Absorption tower

Abstract

This invention provides an absorption tower, comprising: a tower body having an air inlet, an air outlet, and a cavity communicating with both the air inlet and the air outlet, the air inlet being located below the air outlet; an electrostatic precipitator and a dry bed, both disposed within the cavity; a concentration detection element disposed within the cavity, used to detect the concentration of flue gas components within the cavity; and a control element connected to both the electrostatic precipitator and the dry bed, the control element adjusting the operating parameters of the electrostatic precipitator and / or the operating parameters of the dry bed based on the concentration detected by the concentration detection element. The technical solution provided by this invention solves the technical problem of high costs caused by the need to add large amounts of water, acid, or additives to existing absorption towers.

Description

Technical Field

[0001] This invention relates to the field of absorption tower technology, and more specifically, to an absorption tower. Background Technology

[0002] Currently, amine escape from absorption towers is a significant environmental and industrial problem. Amines are volatile organic compounds (VOCs), and their emissions not only lead to absorbent loss and increased system operating costs but also pose potential hazards to the environment and human health. Conventional methods for treating amine escape from absorption towers in existing technologies include: Water washing: Installing a water washing tower at the absorption tower outlet allows for thorough contact between the flue gas and water via spraying, absorbing the volatilized amines in the gas phase. Water washing effectively captures escaped amines, but may require multi-stage washing to achieve high capture efficiency; Acid washing: Using acidic solutions instead of water for washing can improve amine absorption efficiency, especially suitable for highly volatile amines. Acid washing can reduce the concentration of amines escaping into the flue gas, but may involve additional acid consumption and treatment costs; Additive method: Adding specific chemicals, such as alcohols, alkanolamines, and inorganic salts, to the absorbent liquid to reduce the volatility of amines. Additives can reduce the concentration of free amines in the liquid phase by forming hydrogen bonds or complexes, thereby inhibiting amine volatilization and escape.

[0003] However, all of these methods require sufficient water, acid, or additives, and are relatively expensive and inconvenient to operate, making the internal structure of the absorption tower complex and costly. Summary of the Invention

[0004] The main objective of this invention is to provide an absorption tower that solves the technical problem that existing absorption towers often require the addition of large amounts of water, acid, or additives, resulting in high costs.

[0005] To achieve the above objectives, the present invention provides an absorption tower, comprising:

[0006] The tower body has an air inlet, an air outlet, and a cavity that communicates with both the air inlet and the air outlet. The air inlet is located below the air outlet.

[0007] Both the electrostatic precipitator and the dry bed are housed within the cavity;

[0008] A concentration detection device is installed inside the cavity and is used to detect the concentration of flue gas components inside the cavity.

[0009] The control unit connects the electrostatic precipitator and the dry bed to the control unit, which adjusts the operating parameters of the electrostatic precipitator and / or the dry bed based on the concentration detected by the concentration detector.

[0010] Furthermore, the electrostatic precipitator adsorbs the flue gas inside the chamber through the generated electrostatic field. The dry bed includes a motor and a fan, with the motor driving the fan. The control unit adjusts the voltage of the electrostatic field of the electrostatic precipitator and / or the operating frequency of the motor of the dry bed.

[0011] Furthermore, the electrostatic precipitator is positioned above the dry bed, and the concentration detection element includes a first detection unit and a second detection unit. The first detection unit is positioned on the side of the dry bed closer to the electrostatic precipitator, and the second detection unit is positioned on the side of the electrostatic precipitator closer to the outlet. The control unit adjusts the voltage of the electrostatic field and / or the operating frequency of the dry bed motor based on the concentration values ​​detected by the first and second detection units.

[0012] Furthermore, when the concentration value detected by the second detection unit is less than the concentration value detected by the first detection unit, and the difference between the concentration values ​​detected by the second detection unit and the first detection unit is within a preset difference range, the control unit controls the dry bed to run and controls the electrostatic precipitator to stop running; when the concentration value detected by the second detection unit is less than the concentration value detected by the first detection unit, and the difference between the concentration values ​​detected by the second detection unit and the first detection unit exceeds the preset difference range, the control unit controls both the dry bed and the electrostatic precipitator to run; when the concentration value detected by the second detection unit is greater than the concentration value detected by the first detection unit, the voltage of the electrostatic field is increased and / or the operating frequency of the motor is increased.

