Ozone generating device and carbon dioxide capture system

Abstract

The present application relates to the technical field of carbon capture, in particular to an ozone generating device and a carbon dioxide capture system, the ozone generating device comprises an ozone generating assembly, the ozone generating assembly is adapted to be arranged between an absorption tower and a heat exchanger, the ozone generating assembly comprises a first electrode, a second electrode and a dielectric body, the first electrode is a ring electrode, the ring electrode is sleeved on a conveying pipeline of an absorbent discharged by the absorption tower and exchanges heat with the absorbent conveyed in the conveying pipeline, the second electrode is oppositely arranged with the first electrode in the radial direction of the conveying pipeline to form a discharge area, at least part of the dielectric body covers one side of the first electrode close to the second electrode and / or one side of the second electrode close to the first electrode, and the dielectric body is used for corona discharge by using a potential difference between the first electrode and the second electrode to generate ozone, the ozone generating device of the present application can be cooled by using the cold energy of the absorbent, thereby reducing the processing cost.

Description

Technical Field

[0001] This invention relates to the field of carbon capture technology, specifically to an ozone generator and a carbon dioxide capture system. Background Technology

[0002] In the carbon capture process, flue gas enters the absorption tower from the bottom and comes into full contact with the absorbent. The absorbent absorbs the carbon dioxide in the flue gas, and the flue gas after removing the carbon dioxide will be discharged from the top of the absorption tower. Due to the contact between the flue gas and the absorbent, a small amount of absorbent will be carried in the discharged flue gas. Organic amines are often used as absorbents. The volatilization of organic amines will cause environmental pollution. In related technologies, the discharged flue gas is often collected and treated before being released, which results in high treatment costs. Summary of the Invention

[0003] This invention aims to at least partially solve one of the technical problems in related technologies. To this end, embodiments of this invention provide an ozone generator that can produce ozone to oxidize organic pollutants in flue gas, while simultaneously utilizing the cooling capacity of an absorbent to reduce treatment costs.

[0004] This invention also proposes a carbon dioxide capture system.

[0005] An ozone generating device according to an embodiment of the present invention includes an ozone generating component, which is adapted to be disposed between an absorption tower and a heat exchanger. The ozone generating component includes a first electrode, a second electrode, and a dielectric. The first electrode is an annular electrode, which is sleeved on a conveying pipe for absorbent discharged from the absorption tower. The first electrode can exchange heat with the absorbent conveyed in the conveying pipe. The second electrode is arranged radially opposite to the first electrode in the conveying pipe to form a discharge zone between the second electrode and the first electrode. The dielectric covers at least a portion of the side of the first electrode near the second electrode and / or the side of the second electrode near the first electrode. There is a potential difference between the first electrode and the second electrode. The dielectric is used to generate ozone by using the potential difference to perform corona discharge.

[0006] The ozone generator of this invention can generate ozone to oxidize organic pollutants in flue gas, while using the cooling capacity of the absorbent to reduce treatment costs.

[0007] In some embodiments, the first electrode is detachably connected to the delivery pipe, and the first electrode abuts against the outer wall surface of the delivery pipe.

[0008] In some embodiments, the ozone generator further includes a collector, which is an annular collector. The annular conveyor is arranged at a distance from the first electrode. The annular collector is sleeved on the conveying pipe. One end of the dielectric and one end of the second electrode are both insulated from the annular collector.

[0009] In some embodiments, the annular collector has an annular chamber, one end of which is connected to the discharge zone to collect ozone generated by the discharge zone, and the other end of which is connected to the flue gas discharged from the flue gas outlet of the absorption tower to transfer the ozone into the flue gas.

[0010] In some embodiments, the ozone generator further includes a fan arranged at a distance from the collector, the fan being located upstream of the collector in the direction of airflow, and the direction of airflow being the same as the direction of absorbent flow in the delivery pipe.

[0011] In some embodiments, the first electrode and the second electrode are respectively connected to the positive and negative terminals of a power supply, and the voltage of the power supply is 10-15KV.

