An industrial waste gas treatment device

Abstract

The application discloses an industrial waste gas treatment device, which comprises a waste gas tower, an air inlet is arranged at the bottom of the waste gas tower, an air outlet is arranged at the top of the waste gas tower, a plurality of layers of suspended filler layers are arranged in the waste gas tower in a spaced manner along the up-down direction, active sludge spraying devices are arranged at the upper part of each layer of the filler layers, the filler layer comprises a plurality of horizontal layers and vertical layers, the horizontal layers comprise a plurality of horizontal filler strings which are arranged in a parallel and spaced manner along the horizontal direction, the horizontal filler string comprises a horizontal pulling member, and a plurality of filler units are arranged on the horizontal pulling member in a threaded manner; the vertical layers comprise a plurality of vertical filler strings which are arranged in a spaced manner, the vertical filler string comprises a vertical pulling member which is arranged in a vertical manner, and a plurality of filler units are arranged on the vertical pulling member in a threaded manner. The application has the advantages of high treatment efficiency and difficulty in blocking.

Description

Technical Field

[0001] This invention relates to the field of industrial waste gas treatment equipment technology, and in particular to an industrial waste gas treatment device. Background Technology

[0002] Traditional industrial waste gas treatment devices often use waste gas spray towers, typically with 2-3 layers of packing material. This packing material is randomly stacked on perforated baffles, and commonly uses annular packing such as Pall rings, Raschig rings, stepped rings, and saddle rings. As waste gas passes through the packing, pollutants are absorbed by the spray liquid on the packing. However, this structure has several drawbacks:

[0003] ① Because the packing material in the packing layer is stacked irregularly, the thickness of the packing layer is limited. If the packing layer is too thin, the removal efficiency of pollutants is low; if the packing layer is too thick, the resistance to exhaust gas is relatively large, affecting the air volume.

[0004] ② The scrubbing liquid has limited ability to flush the inside of the packing layer. When activated sludge is used as the scrubbing liquid, the sludge will accumulate inside the packing layer, which will not only produce malodorous anaerobic conditions, but also cause the waste gas to form short-circuit, reducing the removal efficiency.

[0005] ③ The packing material is a closed ring or cylindrical shape, which makes it easy for the packing material itself to become clogged. In addition, the random accumulation of the packing material makes the entire packing layer easy to become clogged. This will limit the concentration of activated sludge in the exhaust gas tower, which can usually only be controlled below 4000 mg / L, thus affecting the exhaust gas treatment efficiency.

[0006] ④ The volume of the packing material exposed to the gas is much smaller than that of the exhaust gas tower, resulting in very low space utilization.

[0007] Therefore, it is necessary to further improve and refine the existing technology to overcome these shortcomings, and this invention is made based on this situation. Summary of the Invention

[0008] The purpose of this invention is to overcome the shortcomings of the prior art and provide an industrial waste gas treatment device with high processing efficiency.

[0009] This invention is achieved through the following technical solution:

[0010] To solve the above-mentioned technical problems, the present invention provides an industrial waste gas treatment device, including a waste gas tower. The waste gas tower has an air inlet at the bottom and an air outlet at the top. The interior of the waste gas tower is provided with several suspended packing layers spaced apart in the vertical direction. Each packing layer is equipped with an activated sludge spraying device at its upper part. The packing layers include several horizontal and vertical layers. The horizontal layers include several horizontally spaced horizontal packing strings, each horizontal packing string including a horizontal tension member, on which several packing units are threaded. The vertical layers include several vertically spaced vertical packing strings, each vertical packing string including a vertically spaced vertical tension member, on which several packing units are threaded.

[0011] To further address the technical problem addressed by this invention, an industrial waste gas treatment device is provided by this invention, wherein the two ends of the horizontal pulling member are detachably fixed to the inner wall of the waste gas tower, or the horizontal layering further includes a support ring detachably fixed to the inner wall of the waste gas tower, and the two ends of the horizontal pulling member are respectively fixed to the support ring; the upper and lower ends of the vertical pulling member are provided with support frames detachably fixed to the inner wall of the waste gas tower, and the upper and lower ends of the vertical pulling member are respectively fixed to the upper and lower support frames.