[0013] Furthermore, the absorption tower also includes:

[0014] The weight detection device is located below the electrostatic precipitator and is used to detect the weight of the electrostatic precipitator.

[0015] The striking element is movable or vibratory and mounted on the electrostatic precipitator.

[0016] The collection component is located below the electrostatic precipitator, with its collection trough facing the electrostatic precipitator.

[0017] The weight detection component and the tapping component are both connected to the control component. The control component controls the tapping component to tap the electrostatic precipitator based on the detection of the weight detection component, so as to collect the dust falling from the electrostatic precipitator through the collection component.

[0018] Furthermore, when the weight detection device detects that the weight of the electrostatic precipitator is greater than the preset weight, the control device controls the electrostatic precipitator to stop working and controls the beater to beat the electrostatic precipitator so that the dust falling on the electrostatic precipitator can be collected by the collector; when the weight detection device detects that the weight of the electrostatic precipitator is less than or equal to the preset weight, the control device controls the electrostatic precipitator to run and the beater to stop working.

[0019] Furthermore, the tower body is provided with a clearance opening, and the collecting component has a dust outlet. The collecting component is rotatably configured to move to the dust collection position and the dust outlet position. When the collecting component is in the dust collection position, the collecting component is placed inside the cavity, and the outer wall of the collecting component blocks the clearance opening. When the collecting component is in the dust outlet position, at least a portion of the collecting component extends out of the clearance opening so that the dust outlet extends out of the tower body.

[0020] Furthermore, the dust outlet is located at the lowest point of the bottom wall of the collecting component; a baffle is provided at the collection trough of the collecting component, which partially blocks the collection trough and is positioned opposite to the dust outlet; wherein, when the collecting component is in the dust outlet position, the baffle and the bottom plate of the collecting component are engaged at the clearance opening to block the clearance opening.

[0021] Furthermore, the absorption tower also includes:

[0022] A driving component, connected to the collecting component, drives the collecting component to rotate; the driving component is also connected to a control component, which controls the operation of the driving component based on the number of times the tapping component operates; when the number of tapping operations exceeds a preset number, the control component controls the driving component to move to the dust discharge position; and / or,

[0023] A blocking plate is movably mounted on the collecting component. The blocking plate has a blocking position for blocking the dust outlet or a avoidance position for avoiding the dust outlet. When the collecting component is in the dust collecting position, the blocking plate is in the blocking position; when the collecting component is in the dust discharging position, the blocking plate is in the avoidance position.

[0024] Furthermore, the absorption tower also includes:

[0025] A heat exchanger is disposed between the dry bed and the electrostatic precipitator.

[0026] By applying the technical solution of this invention, through the structure of electrostatic precipitator combined with dry bed and heat exchanger, no additional water, acid, or additives are required. This not only improves dust removal efficiency but also effectively reduces energy consumption. Furthermore, the structure in this embodiment allows for flexible adjustment of the operating parameters of the electrostatic precipitator and / or the dry bed based on the concentration of flue gas components within the chamber. This enables adaptive adjustments according to actual needs, and through precise control, further reduction of energy consumption can be achieved while ensuring effective dust removal. Attached Figure Description

[0027] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0028] Figure 1A schematic diagram of the structure of an absorption tower provided according to an embodiment of the present invention is shown.

