Indirect air cooling tower with carbon dioxide trapping function and thermal power plant cooling system

Abstract

The invention provides an indirect air cooling tower with a carbon dioxide capturing function and a heat-engine plant cooling system.The indirect air cooling tower comprises a tower barrel, a capturing assembly and a softening assembly, the capturing assembly comprises a reactor and an alkali liquor pool, the reactor comprises reaction filler and a first filler spray head, the first filler spray head is provided with a first spray opening, and the first spray opening is communicated with the alkali liquor pool; the first spraying opening faces the reaction filler, and the first filler spraying head is communicated with the alkali liquor pool; the softening assembly comprises a cleaning device, a water curtain nozzle and a softening liquid pool, a water collecting component is arranged in the cleaning device, the reactor and the cleaning device are sequentially arranged in the air inlet direction of the tower drum, the cleaning device is located on the rear side of the reactor in the air inlet direction of the tower drum, the water curtain nozzle is communicated with the softening liquid pool and arranged in the cleaning device, and the softening liquid pool is communicated with the water curtain nozzle. And the water curtain nozzle is used for forming a water curtain in the cleaner. The efficient cooling performance of the indirect air cooling tower can be kept, and meanwhile carbon dioxide in air can be effectively treated.

Description

Technical Field

[0001] The present invention relates to the technical field of thermal power generation, and particularly to an indirect air cooling tower with carbon dioxide capture function and a thermal power plant cooling system. Background Art

[0002] Thermal power plants mainly generate electricity by burning a large amount of coal. Inevitably, a large amount of carbon dioxide emissions will be produced during this process. Indirect air cooling towers are widely used in the circulating water cooling process of thermal power plants. They can utilize the heat exchange between ambient air and a closed circulating water system to achieve the cooling of circulating water. However, during the operation of the indirect air cooling tower, the carbon dioxide in the ambient air entering the tower is not effectively treated, which will affect the overall environmental protection performance of the power plant. Summary of the Invention

[0003] The present invention is made based on the inventor's discovery and recognition of the following facts and problems:

[0004] An indirect air cooling tower is an efficient circulating water cooling device. It utilizes the heat exchange principle between ambient air and a closed circulating water system, and through natural or forced ventilation, transfers the heat in the circulating water to the air, thereby achieving the effective cooling of the circulating water.

[0005] However, although the indirect air cooling tower performs excellently in terms of cooling efficiency and water-saving performance, there is still a significant defect in environmental protection. Since the carbon dioxide concentration in the air around thermal power plants is usually high, and the indirect air cooling tower does not effectively treat or capture the carbon dioxide in the ambient air entering the tower during operation, resulting in the direct emission of this carbon dioxide into the atmosphere along with the flow of air in the tower. This not only fails to fully utilize the potential utilization value of carbon dioxide (such as as a chemical raw material or for carbon sequestration, etc.), but also may offset the efforts of the power plant in other environmental protection measures to a certain extent, thus affecting the overall environmental protection performance and social image of the power plant. Therefore, the embodiments of the present invention provide an indirect air cooling tower with carbon dioxide capture function and a thermal power plant cooling system, which can achieve the effective treatment of carbon dioxide in the air while maintaining the high cooling performance of the indirect air cooling tower.

[0006] The indirect air cooling tower with carbon dioxide capture function provided by the embodiment of the present invention includes a tower barrel, a capture component and a softening component. The capture component includes a reactor and an alkali liquor tank. The reactor includes reaction fillers and a first filler spray head. The first filler spray head has a first spray orifice, and the first spray orifice is arranged towards the reaction fillers. The first filler spray head is communicated with the alkali liquor tank. The softening component includes a washer, a water curtain spray head and a softening liquor tank. A water collection component is arranged in the washer. The reactor and the washer are arranged in sequence along the air inlet direction of the tower barrel. The washer is located at the rear side of the reactor in the air inlet direction of the tower barrel. The water curtain spray head is communicated with the softening liquor tank. The water curtain spray head is arranged in the washer, and the water curtain spray head is used to form a water curtain in the washer.

[0007] In summary, the indirect air cooling tower with carbon dioxide capture function provided by the embodiment of the present invention realizes the efficient capture and removal of carbon dioxide in the air through the capture component and the softening component, and at the same time ensures the stable operation of the system and the environmental friendliness.

