Washing dust removal tower

Abstract

The utility model relates to a washing dust removal tower which comprises a tower body, a gas inlet located in the bottom of the tower body and a gas outlet located in the top of the tower body. A water storage layer, a first-stage spraying layer, a filler washing layer and a filler demisting layer are sequentially arranged in the tower body from bottom to top, and the tower is characterized in that a first-stage spraying pipe for spraying from top to bottom is arranged in the first-stage spraying layer and is communicated with the water storage layer through a circulating pipeline; the primary shower layer is shaped such that the primary shower layer has an increased cross-sectional area and a reduced height without changing the volume compared to the original primary shower layer. The height of the equipment structure is reduced, so that the washing dust removal tower can be used in a part of space-limited areas while the dust removal efficiency is ensured.

Description

Technical Field

[0001] The present disclosure relates to equipment for dust control processes, and in particular to a water-washing dust removal tower. Background Art

[0002] A water-washing dust removal system uses water or other liquids to contact dust-laden air, removing dust particles and gaseous pollutants through physical and chemical reactions. The system operates by introducing dust-laden air into the system. A fine water mist generated by a spray system then contacts the air, adsorbing the dust particles and causing them to settle. This process effectively removes liquid and solid particles with diameters ranging from 0.1 to 20 microns from the airflow, while also removing some gaseous pollutants.

[0003] During construction and operation, cigarette factories must strictly adhere to environmental regulations and standards, including those regarding waste gas emissions. Therefore, water-washing dust removal technology, as an effective waste gas treatment method, is widely used in cigarette factories to reduce atmospheric pollutant emissions. This technology can reduce the content of harmful substances in waste gas, such as ammonia escape mass concentration and droplet mass concentration, to meet design specifications, significantly improving flue gas tailing.

[0004] Vertical water-washing dust removal towers are commonly used in cigarette factories. Exhaust gas is introduced into the tower via an air duct. As the exhaust gas passes through the packing layer, it comes into contact with an aqueous solution (typically an alkaline solution such as sodium hydroxide), causing pollutants to be adsorbed or dissolved into the water. Treated liquid waste is discharged through a bottom drainage system, while treated exhaust gas is discharged into the atmosphere through an exhaust duct, achieving its purification goal.

[0005] However, conventional vertical water-washing dust removal towers are typically over six meters tall. Consequently, routine maintenance and packing cleaning are cumbersome. Furthermore, these vertical water-washing dust removal towers require high spray heads, requiring high-power pumps and resulting in high energy consumption.

[0006] Furthermore, in areas prone to typhoons, vertical water-washing dust removal towers can be damaged by weather and other factors, so their height is restricted. In particular, in cigarette factories, vertical water-washing dust removal towers are often installed on factory roofs, making them more susceptible to typhoons and other weather conditions, thus further restricting their height. Utility Model Content

[0007] In order to solve the shortcomings of the prior art, the present disclosure provides a water-washing dust removal tower, which can have a lower structural height while ensuring dust removal efficiency.

[0008] According to the present disclosure, a water-washing dust removal tower is proposed, comprising a tower body, an air inlet at the bottom of the tower body, and an air outlet at the top of the tower body; a water storage layer, a primary spray layer, a filler washing layer, and a filler demisting layer are sequentially arranged inside the tower body from bottom to top, and is characterized in that a primary spray pipe for spraying from top to bottom is arranged in the primary spray layer, and the primary spray pipe is connected to the water storage layer through a circulation pipeline; the primary spray layer is shaped so that the primary spray layer has an increased cross-sectional area and a decreased height compared with the original primary spray layer under the condition of unchanged volume.

[0009] Therefore, compared to the existing primary spray layer or the existing water-washing dust removal tower, the water-washing dust removal tower according to the present disclosure achieves a lower structural height by increasing the cross-sectional area. As a result, the water-washing dust removal tower according to the present disclosure can be used in areas with limited space while ensuring dust removal efficiency. Furthermore, since the structural height of the entire water-washing dust removal tower is reduced, not only can the water-washing spray height of the equipment be lowered, the water pump head can be adjusted, thereby reducing energy consumption, but it also facilitates maintenance.

