Trapping device

Abstract

The invention provides a trapping device. According to the trapping device, a shell is provided with a trapping cavity, an air inlet and an air outlet, the air inlet is communicated with the air outlet through the trapping cavity, and the air inlet is located below the air outlet; the spraying device is arranged in the trapping cavity and is used for spraying absorption liquid for absorbing gas to be trapped into the trapping cavity; the cooling structure is provided with a liquid inlet, a liquid outlet and a circulation cavity, the liquid inlet is communicated with the liquid outlet through the circulation cavity, the circulation cavity is used for allowing a cooling medium to flow, the cooling structure is spirally arranged, a cooling channel is formed between any circle of the cooling structure and the adjacent circle of the cooling structure in a surrounding mode, and the cooling channel is communicated with the trapping cavity; the cooling structure is used for cooling gas flowing through the cooling channel; wherein the multiple cooling structures are arranged at intervals in the height direction of the shell, and the spraying device is located above at least one cooling structure. The absorption tower provided by the invention effectively solves the problem of low capture rate of an absorption tower for capturing carbon dioxide in the prior art.

Description

Technical Field

[0001] The present invention relates to the technical field of carbon dioxide capture, and in particular to a capture device. Background Art

[0002] At present, as an emerging technology developed in recent years, carbon dioxide capture technology can be used to remove carbon dioxide from industrial exhaust gas to reduce carbon emissions in industrial production processes. The absorption tower is one of the core equipment for achieving carbon dioxide capture. The absorption tower is filled with an absorption liquid for capturing carbon dioxide. The absorption liquid contacts the flue gas introduced into the absorption tower to absorb and capture carbon dioxide in the flue gas. In the prior art, the absorption liquid is mainly an organic amine liquid.

[0003] However, the process of organic amine liquid absorbing carbon dioxide is an exothermic reaction. The heat generated by the reaction will be transferred to the organic amine liquid, and the high-temperature flue gas will also transfer heat to the organic amine liquid, causing the temperature of the organic amine liquid to rise sharply in the process of absorbing carbon dioxide. The chemical reaction of organic amine liquid absorbing carbon dioxide is actually a reversible reaction. As the temperature of the organic amine liquid continues to rise, the reaction of the organic amine liquid absorbing carbon dioxide will eventually reverse, and the captured carbon dioxide will be released back into the flue gas, especially for the spray tower (the organic amine liquid is sprayed into the absorption tower in the form of mist). The temperature rise rate of the mist organic amine liquid is relatively fast, and it will rise with the flue gas. A large amount of carbon dioxide will be released back into the flue gas, which leads to a very low carbon dioxide capture rate in the absorption tower. Summary of the invention

[0004] The main purpose of the present invention is to provide a capture device to solve the problem of low capture rate of the absorption tower used for capturing carbon dioxide in the prior art.

[0005] In order to achieve the above-mentioned purpose, the present invention provides a capture device, comprising: a shell, having a capture chamber, an air inlet and an air outlet, the air inlet is connected with the air outlet through the capture chamber, and the air inlet is located below the air outlet; a spray device, arranged in the capture chamber, the spray device is used to spray an absorption liquid for absorbing the gas to be captured into the capture chamber; a cooling structure, having a liquid inlet, a liquid outlet and a circulation chamber, the liquid inlet is connected with the liquid outlet through the circulation chamber, the circulation chamber is used to supply a cooling medium to flow, the cooling structure is arranged in a spiral shape, and a cooling channel is formed between any circle of the cooling structure and an adjacent circle, the cooling channel is connected with the capture chamber, and the cooling structure is used to cool the gas flowing through the cooling channel; wherein, there are multiple cooling structures, and the multiple cooling structures are arranged at intervals along the height direction of the shell, and the spray device is located above at least one cooling structure.

[0006] Furthermore, the cooling structure includes a plurality of interconnected tubular components, and the plurality of tubular components are arranged in a spiral shape; wherein each tubular component includes a bending section and a straight section that are interconnected, and the straight section extends along the height direction of the shell, and in two adjacent tubular components, the straight section of one tubular component is connected to the bending section of the other tubular component.