[0008] In some embodiments, a plurality of water collection components are provided. The water curtain spray head is arranged between two adjacent water collection components. The water curtain spray head is used to form a water curtain with the softening liquor in the softening liquor tank between two adjacent water collection components.

[0009] In some embodiments, the water collection component includes an arc-shaped plate and a plurality of hook-shaped ribs. The cross section of the arc-shaped plate is W-shaped. The arc-shaped plate has a plurality of bending segments. The plurality of hook-shaped ribs are correspondingly arranged on the bending segments, and the hook-shaped ribs extend along the longitudinal direction of the arc-shaped plate.

[0010] In some embodiments, the indirect air cooling tower further includes a heat exchanger and a dry-wet operation component. The heat exchanger has a water inlet pipe and a water outlet pipe. The dry-wet operation component includes a first pipeline, a second pipeline and a plurality of dry-wet control valves. Two ends of the first pipeline are correspondingly connected to the water inlet pipe and the first filler spray head respectively. Two ends of the second pipeline are correspondingly connected to the water outlet pipe and the reactor respectively. The plurality of dry-wet control valves are respectively arranged on the first pipeline and the second pipeline. The dry-wet control valves are used to control the on-off of the first pipeline and the second pipeline.

[0011] In some embodiments, the heat exchanger includes a pipe body and a plurality of fins. The plurality of fins are arranged on the pipe body at equal intervals.

[0012] In some embodiments, the indirect air cooling tower further includes a precooling operation component, which includes a third pipeline, a fourth pipeline, and a plurality of precooling control valves. The two ends of the third pipeline are correspondingly connected to the first packing spray head and the softened liquid pool, the two ends of the fourth pipeline are correspondingly connected to the softened liquid pool and the reactor, and the plurality of precooling control valves are respectively arranged on the third pipeline and the fourth pipeline. The precooling control valves are used to control the on-off of the third pipeline and the fourth pipeline.

[0013] In some embodiments, the indirect air cooling tower further includes a flue gas filtration component, which includes a housing, absorption packing, a second packing spray head, and a water collector. The housing has a flue gas inlet and a flue gas outlet. The absorption packing and the water collector are sequentially arranged between the flue gas inlet and the flue gas outlet. The second packing spray head is connected to the alkali liquid pool and has a second spray opening, and the second spray opening is arranged facing the absorption packing.

[0014] In some embodiments, the flue gas filtration component further includes an alkali liquid circulation pump and a connecting pipeline. The two ends of the connecting pipeline are correspondingly connected to the alkali liquid pool and the second spray head, and the alkali liquid circulation pump is arranged on the connecting pipeline. The alkali liquid circulation pump is used to flow the circulation in the alkali liquid pool through the connecting pipeline to the second spray head.

[0015] In some embodiments, the capture component further includes a fluid circulation pump, which is used to spray the fluid through the first spray opening on the first spray head towards the reaction packing;

[0016] And / or, the softening component further includes a softening circulation pump, which is used to flow the softened liquid in the softened liquid pool to the water curtain spray head;

[0017] And / or, the capture component further includes a shutter. The reactor has an air inlet, and the shutter is arranged at the air inlet.

[0018] In addition, the cooling system of a thermal power plant provided by an embodiment of the present invention includes the indirect air cooling tower with a carbon dioxide capture function provided by any of the above embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of an indirect air cooling tower with a carbon dioxide capture function provided by an embodiment of the present invention.

[0020] Reference numerals:

[0021] 10, tower barrel; 11, heat exchanger; 111, water inlet pipe; 112, water outlet pipe;

[0022] 20. Capture assembly; 21. Reactor; 211. Reaction packing; 212. First packing spray head; 213. Air inlet; 22. Alkali solution tank; 23. Fluid circulation pump; 24. Capture pipeline; 25. Capture control valve; 26. Louver;

[0023] 30. Softening assembly; 31. Cleaner; 32. Water curtain spray head; 33. Softening solution tank; 34. Water collection component; 35. Softening circulation pump; 36. Softening pipeline; 37. Softening control valve;

[0024] 41. First pipeline; 42. Second pipeline; 43. Dry-wet control valve;

[0025] 51. Third pipeline; 52. Fourth pipeline; 53. Pre-cooling control valve;

[0026] 60. Flue gas filtration assembly; 61. Housing; 611. Flue gas inlet; 612. Flue gas outlet; 62. Absorption packing; 63. Second packing spray head; 64. Water separator; 65. Fan; 66. Alkali solution circulation pump; 67. Connecting pipeline; 68. Alkali solution control valve; 69. Flowmeter. Detailed implementation mode

[0027] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as a limitation of the present invention.