[0010] In other words, the water-washing dust-removing tower disclosed in the present invention realizes a flattened vertical water-washing dust-removing tower, for example, making it have a height comparable to that of a conventional horizontal water-washing dust-removing tower, which not only reduces the height of the equipment and avoids the influence of limited space in some areas, but also greatly reduces the empty tower flow rate, reduces water vapor escape, adjusts the spraying height, reduces the water pump head, and reduces energy consumption losses.

[0011] In some embodiments, while maintaining the same volume, the height of the first-stage spray layer is equal to or less than half the height of the original first-stage spray layer, thereby significantly reducing the structural height of the entire water-washing dust removal tower.

[0012] In some embodiments, a secondary spray layer is provided between the packing washing layer and the packing demisting layer. A secondary spray pipe for spraying downward from top to bottom is provided within the secondary spray layer. This secondary spray pipe is also connected to the water storage layer via a circulation pipeline. This creates a two-stage vertical water-washing dust removal tower, thereby increasing the dust removal capacity of the water-washing dust removal tower.

[0013] In some embodiments, the secondary spray layer is shaped to have an increased cross-sectional area and a reduced height compared to the original secondary spray layer, while maintaining the same volume. In this regard, in some embodiments, while maintaining the same volume, the height of the secondary spray layer is equal to or less than half the height of the original secondary spray layer. This reduces the height of the equipment while ensuring dust removal efficiency, making the water-wash dust removal tower suitable for use in environments with height restrictions.

[0014] In some embodiments, the cross-sectional area of ​​the entire water-wash dust removal tower increases as the cross-sectional area of ​​the primary spray layer increases, so that the cross-sectional area of ​​the water-wash dust removal tower is equal to the cross-sectional area of ​​the primary spray layer. In this way, a flattened primary spray layer can be easily achieved.

[0015] In some embodiments, a packing support plate is provided at the bottom of the packing washing layer, the packing is placed in a random pile on the support plate, and a packing pressure plate is provided above the packing, thereby preventing the packing from being blown away by the rising airflow.

[0016] In some embodiments, the gas outlet is located on the top of the tower body above the filler demisting layer, and an outlet hood is provided on the gas outlet, thereby facilitating the discharge of gas and achieving air flow buffering.

[0017] In some embodiments, a filtering device is provided in the water reservoir, thereby filtering solid waste in the water.

[0018] In some embodiments, a first discharge port is provided on the packing washing layer and / or a second discharge port is provided on the packing demisting layer, thereby enabling packing replacement.

[0019] In some embodiments, a first inspection hole is provided on the primary spray layer, thereby enabling inspection and maintenance of the water-washing dust removal tower.

[0020] In some embodiments, a second inspection hole is provided on the secondary spray layer, thereby enabling inspection and maintenance of the water-washing dust removal tower.

[0021] In some embodiments, the gas outlet is located on the extension portion connected to the filler demisting layer and faces vertically downward, and a U-shaped chimney can be connected to the vertically downward gas outlet, so that the exhausted gas can flow downward first and then upward, thereby facilitating further gas-liquid separation.

[0022] In addition, the present disclosure also provides a method for operating the water-washing dust removal tower according to the present disclosure as described above, characterized in that the method includes the following steps: after the gas to be dusted enters the first-level spray layer through the air inlet, the first-level spray pipe extracts spray liquid from the water storage layer through the circulation system to spray and wash the gas to be dusted; after the gas and liquid are separated by the packing demisting layer, the gas purified by the first-level spray layer flows to the air outlet and is discharged from the air outlet, and the waste liquid flows to the water storage layer after sufficient contact with the packing washing layer and is regularly discharged from the water storage layer.

[0023] In some embodiments, if a secondary spray layer is provided between the packing washing layer and the packing demisting layer, and a secondary spray pipe for spraying from top to bottom is provided in the secondary spray layer, and the secondary spray pipe is also connected to the water storage layer through a circulation pipeline, then the gas to be dusted is purified by the primary spray layer and then purified by the secondary spray layer, and the secondary spray pipe also extracts spray liquid from the water storage layer through the circulation system to spray and wash the gas to be dusted, and the gas purified by the secondary spray layer flows to the air outlet and is discharged from the air outlet.