[0007] Furthermore, the capture device also includes: a partition structure, which is arranged in the shell and has a through hole, and the partition structure divides the inner cavity of the shell into a capture cavity and a cooling cavity; a connecting structure, at least part of the connecting structure is passed through the through hole, and the capture cavity is connected with the cooling cavity through the connecting structure; wherein cooling structures are provided in both the cooling cavity and the capture cavity, the air inlet is connected with the cooling cavity, and the liquid outlet is connected with the capture cavity.

[0008] Furthermore, the partition structure is an arc-shaped plate, which protrudes toward the side away from the spray device so that a guide surface is formed on the plate surface of the partition structure facing the spray device; wherein the partition structure also has a liquid outlet hole, and the guide surface is used to guide the absorption liquid flowing onto the partition structure to the liquid outlet hole, and the liquid outlet hole is connected to the spray device through an absorption liquid circulation component.

[0009] Furthermore, the absorption liquid circulation component includes: a pipeline, the liquid outlet is connected to the spray device through the pipeline; a cache device, which is arranged on the pipeline, and the cache cavity of the cache device is used to cache the absorption liquid; a pump body device, which is arranged on the pipeline, and the pump body device is used to drive the absorption liquid in the pipeline to flow; wherein, there are at least two pump body devices, at least one pump body device is located on the liquid inlet side of the cache device, and at least another pump body device is located on the liquid outlet side of the cache device.

[0010] Furthermore, the connecting structure is tubular and includes a first pipe segment, a second pipe segment and a third pipe segment that are interconnected, the second pipe segment is located between the first pipe segment and the third pipe segment, the first pipe segment is inserted in the through hole, the second pipe segment and the third pipe segment are located in the capture chamber, the gas flows out through the third pipe segment away from one end of the second pipe segment, and the third pipe segment is set at an angle A with the height direction of the shell, and the angle A satisfies: 90°<A≤180°; wherein, there are multiple through holes, there are multiple connecting structures, the multiple through holes are arranged at intervals around the liquid outlet, and the multiple connecting structures are arranged one-to-one with the multiple through holes.

[0011] Furthermore, there are multiple spray devices, and the multiple spray devices are arranged at intervals along the height direction of the shell, and at least one cooling structure is arranged between two adjacent spray devices.

[0012] Furthermore, the cooling structure is in a plate shape, and a cooling channel is formed between the plate surface of any circle of the cooling structure and the plate surface of an adjacent circle thereof.

[0013] Furthermore, the capture device also includes: a receiving groove, which is arranged on the bottom wall of the cooling chamber, and the receiving groove is used to receive condensed water.

[0014] Furthermore, the capture device also includes: a temperature detection device, which is arranged in the capture chamber and is used to detect the temperature in the capture chamber; a control valve, which is arranged at the air inlet; and a control module, which is connected to both the control valve and the temperature detection device, and the control module controls the opening of the control valve according to the detection value of the temperature detection device.

[0015] According to the technical solution of the present invention, the shell of the capture device has a capture chamber, an air inlet and an air outlet, the air inlet is connected to the air outlet through the capture chamber, the air inlet is located below the air outlet, the spray device is arranged in the capture chamber and is used to spray the absorption liquid used to absorb the gas to be captured into the capture chamber, the cooling structure has a liquid inlet, a liquid outlet and a flow chamber, the liquid inlet is connected to the liquid outlet through the flow chamber, the flow chamber is used to supply the cooling medium to flow, the cooling structure is arranged in a spiral shape, and a cooling channel is formed around any circle of the cooling structure and an adjacent circle, the cooling channel is connected to the capture chamber, and the cooling structure is used to cool the gas flowing through the cooling channel. There are multiple cooling structures, and the multiple cooling structures are arranged at intervals along the height direction of the shell, and the spray device is located above at least one cooling structure. In this way, after the high-temperature flue gas passes into the capture chamber through the air inlet, it can spontaneously flow to the air outlet, and in the flow process, since the spray device is located above at least one cooling structure, the flue gas can be cooled by the cooling structure and then react with the absorption liquid sprayed by the spray device. At the same time, the spirally arranged cooling structure enables the cooling structure to have a sufficiently large cooling area (cooling channel) in the limited volume of the capture chamber, so as to maximize the cooling effect of the cooling structure, avoid the phenomenon of reverse reaction between carbon dioxide and the absorption liquid caused by excessively high flue gas temperature, and thus solve the problem of low capture rate of the absorption tower used for capturing carbon dioxide in the prior art. 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 It shows a schematic diagram of the overall structure of an embodiment of a capture device according to the present invention;