[0028] As Figure 1 shown, an indirect air cooling tower with a carbon dioxide capture function provided by an embodiment of the present invention includes a tower barrel 10, a capture assembly 20 and a softening assembly 30. The capture assembly 20 includes a reactor 21 and an alkali solution tank 22. The reactor 21 includes reaction packing 211 and a first packing spray head 212. The first packing spray head 212 has a first spray port, and the first spray port is arranged facing the reaction packing 211. The first packing spray head 212 is communicated with the alkali solution tank 22; the softening assembly 30 includes a cleaner 31, a water curtain spray head 32 and a softening solution tank 33. A water collection component 34 is arranged in the cleaner 31. The reactor 21 and the cleaner 31 are arranged in sequence along the air inlet direction of the tower barrel 10. The cleaner 31 is located behind the reactor 21 in the air inlet direction of the tower barrel 10. The water curtain spray head 32 is communicated with the softening solution tank 33. The water curtain spray head 32 is arranged in the cleaner 31, and the water curtain spray head 32 is used to form a water curtain in the cleaner 31.

[0029] Specifically, reaction fillers 211 are arranged inside the reactor 21, which can increase the contact area between air and the lye sprayed by the first filler spray head 212, and further improve the absorption efficiency of lye for carbon dioxide. Moreover, the first filler spray head 212 is arranged at the top of the reactor 21, and the first spray port is set facing the reaction fillers 211, which can ensure that the lye accurately covers each filler particle, realizing uniform spraying of the lye onto the reaction fillers 211 and maximizing the absorption effect of lye on carbon dioxide.

[0030] The softening component 30 can further process the air that has passed through the capture component 20 to prevent the residual lye components in the air from causing adverse effects on other components inside the subsequent tower barrel 10. The scrubber 31 is arranged at the rear side of the reactor 21 to ensure that all the air passing through the reaction fillers 211 can be further purified. The water collection component 34 in the scrubber 31 can effectively collect and remove the water droplets in the air, ensuring the smooth flow of air. The softening liquid in the softening liquid pool 33 passes through the water curtain spray head 32 to form a water curtain, so that the lye components in the air passing through the water curtain are effectively removed, thereby improving the operation safety.

[0031] That is to say, the air first passes through the reaction fillers 211 to effectively remove carbon dioxide in the air. Then, the air passing through the reaction fillers 211 passes through the water curtain formed by the water curtain spray head 32, so that the lye components carried by the air can be effectively removed. Subsequently, through the water collection treatment of the water collection component 34, it finally enters the inside of the tower barrel 10 to exchange heat with the heat exchanger 11, completing the entire cooling process.

[0032] In summary, the indirect air cooling tower with carbon dioxide capture function provided by the embodiment of the present invention realizes the efficient capture and removal of carbon dioxide in the air through the capture component 20 and the softening component 30, while ensuring the stable operation of the system and environmental friendliness.

[0033] In some embodiments, there are multiple water collection components 34, and the water curtain spray head 32 is arranged between two adjacent water collection components. The water curtain spray head 32 is used to form a water curtain with the softening liquid in the softening liquid pool 33 between two adjacent water collection components 34, so that the water curtain spray head 32 can make full use of the space between the two water collection components 34 to form a continuous and stable water curtain, which can effectively intercept and remove the residual lye carried by the air, and improve the operation efficiency and stability of the whole system.

[0034] Among them, when the air passing through the reaction filler 211 passes through the water curtain formed by the water curtain nozzle 32, the lye components carried by the air will be adsorbed and neutralized by the softening liquid in the water curtain, so as to achieve the purpose of removal. Subsequently, the purified air will continue to flow forward and pass through the water collection component 34 to further collect and remove the water droplets in the air, ensuring that the air is dry and clean before entering the tower barrel 10 to exchange heat with the heat exchanger 11.

