Waste gas treatment device

Abstract

The invention discloses a waste gas treatment device which comprises two fixing plates, the opposite sides of the fixing plates are fixedly connected with fixing blocks, the two fixing plates are symmetrically arranged with the fixing blocks as the center, the number of the fixing blocks is multiple, the multiple fixing blocks form multiple gaps, and the gaps are gradually increased from the middle to the two ends of the fixing plates. The edges of the two sides of the top of the fixing block are chamfered. The invention relates to the technical field of waste gas treatment. According to the waste gas treatment device, local throttling can be formed through the small gap in the middle, gas can be diffused towards the two sides through the large gaps at the two ends, and therefore gas flow entering the device is more evenly distributed on the cross section, bias flow is avoided, and meanwhile the annular space of the circular groove provides a reasonable diffusion boundary for spraying liquid; each part of waste gas can be in full contact with spraying liquid, dust and soluble pollutants in the waste gas can be more efficiently removed, and a better foundation is laid for subsequent biological filter treatment.

Description

Technical Field

[0001] This invention relates to the field of waste gas treatment technology, specifically to a waste gas treatment device. Background Technology

[0002] Waste gas treatment devices are equipment or systems that remove harmful pollutants (such as particulate matter, volatile organic compounds (VOCs), sulfides, nitrogen oxides, etc.) from waste gas in industrial production, municipal operations, and other scenarios through physical, chemical, or biological methods, so that the waste gas can be discharged in accordance with national or local emission standards. Waste gas treatment methods include physical treatment, chemical treatment, and biological treatment. Among them, biological treatment utilizes the metabolic action of microorganisms to convert harmful substances (such as hydrogen sulfide, ammonia, volatile organic compounds, etc.) in odorous gases into harmless substances such as water, carbon dioxide, and inorganic salts. Its workflow can be divided into three core stages: pretreatment, biological filtration, and exhaust gas emission. Each stage works synergistically to achieve efficient deodorization.

[0003] Biological filters allow aerobic microorganisms such as bacteria to attach to and grow on an organic biological substrate, forming a filter layer. Exhaust gas passes through this moist, porous filter layer filled with active microorganisms. These microbial cells, with their small size, large surface area, strong adsorption capacity, and diverse metabolic types, adsorb, absorb, and degrade odorous substances.

[0004] In existing biological filters, when waste gas directly enters the pretreatment unit during operation, the simple design of the air inlet can easily cause airflow short-circuiting, resulting in some waste gas passing through without contacting the spray water. This leads to the local humidity of the waste gas entering the filter being lower than 90% (the critical value for microbial activity), causing the packing material to dry out and the microorganisms to become inactive. Summary of the Invention

[0005] To solve the above technical problems, the present invention is achieved through the following technical solution: a waste gas treatment device, including a box, an air inlet pipe fixedly connected to the top of the box, an airflow distributor fixedly connected to the inside of the box near the air inlet pipe, and a filter layer fixedly connected to the end of the box away from the airflow distributor. The steam-water separator is connected to the top of the housing away from the air inlet pipe via a pipe. The exhaust gas treatment tower is fixedly connected to the output end of the gas-water separator via an intermediate pipe. The airflow distributor includes two fixed plates, each with a fixed block fixedly connected to its opposite side. The two fixed plates are symmetrically arranged around the fixed blocks. Exhaust gas enters the housing through the inlet pipe, entering the gap between the partition and the housing. The exhaust gas then flows through the gap between two adjacent fixed blocks and finally downwards through the bottom through-hole. Simultaneously, water enters through the inlet pipe, allowing water to come into contact with the exhaust gas. By narrowing the gap in the middle of the fixed blocks and gradually widening it towards both ends, the narrower gap in the middle creates localized throttling, while the larger gap at both ends facilitates gas diffusion to both sides. This design ensures a more uniform airflow distribution across the cross-section of the equipment, preventing flow deviation. The annular space of the circular trough provides a reasonable diffusion boundary for the spray liquid. When the first water pipe in the center sprays outwards, the spray liquid, aided by the obstruction and reflection of the inner wall of the circular trough, evenly covers the entire cross-section, ensuring that every part of the exhaust gas can fully contact the spray liquid. This allows for more efficient removal of dust and soluble pollutants from the exhaust gas, or temperature and humidity regulation, laying a better foundation for subsequent biological filter treatment. Multiple fixed blocks are used, forming multiple gaps that gradually increase in size from the center towards both ends of the fixed plate. The top edges of the fixed blocks are chamfered.