[0012] In some embodiments, the distance between the inner wall surface of the dielectric and the first electrode or the second electrode is A, where 1mm ≤ A ≤ 10mm.

[0013] In some embodiments, the thickness of the dielectric is B, and B ≤ 1 cm.

[0014] The carbon dioxide capture system of this invention includes: an ozone generator, wherein the ozone generator is the ozone generator described in the above embodiment; an absorption tower having a flue gas outlet and an absorbent outlet, wherein the flue gas outlet and the absorbent outlet are arranged at intervals in the extending direction of the absorption tower, and the absorbent outlet is located at the bottom of the absorption tower, and the ozone generator is disposed on the conveying pipe of the absorbent discharged from the absorbent outlet of the absorption tower.

[0015] The carbon dioxide capture system of this invention can improve the environmental friendliness of carbon dioxide capture systems.

[0016] In some embodiments, the carbon dioxide capture system further includes a heat exchanger having a first channel connected to the output end of the delivery pipeline to transfer the absorbent discharged from the absorption tower into the first channel for heat exchange. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of an ozone generator according to an embodiment of the present invention.

[0018] Figure 2 This is a schematic diagram of a carbon dioxide capture system according to an embodiment of the present invention.

[0019] Figure label:

[0020] Absorption tower 100, flue gas outlet 110, absorbent outlet 120, flue gas inlet 130, absorbent inlet 140, heat exchanger 200, first channel 210, second channel 220.

[0021] 300mm conveying pipeline, 400mm regeneration tower.

[0022] Ozone generating component 1, first electrode 11, first wall surface 111, second wall surface 112.

[0023] Second electrode 12, third wall surface 121, fourth wall surface 122

[0024] Dielectric 13, fifth wall 131, sixth wall 132, discharge region 14

[0025] Collector 2, annular chamber 21, fan 3, transmission pipe 4. Detailed Implementation

[0026] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0027] An ozone generating device according to an embodiment of the present invention includes an ozone generating component 1, which is adapted to be disposed between an absorption tower 100 and a heat exchanger 200. The ozone generating component 1 includes a first electrode 11, a second electrode 12, and a dielectric 13. The first electrode 11 is an annular electrode, which is sleeved on a conveying pipe 300 for the absorbent discharged from the absorption tower 100. The first electrode 11 can exchange heat with the absorbent conveyed in the conveying pipe 300. The second electrode 12 is arranged radially opposite to the first electrode 11 in the pipe to form a discharge region 14 between the second electrode 12 and the first electrode 11. At least a portion of the dielectric 13 covers the side of the first electrode 11 near the second electrode 12 and / or the side of the second electrode 12 near the first electrode 11. There is a potential difference between the first electrode 11 and the second electrode 12. The dielectric 13 is used to generate ozone by using the potential difference to perform corona discharge.

[0028] It should be noted that after the absorbent enters the absorption tower 100 from the top and absorbs carbon dioxide in the flue gas, it is discharged from the bottom of the absorption tower 100 and transported to the heat exchanger 200 through the conveying pipe 300 for heating. The first electrode 11 of the ozone generator is mounted on the conveying pipe 300.

[0029] Specifically, such as Figure 1 As shown, a first electrode 11 is sleeved on a conveying pipe 300. The first electrode 11 has a first wall surface 111 and a second wall surface 112 arranged opposite to each other in its thickness direction. The first wall surface 111 is adjacent to and in contact with the conveying pipe 300, and the second wall surface 112 is away from the conveying pipe 300. The second electrode 12 has a third wall surface 121 and a fourth wall surface 122 arranged at intervals in its thickness direction. The third wall surface 121 is adjacent to the second wall surface 112 of the first electrode 11, and the fourth wall surface 122 is away from the first electrode 11. The second electrode 12 and the first electrode 11 are arranged at intervals to form a discharge region 14 between the second electrode 12 and the first electrode 11.