[0035] Furthermore, the water collection component 34 includes an arc-shaped plate and a plurality of hook-shaped fins. The cross-section of the arc-shaped plate is W-shaped, and the arc-shaped plate has a plurality of bending segments. The plurality of hook-shaped fins are correspondingly arranged on the bending segments, and the hook-shaped fins extend along the longitudinal direction of the arc-shaped plate. When the air passes through the water collection component 34, the water droplets therein will first be retained by the bending segments of the arc-shaped plate and then fixed by the hook-shaped fins. As the air continues to flow forward, these collected water droplets will gradually accumulate and slide along the surface of the arc-shaped plate, realizing the effective removal of the lye and water vapor in the air.

[0036] Among them, the W-shaped structure of the arc-shaped plate can increase the contact opportunity between the arc-shaped plate and the air, and form a plurality of "traps" for water droplet collection through a plurality of bending segments. When the air passes through these bending segments, the water droplets therein will be retained on the surface of the arc-shaped plate due to inertia, thus realizing the preliminary water droplet collection. The hook-shaped fins can more effectively "hook" and fix the water droplets to prevent them from being carried away again during the air flow. At the same time, the setting of the fins also increases the roughness of the surface of the arc-shaped plate, further improving the adhesion and collection efficiency of the water droplets.

[0037] In this embodiment, there are two water collection assemblies. The two water collection components 34 can be respectively referred to as the first component and the second component. The first component and the second component are relatively arranged on both sides of the water curtain nozzle 32 in the air inlet direction of the tower barrel 10, which not only enables the air to immediately encounter the water collection component 34 for water droplet collection after passing through the water curtain formed by the water curtain nozzle 32, but also ensures that the water collection component 34 can make full use of the power of air flow to improve the water droplet collection efficiency. Among them, in the air inlet direction of the tower barrel 10, the first component is located in front of the second component.

[0038] In some embodiments, the capture assembly 20 further includes a fluid circulation pump 23. The fluid circulation pump 23 is used to spray the fluid through the first spray openings on the first spray head towards the reaction filler 211. Among them, the fluid circulation pump 23 can increase the flow velocity of the fluid and spray it towards the reaction filler 211 through the first spray openings on the first spray head, which not only ensures that the lye can uniformly and continuously cover the reaction filler 211, but also improves the contact efficiency and reaction rate between carbon dioxide and the lye.

[0039] Further, the trapping assembly 20 further includes a trapping pipeline 24 and a trapping control valve 25. The trapping pipeline 24 is used to connect the reactor 21 and the lye tank 22. The trapping control valve 25 is provided on the trapping pipeline 24 and is used to control the on-off of the trapping pipeline 24 to control the flow of the lye in the lye tank 22 to the first packing spray head 212 in the reactor 21.

[0040] Furthermore, the fluid circulation pump 23 can be provided on the trapping pipeline 24, and the fluid circulation pump 23 can accelerate the fluid flow in the trapping pipeline 24.

[0041] In some embodiments, the softening assembly 30 further includes a softening circulation pump 35. The softening circulation pump 35 is used to direct the softening liquid in the softening liquid tank 33 to the water curtain spray head 32. Among them, the softening circulation pump 35 can provide the necessary power for the softening liquid, ensuring that the softening liquid can continuously and stably flow out of the softening liquid tank 33 and be transported to the water curtain spray head 32 through the pipeline. This not only ensures that the water curtain spray head 32 can continuously eject enough softening liquid to form a stable water curtain, but also improves the use efficiency of the softening liquid and the overall performance of the system.

[0042] When the softening circulation pump 35 is started, the softening liquid in the softening liquid tank 33 can be pumped out through the pipeline and pressurized and transported to the water curtain spray head 32. At the water curtain spray head 32, the softening liquid will be evenly sprayed into the air and come into contact and react with the water droplets and lye residues in the air, thereby removing these unwanted components.

[0043] Further, the softening assembly 30 further includes a softening pipeline 36 and a softening control valve 37. The softening pipeline 36 is used to connect the water curtain spray head 32 and the softening liquid tank 33. The softening control valve 37 is provided on the softening pipeline 36 and is used to control the on-off of the softening pipeline 36 to control the flow of the softening liquid in the softening liquid tank 33 to the water curtain spray head 32.

[0044] Furthermore, the softening circulation pump 35 is provided on the softening pipeline 36, and the softening circulation pump 35 is used to promote the flow of the softening liquid in the softening liquid tank 33 to the water curtain spray head 32.