[0006] Preferably, the bottom of the fixing plate has through holes located in the gap between two fixing blocks. There are multiple through holes, which are evenly distributed on the fixing plate. A circular groove is formed in the middle of the through hole, and the circular groove is symmetrically arranged on both sides of the through hole. The through hole completely penetrates the two fixing plates along the thickness direction. V-shaped blocks are fixedly connected to the opposite sides of the fixing plates. The inverted V-shaped blocks serve as the central diversion core, which can evenly guide the airflow entering the gap to both sides, avoiding the airflow from concentrating and impacting a certain area to form a biased flow. The inclined plates on both sides further receive the diverted airflow and guide the airflow to flow smoothly downward along the plate surface through the tilt angle. Finally, the airflow forms an orderly path of central diversion and lateral guidance within the entire gap cross section, improving the uniformity of airflow distribution and laying a stable foundation for subsequent processing. The V-shaped blocks are inverted and located in the gap between two adjacent fixing blocks. An inclined plate is fixedly connected to the side of the fixing block closest to the V-shaped block, and the inclined plate is symmetrically arranged with the V-shaped block as the center.

[0007] Preferably, the housing includes a shell, the top of which is fixedly connected to the air inlet pipe. A partition is fixedly connected inside the shell, with a gap between the partition and the shell. A spray assembly is installed inside the shell. The partition is located near the end of the air inlet pipe, and an airflow distributor is located at the gap between the partition and the shell. Two fixing plates are fixedly connected to the inner wall of the shell and the outer side of the partition, respectively. A guide plate is fixedly connected to the side of the partition near the airflow distributor. The airflow continues downward through the airflow distributor. Some of the gas in the exhaust gas liquefies after humidification and spraying. At this time, the guide plate, with its inclined structure, can effectively intercept the droplets. After the droplets contact the surface of the guide plate, they flow downward along the plate surface under gravity, preventing them from continuing forward with the airflow. Simultaneously, the bottom baffle prevents droplets from entering the path of subsequent processes, further improving gas-liquid separation efficiency, reducing the amount of liquid carried by the airflow entering subsequent processes, and reducing the risk of corrosion and blockage to downstream equipment. A baffle is fixedly connected to the bottom of the inner wall of the shell. The guide plate is inclined, with the inclination direction from top to bottom from the partition to the baffle. The plate is located above the guide plate. Multiple vertical plates are fixedly connected inside the housing. These vertical plates are located on the side of the partition away from the airflow distributor. They are evenly arranged between the housing and the partition. An inclined plate is fixedly connected inside the housing. The vertical plates serve as the guide boundary for the spray liquid from the second water pipe, preventing the spray liquid from spreading to the edge of the equipment and causing waste. The spray pipes between adjacent vertical plates spray directly onto the filter media layer below, allowing the spray liquid to fall precisely into the filter media layer, ensuring that each filter media piece is evenly wetted. This prevents localized water shortages that could reduce microbial activity or excessive water accumulation that could affect air permeability, maintaining the filter media layer in a suitable humidity environment for microbial survival and ensuring stable deodorization. Simultaneously, the inclined plate's reflection of the spray liquid further recovers the spray liquid to the filter media area, improving the utilization rate of the spray liquid. Multiple inclined plates are arranged in groups of two, symmetrically positioned around the vertical plate. The inclined plates extend from the top of the vertical plate to the middle of the two vertical plates, with an upward tilt.

[0008] Preferably, the spray assembly includes a water inlet pipe located inside the partition. A first water pipe is fixedly connected to the bottom outer side of the water inlet pipe. The first water pipe is L-shaped and has a hole on its outer side. The side of the first water pipe away from the water inlet pipe is located in the gap between the partition and the housing, and the first water pipe is located inside the circular groove of the through hole. There are multiple first water pipes, which are evenly arranged on the water inlet pipe. A connecting pipe is fixedly connected to the outer side of the water inlet pipe. The connecting pipe is perpendicular to the partition. A second water pipe is fixedly connected to the outer side of the connecting pipe. The bottom outer side of the second water pipe has a hole. The second water pipe is perpendicular to the connecting pipe and is located in the gap between two adjacent vertical plates. There are multiple second water pipes, which are evenly arranged on the connecting pipe.

