in a liquid chamber and can adsorb carbon dioxide in the flue gas passing through the gas-liquid separation membrane.

[0008] In one embodiment of the present invention, the liquid chemical adsorbent is an amine compound or a carbonate-based adsorbent.

[0009] In one embodiment of the present invention, the surface pore size of the gas-liquid separation membrane is 20 nanometers to 100 nanometers, and the inner pore size is 300 nanometers to 700 nanometers.

[0010] In one embodiment of the present invention, the material of the gas-liquid separation membrane includes at least one of polyvinylidene fluoride, polyethersulfone, polypropylene, polyethylene, polysulfone, polyacrylonitrile, and polyvinyl chloride.

[0011] In one embodiment of the present invention, the gas-liquid separation membrane can withstand a temperature of 70°C and can withstand acidic, neutral or alkaline liquids in the pH range of 2 to 13.

[0012] In one embodiment of the present invention, the main body includes: an outer cover having a first gas channel and a second gas channel; a top cover having a plurality of first top air holes, each of which is connected to a first gas channel; a bottom cover; a plurality of hollow ventilation columns, each of which is fixedly connected to the top cover and the bottom cover at both ends, and adjacent hollow ventilation columns are spaced apart by gaps, each gap being connected to a second gas channel; each hollow ventilation column has a gas chamber, which is connected to a corresponding first top air hole; at least one side of each hollow ventilation column has at least one gas outlet, and each gas outlet is connected to a corresponding gas chamber and each gap; the first gas channel, the first top air hole, the gas chamber, the gas outlet, the gap, and the second gas channel constitute the air intake structure and the air outlet structure, allowing gas to flow in the air intake structure and the air outlet structure.

[0013] In one embodiment of the present invention, the outer cover is further provided with a first liquid channel and a second liquid channel, and the top end is further provided with a plurality of first infusion holes, each of the first infusion holes being connected to the first liquid channel and the corresponding liquid chamber. The bottom end cover is further provided with a plurality of second infusion holes, each of the second infusion holes being connected to the second liquid channel and the corresponding liquid chamber, so that the liquid chemical adsorbent can flow between the first liquid channel, the first infusion hole, the liquid chamber, the second infusion hole and the second liquid channel.

[0014] In one embodiment of the present invention, the main body is box-shaped and has a gas chamber inside, which can accommodate the gas-liquid separation membrane. The gas inlet structure is provided on one side of the main body for introducing flue gas into the gas chamber, and the gas outlet structure is provided on the other side of the main body for discharging flue gas out of the main body.

[0015] In one embodiment of the present invention, a plurality of gas-liquid separation membranes are respectively hollow tubular, with their top ends connected to a first infusion tube and their bottom ends connected to a second infusion tube, for forming a set of gas-liquid separation modules, and the liquid chemical adsorbent can flow in the first infusion tube, each liquid chamber of each gas-liquid separation membrane and the second infusion tube.

[0016] As described above, the carbon dioxide adsorption module of the present invention has the following beneficial effects: The present invention uses a gas-liquid separation membrane, which can contain a liquid chemical adsorbent and its outer surface can contact the flue gas, thereby allowing the carbon dioxide in the flue gas to be adsorbed by the liquid chemical adsorbent. Through the carbon dioxide adsorption module, the carbon dioxide in the flue gas can be quickly and effectively adsorbed to reduce the carbon dioxide concentration in the exhaust gas, which helps to mitigate the adverse environmental impact of industrial emissions and meets low-carbon emission and environmental standards. In particular, the hollow fiber structure of the gas-liquid separation membrane can provide a large surface area with a small volume, thereby increasing the gas-liquid contact area. In actual tests, only a small amount of liquid chemical adsorbent is required. In addition, during the aforementioned adsorption process, there is no need to heat or pressurize the liquid chemical adsorbent or the gas-liquid separation membrane, which reduces the energy demand of the flue gas treatment system. Based on the modular design of this carbon dioxide adsorption module, it is more applicable to various types of flue gas treatment systems and is easy to maintain and replace its internal components, greatly improving the convenience of use. Attached Figure Description

[0017] Figure 1 The diagram shown is an exploded view of the carbon dioxide module in Embodiment 1 of the present invention, with the outer casing omitted.

[0018] Figure 2 The diagram shown is a cross-sectional perspective view of the carbon dioxide module in Embodiment 1 of the present invention, with the outer casing omitted.

[0019] Figure 3 The diagram shown is a perspective view of the carbon dioxide module in Embodiment 1 of the present invention, with the gas-liquid separation membrane and outer casing omitted.