[0045] In summary, the indirect air cooling tower with carbon dioxide capture function provided in the embodiments of the present invention has a carbon dioxide capture mechanism. When the indirect air cooling tower is in the carbon dioxide capture mechanism, the capture control valve 25 and the softening control valve 37 are opened. The lye in the lye pool 22 enters the first packing spray head 212 through the capture pipeline 24, the fluid circulation pump 23 and the capture control valve 25, and then is sprayed towards the reaction packing 211 through the first spray orifice on the first packing spray head 212 to effectively remove carbon dioxide in the air. And the softening liquid in the softening liquid pool 33 can flow towards the water curtain spray head 32 through the softening pipeline 36, the softening circulation pump 35 and the softening control valve 37, and then form a water curtain between two adjacent water collection components, so that the lye component in the air after passing through the reaction packing 211 can be effectively removed, avoiding the influence of the lye on other components in the tower barrel 10.

[0046] In some embodiments, the capture assembly 20 further includes a louver 26. The reactor 21 has an air inlet 213, and the louver 26 is arranged at the air inlet 213. When air flows through the louver 26, its flow velocity and direction will be guided and adjusted by the blades of the louver 26, so as to achieve uniform distribution of air flow rate and precise control of direction. And the louver 26 can also effectively block external sundries and dust from entering the reactor 21, thereby reducing the pollution and wear inside the reactor 21 and extending the service life of the assembly.

[0047] In some embodiments, the indirect air cooling tower further includes a heat exchanger 11. The heat exchanger 11 is arranged on the tower barrel 10, and the heat exchanger 11 is located above the air inlet 213 of the tower barrel 10. The heat exchanger 11 has a water inlet pipe 111 and a water outlet pipe 112, ensuring that the air can first perform sufficient heat exchange with the heat exchanger 11 after entering the tower barrel 10, and improving the cooling efficiency of the indirect air cooling tower.

[0048] Furthermore, the heat exchanger 11 includes a pipe body and a plurality of fins. The plurality of fins are arranged on the pipe body at equal intervals. Among them, the fins can increase the heat transfer area and disturb the air flow, effectively improving the heat exchange rate between the air and the circulating water in the pipe body. When air flows through the fins, it will be disturbed by the fins, thereby increasing the contact time and contact area with the fin surface, which helps to transfer the heat in the air to the fins faster and then transfer it to the circulating water in the pipe body through the fins.

[0049] In some embodiments, the indirect air cooling tower further includes a dry-wet operation component. The dry-wet operation component includes a first pipeline 41, a second pipeline 42, and a plurality of dry-wet control valves 43. The two ends of the first pipeline 41 are correspondingly connected to the water inlet pipe 111 and the first packing spray head 212, and the two ends of the second pipeline 42 are correspondingly connected to the water outlet pipe 112 and the reactor 21. The plurality of dry-wet control valves 43 are respectively arranged on the first pipeline 41 and the second pipeline 42, and the dry-wet control valves 43 are used to control the on-off of the first pipeline 41 and the second pipeline 42.

[0050] Specifically, the indirect air cooling tower has a dry operation mechanism and a wet operation mechanism. During the operation of the indirect air cooling tower, the adjustment between the dry operation mechanism and the wet operation mechanism can be achieved through the dry-wet control valves 43. When the indirect air cooling tower is in the wet operation mechanism, the dry-wet control valves 43 on the first pipeline 41 and the second pipeline 42 are both open, so that the heat exchange water at the water inlet pipe 111 of the heat exchanger 11 flows through the first pipeline 41 to the first packing spray head 212 to humidify the air entering the tower barrel 10, and then returns to the water outlet pipe 112 of the heat exchanger 11 through the second pipeline 42. When the indirect air cooling tower is in the dry operation mechanism, the dry-wet control valves 43 on the first pipeline 41 and the second pipeline 42 are both closed, and the air enters the tower barrel 10 through the trapping component 20 and the softening component 30 for heat exchange with the heat exchanger 11.

[0051] In this embodiment, one end of the first pipeline 41 can be connected to the water inlet pipe 111, and the other end of the first pipeline 41 is connected to the fluid circulation pump 23, so that the fluid in the water inlet pipe 111 can flow through the fluid circulation pump 23 to the first packing spray head 212, which helps to increase the flow rate of the fluid in the water inlet pipe 111 flowing to the first packing spray head 212.