[0029] The above figures include the following reference numerals:

[0030] 10. Tower body; 11. Air inlet; 12. Air outlet; 13. Cavity;

[0031] 20. Dry bed; 30. Heat exchanger; 40. Electrostatic precipitator;

[0032] 50. Concentration detection component; 51. First detection section; 52. Second detection section; 60. Collection component; 70. Weight detection component; 80. Beating component. Detailed Implementation

[0033] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0034] like Figure 1 As shown, an embodiment of the present invention provides an absorption tower, which includes: a tower body 10, an electrostatic precipitator 40, a dry bed 20, a concentration detection element 50, and a control element. The tower body 10 has an air inlet 11, an air outlet 12, and a cavity 13 communicating with both the air inlet 11 and the air outlet 12. The air inlet 11 is located below the air outlet 12. The electrostatic precipitator 40 and the dry bed 20 are both disposed within the cavity 13. The concentration detection element 50 is disposed within the cavity 13 and is used to detect the concentration of flue gas components within the cavity 13. The electrostatic precipitator 40 and the dry bed 20 are both connected to the control element, which adjusts the operating parameters of the electrostatic precipitator 40 and / or the operating parameters of the dry bed 20 based on the concentration detected by the concentration detection element 50.

[0035] The absorption tower provided in this embodiment, with its structure combining electrostatic precipitator, dry bed 20, and heat exchanger 30, eliminates the need for additional water, acid, or additives. This not only improves dust removal efficiency but also effectively reduces energy consumption. Furthermore, the structure in this embodiment allows for flexible adjustment of the operating parameters of the electrostatic precipitator 40 and / or the dry bed 20 based on the concentration of flue gas components within the chamber 13. This enables adaptive adjustments according to actual needs, and through precise control, further reduction in energy consumption can be achieved while maintaining dust removal efficiency. Therefore, the absorption tower provided in this embodiment solves the technical problem of high costs associated with existing absorption towers that often require the addition of large amounts of water, acid, or additives.

[0036] Specifically, the gas inside the absorption tower flows from the inlet 11 to the outlet 12 and then flows out through the outlet 12.

[0037] In this embodiment, the electrostatic precipitator 40 adsorbs the flue gas in the cavity 13 by generating an electrostatic field. The dry bed 20 includes a motor and a fan, with the motor driving the fan to operate. The control unit adjusts the voltage of the electrostatic field of the electrostatic precipitator 40 and / or the operating frequency of the motor of the dry bed 20.

[0038] In this embodiment, the electrostatic precipitator 40 is positioned above the dry bed 20. The concentration detection element 50 includes a first detection unit 51 and a second detection unit 52. The first detection unit 51 is positioned on the side of the dry bed 20 closest to the electrostatic precipitator 40, and the second detection unit 52 is positioned on the side of the electrostatic precipitator 40 closest to the outlet 12. The control unit adjusts the voltage of the electrostatic field and / or the operating frequency of the motor of the dry bed 20 based on the concentration values ​​detected by the first detection unit 51 and the second detection unit 52. This facilitates better adaptive adjustments to the electrostatic precipitator 40 and the dry bed 20.

[0039] Specifically, when the concentration value detected by the second detection unit 52 is less than the concentration value detected by the first detection unit 51, and the difference between the concentration values ​​detected by the second detection unit 52 and the first detection unit 51 is within a preset difference range, the control unit controls the dry bed 20 to run and the electrostatic precipitator 40 to stop running. When the concentration value detected by the second detection unit 52 is less than the concentration value detected by the first detection unit 51, and the difference between the concentration values ​​detected by the second detection unit 52 and the first detection unit 51 exceeds a preset difference range, the control unit controls both the dry bed 20 and the electrostatic precipitator 40 to run. When the concentration value detected by the second detection unit 52 is greater than the concentration value detected by the first detection unit 51, the voltage of the electrostatic field is increased and / or the operating frequency of the motor is increased. This configuration facilitates improved control accuracy of the electrostatic precipitator 40 and the dry bed 20, and better ensures flexibility in regulation.

[0040] Specifically, the absorption tower in this embodiment also includes a particle size detection structure. By detecting the particle size and concentration, the selected outlet can be determined. Only the outlet of the dry bed 20 can be selected for dust removal. The dust can be discharged directly through the dry bed 20, or it can be discharged sequentially through the dry bed 20 and the electrostatic precipitator. This can achieve graded selective dust removal, improve dust removal efficiency, and reduce energy consumption.