[0018] Figure 2 Shows Figure 1 A schematic diagram of a three-dimensional structure of a cooling structure of a capture device;

[0019] Figure 3 Shows Figure 2 Top view of the cooling structure in FIG.

[0020] The above drawings include the following reference numerals:

[0021] 10. Shell; 11. Capture chamber; 12. Air inlet; 13. Air outlet; 14. Cooling chamber;

[0022] 20. Spraying device;

[0023] 30. Cooling structure; 31. Liquid inlet; 32. Cooling channel; 33. Tubular component; 34. Bend section; 35. Straight section;

[0024] 40. partition structure; 41. flow guide surface; 42. liquid outlet;

[0025] 50. connecting structure; 51. first pipe section; 52. second pipe section; 53. third pipe section;

[0026] 60. Absorption liquid circulation assembly; 61. Pipeline; 62. Buffer device; 63. Pump device;

[0027] 70. Receiving tank;

[0028] 80. Control valve. DETAILED DESCRIPTION

[0029] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0030] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0031] In the present invention, unless otherwise specified, the directional words used, such as "up" and "down", usually refer to the directions shown in the drawings, or to the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above directional words are not used to limit the present invention.

[0032] In order to solve the problem of low capture rate of the absorption tower used for capturing carbon dioxide in the prior art, the present application provides a capture device.

[0033] like Figures 1 to 3As shown, the capture device includes a shell 10, a spray device 20 and a cooling structure 30. The shell 10 has a capture chamber 11, an air inlet 12 and an air outlet 13. The air inlet 12 is connected to the air outlet 13 through the capture chamber 11, and the air inlet 12 is located below the air outlet 13. The spray device 20 is arranged in the capture chamber 11, and the spray device 20 is used to spray the absorption liquid used to absorb the gas to be captured into the capture chamber 11. The cooling structure 30 has a liquid inlet 31, a liquid outlet and a circulation cavity. The liquid inlet 31 is connected to the liquid outlet through the circulation cavity. The circulation cavity is used to supply the cooling medium to flow. The cooling structure 30 is arranged in a spiral shape. A cooling channel 32 is formed around any circle of the cooling structure 30 and an adjacent circle. The cooling channel 32 is connected to the capture chamber 11, and the cooling structure 30 is used to cool the gas flowing through the cooling channel 32. There are multiple cooling structures 30 , which are arranged at intervals along the height direction of the shell 10 , and the spray device 20 is located above at least one cooling structure 30 .