[0052] In some embodiments, the indirect air cooling tower further includes a precooling operation component. The precooling operation component includes a third pipeline 51, a fourth pipeline 52, and a plurality of precooling control valves 53. The two ends of the third pipeline 51 are correspondingly connected to the first packing spray head 212 and the softening liquid pool 33, and the two ends of the fourth pipeline 52 are correspondingly connected to the softening liquid pool 33 and the reactor 21. The plurality of precooling control valves 53 are respectively arranged on the third pipeline 51 and the fourth pipeline 52, and the precooling control valves 53 are used to control the on-off of the third pipeline 51 and the fourth pipeline 52.

[0053] That is to say, the indirect air cooling tower has a precooling operation mechanism. Under the precooling operation mechanism, the precooling control valve 53 is open, and the softened water in the softened liquid pool 33 can be transported to the first packing spray head 212 through the third pipeline 51, so that the air entering the tower barrel 10 has an increased humidity and a decreased temperature after passing through the reactor 21. Then, the softened water in the reactor 21 can flow into the softened liquid pool 33 through the fourth pipeline 52, realizing the circulation of the softened water, thereby improving the cooling efficiency of the indirect air cooling tower. That is, the first packing spray head 212 can spray the corresponding fluid under different operation mechanisms. For example, when the indirect air cooling tower has a carbon dioxide capture mechanism, the first packing spray head 212 can spray the lye; when the indirect air cooling tower has a wet operation mechanism, the first packing spray head 212 can correspondingly spray the circulating water in the heat exchanger 11; when the indirect air cooling tower has a precooling operation mechanism, the first packing spray head 212 can correspondingly spray the softened water.

[0054] Furthermore, one end of the third pipeline 51 can be connected to the softened liquid pool 33, and the other end of the third pipeline 51 can be connected to the fluid circulation pump 23, so that the liquid in the softened liquid pool 33 flows towards the first packing spray head 212 after being pressurized, which helps to improve the spraying speed of the first packing spray head 212.

[0055] In some embodiments, the indirect air cooling tower further includes a flue gas filtration assembly 60. The flue gas filtration assembly 60 includes a housing 61, an absorption packing 62, a second packing spray head 63 and a water collector 64. The housing 61 has a flue gas inlet 611 and a flue gas outlet 612. The absorption packing 62 and the water collector 64 are sequentially arranged between the flue gas inlet 611 and the flue gas outlet 612. The second packing spray head 63 is connected to the lye pool 22, and the second packing spray head 63 has a second spray opening, and the second spray opening is arranged towards the absorption packing 62.

[0056] Specifically, the absorption packing 62 is made of a highly efficient porous medium material. The surface structure of the absorption packing 62 can increase the contact area with the flue gas, so as to more effectively capture and absorb pollutants such as carbon dioxide in the flue gas. Then, the flue gas passing through the absorption packing 62 passes through the water collector 64, realizing the collection and removal of the water vapor in the flue gas, ensuring the dryness of the discharged flue gas, and preventing the problem of secondary pollution caused by water carry - over.

[0057] And the second packing spray head 63 connected to the lye pool 22 has a second spray opening, which can evenly spray the lye onto the absorption packing 62. The lye reacts chemically with the acidic gas (such as carbon dioxide) in the flue gas, realizing efficient neutralization and absorption, not only improving the efficiency of flue gas purification, but also ensuring the effective utilization of the lye and reducing the waste of chemicals.

[0058] That is to say, the indirect air cooling tower also has a separate flue gas filtration mechanism, which can effectively filter carbon dioxide in the flue gas of thermal power plants, reduce the negative impact of flue gas emissions on the environment, and avoid the occurrence of secondary pollution. In this embodiment, the water collector 64 can be set to have the same structure as the above-mentioned water collection component 34, that is, the structure and corresponding effects of the water collector 64 can refer to the water collection component 34 in the above embodiment.

[0059] It should be noted that the indirect air cooling tower with carbon dioxide capture function provided in this embodiment can select at least one of a carbon dioxide capture mechanism, a dry operation mechanism, a wet operation mechanism, a precooling operation mechanism, and a flue gas filtration mechanism according to needs.