[0030] The second electrode 12 and the first electrode 11 are arranged at intervals in the radial direction of the conveying pipe 300. In this embodiment, the second electrode 12 is plate-shaped. Since the first electrode 11 is an annular electrode, the number of second electrodes 12 can be set to multiple. Multiple second electrodes 12 are arranged at intervals in the circumferential direction of the conveying pipe 300, and there is no overlap between two adjacent second electrodes 12, so that multiple second electrodes 12 correspond to different regions of the first electrode 11 in its circumferential direction, forming multiple discharge regions 14.

[0031] For example, the first wall surface 111 is the inner wall surface of the first electrode 11, and the second wall surface 112 is the outer wall surface of the first electrode 11. The third wall surface 121 is the inner wall surface of the second electrode 12, and the fourth wall surface 122 is the outer wall surface of the second electrode 12. A discharge region 14 is formed between the outer wall surface of the first electrode 11 and the inner wall surface of the second electrode 12.

[0032] The dielectric 13 covering at least a portion of the outer wall surface of the first electrode 11 and / or the inner wall surface of the second electrode 12 includes three cases: the first case is that at least a portion of the dielectric 13 covers the outer wall surface of the first electrode 11; the second case is that at least a portion of the dielectric 13 covers the inner wall surface of the second electrode 12; and the third case is that there are two dielectric 13s, one of which covers at least a portion of the outer wall surface of the first electrode 11, and the other covers at least a portion of the inner wall surface of the second electrode 12. In this embodiment, the second case is used, where the dielectric 13 covers the inner wall surface of the second electrode 12, and the covering is complete.

[0033] The dielectric 13 is covered on the inner wall of the second electrode 12, or in other words, the dielectric 13 and the second electrode 12 are stacked to establish an electric field between the dielectric 13 and the first electrode 11. Since the first electrode 11 is a ring electrode, the dielectric 13 is covered on the first electrode 11. The dielectric 13 also needs to be set as a ring. The ring dielectric 13 is difficult to manufacture. Covering the dielectric 13 on the second electrode 12 and setting the dielectric 13 as a plate reduces the manufacturing difficulty of the dielectric 13 and thus reduces the manufacturing cost.

[0034] For example, dielectric 13 is dielectric ceramic, which refers to a material that can conduct electricity but has poor conductivity. The dielectric ceramic has a fifth wall 131 and a sixth wall 132 arranged opposite to each other in its thickness direction. The fifth wall 131 is adjacent to the first electrode 11. The second electrode 12 is formed by applying a metal plating layer to the sixth wall 132 of the dielectric ceramic, which facilitates the fabrication of the second electrode 12 and the dielectric ceramic. Moreover, the dielectric ceramic completely covers the second electrode 12 to form a more uniform electric field distribution, thereby improving the performance of the ozone generating device.

[0035] Understandably, ozone generators produce a lot of heat during the discharge process, and generally require cooling water to cool them down.

[0036] In this embodiment, a first electrode 11 is provided on the conveying pipe 300 between the absorption tower 100 and the heat exchanger 200, and a second electrode 12 is provided at a distance from the first electrode 11. By stacking dielectric ceramics on the third wall surface 121 of the second electrode 12, corona discharge occurs on the outer surface of the dielectric ceramics when energized, breaking down the air and converting oxygen in the air into ozone to oxidize organic pollutants in the flue gas. At the same time, since the first wall surface 111 of the first electrode 11 is in contact with the outer wall surface of the conveying pipe 300, the first electrode 11 and the absorbent in the conveying pipe 300 exchange heat, the temperature of the first electrode 11 decreases, and the temperature of the absorbent increases. This achieves the simultaneous generation of ozone to oxidize organic pollutants in the flue gas and the use of the cooling capacity of the absorbent to cool the first electrode 11, reducing the complexity of the ozone generating device and lowering the processing cost.

[0037] In some embodiments, the first electrode 11 is detachably connected to the delivery pipe 300, and the first electrode 11 abuts against the outer wall surface of the delivery pipe 300.