[0024] The method according to the present disclosure can bring the same advantages as those described with respect to the water-washing dust removal tower according to the present disclosure, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] To make the above-mentioned objects, features, and advantages of the present disclosure more clearly understood, the following detailed description of the specific embodiments of the present disclosure is given in conjunction with the accompanying drawings. The accompanying drawings are only used to illustrate preferred embodiments and are not to be considered as limiting the present disclosure. In addition, the same reference numerals are used throughout the drawings to represent the same components. Some of the drawings may not be shown to scale or may even be exaggerated for illustrative purposes only. In the drawings:

[0026] Figure 1 It is a partially cutaway schematic front view of a water-washing dust removal tower according to an embodiment of the present application;

[0027] Figure 2 for Figure 1 Schematic side view of a water-wash dust removal tower. DETAILED DESCRIPTION

[0028] The following embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0030] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0031] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0032] In the description of the embodiments of this application, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent the following three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0033] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0034] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0035] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0036] As mentioned above, conventional vertical water-washing dust removal towers are typically over six meters tall. Consequently, routine maintenance and packing cleaning are cumbersome. Furthermore, these towers require high spray heads, requiring high-power pumps and resulting in high energy consumption. Furthermore, particularly for cigarette factories, since these towers are typically installed on factory rooftops, they are susceptible to weather conditions such as typhoons, thus limiting their height.

[0037] Therefore, in view of the fact that the existing water-washing dust removal device is height-limited, the concept of the present disclosure is to reduce the structural height of the equipment, while also optimizing the design to ensure that the dust removal efficiency is met and reduce energy consumption.

[0038] For the convenience of explanation, a water-washing dust removal tower according to an embodiment of the present disclosure is used as an example for explanation below.

[0039] Reference Figure 1 and Figure 2 , which respectively show a schematic front view and a side view of an embodiment of a water-washing dust removal tower according to the present disclosure.

[0040] The water-washing dust removal tower according to the embodiment of the present disclosure can be used in situations where height is limited, and can be particularly applied to cigarette factories.

[0041] Especially with reference Figure 1 According to an embodiment of the present disclosure, a water-washing dust removal tower may include a tower body 100, an air inlet 110 located at the bottom of the tower body 100, and an air outlet 120 located at the top of the tower body 100. The air inlet 110 located at the bottom of the tower body 100 can be used to allow dust-laden gas, i.e., unpurified gas, to enter the water-washing dust removal tower, while the air outlet 120 located at the top of the tower body 100 can be used to discharge purified gas from the water-washing dust removal tower, so that the gas flows upward from the bottom of the tower.

[0042] Inside the tower body 100, a water storage layer 200, a primary spray layer 300, a packing scrubbing layer 400, and a packing demisting layer 500 may be sequentially arranged from bottom to top. The water storage layer 200 may be configured to provide spray liquid. The primary spray layer 300 may be configured to spray the spray liquid onto the raw gas. The packing scrubbing layer 400 may be configured to increase the contact area between the raw gas and the circulating spray liquid, ensuring uniform and sufficient contact between the raw gas and the liquid. The packing demisting layer 500 may be configured to separate gas and liquid and also to intercept dust, particulate matter, and / or flocculent matter in the gas.

[0043] A primary spray pipe 310 for downward spraying can be provided in the primary spray layer 300. The water storage layer 200 can be connected to the primary spray pipe 310 of the primary spray layer 300 via a circulation system's circulation pipeline (not shown). Furthermore, the spray liquid can be circulated by a circulation pump (not shown) in the circulation system. Thus, the spray liquid can be sprayed downward from the upper portion of the tower body, thereby countercurrently contacting the gas flowing upward from the bottom of the tower.

[0044] An atomizing nozzle may be installed on the primary spray pipe 310 , through which the spray liquid may be atomized, thereby increasing the contact area between the gas to be dust removed and the spray liquid, so as to achieve a better dust removal effect.