[0009] Preferably, the filter media layer includes multiple intermediate plates, which are perpendicular to the partitions. The bottom of the intermediate plates is fixedly connected to the bottom of the inner wall of the housing, and both ends of the intermediate plates are fixedly connected to one side of the partition and the inner wall of the housing, respectively. A positioning block is fixedly connected to the top of the intermediate plates, and a trapezoidal block is fixedly connected to the opposite side of the intermediate plates. The humidified exhaust gas enters the gap between the partition and the housing on the side away from the guide plate through the baffle. Subsequently, the exhaust gas enters the gap between the multiple intermediate plates, allowing it to contact the packing material inside the fixed frame through the conical holes of the positioning blocks. By setting the airflow distribution structure at the bottom of the intermediate plates and positioning blocks, the exhaust gas entering the filter media layer can be evenly distributed. To prevent concentrated airflow from impacting a specific area and causing flow deviation, a reasonable opening ratio and guide angle design ensure that the exhaust gas passes through the entire filter media cross-section at a stable and uniform speed. This guarantees that every part of the packing material can fully contact the exhaust gas, eliminating dead zones and unreacted packing areas caused by uneven airflow distribution. This improves the degradation efficiency of odorous substances by microorganisms and provides a core guarantee for the overall treatment effect of the filter media. Multiple trapezoidal blocks are evenly arranged on the middle plate. The positioning blocks have conical holes inside. The top opening of the conical holes is large, and the inclined inner wall of the conical holes guides the rising odorous gas, causing the gas to flow out of the holes in a divergent manner. Uniform diffusion prevents localized airflow concentration from causing excessive load on some packing layers, allowing odorous gases to fully contact the biofilm on the packing surface. This provides more sufficient reaction conditions for microbial degradation, indirectly improving overall deodorization efficiency and reducing treatment dead zones caused by uneven gas distribution. Simultaneously, the effluent generated during the operation of the biological filter flows rapidly downwards along the inner wall of the conical holes, preventing water accumulation at the top of the plate. The conical holes are located in the gap between two adjacent trapezoidal blocks on an intermediate plate. Two fixing frames are fixedly connected to the top of the positioning blocks. The packing is placed in the gap between the two fixing frames, at which point the top fixing frame and support... The packing material can be fixed from above to prevent it from floating or shifting due to the upward force of the airflow, ensuring a uniform thickness of the packing layer and avoiding local voids that could affect the treatment effect. At the same time, the mesh holes between the supports ensure that the exhaust gas passes through smoothly while reducing the impact of the airflow on the packing layer, maintaining the stability of the internal structure of the filter media layer, and extending the service life of the packing material. The two fixing frames are symmetrically arranged vertically, and the internal of the fixing frames is fixedly connected to the supports. The mesh supports form a three-dimensional support network in the middle of the fixing frames with a cross-shaped structure, which can evenly distribute the weight of the packing material, the impact of the airflow, and other external forces to each support point of the fixing frames, avoiding deformation or breakage of the supports caused by local stress concentration.Simultaneously, the grid structure can constrain the packing material horizontally and vertically, preventing lateral displacement or longitudinal accumulation due to equipment vibration and airflow disturbance. This ensures the filter layer maintains a uniform thickness and bulkiness, providing a stable structural foundation for subsequent gas-liquid mass transfer and microbial reactions. The grid-like support plate bears the weight of the packing material, preventing reduced permeability due to compaction caused by its own weight through evenly distributed support points. Furthermore, the grid-like support plate supports the top packing material, dispersing its weight through the plate's surface area and preventing particles from leaking out through the support gaps. The optimized pore size and density of the holes on the support plate create a secondary air distribution synergy with the bottom airflow distribution structure, allowing airflow to enter the packing layer at a more uniform speed and in a more dispersed manner. This improves the contact efficiency between the exhaust gas and microorganisms on the packing surface, enhancing the overall operational stability of the filter layer. The number of supports... There are two supports, each located inside a fixed frame. The fixed frame closest to the positioning block has a slanted groove on its opposite side. Multiple slanted grooves are evenly distributed along the edge of the fixed frame. A protrusion is fixedly connected to the upper fixed frame near the slanted groove. A fixed column is fixedly connected at the intersection of the supports. The fixed column and cylinder serve as the core positioning reference between the upper and lower supports. The conical column on the opposite side uses its pointed tip positioning and inclined surface guidance to ensure that the upper and lower supports remain coaxial, avoiding problems such as filter layer displacement and spray pipe misalignment due to positioning deviations, thus ensuring the installation accuracy of all equipment components. A conical column is located at the top of the fixed column, and a cylinder is fixedly connected at the intersection of the supports. The fixed column and cylinder are located on two supports in the vertical direction. A locking block is fixedly connected to the inner wall of the support. A support plate is installed inside the support, and multiple holes are opened on the outer side of the support plate.