[0060] Furthermore, the flue gas filtration assembly 60 further includes a fan 65. The fan 65 is arranged at the flue gas outlet 612 of the housing 61, and the fan 65 can accelerate the flow of flue gas in the housing 61. In this embodiment, the housing 61 is arranged above the alkali liquor tank 22. In addition, the alkali liquor tank 22 in the flue gas filtration assembly 60 can be set separately or can share the alkali liquor tank 22 in the above-mentioned capture assembly 20.

[0061] In this embodiment, the flue gas filtration assembly 60 further includes an alkali liquor circulation pump 66 and a connecting pipeline 67. The two ends of the connecting pipeline 67 are correspondingly connected to the alkali liquor tank 22 and the second spray head. The alkali liquor circulation pump 66 is arranged on the connecting pipeline 67, and the alkali liquor circulation pump 66 is used to make the flowing alkali liquor in the alkali liquor tank 22 flow through the connecting pipeline 67 to the second spray head.

[0062] When the alkali liquor circulation pump 66 is started, the alkali liquor circulation pump 66 will generate a strong suction force to suck the alkali liquor in the alkali liquor tank 22 into the pump body, and then transport it to the second spray head through the connecting pipeline 67. At the second spray head, the alkali liquor will be evenly sprayed on the absorption filler 62 to chemically react or physically adsorb with the pollutants in the flue gas, thereby realizing the purification of the flue gas. As the reaction progresses, the effective components in the alkali liquor will gradually be consumed. At this time, the purified flue gas will carry some alkali liquor droplets into the water collector 64, and the remaining alkali liquor will return to the alkali liquor tank 22 through a specific reflux mechanism for regeneration or supplementation.

[0063] Furthermore, the flue gas filtration assembly 60 further includes an alkali liquor control valve 68. The alkali liquor control valve 68 is arranged on the connecting pipeline 67, and the alkali liquor control valve 68 is used to control the on-off of the connecting pipeline 67. When the indirect air cooling tower starts the flue gas filtration mechanism, start the alkali liquor circulation pump 66 and open the alkali liquor control valve 68 to open the connecting pipeline 67 to allow the alkali liquor to flow smoothly from the alkali liquor tank 22 to the second spray head. On the contrary, the alkali liquor control valve 68 will close the connecting pipeline 67 to cut off the flow of the alkali liquor, thereby avoiding unnecessary waste and potential safety risks.

[0064] In some embodiments, the flue gas filtration assembly 60 further includes a flow meter 69 disposed on the connecting pipeline 67. The flow meter 69 is used to monitor the fluid flow passing through the connecting pipeline 67, thereby enhancing the monitoring ability of the fluid flow and enabling the operator to obtain key data on the fluid flow in real time. Through these data, the operator can better understand the operating state of the system, and thus make more accurate operation adjustments and maintenance to ensure the continuous and efficient operation of the flue gas filtration system.

[0065] Of course, in some embodiments, multiple flow meters 69 may be provided. The flow meters 69 are respectively disposed on the capture pipeline 24 in the capture assembly 20 and the softening pipeline 36 in the softening assembly 30. In this embodiment, three flow meters 69 are provided, and the three flow meters 69 are respectively disposed on the connecting pipeline 67, the capture pipeline 24, and the softening pipeline 36.

[0066] In addition, an embodiment of the present invention further provides a thermal power plant cooling system, which includes the indirect air cooling tower with carbon dioxide capture function provided in any of the above embodiments. It should be noted that the implementation principle and the technical effects generated by the thermal power plant cooling system provided in the embodiments of this application are the same as those of the embodiments of the indirect air cooling tower with carbon dioxide capture function described above. For the sake of brief description, for the parts not mentioned in the device embodiment, reference may be made to the relevant content in the aforementioned indirect air cooling tower with carbon dioxide capture function.

[0067] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0068] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0069] In the present invention, unless otherwise clearly specified or limited, the terms "mounted", "connected", "coupled", "fixed", etc. shall be construed broadly. For example, it may be a fixed connection, a detachable connection, or an integral body; it may be a mechanical connection, an electrical connection, or a communication with each other; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0070] In the present invention, unless otherwise clearly specified or limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely means that the horizontal height of the first feature is less than that of the second feature.