[0045] According to the present disclosure, the primary spray layer 300 can be shaped so that, compared to an existing or conventional primary spray layer (i.e., a prior art primary spray layer not improved according to the present disclosure), it has an increased cross-sectional area and a decreased height while maintaining the same volume. In other words, the primary spray layer 300 can have the same volume as an existing or conventional primary spray layer, but a smaller height and a larger cross-sectional area than the existing or conventional primary spray layer. Thus, the primary spray layer 300 is flattened, and the overall height of the water-washing dust removal tower decreases as the height of the primary spray layer decreases.

[0046] Since the volume of the entire primary spray layer 300 remains unchanged despite the reduction in the height of the primary spray layer 300, the contact area between the gas to be dusted and the spray liquid can remain unchanged while the entry velocity of the gas to be dusted into the primary spray layer 300 remains unchanged, thereby maintaining the dust removal efficiency of the water-wash dust removal tower. Therefore, according to the present disclosure, by increasing the cross-sectional area and reducing the overall equipment height, the equipment height can be reduced while ensuring dust removal efficiency, thereby enabling the water-wash dust removal tower to be used in situations where, for example, the equipment height is limited.

[0047] It should be noted here that the term “original or conventional” refers to a structure before being improved according to the concept of the present disclosure.

[0048] Advantageously, the height of the first spray layer 300 can be equal to or less than half the height of the original or conventional first spray layer while maintaining the same volume, thereby significantly reducing the structural height of the entire water-washing dust removal tower.

[0049] According to some embodiments of the present disclosure, particularly with reference to Figure 1A secondary spray layer 600 may be provided between the packing washing layer 400 and the packing demisting layer 500. A secondary spray pipe 610 for spraying from top to bottom may be provided in the secondary spray layer 600. The secondary spray pipe 610 may also be connected to the water storage layer 200 via a circulation pipeline. This creates a two-stage vertical water-washing dust removal tower, thereby increasing the dust removal capacity of the water-washing dust removal tower.

[0050] Similar to the primary spray pipe 310, the secondary spray pipe 610 also allows the spray liquid to be sprayed downward from the upper portion of the tower, allowing it to interact with the gas flowing upward from the tower bottom. A misting nozzle can also be installed on the secondary spray pipe 610 to atomize the spray liquid, thereby increasing the contact area between the gas to be dusted and the spray liquid, thereby achieving better dust removal results.

[0051] In this regard, it is advantageous that the secondary spray layer 600 can be shaped so that it has an increased cross-sectional area and a reduced height compared to an existing or conventional secondary spray layer while maintaining a constant volume. Furthermore, it is advantageous that the height of the secondary spray layer 600 can be equal to or less than half the height of an existing or conventional secondary spray layer while maintaining a constant volume.

[0052] Therefore, the secondary spray layer 600 is flattened, and the structural height of the entire water-washing dust removal tower decreases as the height of the primary spray layer decreases. As a result, the equipment height can be reduced while ensuring dust removal efficiency, so that the water-washing dust removal tower can be used in situations where the equipment height is limited.

[0053] According to some embodiments of the present disclosure, particularly with reference to Figure 1 The cross-sectional area of ​​the entire water-wash dust removal tower can be increased as the cross-sectional area of ​​the primary spray layer 300 increases, so that the cross-sectional area of ​​the water-wash dust removal tower is equal to the cross-sectional area of ​​the primary spray layer 300. For example, as shown in the figure, the entire water-wash dust removal tower, except for the top, is constructed in a rectangular parallelepiped shape. This allows for a simple flattening of the primary spray layer 300. This is also applicable when there are 600 or more secondary spray layers.

[0054] According to some embodiments of the present disclosure, a packing support plate may be provided at the bottom of the packing washing layer 400 , on which the packing may be placed in a random pile, and a packing pressure plate may be provided above the packing, thereby preventing the packing from being blown away by the rising airflow.

[0055] According to some embodiments of the present disclosure, the gas outlet 120 may be located on the top of the tower body 100 above the filler demisting layer 500, and an outlet hood may be provided on the gas outlet 120 to facilitate the discharge of gas and achieve air flow buffering. In this case, the top of the tower body 100 may be constructed in the shape of a truncated pyramid, such as Figure 2 as shown.