[0041] In this embodiment, the absorption tower further includes a weight detection element 70, a beating element 80, and a collecting element 60, all positioned below the electrostatic precipitator 40. The weight detection element 70 is used to detect the weight of the electrostatic precipitator 40. The beating element 80 is movably or vibratingly mounted on the electrostatic precipitator 40. The collecting element 60 is positioned below the electrostatic precipitator 40, with its collection slot facing the electrostatic precipitator 40. Both the weight detection element 70 and the beating element 80 are connected to a control element. The control element controls the beating element 80 to beat the electrostatic precipitator 40 based on the reading from the weight detection element 70, so that the dust falling from the electrostatic precipitator 40 can be collected by the collecting element 60. This structural arrangement facilitates the effective removal of dust from the electrostatic precipitator 40, allowing for better reabsorption of new dust and improving the dust removal efficiency.

[0042] Specifically, when the weight detection element 70 detects that the weight of the electrostatic precipitator 40 is greater than the preset weight, the control element controls the electrostatic precipitator 40 to stop working, and the control element controls the beater element 80 to beat the electrostatic precipitator 40 so that the dust falling from the electrostatic precipitator 40 can be collected by the collecting element 60; when the weight detection element 70 detects that the weight of the electrostatic precipitator 40 is less than or equal to the preset weight, the control element controls the electrostatic precipitator 40 to run and the beater element 80 to stop working. In this way, the beater element 80 can be better controlled, thereby better ensuring the dust removal effect of the electrostatic precipitator 40.

[0043] In this embodiment, the tower body 10 is provided with a clearance opening, and the collecting component 60 has a dust outlet. The collecting component 60 is rotatably configured to move to the dust collection position and the dust outlet position. When the collecting component 60 is in the dust collection position, it is disposed within the cavity 13, and its outer wall blocks the clearance opening. When the collecting component 60 is in the dust outlet position, at least a portion of it extends out of the clearance opening, so that the dust outlet extends outside the tower body 10. This facilitates better collection of dust in the collecting component 60 and prevents it from overflowing when full.

[0044] Specifically, the dust outlet is located at the lowest point of the bottom wall of the collecting component 60; a baffle plate is provided at the collection trough opening of the collecting component 60, which partially blocks the collection trough opening, and the baffle plate is positioned opposite the dust outlet; wherein, when the collecting component 60 is in the dust outlet position, the baffle plate and the bottom plate of the collecting component 60 are engaged at the clearance opening to seal the clearance opening. This structural arrangement facilitates the effective discharge of dust from the collecting component 60.

[0045] In this embodiment, the absorption tower also includes a driving component, which is driven to rotate the collection component 60. The driving component is also connected to a control component, which controls the operation of the driving component based on the number of tapping operations of the agitator 80. When the number of tapping operations of the agitator 80 exceeds a preset number, the control component controls the driving component to move to the dust outlet position. This structural arrangement facilitates better control of the movement of the collection component 60, resulting in better dust collection.

[0046] Specifically, the absorption tower also includes a blocking plate, which is movably mounted on the collecting element 60. The blocking plate has a blocking position for blocking the dust outlet or a clearance position for avoiding the dust outlet. When the collecting element 60 is in the dust collecting position, the blocking plate is in the blocking position to prevent collected dust from falling into the absorption tower; when the collecting element 60 is in the dust outlet position, the blocking plate is in the clearance position. This structural arrangement facilitates dust discharge through the dust outlet when the collecting element 60 is in the dust outlet position.

[0047] In this embodiment, the absorption tower also includes a heat exchanger 30, which is disposed between the dry bed 20 and the electrostatic precipitator 40. This facilitates effective cooling of the flue gas.

[0048] Specifically, in this embodiment, the dry bed 20, heat exchanger 30, electrostatic precipitator 40, concentration detector 50, weight detector 70, beater 80, and collector 60 do not completely block the cross-section of the tower body 10, meaning that the gas inside the tower body 10 can flow smoothly in the direction from the inlet 11 to the outlet 12 within the tower body 10.

[0049] In this embodiment, the periphery of the electrostatic precipitator 40 is adapted to the periphery of the inner wall of the cavity 13. The periphery of the electrostatic precipitator 40 is mounted on the inner wall of the cavity 13, and multiple vent holes are spaced apart on the electrostatic precipitator 40. This facilitates the normal flow of fluid within the cavity 13 and also facilitates stable dust removal of the gas within the flow cavity.