[0012] To further address the technical problem addressed by this invention, in an industrial waste gas treatment device provided by this invention, the orientation angles of each layer of horizontally layered packing material strings in the horizontal direction are different.

[0013] To further solve the technical problem to be solved by the present invention, the present invention provides an industrial waste gas treatment device in which the packing unit includes a central shaft, the central shaft is provided with a rope hole that runs through it from top to bottom and is used to thread a rope, and the packing unit can rotate freely when strung together with rope; the side wall of the central shaft is provided with a plurality of outwardly extending open side walls, and the open side walls are provided with a plurality of ventilation windows.

[0014] To further address the technical problems addressed by this invention, an industrial waste gas treatment device provided by this invention includes a mud accumulation wing plate at the lower part of the open sidewall.

[0015] To further address the technical problems to be solved by this invention, the present invention provides an industrial waste gas treatment device in which the packing unit has four open sidewalls, and the four open sidewalls are distributed in an X-shape around the central axis.

[0016] To further address the technical problems addressed by this invention, an industrial waste gas treatment device is provided by this invention. The activated sludge spraying device includes a plurality of activated sludge nozzles disposed on the upper part of corresponding packing layers. The activated sludge nozzles are connected to sludge-water pipes, which are equipped with flow control valves and are connected to activated sludge pumping devices.

[0017] To further address the technical problems addressed by this invention, the activated sludge nozzle in the industrial waste gas treatment device provided by this invention is a rotary nozzle.

[0018] To further solve the technical problem to be solved by the present invention, the present invention provides an industrial waste gas treatment device in which a backwashing device is provided on the upper part of each packing layer. The backwashing device includes a plurality of backwashing nozzles provided on the upper part of the corresponding packing layer. The backwashing nozzles are connected to backwashing water pipes. The backwashing water pipes are provided with backwashing valves and are connected to a water supply device.

[0019] To further solve the technical problem to be solved by the present invention, the present invention provides an industrial waste gas treatment device in which a gas distribution pipe frame is provided at the air inlet, the gas distribution pipe frame is located inside the waste gas tower, and a plurality of evenly distributed gas distribution ports are provided on the gas distribution pipe frame, all of which face downward.

[0020] Compared with the prior art, the present invention has the following advantages:

[0021] 1. The present invention adopts a structure that combines horizontal and vertical layering, which can make full use of the space inside the tower and ensure that the waste gas can fully contact the packing when it flows through each layer of packing, thereby improving the waste gas treatment efficiency.

[0022] 2. In this invention, each layer of horizontally layered packing strings is arranged parallel to each other in the horizontal direction. This design ensures that the packing units are arranged uniformly and orderly, preventing them from piling up haphazardly. First, the packing units are all suspended, which not only increases the contact area between the exhaust gas and the packing units but also significantly improves space utilization. Furthermore, because the gaps between the packing units are relatively uniform, the gas channels formed by these gaps are winding and smooth, preventing blockage by sludge or bacterial flocs. This design greatly extends the residence time of the exhaust gas within the tower, improving pollutant removal efficiency.

[0023] 3. In this invention, the horizontal packing strings in each layer are oriented at different angles in the horizontal direction. That is, the horizontal packing strings of adjacent layers should be staggered at a certain angle when suspended. The purpose of this design is to allow the exhaust gas to pass through more evenly, which can effectively avoid short-circuiting of the exhaust gas during its flow in the tower and improve the exhaust gas treatment efficiency.

[0024] 4. In this invention, the vertical stratification involves suspending multiple vertical packing strings, which are evenly spaced within the vertical stratification. This design allows the packing units to be evenly distributed throughout the entire vertical stratification, increasing the contact area between the exhaust gas and the packing units, significantly improving space utilization, minimizing resistance to exhaust gas, and enhancing pollutant removal efficiency. Furthermore, the vertical packing strings are fixed at both ends with support frames to prevent them from tangling. Because the vertical packing strings suspend each packing unit vertically, in addition to higher ventilation efficiency, they also more effectively and automatically remove accumulated sludge or bacterial flocs, preventing excessive accumulation and thus ensuring smoother ventilation.