[0034] The technical solution of this embodiment is applied. The housing 10 of the capture device has a capture chamber 11, an air inlet 12 and an air outlet 13. The air inlet 12 is connected to the air outlet 13 through the capture chamber 11. The air inlet 12 is located below the air outlet 13. The spray device 20 is arranged in the capture chamber 11 and is used to spray the absorption liquid used to absorb the gas to be captured into the capture chamber 11. The cooling structure 30 has a liquid inlet 31, a liquid outlet and a flow cavity. The liquid inlet 31 is connected to the liquid outlet through the flow cavity. The flow cavity is used to allow the cooling medium to flow. The cooling structure 30 is arranged in a spiral shape. A cooling channel 32 is formed between any circle of the cooling structure 30 and an adjacent circle. The cooling channel 32 is connected to the capture chamber 11. The cooling structure 30 is used to cool the gas flowing through the cooling channel 32. There are multiple cooling structures 30, and the multiple cooling structures 30 are arranged at intervals along the height direction of the housing 10. The spray device 20 is located above at least one cooling structure 30. In this way, after the high-temperature flue gas is introduced into the capture chamber 11 through the air inlet 12, it can spontaneously flow to the air outlet 13. During the flow process, since the spray device 20 is located above at least one cooling structure 30, the flue gas can be cooled by the cooling structure 30 and then react with the absorption liquid sprayed by the spray device 20. At the same time, the spirally arranged cooling structure 30 enables the cooling structure 30 to have a sufficiently large cooling area (cooling channel 32) in the capture chamber 11 with a limited volume, so as to maximize the cooling effect of the cooling structure 30, avoid the phenomenon of reverse reaction between carbon dioxide and the absorption liquid caused by excessively high flue gas temperature, and thus solve the problem of low capture rate of the absorption tower used for capturing carbon dioxide in the prior art.

[0035] In this embodiment, three cooling structures 30 are disposed in the collection chamber 11 to further enhance the cooling effect of the cooling structures 30 on the smoke.

[0036] It should be noted that the number of cooling structures 30 is not limited thereto, and can be adjusted according to working conditions and usage requirements. Optionally, the number of cooling structures 30 is two, four, five, six, seven, or more.

[0037] In this embodiment, the absorption liquid is an organic amine liquid.

[0038] In this embodiment, the cooling medium is a gas phase cooling medium to reduce the consumption of water resources and lower the water treatment and maintenance costs.

[0039] like Figure 2 and Figure 3 As shown, the cooling structure 30 includes a plurality of interconnected tubular components 33, and the plurality of tubular components 33 are arranged in a spiral shape. Each tubular component 33 includes a bending section 34 and a straight section 35 that are interconnected, and the straight section 35 extends along the height direction of the shell 10. In two adjacent tubular components 33, the straight section 35 of one tubular component 33 is connected to the bending section 34 of the other tubular component 33. In this way, the above arrangement not only makes the structure of the cooling structure 30 simpler, easier to process and realize, thereby reducing the processing difficulty of the staff and the processing cost of the cooling structure 30, but also makes the cooling structure 30 have a larger cooling area, thereby improving the cooling effect of the cooling structure 30.

[0040] In this embodiment, the cooling structure 30 is actually a coil formed by spirally forming a wavy tubular structure.

[0041] In this embodiment, the capture device further includes a partition structure 40 and a connecting structure 50. The partition structure 40 is arranged in the shell 10 and has a through hole. The partition structure 40 divides the inner cavity of the shell 10 into a capture chamber 11 and a cooling chamber 14. At least part of the connecting structure 50 is penetrated in the through hole, and the capture chamber 11 is connected with the cooling chamber 14 through the connecting structure 50. Among them, the cooling chamber 14 and the capture chamber 11 are both provided with a cooling structure 30, the air inlet 12 is connected with the cooling chamber 14, and the liquid outlet is connected with the capture chamber 11. In this way, by setting the partition structure 40 for separation, the high-temperature flue gas can be initially cooled and cooled in the cooling chamber 14, and then enter the capture chamber 11 through the connecting structure 50, so as to further ensure that the flue gas temperature in the capture chamber 11 is low enough. At the same time, the partition structure 40 can also prevent the absorption liquid from flowing into the cooling chamber 14.

[0042] Optionally, the partition structure 40 is an arc-shaped plate, which protrudes toward the side away from the spray device 20, so that the partition structure 40 forms a guide surface 41 on the plate surface facing the spray device 20. The partition structure 40 also has a liquid outlet 42, and the guide surface 41 is used to guide the absorption liquid flowing onto the partition structure 40 to the liquid outlet 42, and the liquid outlet 42 is connected to the spray device 20 through the absorption liquid circulation component 60. In this way, the guide surface 41 can guide the absorption liquid flowing onto the partition structure 40, so that the absorption liquid can spontaneously flow to the liquid outlet 42. At the same time, the absorption liquid circulation component can realize the circulation and spraying of the absorption liquid, thereby reducing the operating cost of the capture device.