[0050] Specifically, the electrostatic precipitator 40 in this embodiment includes multiple carbon fiber filaments, which are arranged in an interlaced manner to form multiple air vents. This structural arrangement facilitates the stable formation of an electric field, which in turn facilitates the adsorption of large particles of impurities, thereby ensuring the dust removal effect.

[0051] The absorption tower proposed in this solution optimizes the industrial flue gas dust removal process by integrating advanced monitoring technology, intelligent decision-making algorithms, and precise actuators. This setup not only significantly improves dust removal efficiency and reduces energy consumption but also helps reduce equipment wear, extend service life, and ensures emissions consistently meet environmental standards. The absorption tower intelligently determines the most suitable dust removal path by monitoring the particle size and concentration of particulate matter in the flue gas in real time. This flexible dust removal strategy ensures optimal dust removal results under different operating conditions. For low-concentration flue gas, the system can discharge directly, avoiding unnecessary energy waste; for medium-concentration flue gas, the dry bed 20 is sufficient to meet emission requirements; and for high-concentration flue gas, the combination of the dry bed 20 and the electrostatic precipitator ensures highly efficient dust removal. Furthermore, through variable frequency speed control technology and intelligent start-stop strategies, the system can adjust the operating status of the fan and motor according to actual needs, thereby effectively reducing energy consumption. In addition, by precisely controlling the operating parameters of the dry bed 20 and the electrostatic precipitator 40, the system can further reduce energy consumption while ensuring dust removal effectiveness. By ensuring that the quality of emitted flue gas consistently meets environmental standards, the system helps reduce the environmental impact of industrial activities. Furthermore, the system's intelligent decision-making and execution mechanisms can respond promptly to abnormal changes in monitoring data and take appropriate measures to prevent pollutant emissions from exceeding standards.

[0052] In summary, the absorption tower of this application, through its intelligent control strategy, not only improves dust removal efficiency and reduces energy consumption, but also reduces environmental pollution and enhances the economic benefits for enterprises. With increasingly stringent industrial environmental protection requirements and rising energy costs, such a system will have broad application prospects.

[0053] As can be seen from the above description, the embodiments of the present invention achieve the following technical effects: Dust removal is achieved by combining electrostatic precipitator and heat exchanger (finned type), which not only improves the dust removal effect but also reduces energy consumption. The heat exchanger achieves cooling, and then dust removal is performed through a dry bed and electrostatic precipitator.

[0054] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0055] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0056] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0057] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0058] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0059] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An absorption tower, characterized in that, include: The tower body (10) has an air inlet (11), an air outlet (12) and a cavity (13) that communicates with both the air inlet (11) and the air outlet (12), wherein the air inlet (11) is located below the air outlet (12); The electrostatic precipitator (40) and the dry bed (20) are both installed inside the cavity (13); A concentration detection element (50) is disposed inside the cavity (13), and the concentration detection element (50) is used to detect the concentration of flue gas components inside the cavity (13); The control unit is connected to both the electrostatic precipitator (40) and the dry bed (20). The control unit adjusts the operating parameters of the electrostatic precipitator (40) and / or the operating parameters of the dry bed (20) according to the concentration detected by the concentration detector (50). The electrostatic precipitator (40) adsorbs the flue gas in the cavity (13) by generating an electrostatic field. The dry bed (20) includes a motor and a fan, and the motor drives the fan to run. The control unit adjusts the voltage of the electrostatic field of the electrostatic precipitator (40) and / or the operating frequency of the motor of the dry bed (20). The electrostatic precipitator (40) is disposed above the dry bed (20). The concentration detection element (50) includes a first detection part (51) and a second detection part (52). The first detection part (51) is disposed on the side of the dry bed (20) near the electrostatic precipitator (40), and the second detection part (52) is disposed on the side of the electrostatic precipitator (40) near the air outlet (12). The control element adjusts the voltage of the electrostatic field and / or the operating frequency of the motor of the dry bed (20) according to the concentration value detected by the first detection part (51) and the concentration value detected by the second detection part (52).