[0020] Figure 4 The diagram shown is a side view of the carbon dioxide module in Embodiment 1 of the present invention.

[0021] Figure 5 The diagram shown is a schematic diagram of the carbon dioxide module in Embodiment 2 of the present invention;

[0022] Figure 6 The diagram shown is a schematic diagram of the gas-liquid separation module in Embodiment 2 of the present invention;

[0023] Component designation explanation

[0024] 1. Main body (Example 1); 3. Main body (Example 2)

[0025] 11. Top cap; 111. First top vent; 112. First infusion port;

[0026] 12. Bottom cap; 121. Second infusion port;

[0027] 13. Hollow ventilation column; 130. Gas chamber (Example 1); 30. Gas chamber (Example 2); 132. Gas outlet;

[0028] 14. Outer casing; 141. First gas passage; 142. Second gas passage; 143. First liquid passage; 144. Second liquid passage;

[0029] 2. Gas-liquid separation membrane (Example 1); 4. Gas-liquid separation membrane (Example 2);

[0030] 20. Liquid chamber;

[0031] 31. Air intake passage; 32. Air exhaust passage;

[0032] 4' Gas-liquid separation module;

[0033] 41. First infusion tubing; 42. Second infusion tubing;

[0034] C1, Carbon dioxide adsorption module (Example 1); C2, Carbon dioxide adsorption module (Example 2);

[0035] G1, gap (Example 1); G2, gap (Example 2). Detailed Implementation

[0036] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0037] Please see Figures 1 to 6 It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding and reading. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention's implementation.

[0038] Example 1:

[0039] This invention provides a carbon dioxide adsorption module suitable for smoke treatment systems that produce carbon dioxide, which can adsorb carbon dioxide from flue gas (such as flue gas from industrial processes or waste gas from fuel decomposition processes).

[0040] Please see Figures 1 to 4 As shown, the carbon dioxide adsorption module C1 includes a body 1 and a gas-liquid separation membrane 2. The body 1 is provided with at least one air inlet structure and at least one air outlet structure. The air inlet structure is used to introduce flue gas, and the air outlet structure is used to discharge flue gas.

[0041] The gas-liquid separation membrane 2 is provided with at least one liquid chamber 20, which can contain a liquid chemical adsorbent. Specifically, in some embodiments, the gas-liquid separation membrane 2 may be composed of multiple hollow fiber membrane filaments, each of which forms a liquid chamber 20 for the flow of liquid chemical adsorbent; or, in further embodiments, the gas-liquid separation membrane 2 may be designed as a surrounding hollow structure, forming a clearly defined liquid chamber 20. In other words, regardless of the specific structure of the gas-liquid separation membrane 2, as long as the gas structure contains a liquid chamber 20 and can be used to contain a liquid chemical adsorbent, it falls within the technical scope of this invention.

[0042] Please see Figures 1 to 4 As shown, liquid chemical adsorbents can effectively adsorb carbon dioxide from flue gas. Specifically, liquid chemical adsorbents include, but are not limited to, amine compounds, such as monoethanolamine (MEA), diethanolamine (DEA), or triethanolamine (TEA); or carbonate-based adsorbents based on sodium carbonate (Na2CO3) and potassium carbonate (K2CO3) solutions. In other words, any chemical composition capable of adsorbing carbon dioxide falls within the scope of the liquid chemical adsorbents described in this invention. Depending on actual needs, in some embodiments, the liquid chemical adsorbent can be quantitatively disposed in the carbon dioxide adsorption module C1; in other embodiments, the liquid chemical adsorbent can flow and rotate within the carbon dioxide adsorption module C1 to maintain the continuous adsorption capacity of carbon dioxide.

[0043] For an explanation of one architecture of the carbon dioxide adsorption module C1, please refer to [link / reference needed]. Figures 1 to 4As shown, in Embodiment 1, the main body 1 includes a top cover 11, a bottom cover 12, a plurality of hollow ventilation columns 13 and an outer cover 14. The top cover 11 is provided with a plurality of first top air holes 111 and a plurality of first infusion holes 112, and the first top air holes 111 are arranged around the periphery of the first infusion holes 112 (but not limited thereto). The bottom cover 12 is provided with a plurality of second infusion holes 121. The two ends of each hollow vent column 13 are respectively assembled to the top cover 11 and the bottom cover 12, and adjacent hollow vent columns 13 are separated by a gap G1. A gas chamber 130 is provided inside the hollow vent column 13, and at least one gas outlet 132 is provided on at least one side. The top of the gas chamber 130 can be connected to the first top air hole 111, and the bottom of the gas chamber 130 is closed due to the bottom cover 12. The gas outlet 132 can connect the gas chamber 130 through the gap G1.