[0043] Optionally, the absorption liquid circulation component 60 includes: a pipeline 61, through which the liquid outlet 42 is connected to the spray device 20; a buffer device 62, which is arranged on the pipeline 61, and the buffer cavity of the buffer device 62 is used to buffer the absorption liquid; a pump body device 63, which is arranged on the pipeline 61, and the pump body device 63 is used to drive the absorption liquid in the pipeline 61 to flow. Among them, there are at least two pump body devices 63, at least one pump body device 63 is located on the liquid inlet side of the buffer device 62, and at least another pump body device 63 is located on the liquid outlet side of the buffer device 62. In this way, the absorption liquid flowing into the liquid outlet 42 can flow into the buffer device 62 under the driving action of the pump body device 63 located on the liquid inlet side of the buffer device 62, and flow to the spray device 20 under the driving action of the pump body device 63 located on the liquid outlet side of the buffer device 62, thereby realizing the circulation and spraying of the absorption liquid. At the same time, the buffer device 62 can buffer a certain amount of excess absorption liquid to replenish the lost absorption liquid.

[0044] In this embodiment, the overall structure of the cache device 62 is a box structure with a cache cavity inside. Its specific structure is relatively conventional and will not be described in detail here.

[0045] In this embodiment, a filtering structure may be provided at the liquid outlet 42 to filter the absorption liquid to prevent impurities from flowing into the pump body device 63 and causing damage to the pump body device 63 .

[0046] Optionally, the connecting structure 50 is tubular and includes a first pipe section 51, a second pipe section 52 and a third pipe section 53 that are interconnected. The second pipe section 52 is located between the first pipe section 51 and the third pipe section 53. The first pipe section 51 is arranged in the through hole. The second pipe section 52 and the third pipe section 53 are located in the capture chamber 11. The gas flows out through the third pipe section 53 away from one end of the second pipe section 52. The third pipe section 53 is arranged at an angle A with the height direction of the shell 10, and the angle A satisfies: 90°<A≤180°. Among them, there are multiple through holes, multiple connecting structures 50, multiple through holes are arranged at intervals around the liquid outlet 42, and multiple connecting structures 50 are arranged one by one with multiple through holes. In this way, the above-mentioned setting of the connecting structure 50 can avoid flowing into the cooling chamber 14 through the connecting structure 50. At the same time, the above-mentioned setting makes the number of connecting structures 50 more flexible and diverse to adapt to different working conditions and use requirements, and also increases the connecting area to ensure that the smoke can stably flow into the capture chamber.

[0047] Optionally, there are multiple spray devices 20, which are spaced apart along the height direction of the shell 10, and at least one cooling structure 30 is provided between two adjacent spray devices 20. In this way, the above arrangement enables the flue gas to be cooled by the cooling structure 30 before multiple spraying, so as to offset the heat generated in the reaction process between carbon dioxide and the absorption liquid, and further ensure that the temperature of the flue gas is sufficiently low.

[0048] In this embodiment, there are three spray devices 20 , which are arranged at intervals along the height direction of the housing 10 , and a cooling structure 30 is arranged between two adjacent spray devices 20 .

[0049] In other embodiments not shown in the drawings, the cooling structure 30 is in a plate shape, and a cooling channel 32 is formed between any circle of the plate surface of the cooling structure 30 and the circle of the plate surface adjacent thereto. In this way, the above arrangement makes the structure of the cooling structure 30 more flexible and diverse to adapt to different working conditions and usage requirements, and also improves the processing flexibility of the staff.

[0050] Optionally, the cooling structure 30 is a cooling plate.