[0025] 5. This invention employs an open-type packing unit, preventing the accumulation of sludge or bacterial flocs inside the packing, thus facilitating unobstructed airflow. Furthermore, the inner and outer surfaces of the open sidewalls can fully contact the sprayed liquid (activated sludge) and pollutants, which helps improve waste gas treatment efficiency.

[0026] 6. The packing unit of this invention is also designed with rope holes, allowing it to be strung with ropes or metal rods and suspended horizontally or vertically inside the tower, facilitating the orderly and regular arrangement of the packing units. Furthermore, when the packing units are strung together with ropes or metal rods, they can rotate freely. During waste gas treatment, the high-speed flow of waste gas can drive the suspended packing units to rotate, promptly dislodging accumulated sludge or bacterial flocs, preventing excessive accumulation of sludge or bacterial flocs, thus ensuring smooth ventilation and improving waste gas treatment efficiency. Attached Figure Description

[0027] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, wherein:

[0028] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0029] Figure 2 This is a cross-sectional schematic diagram of the present invention;

[0030] Figure 3 This is a schematic diagram of a three-dimensional structure of a packing unit;

[0031] Figure 4 This is a three-dimensional structural diagram of another type of packing unit;

[0032] Figure 5 This is a schematic diagram of packing units strung together to form a horizontal or vertical packing string;

[0033] Figure 6 This is a schematic diagram of a horizontally layered three-dimensional structure (some filler units are omitted);

[0034] Figure 7This is a schematic diagram of a vertically layered three-dimensional structure (some filler units are omitted);

[0035] Figure 8 yes Figure 2 Schematic diagram of cross-section at point AA;

[0036] Figure 9 yes Figure 2 Schematic diagram of cross-section at point BB. Detailed Implementation

[0037] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0038] like Figures 1 to 9 The illustrated industrial waste gas treatment device is mainly used to treat industrial waste gas containing organic pollutants. The device includes a waste gas tower 1, with an inlet 11 at the bottom and an outlet 12 at the top. Several suspended packing layers 2 are spaced vertically inside the waste gas tower 1, and each packing layer 2 is equipped with an activated sludge spraying device 3 at its upper part. The activated sludge spraying device 3 primarily functions to spray a spraying liquid onto the packing layer 2. The spraying liquid is preferably activated sludge, i.e., sludge-water containing microorganisms, which can decompose harmful substances in the industrial waste gas.

[0039] During the treatment process, a negative pressure is generated at the outlet 12. Under this negative pressure, the industrial waste gas enters the bottom of the waste gas tower 1 through the inlet 11, and then rises, passing through multiple packing layers 2 in sequence. During this process, the industrial waste gas and the activated sludge in the packing layers 2 come into full contact. The microorganisms in the activated sludge adsorb and decompose the harmful substances in the industrial waste gas. After multi-stage treatment by the packing layers 2, most of the harmful substances in the waste gas are eliminated, meeting emission standards, and finally discharged from the outlet 12.

[0040] like Figure 2 As shown, each layer of packing material 2 is a treatment area. Each layer of packing material 2 has a reserved space at its top. This reserved space is preferably approximately 500mm high. This reserved space primarily serves the following purposes: firstly, it facilitates the installation of the nozzles of the activated sludge spraying device 3 and the backwashing device 4; secondly, it facilitates the subsequent disassembly and cleaning of the packing material; and thirdly, it allows for a wider spraying range of the spray liquid (such as activated sludge), ensuring uniform coverage of all packing material.

[0041] The filler layer 2 comprises several horizontal layers 2a and vertical layers 2b. For example... Figure 2As shown, in this embodiment, each packing layer 2 includes 5 horizontal layers 2a and 1 vertical layer 2b. This design, which combines horizontal layers 2a and vertical layers 2b, can make full use of the space inside the tower and ensure that the waste gas flows fully into contact with the packing as it passes through each packing layer, thereby improving the waste gas treatment efficiency.

[0042] The packing material of the present invention is fixed in a string, and the packing string can be fixed horizontally and vertically. A more detailed description follows:

[0043] Among them, such as Figures 2-9 As shown, the transverse layer 2a includes several transverse packing strings 21 arranged parallel to each other in the horizontal direction. Specifically, the transverse packing string 21 includes a transverse tension member 211, on which multiple packing units 2c are threaded.