[0044] Please see Figures 1 to 4 As shown, the outer cover 14 can accommodate the top cover 11, the bottom cover 12, and each of the hollow vent columns 13. To facilitate the demonstration of the position and connection relationship of each component, Figure 4 The outer cover 14 is shown as an imaginary line. However, those skilled in the art should understand that the outer cover 14 can be designed and modified according to actual needs without affecting the technical features of the present invention. In other words, any outer cover structure that can achieve the gas flow function described later is within the scope of the present invention. The outer cover 14 is provided with a first gas channel 141, a second gas channel 142, a first liquid channel 143, and a second liquid channel 144. The first channel 141 can communicate with each of the first top air holes 111, the second channel 142 can communicate with each of the gaps G1, the first liquid channel 143 can communicate with each of the first liquid inlet holes 112, and the second liquid channel 144 can communicate with each of the second liquid inlet holes 121. In this way, gas can flow between the first top air holes 111, the gas chamber 130, the gas outlet 132, the gaps G1, the first gas channel 141, and the second gas channel 142, and liquid can flow between the first liquid inlet holes 112, the second liquid inlet holes 121, the first liquid channel 143, and the second liquid channel 144.

[0045] Furthermore, the gas-liquid separation membrane 2 can be installed between the top cap 11 and the bottom cap 12, corresponding to each of the first liquid inlet 112 and the second liquid inlet 121. The liquid chamber 20 of the gas-liquid separation membrane 2 can be connected to the first liquid inlet 112 and the second liquid inlet 121 respectively, allowing the liquid chemical adsorbent to flow in and out of the liquid chamber 20. The exterior of the gas-liquid separation membrane 2 can contact the flue gas and allows gas to pass through, but it blocks the liquid, preventing the liquid (such as the "liquid chemical adsorbent") in the liquid chamber 20 from permeating to the outside. Specifically, the gas-liquid separation membrane 2 is provided with different pore sizes and channels. The pore size of its surface layer can be 20 nanometers to 100 nanometers (50 nanometers in Example 1), and the pore size of its inner layer can be 300 nanometers to 700 nanometers. The aforementioned structure provides a larger contact area to improve gas-liquid separation efficiency, and the pore size gradually increases from 20 nanometers to 100 nanometers on the surface to 300 nanometers to 700 nanometers on the inner side, forming a graded pore structure. This effectively blocks liquid molecules while allowing gas to pass through, thus achieving better gas-liquid separation results. It should be noted that the term "[outer part of the gas-liquid separation membrane 2]" refers to the area that is not in contact with the liquid chemisorbent but can directly contact the flue gas.

[0046] Please refer to the above. Figures 1 to 3 As shown, the gas-liquid separation membrane 2 can be made of materials such as polyvinylidene fluoride (PVDF), polyether sulfone (PES), polypropylene (PP), polyethylene (PE), polysulfone (PSF or PSU), polyacrylonitrile (PAN), or polyvinyl chloride (PVC), but is not limited to these materials; any material that meets the aforementioned gas-liquid separation characteristics is acceptable. Furthermore, the gas-liquid separation membrane 2 has high-temperature resistance, capable of withstanding temperatures up to 70°C, and also possesses acid and alkali resistance, able to withstand acidic, neutral, or alkaline liquids within the pH range of 2 to 13. Therefore, the gas-liquid separation membrane 2 can still maintain good gas-liquid separation performance in environments using flue gas and liquid chemical adsorbents.

[0047] Please see Figures 1 to 4As shown, the flow path of the flue gas and the liquid chemical adsorbent is further explained as follows: First, the liquid chemical adsorbent flows in through the second liquid channel 144 and sequentially passes through the second inlet 121, the liquid chamber 20, and the first inlet 112 before flowing out through the first liquid channel 143. When flue gas with a high concentration of carbon dioxide flows sequentially through the first channel 141 of the outer cover into the first top gas hole 111 and the gas chamber 130, it can flow out of the gas chamber 130 through each gas outlet 132. Then, the flue gas can come into contact with the gas-liquid separation membrane 2. At this time, since the carbon dioxide concentration in the flue gas is higher than the carbon dioxide concentration in the liquid chemical adsorbent, carbon dioxide molecules will spontaneously diffuse from the outside of the high-concentration gas-liquid separation membrane 2 to the inside of the low-concentration gas-liquid separation membrane 2 and react chemically with the liquid chemical adsorbent, thereby removing carbon dioxide from the gas phase and retaining it in the liquid phase, thus achieving the adsorption effect. When at least some of the carbon dioxide in the flue gas is adsorbed by the liquid chemical adsorbent, a low-concentration carbon dioxide flue gas is formed. This flue gas flows out of the outer casing 14 sequentially through the gaps G1 and the second channel 142. In the aforementioned architecture, the first channel 141 and the first top air hole 111 can be considered as the air inlet structure of the main body 1, and the second channel 142 and the gap G1 can be considered as the air outlet structure of the main body 1. Depending on the actual needs of the product, when the paths for introducing and venting the flue gas change, the aforementioned air inlet and outlet structures can be interchanged. Furthermore, in one embodiment, the flow direction of the flue gas is opposite to the flow direction of the liquid chemical adsorbent to maintain a stable concentration difference between the inside and outside of the gas-liquid separation membrane 2, thereby improving adsorption efficiency, but this is not a limitation.