[0051] like Figure 1 As shown, the capture device also includes a receiving groove 70, which is arranged on the bottom wall of the cooling cavity 14, and the receiving groove 70 is used to receive condensed water. In this way, the above arrangement can collect condensed water on the surface of the cooling structure 30 located in the cooling cavity 14, so that the condensed water continues to accumulate in the cooling cavity 14.

[0052] Optionally, the housing 10 is provided with an inspection port connected to the cooling chamber 14 , and a worker pours out the condensed water in the receiving tank 70 through the inspection port.

[0053] Optionally, the capture device further includes a temperature detection device, a control valve 80 and a control module, wherein the temperature detection device is disposed in the capture chamber 11, and the temperature detection device is used to detect the temperature in the capture chamber 11. The control valve 80 is disposed at the air inlet 12. The control module is connected to both the control valve 80 and the temperature detection device, and the control module controls the opening of the control valve 80 according to the detection value of the temperature detection device. In this way, the control module can adjust the opening of the control valve in real time according to the detection value of the temperature detection device, so as to control the flow rate of the flue gas entering the cooling chamber 14 and the capture chamber 11, and further avoid the situation where the flue gas temperature is too high.

[0054] Optionally, the temperature detection device is a temperature sensor.

[0055] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0056] The shell of the capture device has a capture chamber, an air inlet and an air outlet. The air inlet is connected to the air outlet through the capture chamber, and the air inlet is located below the air outlet. The spray device is arranged in the capture chamber and is used to spray the absorption liquid used to absorb the gas to be captured into the capture chamber. The cooling structure has a liquid inlet, a liquid outlet and a flow chamber. The liquid inlet is connected to the liquid outlet through the flow chamber. The flow chamber is used to supply the cooling medium to flow. The cooling structure is arranged in a spiral shape. A cooling channel is formed around any circle of the cooling structure and an adjacent circle. The cooling channel is connected to the capture chamber, and the cooling structure is used to cool the gas flowing through the cooling channel. There are multiple cooling structures, and the multiple cooling structures are arranged at intervals along the height direction of the shell. The spray device is located above at least one cooling structure. In this way, after the high-temperature flue gas passes into the capture chamber through the air inlet, it can spontaneously flow to the air outlet. During the flow process, since the spray device is located above at least one cooling structure, the flue gas can be cooled by the cooling structure and then react with the absorption liquid sprayed by the spray device. At the same time, the spirally arranged cooling structure enables the cooling structure to have a sufficiently large cooling area (cooling channel) in the limited volume of the capture chamber, so as to maximize the cooling effect of the cooling structure, avoid the phenomenon of reverse reaction between carbon dioxide and the absorption liquid caused by excessively high flue gas temperature, and thus solve the problem of low capture rate of the absorption tower used for capturing carbon dioxide in the prior art.

[0057] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0058] 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.

[0059] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0060] 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 capture device, characterized in that: include: A housing (10) having a collecting chamber (11), an air inlet (12) and an air outlet (13), wherein the air inlet (12) is connected to the air outlet (13) through the collecting chamber (11), and the air inlet (12) is located below the air outlet (13); A spray device (20) is arranged in the capture chamber (11), and the spray device (20) is used to spray an absorption liquid for absorbing the gas to be captured into the capture chamber (11); A cooling structure (30) having a liquid inlet (31), a liquid outlet and a circulation cavity, wherein the liquid inlet (31) is connected to the liquid outlet through the circulation cavity, the circulation cavity is used for cooling medium to flow, the cooling structure (30) is arranged in a spiral shape, and a cooling channel (32) is formed between any circle of the cooling structure (30) and an adjacent circle, the cooling channel (32) is connected to the capture cavity (11), and the cooling structure (30) is used for cooling the gas flowing through the cooling channel (32); There are a plurality of cooling structures (30), and the plurality of cooling structures (30) are arranged at intervals along the height direction of the shell (10), and the spray device (20) is located above at least one of the cooling structures (30).