[0038] In this embodiment, the first electrode 11 and the conveying pipe 300 are made detachable, which facilitates the installation and replacement of the first electrode 11. By abutting the first electrode 11 against the outer wall of the conveying pipe 300, the contact between the first electrode 11 and the conveying pipe 300 is ensured, thereby improving the heat exchange effect between the first electrode 11 and the absorbent and thus improving the performance of the ozone generator.

[0039] For example, when the first electrode 11 is a ring electrode, it can be clamped onto the conveying pipe 300 by two concentrically arranged arc-shaped electrode plates with the same arc.

[0040] In some embodiments, the ozone generator further includes a collector 2, which is an annular collector 2. The annular conveyor is arranged at a distance from the first electrode 11. The annular collector 2 is sleeved on the conveying pipe 300. One end of the dielectric 13 and the second electrode 12 are both insulated from the annular collector 2.

[0041] Specifically, such as Figure 1 As shown, the collector 2 is located to the left of the first electrode 11. The annular collector 2 is sleeved on the conveying pipe 300 to fix the annular collector 2 on the conveying pipe 300. The left end of the dielectric 13 is connected to the right end of the annular collector 2, which facilitates fixing the position of the dielectric 13 and improves the ease of installation of the second electrode 12 and the dielectric 13.

[0042] In some embodiments, the annular collector 2 has an annular chamber 21, one end of which is connected to the discharge zone 14 to collect the ozone generated by the discharge zone 14, and the other end of which is connected to the flue gas discharged from the flue gas outlet 110 of the absorption tower 100 to transfer the ozone into the flue gas.

[0043] Specifically, such as Figure 1 As shown, the right side of the annular chamber 21 is connected to the discharge zone 14 to collect the ozone generated by the discharge zone 14 into the annular chamber 21, and then transmit it through the upper end of the annular chamber 21 to the flue gas outlet 110 at the upper end of the absorption tower 100, so that the ozone mixes with the flue gas discharged from the absorption tower 100. Ozone has strong oxidizing properties and can oxidize the volatile organic compounds in the flue gas to generate pollution-free carbon dioxide, nitrogen and water, thus purifying the flue gas and avoiding air pollution caused by volatile pollutants in the carbon capture system. This allows the annular collector 2 to fix the dielectric 13 and the second electrode 12 on the one hand, and collect the ozone generated by the discharge zone 14 between the first electrode 11 and the second electrode 12 on the other hand.

[0044] Optionally, the ozone generator also includes a transmission pipe 4, the lower end of which is connected to the upper end of the annular chamber 21, and the upper end of the transmission pipe 4 extends above the flue gas outlet 110 of the absorption tower 100 to facilitate the mixing of ozone and flue gas.

[0045] In some embodiments, the ozone generator further includes a fan 3, which is arranged at a distance from the collector 2, and the fan 3 is located upstream of the collector 2 in the direction of air flow, and the direction of air flow is the same as the flow direction of the absorbent in the delivery pipe 300.

[0046] Specifically, such as Figure 1 As shown, the fan 3 is located to the left of the first electrode 11 and corresponds to the discharge area 14 located between the first electrode 11 and the second electrode 12. The fan 3 delivers air to the discharge area 14 to accelerate the air flow.

[0047] Optionally, a dryer can be installed between the fan 3 and the discharge zone 14. The dryer is used to dry the air. Under the action of the fan 3, the dried purified air is transmitted to the discharge zone 14. After the discharge zone 14 is broken down and ozone is generated, it is then transported to the collector 2.

[0048] For example, the number of fans 3 corresponds one-to-one with the number of discharge zones 14. At the same time, the number of fans 3 and the number of dryers can also be set to be the same to ensure the discharge efficiency of each discharge zone 14.

[0049] In this embodiment, by setting the air flow direction in the discharge zone 14 to be the same as the absorbent flow direction in the delivery pipe 300, heat exchange between the air and the absorbent is facilitated, thereby improving heat exchange efficiency.