[0071] In the present invention, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0072] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. An indirect air cooling tower with carbon dioxide capture function, characterized in that: It includes a tower, a capture component and a softening component. The capture component includes a reactor and an alkali liquid pool. The reactor includes a reaction filler and a first filler nozzle. The first filler nozzle has a first spray port, and the first spray port is arranged toward the reaction filler. The first filler nozzle is connected to the alkali liquid pool; the softening component includes a washer, a water curtain nozzle and a softening liquid pool. The washer is provided with a water collecting component. The reactor and the washer are arranged in sequence along the air inlet direction of the tower. The washer is located at the rear side of the reactor in the air inlet direction of the tower. The water curtain nozzle is connected to the softening liquid pool. The water curtain nozzle is arranged in the washer and is used to form a water curtain in the washer.

2. The indirect air cooling tower with carbon dioxide capture function according to claim 1, characterized in that: There are multiple water collecting components, and the water curtain nozzle is arranged between two adjacent water collecting components. The water curtain nozzle is used to form a water curtain between two adjacent water collecting components with the softening liquid in the softening liquid pool.

3. The indirect air cooling tower with carbon dioxide capture function according to claim 2, characterized in that: The water collecting component includes an arc-shaped plate and a plurality of hook-shaped ribs. The cross-section of the arc-shaped plate is W-shaped. The arc-shaped plate has a plurality of bending sections. The plurality of hook-shaped ribs are correspondingly arranged in the bending sections, and the hook-shaped ribs extend along the longitudinal direction of the arc-shaped plate.

4. The indirect air cooling tower with carbon dioxide capture function according to claim 1, characterized in that: It also includes a heat exchanger and a dry-wet operation component, the heat exchanger has an inlet pipe and an outlet pipe, the dry-wet operation component includes a first pipeline, a second pipeline and a plurality of dry-wet control valves, the two ends of the first pipeline are correspondingly connected to the inlet pipe and the first filling nozzle, the two ends of the second pipeline are correspondingly connected to the outlet pipe and the reactor, the plurality of dry-wet control valves are respectively arranged on the first pipeline and the second pipeline, and the dry-wet control valves are used to control the on-off of the first pipeline and the second pipeline.

5. The indirect air cooling tower with carbon dioxide capture function according to claim 4, characterized in that: The heat exchanger comprises a tube body and a plurality of fins, wherein the plurality of fins are arranged on the tube body at equal intervals.

6. The indirect air cooling tower with carbon dioxide capture function according to claim 1, characterized in that: It also includes a pre-cooling operation component, which includes a third pipeline, a fourth pipeline and a plurality of pre-cooling control valves. The two ends of the third pipeline are correspondingly connected to the first filling nozzle and the softening liquid pool, and the two ends of the fourth pipeline are correspondingly connected to the softening liquid pool and the reactor. The plurality of pre-cooling control valves are respectively arranged on the third pipeline and the fourth pipeline, and the pre-cooling control valves are used to control the on-off of the third pipeline and the fourth pipeline.

7. The indirect air cooling tower with carbon dioxide capture function according to claim 1, characterized in that: It also includes a smoke filter component, which includes a shell, an absorption filler, a second filler nozzle and a water collector. The shell has a smoke inlet and a smoke outlet. The absorption filler and the water collector are arranged between the smoke inlet and the smoke outlet in sequence. The second filler nozzle is connected to the alkali solution pool. The second filler nozzle has a second spray port, and the second spray port is arranged toward the absorption filler.

8. The indirect air cooling tower with carbon dioxide capture function according to claim 7, characterized in that: The smoke filter assembly also includes an alkali liquid circulation pump and a connecting pipeline, the two ends of the connecting pipeline are correspondingly connected to the alkali liquid pool and the second spray head, the alkali liquid circulation pump is arranged on the connecting pipeline, and the alkali liquid circulation pump is used to flow the alkali liquid in the alkali liquid pool to the second spray head through the connecting pipeline.

9. The indirect air cooling tower with carbon dioxide capture function according to claim 1, characterized in that: The capture assembly further includes a fluid circulation pump, and the fluid circulation pump is used to spray the fluid toward the reaction filler through the first spray port on the first spray head; And / or, the softening component further comprises a softening circulation pump, and the softening circulation pump is used to flow the softened liquid in the softening liquid pool to the water curtain nozzle; And / or, the capture assembly further comprises a shutter, the reactor has an air inlet, and the shutter is arranged at the air inlet.

10. A thermal power plant cooling system, characterized in that: An indirect air cooling tower with carbon dioxide capture function comprising any one of claims 1 to 9.

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