[0048] Example 2;

[0049] The carbon dioxide adsorption module provided in this embodiment differs from that in Embodiment 1 in that it can be applied to situations requiring large-scale carbon dioxide adsorption, such as industrial flue gas, and the type of the module and the gas-liquid separation membrane can be adjusted. For Embodiment 2 of the present invention, please refer to... Figure 5 As shown, the carbon dioxide adsorption module C2 includes a body 3 and a gas-liquid separation membrane 4. The body 3 can be box-shaped and has a gas chamber 30 inside. An air inlet channel 31 (equivalent to an air inlet structure) is provided on one side, and an air outlet channel 32 (equivalent to an air outlet structure) is provided on the other side. Flue gas can be introduced into the gas chamber 30 through the air inlet channel 31 and discharged to the outside of the body 3 through the air outlet channel 32.

[0050] also, Figure 6 4. A proper visual inspection of the gas-liquid separation membrane is required. Figure 5A side view of the gas-liquid separation membrane 4 is shown. In Embodiment 2, the gas-liquid separation membrane 4 is provided with a liquid chamber (which can refer to the form of Embodiment 1, but is not limited thereto) to accommodate the liquid chemical adsorbent. The top end of the gas-liquid separation membrane 4 can be connected to the first infusion tube 41, and the bottom end of the gas-liquid separation membrane 4 can be connected to the second infusion tube 42. The liquid chemical adsorbent can flow into the liquid chamber of the gas-liquid separation membrane 4 through the second infusion tube 42, and then flow through the first infusion tube 41, but is not limited thereto. In some embodiments, one or more gas-liquid separation membranes 4 can be connected to the same first infusion tube 41 and the same infusion tube 42. In the structure of multiple gas-liquid separation membranes 4, adjacent gas-liquid separation membranes 4 can be provided with a gap G2, so that flue gas can pass through the aforementioned gap G2.

[0051] Please refer to the above. Figure 5 and Figure 6 As shown, Figure 6 The structure of multiple gas-liquid separation membranes 4 is referred to as [a set of gas-liquid separation modules 4']. One or more sets of gas-liquid separation modules 4' can be provided within the main body 3. In the case of multiple sets of gas-liquid separation modules 4', these gas-liquid separation modules 4' can be... Figure 4 The components are arranged alternately from left to right (but not limited to this). When flue gas flows into the main body 3, it can flow through multiple gas-liquid separation modules 4', allowing the carbon dioxide in the flue gas to be adsorbed by the liquid chemical adsorbent in the gas-liquid separation membrane 4', and finally flow out of the main body 3 (e.g., ...). Figure 4 (The solid arrow above indicates the gas flow path), therefore, the carbon dioxide concentration of the flue gas flowing out of the body 1 will be lower than the carbon dioxide concentration of the flue gas flowing into the body 1. In Embodiment 2, the first liquid delivery pipe 41 or the second liquid delivery pipe 42 between adjacent gas-liquid separation modules 4' can be connected, so that the liquid chemical adsorbent can flow through each gas-liquid separation membrane module 4', such as... Figure 4 The hypothetical liquid flow path is shown, but is not limited to it. In some embodiments, each gas-liquid separation module 4' can use the liquid chemisorbent independently without flowing between them.