[0044] The fixing method of the transverse tension member 211 is preferably one of two types. One type is that both ends of the transverse tension member 211 are detachably fixed to the inner wall of the exhaust gas tower 1. The other type is that the transverse layer 2a also includes a support ring 212 detachably fixed to the inner wall of the exhaust gas tower 1 (e.g., Figure 6 As shown in the figure, the two ends of the transverse tension member 211 are respectively fixed to the support ring 212. The support ring 212 is preferably snapped or connected to the inner wall of the exhaust gas tower 1 by screws.

[0045] The transverse tension member 211 is preferably a metal rod, steel wire rope, corrosion-resistant soft rope, etc., and can be either rigid or flexible. The fixing method between the transverse tension member 211 and the inner wall of the exhaust gas tower 1 or the support ring 212 is preferably welding, bolting or hanging, and of course, a detachable connection method is more preferred.

[0046] like Figure 6 As shown, the transverse packing strings 21 of each horizontal layer 2a are arranged parallel to each other in the horizontal direction. This design ensures that the packing units 2c are arranged uniformly and orderly, preventing them from piling up haphazardly. Simultaneously, the transverse tensioning members 211 of the transverse packing strings 21 are straightened, thereby suspending each packing unit 2c evenly and orderly in the tower, covering a layer to form the aforementioned transverse layer 2a. Since the packing units 2c are all suspended, the gaps between them are relatively uniform. This not only increases the contact area between the exhaust gas and the packing units 2c, but also significantly improves space utilization.

[0047] Furthermore, because the gaps between the packing units 2c are relatively uniform, the gas channels formed by these gaps are meandering yet smooth, preventing blockages. This design significantly extends the residence time of the exhaust gas within the tower, improving pollutant removal efficiency. Simultaneously, the uniform gaps and unobstructed gas channels result in minimal resistance to the exhaust gas, meaning lower energy consumption and time are required for treatment, thus reducing operating costs.

[0048] Furthermore, because the packing units 2c are arranged in an orderly manner and do not pile up, the service life of the packing is extended, reducing the frequency of replacement and maintenance, and improving the overall performance and stability of the exhaust gas tower. Therefore, this design is an effective solution in exhaust gas tower design, capable of improving the efficiency and quality of exhaust gas treatment.

[0049] Of course, the adjacent transverse layers 2a are also spaced apart, that is, there are suitable gaps between the layers to allow exhaust gas to pass through.

[0050] During the design and operation of waste gas treatment towers, special attention must be paid to certain details and key points. One such point is that when suspending the transverse packing strings 21 of each horizontal layer 2a, certain measures need to be taken to prevent short-circuiting of the waste gas within the tower. Specifically, the horizontal orientation angles of the transverse packing strings 21 in each horizontal layer 2a should be different. That is, the transverse packing strings 21 of adjacent layers should be staggered by a certain angle when suspended. This angle refers to the included angle in the circumferential direction, which is the included angle projected onto the upper and lower planes. The purpose of this design is to allow the waste gas to pass through more evenly, effectively avoiding short-circuiting during the waste gas flow within the tower and improving the waste gas treatment efficiency.

[0051] In this implementation, a packing material with 5 small layers and 2a horizontal layers is used, with the angle between adjacent layers in the circumferential direction being approximately 72°. This angle design ensures more uniform flow of exhaust gas within the tower, reduces the probability of short-circuiting, and also improves the stability of exhaust gas treatment.

[0052] It should be noted that this angle design is not the only solution. The specific angle and suspension method need to be adjusted and optimized according to the design of the exhaust gas tower and the environment in which it is used.

[0053] like Figure 7As shown, the vertical layer 2b includes several vertical packing strings 22, each including a vertically arranged vertical tension member 221, on which several packing units 2c are threaded. Both the upper and lower ends of the vertical tension member 221 are provided with detachable support frames 222 fixed to the inner wall of the exhaust gas tower 1. The upper and lower ends of the vertical tension member 221 are respectively fixed to the upper and lower support frames 222. This ensures that the vertical packing strings 22 can be stably suspended inside the tower. The support frames 222 are preferably snap-fitted or connected to the inner wall of the exhaust gas tower 1 by screws.