2. The capture device according to claim 1, characterized in that: The cooling structure (30) comprises a plurality of interconnected tubular components (33), wherein the plurality of tubular components (33) are arranged in a spiral shape; Each of the tubular components (33) comprises a bending section (34) and a straight section (35) that are connected to each other, and the straight section (35) extends along the height direction of the shell (10). In two adjacent tubular components (33), the straight section (35) of one tubular component (33) is connected to the bending section (34) of the other tubular component (33).

3. The capture device according to claim 1, characterized in that: The capture device also includes: a partition structure (40) disposed in the shell (10) and having a through hole, wherein the partition structure (40) partitions the inner cavity of the shell (10) into the collection cavity (11) and the cooling cavity (14); a connecting structure (50), at least a portion of the connecting structure (50) being disposed in the through hole, and the collecting chamber (11) being connected to the cooling chamber (14) via the connecting structure (50); Wherein, a cooling structure (30) is provided in both the cooling chamber (14) and the collecting chamber (11); the air inlet (12) is in communication with the cooling chamber (14); and the liquid outlet is in communication with the collecting chamber (11).

4. The capture device according to claim 3, characterized in that: The partition structure (40) is an arc-shaped plate, and the arc-shaped plate protrudes toward a side away from the spray device (20), so that the plate surface of the partition structure (40) facing the spray device (20) forms a guide surface (41); wherein the partition structure (40) also has a liquid outlet hole (42), and the guide surface (41) is used to guide the absorption liquid flowing onto the partition structure (40) to the liquid outlet hole (42), and the liquid outlet hole (42) is connected to the spray device (20) through an absorption liquid circulation component (60).

5. The capture device according to claim 4, characterized in that: The absorption liquid circulation component (60) comprises: A pipeline (61), wherein the liquid outlet (42) is connected to the spray device (20) through the pipeline (61); A buffer device (62) is arranged on the pipeline (61), and a buffer cavity of the buffer device (62) is used to buffer the absorption liquid; A pump device (63) is arranged on the pipeline (61), and the pump device (63) is used to drive the absorption liquid in the pipeline (61) to flow; There are at least two pump body devices (63), at least one of which is located on the liquid inlet side of the buffer device (62), and at least another of which is located on the liquid outlet side of the buffer device (62).

6. The capture device according to claim 4, characterized in that: The connecting structure (50) is tubular and comprises a first pipe section (51), a second pipe section (52) and a third pipe section (53) which are interconnected, the second pipe section (52) being located between the first pipe section (51) and the third pipe section (53), the first pipe section (51) being inserted into the through hole, the second pipe section (52) and the third pipe section (53) being located in the collecting chamber (11), the gas flowing out through the end of the third pipe section (53) away from the second pipe section (52), the third pipe section (53) being arranged at an angle A with respect to the height direction of the shell (10), the angle A satisfies: 90°<A≤180°; There are a plurality of through holes, a plurality of connecting structures (50), the plurality of through holes are arranged at intervals around the liquid outlet hole (42), and the plurality of connecting structures (50) are arranged in one-to-one correspondence with the plurality of through holes.

7. The capture device according to claim 1, characterized in that: There are a plurality of the spray devices (20), and the plurality of the spray devices (20) are arranged at intervals along the height direction of the shell (10), and at least one cooling structure (30) is arranged between two adjacent spray devices (20).

8. The capture device according to claim 1, characterized in that: The cooling structure (30) is in the shape of a plate, and a cooling channel (32) is formed between any circle of plate surface of the cooling structure (30) and a circle of plate surface adjacent thereto.

9. The capture device according to claim 3, characterized in that: The capture device also includes: A receiving groove (70) is arranged on the bottom wall of the cooling cavity (14), and the receiving groove (70) is used to receive condensed water.

10. The capture device according to claim 1, characterized in that: The capture device also includes: a temperature detection device, arranged in the capture chamber (11), the temperature detection device being used to detect the temperature in the capture chamber (11); A control valve (80) is arranged at the air inlet (12); A control module is connected to both the control valve (80) and the temperature detection device, and the control module controls the opening of the control valve (80) according to the detection value of the temperature detection device.

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