[0056] According to some embodiments of the present disclosure, particularly with reference to Figure 2 A filtering device 210, such as a filter screen, can be provided in the water storage layer 200 for filtering solid waste in the water.

[0057] According to some embodiments of the present disclosure, particularly with reference to Figure 2 A first discharge port 410 can be provided on the filler washing layer 400, and / or a second discharge port 510 can be provided on the filler mist removal layer 500 for filler replacement.

[0058] According to some embodiments of the present disclosure, particularly with reference to Figure 2 A first manhole 320 can be provided on the primary spray layer 300. Similarly, a second manhole 620 can also be provided on the secondary spray layer 600. Thus, maintenance of the water washing dust removal tower can be achieved.

[0059] According to some embodiments of the present disclosure, particularly with reference to Figure 2 As shown, the air inlet 110 can be directly connected to the primary spray layer 300.

[0060] According to some embodiments of the present disclosure, the air outlet 120 can be located on an extension connected to the filler mist removal layer 500 and vertically downward, and a U-shaped chimney can be connected to the vertically downward air outlet, so that the discharged gas can flow downward first and then upward. Thus, further gas-liquid separation can be facilitated. In addition, in this case, the tower top of the tower body 100 can be omitted, so that the filler mist removal layer 500 is the top layer of the tower body 100. Thus, the tower body 100 as a whole can be configured as a cuboid, thereby facilitating the manufacture of the water washing dust removal tower.

[0061] As described above, the water washing dust removal tower according to the present disclosure can be configured as a primary or secondary or more stage water washing dust removal tower. The water washing dust removal tower can utilize circulating water spraying, wherein the tower bottom can be used as a water storage layer. Via a circulating pump and a circulating pipeline of a circulating system, the water storage layer can provide spray liquid to spray pipes of each stage spray layer.

[0062] Therefore, in the operation of the water washing dust removal tower according to the present disclosure, each stage spray pipe extracts supernatant in the water storage layer as spray liquid through the circulating system to spray and wash the gas to be dedusted; after gas-liquid separation through the filler mist removal layer, the purified gas flows to the air outlet and is discharged from the air outlet hood; and the waste liquid flows to the water storage layer after fully contacting with the filler washing layer, to the bottom of the water storage layer through the filtering device of the water storage layer, and can be periodically dispatched to a sewage discharge port through an electric valve. When the corresponding spray pipe fails, maintenance can be performed through the corresponding manhole; and when the corresponding filler needs to be replaced, replacement can be performed through the corresponding discharge port.

[0063] Therefore, according to an embodiment of the present disclosure, a method for operating a water-washing dust removal tower according to the present disclosure is also provided, and the method may include the following steps: after the gas to be dusted enters the first-level spray layer 300 through the air inlet 110, the first-level spray pipe 310 extracts spray liquid from the water storage layer 200 through the circulation system to spray and wash the gas to be dusted; after passing through the packing demisting layer 500 for gas-liquid separation, the gas purified by the first-level spray layer 300 flows to the air outlet 120 and is discharged from the air outlet 120, and the waste liquid flows to the water storage layer 200 after sufficient contact with the packing washing layer 400 and is regularly discharged from the water storage layer 200.

[0064] According to some embodiments of the present disclosure, if a secondary spray layer 600 is provided between the packing washing layer 400 and the packing demisting layer 500, and a secondary spray pipe 610 for spraying from top to bottom is provided in the secondary spray layer 600, and the secondary spray pipe 610 is also connected to the water storage layer 200 through a circulation pipeline, then the gas to be dusted can be purified by the secondary spray layer 600 after being purified by the primary spray layer 300. The secondary spray pipe 610 also extracts spray liquid from the water storage layer 200 through the circulation system to spray and wash the gas to be dusted, and the gas purified by the secondary spray layer 600 flows to the gas outlet 120 and is discharged from the gas outlet 120.