[0054] The vertical tension member 221 is preferably a metal rod, steel wire rope, corrosion-resistant soft rope, etc., and can be either rigid or flexible. The fixing method between the vertical tension member 221 and the support frame 222 is preferably welding, bolting, or hanging, and of course, a detachable connection is more preferred.

[0055] The vertical layer 2b mainly involves suspending multiple vertical packing strings 22, which are evenly spaced within the vertical layer 2b. This design ensures uniform spacing between the packing units 2c and unobstructed gas flow. Simultaneously, this design allows the packing units 2c to be evenly distributed throughout the vertical layer, increasing the contact area between the exhaust gas and the packing units 2c, significantly improving space utilization, minimizing resistance to exhaust gas flow, and enhancing pollutant removal efficiency.

[0056] In addition, both the upper and lower ends of the vertical packing string 22 are fixed with support frames 222 to prevent the vertical packing string 22 from getting tangled together.

[0057] Because the vertical packing string 22 suspends each packing unit 2c vertically, in addition to higher ventilation efficiency, it can also more effectively and automatically remove accumulated sludge or bacterial flocs, preventing excessive accumulation and thus ensuring smoother ventilation. This improves the efficiency of waste gas treatment and reduces clogging problems during the treatment process.

[0058] More specifically, both the horizontal packing string 21 and the vertical packing string 22 mentioned above utilize packing unit 2c. The main function of packing unit 2c is to provide support and allow activated sludge to adhere, ensuring sufficient contact between the waste gas and the activated sludge on the surface of packing unit 2c, thereby improving waste gas treatment efficiency. The packing unit 2c will be described in detail below:

[0059] like Figures 3-7 As shown, the filling unit 2c includes a central shaft 2c1, and the central shaft 2c1 is provided with a rope hole 2c11 that runs through it from top to bottom and is used to thread a rope.

[0060] Because the packing unit 2c is designed with rope holes 2c11, it can be strung with metal wire, metal rod, or rope (horizontal tension member 211, vertical tension member 221) and suspended horizontally or vertically inside the tower. This facilitates the orderly and regular arrangement of the packing unit 2c, allowing for more thorough contact between the exhaust gas and the packing. Secondly, the packing unit 2c can rotate freely when strung together with rope. Therefore, during exhaust gas treatment, the high-speed flow of exhaust gas can drive the suspended packing unit 2c to rotate, promptly dislodging accumulated sludge or bacterial flocs, preventing excessive accumulation of sludge or bacterial flocs, thus ensuring smooth ventilation and improving exhaust gas treatment efficiency. Of course, both the packing units 2c on the horizontal packing string 21 and the packing units 2c on the vertical packing string 22 possess this free rotation characteristic.

[0061] The central shaft 2c1 has several outwardly extending open sidewalls 2c2. These open sidewalls 2c2 radiate outwards from the central shaft 2c1, meaning the packing unit 2c is open. This design has the following advantages: First, the open packing unit 2c prevents sludge or bacterial flocs from accumulating inside, facilitating airflow. Second, the inner and outer surfaces of the open sidewalls 2c2 can fully contact the spray liquid (activated sludge) and pollutants, improving waste gas treatment efficiency.

[0062] Preferably, the open sidewalls 2c2 are all arc-shaped sidewalls, and more preferably semi-circular arc-shaped. For the same diameter and number of sidewalls, the semi-circular arc-shaped sidewalls have a larger effectively utilized surface area.

[0063] The open sidewall 2c2 is provided with several ventilation windows 2c21. The design of the ventilation windows 2c21 not only increases the surface area of ​​the packing material, but also increases the air permeability, which is beneficial to improving the efficiency of waste gas treatment.

[0064] More specifically, such as Figures 3-5 As shown, the lower part of the open sidewall 2c2 is provided with a sludge collection wing plate 2c22. The design of the sludge collection wing plate 2c22 helps to improve the removal efficiency of organic pollutants. Microorganisms are usually located in sludge, and the sludge collection wing plate 2c22 has the function of supporting sludge and bacterial flocs, which can increase the sludge hanging area, allowing more sludge to adhere, so that more microorganisms can remain in the packing material, thereby improving the treatment efficiency of organic pollutants.