2. The absorption tower according to claim 1, characterized in that, When the concentration value detected by the second detection unit (52) is less than the concentration value detected by the first detection unit (51), and the difference between the concentration value detected by the second detection unit (52) and the concentration value detected by the first detection unit (51) is within a preset difference range, the control unit controls the dry bed (20) to run and controls the electrostatic precipitator (40) to stop running; when the concentration value detected by the second detection unit (52) is less than the concentration value detected by the first detection unit (51), and the difference between the concentration value detected by the second detection unit (52) and the concentration value detected by the first detection unit (51) exceeds a preset difference range, the control unit controls both the dry bed (20) and the electrostatic precipitator (40) to run; when the concentration detected by the second detection unit (52) is greater than the concentration value detected by the first detection unit (51), the voltage of the electrostatic field is increased and / or the operating frequency of the motor is increased.

3. The absorption tower according to claim 1, characterized in that, The absorption tower also includes: A weight detection element (70) is disposed below the electrostatic precipitator (40), and the weight detection element (70) is used to detect the weight of the electrostatic precipitator (40); The beater (80) is movably or vibratingly mounted on the electrostatic precipitator (40); A collection component (60) is disposed below the electrostatic precipitator (40), with the collection slot of the collection component (60) facing the electrostatic precipitator (40); The weight detection component (70) and the tapping component (80) are both connected to the control component. The control component controls the tapping component (80) to tap the electrostatic precipitator (40) according to the detection of the weight detection component (70), so as to collect the dust falling on the electrostatic precipitator (40) through the collecting component (60).

4. The absorption tower according to claim 3, characterized in that, When the weight detection device (70) detects that the weight of the electrostatic precipitator (40) is greater than the preset weight, the control device controls the electrostatic precipitator (40) to stop working and controls the beater (80) to beat the electrostatic precipitator (40) so that the dust falling on the electrostatic precipitator (40) can be collected by the collector (60); when the weight detection device (70) detects that the weight of the electrostatic precipitator (40) is less than or equal to the preset weight, the control device controls the electrostatic precipitator (40) to run and the beater (80) to stop working.

5. The absorption tower according to claim 3, characterized in that, The tower body (10) is provided with an avoidance opening, and the collecting component (60) has a dust outlet. The collecting component (60) is rotatably arranged to move to the dust collection position and the dust outlet position. When the collecting component (60) is in the dust collection position, the collecting component (60) is arranged in the cavity (13), and the outer wall of the collecting component (60) blocks the avoidance opening. When the collecting component (60) is in the dust outlet position, at least a portion of the collecting component (60) extends out of the avoidance opening so that the dust outlet extends out of the tower body (10).

6. The absorption tower according to claim 5, characterized in that, The dust outlet is located at the lowest position of the bottom wall of the collecting component (60); a baffle is provided at the collection slot of the collecting component (60), the baffle partially blocks the collection slot, and the baffle is arranged opposite to the dust outlet; wherein, when the collecting component (60) is in the dust outlet position, the baffle and the bottom plate of the collecting component (60) are engaged at the avoidance opening to block the avoidance opening.

7. The absorption tower according to claim 5, characterized in that, The absorption tower also includes: A driving component is connected to the collecting component (60) and drives the collecting component (60) to rotate; the driving component is connected to the control component, and the control component controls the operation of the driving component according to the number of times the tapping component (80) taps; when the number of tapping components (80) taps exceeds a preset number, the control component controls the driving component to move to the dust outlet position; and / or, A blocking plate is movably disposed on the collecting member (60). The blocking plate has a blocking position for blocking the dust outlet or a avoidance position for avoiding the dust outlet. When the collecting member (60) is in the dust collecting position, the blocking plate is in the blocking position. When the collecting member (60) is in the dust outlet position, the blocking plate is in the avoidance position.

8. The absorption tower according to any one of claims 1 to 7, characterized in that, The absorption tower also includes: A heat exchanger (30) is disposed between the dry bed (20) and the electrostatic precipitator (40).

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