[0065] The water inlet and outlet valves for the aquifer are controlled by a PLC. The frequency of water changes can be adjusted based on actual conditions during operation. Furthermore, manual control valves are installed for both the inlet and outlet valves to facilitate temporary operations such as maintenance.

[0066] In summary, the present disclosure reduces the overall equipment height by increasing the cross-sectional area, thereby ensuring dust removal efficiency while enabling the water-wash dust removal tower of the present disclosure to be used in situations where height is limited. In addition, this can also reduce energy consumption and facilitate maintenance.

[0067] The features disclosed in this application document may be important and implementable for the implementation of the embodiments in different design solutions, both individually and in any combination. The present disclosure is not limited to the embodiments shown, but includes or extends to all technical equivalents that fall within the scope of the appended claims.

Claims

1. A water-washing dust removal tower, comprising a tower body (100), an air inlet (110) located at the bottom of the tower body (100), and an air outlet (120) located at the top of the tower body (100); a water storage layer (200), a primary spray layer (300), a filler washing layer (400), and a filler demisting layer (500) are sequentially arranged inside the tower body (100) from bottom to top, characterized in that: A first-level spray pipe (310) for spraying from top to bottom is provided in the first-level spray layer (300), and the first-level spray pipe (310) is connected to the water storage layer (200) through a circulation pipeline; the first-level spray layer (300) is formed so that the first-level spray layer (300) has an increased cross-sectional area and a decreased height while maintaining a constant volume compared to an original first-level spray layer.

2. The water-washing dust removal tower according to claim 1, characterized in that: Under the condition that the volume remains unchanged, the height of the first-level spray layer (300) is equal to or less than half the height of the original first-level spray layer.

3. The water-washing dust removal tower according to claim 1, characterized in that: A secondary spray layer (600) is provided between the filler washing layer (400) and the filler demisting layer (500), and a secondary spray pipe (610) for spraying from top to bottom is provided in the secondary spray layer (600), and the secondary spray pipe (610) is also connected to the water storage layer (200) through a circulation pipeline.

4. The water-washing dust removal tower according to claim 3, characterized in that: The secondary spray layer (600) is shaped so that it has an increased cross-sectional area and a decreased height while maintaining a constant volume compared to the original secondary spray layer.

5. The water-washing dust removal tower according to claim 4, characterized in that: Under the condition that the volume remains unchanged, the height of the secondary spray layer (600) is equal to or less than half the height of the original secondary spray layer.

6. The water-washing dust removal tower according to any one of claims 1 to 5, characterized in that: The cross-sectional area of ​​the entire water-washing dust removal tower increases as the cross-sectional area of ​​the primary spray layer (300) increases, so that the cross-sectional area of ​​the water-washing dust removal tower is equal to the cross-sectional area of ​​the primary spray layer (300).

7. The water-washing dust removal tower according to any one of claims 1 to 5, characterized in that: A packing support plate is provided at the bottom of the packing washing layer (400), the packing is placed on the support plate in a random pile manner, and a packing pressing plate is provided above the packing.

8. The water-washing dust removal tower according to any one of claims 1 to 5, characterized in that: The air outlet (120) is located on the top of the tower body (100) above the filler demisting layer (500), and an air outlet hood is provided on the air outlet (120).

9. The water-washing dust removal tower according to any one of claims 1 to 5, characterized in that: A filtering device (210) is provided in the water storage layer (200).

10. The water-washing dust removal tower according to any one of claims 1 to 5, characterized in that: A first discharge port (410) is provided on the filler washing layer (400) and / or a second discharge port (510) is provided on the filler demisting layer (500).

11. The water-washing dust removal tower according to claim 1, characterized in that: A first inspection hole (320) is provided on the primary spray layer (300).

12. The water-washing dust removal tower according to claim 3, characterized in that: A second inspection hole (620) is provided on the secondary spray layer (600).

13. The water-washing dust removal tower according to any one of claims 1 to 5, characterized in that: The gas outlet (120) is located on an extension portion connected to the filler demisting layer (500) and faces vertically downward, and a U-shaped chimney can be connected to the vertically downward-facing gas outlet so that the exhausted gas can flow downward first and then upward.

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