[0065] More specifically, the packing unit 2c has four open sidewalls 2c2, and these four open sidewalls 2c2 are distributed in an X-shape around the central axis 2c1. This shape design helps to make full use of space and reduce short-circuiting.

[0066] It is worth noting that, such as Figure 3 , Figure 4As shown, this invention designs two types of packing units 2c, the main difference being the position of the mud-collecting flange 2c22. These two types of packing units 2c can be used individually or in combination. Figure 5 As shown, when the two packing units 2c are used together, the preferred method is to connect them in series, which will result in higher processing efficiency.

[0067] More specifically, the activated sludge spraying device 3 includes a plurality of activated sludge nozzles 31 disposed on the upper part of the corresponding packing layer 2. The activated sludge nozzles 31 are preferably evenly distributed on the upper part of the corresponding packing layer 2 to uniformly spray the spray liquid (activated sludge). This design allows the activated sludge to be uniformly sprayed across the entire packing layer 2, increasing the contact area between the waste gas and the activated sludge, and improving the waste gas treatment efficiency.

[0068] The activated sludge nozzle 31 is connected to a sludge-water pipe 32, and the sludge-water pipe 32 is connected to an activated sludge pumping device.

[0069] Of course, the mud and water pipe 32 is equipped with a flow control valve 33. This design can flexibly control the flow rate of the spray liquid according to the actual situation, thereby meeting the special needs of waste gas treatment.

[0070] More specifically, the activated sludge nozzle 31 is preferably a rotary nozzle, and more preferably a PP rotary nozzle. This design allows for a wider and more uniform spraying range, covering the entire packing layer 2 and avoiding dead zones. Simultaneously, the PP rotary nozzle is corrosion-resistant, wear-resistant, and has a long service life, effectively extending the nozzle's lifespan. Furthermore, the PP rotary nozzle is easy to clean and maintain, facilitating user operation and maintenance.

[0071] Preferably, each packing layer 2 is equipped with a backwashing device 4 at its upper part. The main function of the backwashing device 4 is to use water flow to flush away the sludge when the packing material in the waste gas treatment tower becomes clogged, thereby clearing the packing material. This design effectively solves the problem of packing material clogging, improves the efficiency of waste gas treatment, and reduces the cost of maintenance and replacement of packing material.

[0072] More specifically, the backwashing device 4 includes several backwashing nozzles 41 disposed on the upper part of the corresponding packing layer 2. Each backwashing nozzle 41 is connected to a backwashing water pipe 42, which is equipped with a backwashing valve 43 and a water supply device. The backwashing nozzles 41 are also selectively and evenly distributed on the upper part of the corresponding packing layer 2 to ensure uniform water spraying.

[0073] More specifically, such as Figure 9As shown, a gas distribution pipe rack 111 is provided at the air inlet 11. The gas distribution pipe rack 111 is located inside the waste gas tower 1, and multiple evenly distributed gas distribution ports 112 are provided on the gas distribution pipe rack 111, all of which face downwards. During the waste gas treatment process, the waste gas entering from the air inlet 11 is first diverted to each gas distribution port 112. Each air inlet 11 is located at a different horizontal position to better cover the bottom of the entire tower cavity. Then, the waste gas flows downwards into the tower from each gas distribution port 112. Since the gas distribution ports 112 all face downwards, the waste gas will first tumble when entering the tower before continuing to flow upwards, which allows the waste gas to be evenly distributed throughout the tower. This design makes the waste gas flow more evenly from bottom to top within the tower, which helps to improve the waste gas treatment efficiency.

[0074] More specifically, the exhaust gas tower 1 is equipped with several manholes 13 corresponding to the positions of the packing layer 2 and the top of the exhaust gas tower 1, respectively. Each manhole 13 is equipped with a transparent observation window 131. The manholes 13 are mainly for maintenance personnel to enter the tower for maintenance and cleaning work, while the observation windows 131 facilitate direct observation of the tower's interior from the outside. These features are designed to facilitate future maintenance and observation of the internal conditions.