[0052] In summary, please refer to Figures 1 to 6As shown, carbon dioxide adsorption modules C1 and C2 can rapidly and effectively adsorb carbon dioxide from flue gas, reducing the concentration of carbon dioxide in the emitted flue gas and helping to mitigate the adverse environmental impact of industrial emissions, thus meeting low-carbon emission and environmental standards. The hollow fiber structure of the gas-liquid separation membranes 2 and 4 allows for a large surface area within a small volume, thereby increasing the gas-liquid contact area. Therefore, in actual testing, only a small amount of liquid chemical adsorbent (such as "alkanolamine") is needed; for example, only 3 liters of alkanolamine solution are required for a surface area of ​​50 square meters to achieve rapid and efficient carbon dioxide adsorption. Furthermore, the aforementioned adsorption process does not require additional heating or pressurization of the liquid chemical adsorbent or gas-liquid separation membranes 2 and 4, reducing the energy demand of the flue gas treatment system. Based on the modular design of these carbon dioxide adsorption modules C1 and C2, they are more applicable to various types of flue gas treatment systems and facilitate maintenance and replacement of internal components, significantly improving ease of use.

[0053] Therefore, this invention effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0054] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A carbon dioxide adsorption module, applied in a flue gas treatment system that produces carbon dioxide, characterized in that, include: The body has at least one air inlet structure and at least one air outlet structure, wherein the air inlet structure is used to introduce flue gas and the air outlet structure is used to discharge flue gas. A gas-liquid separation membrane is installed in the body and has at least one liquid chamber. The outside of the gas-liquid separation membrane can contact the flue gas. The gas-liquid separation membrane allows gas to pass through and blocks liquid from passing through the gas-liquid separation membrane, so that the liquid in the liquid chamber cannot permeate to the outside.

2. The carbon dioxide adsorption module according to claim 1, characterized in that: It also includes a liquid chemical adsorbent, which is contained in a liquid chamber and can adsorb carbon dioxide in the flue gas passing through the gas-liquid separation membrane.

3. The carbon dioxide adsorption module according to claim 2, characterized in that: The liquid chemical adsorbent is an amine compound or a carbonate-based adsorbent.

4. The carbon dioxide adsorption module according to claim 2, characterized in that: The surface pore size of the gas-liquid separation membrane is 20 nanometers to 100 nanometers, and the inner pore size is 300 nanometers to 700 nanometers.

5. The carbon dioxide adsorption module according to claim 4, characterized in that: The gas-liquid separation membrane is made of at least one of polyvinylidene fluoride, polyethersulfone, polypropylene, polyethylene, polysulfone, polyacrylonitrile, and polyvinyl chloride.

6. The carbon dioxide adsorption module according to claim 5, characterized in that: The gas-liquid separation membrane can withstand a temperature of 70°C and can withstand acidic, neutral or alkaline liquids in the pH range of 2 to 13.

7. The carbon dioxide adsorption module according to any one of claims 2-6, characterized in that: The body includes: The outer casing is provided with a first gas passage and a second gas passage; The top cover is provided with multiple first top air holes, each of which is connected to the first gas channel. Bottom cap; Multiple hollow ventilation columns are provided, with a top cap and a bottom cap fixedly connected to both ends of each hollow ventilation column. Each adjacent hollow ventilation column is separated by a gap, and each gap is connected to a second gas channel. Each hollow ventilation column is provided with a gas chamber, which is connected to a corresponding first top air hole. At least one side of each hollow ventilation column is provided with at least one gas outlet, and each gas outlet is connected to the corresponding gas chamber and each gap. The first gas channel, the first top gas hole, the gas chamber, the gas outlet, the gap, and the second gas channel constitute the air intake structure and the air outlet structure, allowing gas to flow in the air intake structure and the air outlet structure.

8. The carbon dioxide adsorption module according to claim 7, characterized in that: The outer cover is also provided with a first liquid channel and a second liquid channel. The top end is also provided with a plurality of first infusion holes, each of which is connected to the first liquid channel and the corresponding liquid chamber. The bottom end cover is also provided with a plurality of second infusion holes, each of which is connected to the second liquid channel and the corresponding liquid chamber, so that the liquid chemical adsorbent can flow between the first liquid channel, the first infusion hole, the liquid chamber, the second infusion hole, and the second liquid channel.

9. The carbon dioxide adsorption module according to any one of claims 2-6, characterized in that: The main body is box-shaped and has a gas chamber inside, which can accommodate the gas-liquid separation membrane. The gas inlet structure is provided on one side of the main body for introducing flue gas into the gas chamber, and the gas outlet structure is provided on the other side of the main body for discharging flue gas out of the main body.

10. The carbon dioxide adsorption module according to claim 9, characterized in that: Multiple gas-liquid separation membranes are hollow tubular in shape, with their top ends connected to the first infusion tube and their bottom ends connected to the second infusion tube, forming a set of gas-liquid separation modules. Liquid chemical adsorbent can flow in the first infusion tube, each liquid chamber of each gas-liquid separation membrane, and the second infusion tube.

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