[0050] In some embodiments, the first electrode 11 and the second electrode 12 are respectively connected to the positive and negative terminals of the power supply, and the voltage of the power supply is 10-15KV.

[0051] In this embodiment, the power supply connected to the first electrode 11 and the second electrode 12 is high-voltage alternating current. When the voltage is 10-15KV, a corona discharge is generated on the fifth wall surface 131 of the dielectric ceramic. The free high-energy ions in the corona dissociate oxygen molecules and polymerize into ozone molecules through collision, which is conducive to the generation of ozone. The ozone production is relatively large and has high continuity and stability.

[0052] For example, the power supply voltage is 10KV, 11KV, 12KV, 13KV, 14KV, or 15KV.

[0053] In some embodiments, the distance between the inner wall surface of the dielectric 13 and the first electrode 11 or the second electrode 12 is A, where 1 mm ≤ A ≤ 10 mm.

[0054] In this embodiment, the inner wall surface of the dielectric 13 refers to the fifth wall surface 131 of the dielectric 13. The dielectric 13 and the third wall surface 121 of the second electrode 12 are stacked. The spacing distance here refers to the spacing distance between the fifth wall surface 131 of the dielectric 13 and the second wall surface 112 of the first electrode 11.

[0055] It is understandable that the smaller the gap between the electrodes, the lower the voltage required, the less power consumption, and the higher the ozone concentration. In this embodiment, by limiting the discharge gap between the first electrode 11 and the second electrode 12, that is, the distance between the first electrode 11 and the second electrode 12, the ozone concentration is increased, thereby improving the oxidation effect of ozone on flue gas.

[0056] For example, the interval distance can be 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, or 10mm. In this embodiment, the interval distance is 5mm.

[0057] In some embodiments, the thickness of dielectric 13 is B, and B ≤ 1 cm.

[0058] In this embodiment, by limiting the thickness of the dielectric 13, it is possible to avoid the dielectric 13 being too thin, which would result in poor voltage resistance and easy breakdown by high voltage. At the same time, it is also possible to avoid the dielectric 13 being too thick, which would be detrimental to ozone generation.

[0059] For example, the thickness of dielectric 13 is 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, or 1cm.

[0060] The carbon dioxide capture system of this invention includes an ozone generator and an absorption tower 100. The ozone generator is the same as the one described in the above embodiment. The absorption tower 100 has a flue gas outlet 110 and an absorbent outlet 120, which are spaced apart in the extending direction of the absorption tower 100, and the absorbent outlet 120 is located at the bottom of the absorption tower 100. The ozone generator is installed on the absorbent conveying pipe 300 that discharges absorbent from the absorbent outlet 120 of the absorption tower 100.

[0061] Specifically, such as Figure 2 As shown, the absorption tower 100 has a flue gas inlet 130 and an absorbent inlet 140. The flue gas inlet 130 is located at the lower end of the absorption tower 100, the flue gas outlet 110 is located at the upper end of the absorption tower 100, the absorbent inlet 140 is located at the upper end of the absorption tower 100, and the absorbent outlet 120 is located at the lower end of the absorption tower 100. The flue gas enters the absorption tower 100 from the lower end and flows upward. The absorbent enters the absorption tower 100 from the upper end and flows downward, contacting the flue gas to absorb carbon dioxide from the flue gas. The absorbent that has absorbed carbon dioxide becomes a rich solution and is discharged from the absorbent outlet 120. Since the rich solution needs to be heated during regeneration, the first electrode 11 is fitted onto the conveying pipe 300 to heat the rich solution, reducing the heat energy consumed during rich solution regeneration and improving the performance of the carbon capture system.

[0062] In this embodiment of the invention, the flue gas is discharged through flue gas outlet 110 and mixed with ozone generated by the ozone generator. Under the strong oxidizing effect of ozone, the volatile organic pollutants in the flue gas are oxidized by oxygen, thus purifying the flue gas and avoiding air pollution caused by volatile pollutants in the flue gas discharged from the carbon capture system, thereby improving the environmental friendliness of the carbon capture system.