[0075] In this embodiment, two manholes 13 are provided at the position of each packing layer 2, and a manhole 13 is also provided at the position of the demister layer at the top of the exhaust gas tower. The diameter of the manhole 13 is preferably 500 mm. Of course, the position and size of the manhole 13 should be adjusted according to the specific situation to ensure that personnel entering the tower can safely operate and maintain it.

[0076] More specifically, the bottom of the exhaust gas tower 1 is provided with a drain outlet 14 for discharging excess water and sludge. Of course, the drain outlet 14 is usually equipped with a valve.

[0077] More specifically, the top of the exhaust gas tower 1 is provided with a demisting zone, which is a cavity. Water mist generated at the packing layer 2 can be collected in the demisting zone at the top of the exhaust gas tower 1 and discharged from the outlet 12 under negative pressure.

[0078] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. An industrial waste gas treatment device, characterized in that: The system includes an exhaust gas tower (1), which has an air inlet (11) at the bottom and an air outlet (12) at the top. The exhaust gas tower (1) has several suspended packing layers (2) arranged at intervals along the vertical direction inside. Each packing layer (2) is equipped with an activated sludge spraying device (3) at the top. The packing layer (2) includes several horizontal layers (2a) and vertical layers (2b). The horizontal layers (2a) include several horizontal packing strings (21) arranged parallel to each other in the horizontal direction. The horizontal packing strings (21) include horizontal tension members (211), and several packing units (2c) are threaded through the horizontal tension members (211). The vertical layers (2b) include several vertical packing strings (22) arranged at intervals. The vertical packing strings (22) include vertical tension members (221) arranged vertically, and several packing units (2c) are threaded through the vertical tension members (221). The two ends of the horizontal tension member (211) are respectively detachably fixed to the inner wall of the exhaust gas tower (1), or the horizontal layer (2a) further includes a support ring (212) detachably fixed to the inner wall of the exhaust gas tower (1), and the two ends of the horizontal tension member (211) are respectively fixed to the support ring (212); the upper and lower ends of the vertical tension member (221) are provided with support frames (222) detachably fixed to the inner wall of the exhaust gas tower (1), and the upper and lower ends of the vertical tension member (221) are respectively fixed to the upper and lower support frames (222); The packing unit (2c) includes a central shaft (2c1), which has a rope hole (2c11) running through it from top to bottom for threading a rope. The packing unit (2c) can rotate freely when strung together with rope. The side wall of the central shaft (2c1) has several outwardly extending open side walls (2c2), and the open side walls (2c2) have several ventilation windows (2c21). The lower part of the open sidewall (2c2) is provided with a mud accumulation wing plate (2c22). The packing unit (2c) has four open sidewalls (2c2), and the four open sidewalls (2c2) are distributed in an X-shape around the central axis (2c1).

2. The industrial waste gas treatment device according to claim 1, characterized in that: The horizontal packing strings (21) of each horizontal layer (2a) have different orientation angles in the horizontal direction.

3. The industrial waste gas treatment device according to claim 1, characterized in that: The activated sludge spraying device (3) includes several activated sludge nozzles (31) located on the upper part of the corresponding packing layer (2). The activated sludge nozzles (31) are connected to a sludge water pipe (32). The sludge water pipe (32) is equipped with a flow control valve (33). The sludge water pipe (32) is connected to an activated sludge pumping device.

4. The industrial waste gas treatment device according to claim 3, characterized in that: The activated sludge nozzle (31) is a rotary nozzle.

5. An industrial waste gas treatment device according to claim 1, characterized in that: Each packing layer (2) is provided with a backwashing device (4) at its upper part. The backwashing device (4) includes several backwashing nozzles (41) provided at the upper part of the corresponding packing layer (2). The backwashing nozzles (41) are connected to backwashing water pipes (42). The backwashing water pipes (42) are provided with backwashing valves (43). The backwashing water pipes (42) are connected to water supply devices.

6. The industrial waste gas treatment device according to claim 1, characterized in that: The air inlet (11) is provided with a gas distribution pipe rack (111), which is located inside the exhaust gas tower (1), and the gas distribution pipe rack (111) is provided with a plurality of evenly distributed gas distribution ports (112), all of which face downward.

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