[0063] In some embodiments, the carbon dioxide capture system further includes a heat exchanger 200 having a first channel 210 connected to the output end of the delivery pipe 300 to transfer the absorbent discharged from the absorption tower 100 into the first channel 210 for heat exchange.

[0064] Specifically, such as Figure 2As shown, the carbon dioxide capture system also includes a regeneration tower 400, which is used to regenerate the rich absorbent solution. The heat exchanger 200 has a second channel 220, which is connected to the absorbent lean solution outlet at the lower end of the regeneration tower 400. The lean solution in the second channel 220 and the rich solution in the first channel 210 can exchange heat. The absorbent discharged from the absorption tower 100 is transferred to the heat exchanger 200 for heating. In this embodiment, the absorbent is initially heated by the ozone generator while the first electrode 11 is cooled, which saves the heating energy of the absorbent and makes full use of the waste heat generated by the ozone generator, further improving the performance of the carbon dioxide capture system.

[0065] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0066] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0067] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0068] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0069] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0070] It is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An ozone generating device, characterized by comprising: The device includes an ozone generating assembly adapted to be disposed between an absorption tower and a heat exchanger. The ozone generating assembly includes a first electrode, a second electrode, and a dielectric. The first electrode is an annular electrode, which is sleeved on a conveying pipe for the absorbent discharged from the absorption tower. The first electrode exchanges heat with the absorbent conveyed in the conveying pipe. The second electrode is arranged radially opposite to the first electrode in the conveying pipe to form a discharge zone between the second electrode and the first electrode. The dielectric at least partially covers the side of the first electrode near the second electrode and / or the side of the second electrode near the first electrode. There is a potential difference between the first electrode and the second electrode. The dielectric is used to generate ozone by using the potential difference to perform corona discharge.

2. The ozone generating device according to claim 1, wherein The first electrode is detachably connected to the conveying pipe, and the first electrode abuts against the outer wall surface of the conveying pipe.

3. The ozone generating device according to claim 2, wherein It also includes a collector, which is a ring collector. The ring collector is arranged at a distance from the first electrode and is sleeved on the delivery pipe. One end of the dielectric and one end of the second electrode are both insulated from the ring collector.

4. The ozone generating device according to claim 3, wherein The annular collector has an annular chamber, one end of which is connected to the discharge zone to collect the ozone generated by the discharge zone, and the other end of which is connected to the flue gas discharged from the flue gas outlet of the absorption tower to transfer the ozone into the flue gas.

5. The ozone generating device according to claim 3, wherein It also includes a fan, which is arranged at an interval from the collector. The fan is located upstream of the collector in the direction of airflow, and the direction of airflow is the same as the direction of absorbent flow in the delivery pipe.

6. The ozone generating device according to claim 1, wherein The first electrode and the second electrode are respectively connected to the positive and negative terminals of the power supply, and the voltage of the power supply is 10-15KV.

7. The ozone generating device according to any one of claims 1 to 6, characterized in that, The distance between the inner wall of the dielectric and the first electrode or the second electrode is A, where 1mm ≤ A ≤ 10mm.

8. The ozone generating device according to claim 7, wherein The thickness of the dielectric is B, and B≤1cm.

9. A carbon dioxide capture system characterized by, include: An ozone generator, wherein the ozone generator is any one of the ozone generators described in claims 1-8 above; An absorption tower having a flue gas outlet and an absorbent outlet, the flue gas outlet and the absorbent outlet being arranged at intervals along the extension direction of the absorption tower, and the absorbent outlet being located at the bottom of the absorption tower, and the ozone generator being installed on the conveying pipeline of the absorbent discharged from the absorbent outlet of the absorption tower.

10. The carbon dioxide capture system of claim 9, wherein, It also includes a heat exchanger having a first channel connected to the output end of the conveying pipeline to transfer the absorbent discharged from the absorption tower into the first channel for heat exchange.

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