[0010] This invention provides a waste gas treatment device. It has the following beneficial effects: (i) The waste gas treatment device can form a local throttling by having a small gap in the middle, and the large gap at both ends is conducive to the diffusion of gas to both sides, so that the airflow entering the device is more evenly distributed on the cross-section and avoids flow deviation.

[0011] (ii) The waste gas treatment device provides a reasonable diffusion boundary for the spray liquid through the annular space of the circular trough. When the first water pipe in the middle sprays outwards, the spray liquid can be evenly covered across the entire cross section of the circular trough by means of the obstruction and reflection of the inner wall of the circular trough, ensuring that each part of the waste gas can fully contact the spray liquid, which can more efficiently remove dust and soluble pollutants from the waste gas, or complete the temperature and humidity regulation, laying a better foundation for subsequent biological filter treatment.

[0012] (III) The waste gas treatment device can evenly distribute the waste gas entering the filter layer by setting the airflow distribution structure at the bottom of the intermediate plate and positioning block, avoiding the concentrated impact of airflow on a certain area to form a biased flow. Through reasonable opening ratio and flow guiding angle design, the waste gas passes through the entire filter layer cross section at a stable and uniform speed, ensuring that each part of the packing can fully contact the waste gas.

[0013] (iv) The waste gas treatment device can guide the rising odorous gas through the inclined inner wall of the conical hole, so that the gas flows out of the hole in a diffuse and uniform manner, avoiding the situation where some packing layers are overloaded due to local airflow concentration. This allows the odorous gas to fully contact the biofilm on the surface of the packing, providing more sufficient reaction conditions for microbial degradation, indirectly improving the overall deodorization efficiency, and reducing treatment dead zones caused by uneven gas distribution. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a partial cross-sectional structural schematic diagram of the present invention; Figure 3 This is a schematic diagram of the airflow distributor of the present invention; Figure 4 This is a cross-sectional structural schematic diagram of the airflow distributor of the present invention; Figure 5 This is a cross-sectional structural schematic diagram of the box body of the present invention; Figure 6 This is a schematic diagram of the structure of the spray assembly of the present invention; Figure 7 This is a schematic diagram of the structure of the filter media layer of the present invention; Figure 8 This is a cross-sectional structural schematic diagram of the filter media layer of the present invention; Figure 9 This is a partial structural diagram of the filter media layer of the present invention; Figure 10 This is a partial top-view structural diagram of the filter media layer of the present invention.

[0015] In the diagram: 1. Box body; 11. Shell; 12. Partition; 13. Baffle; 14. Guide plate; 15. Vertical plate; 16. Spray assembly; 161. Water inlet pipe; 162. First water pipe; 163. Connecting pipe; 164. Second water pipe; 17. Inclined plate; 2. Air inlet pipe; 3. Tail gas treatment tower; 4. Gas-water separator; 5. Airflow distributor; 51. Fixing plate; 52. Fixing block; 53. Through hole; 54. Circular groove; 55. V-shaped block; 56. Inclined plate; 6. Filter media layer; 61. Intermediate plate; 62. Positioning block; 63. Fixing frame; 64. Protrusion; 65. Trapezoidal block; 66. Conical hole; 67. Fixing column; 68. Cylinder; 69. Support plate; 610. Locking block; 611. Bracket; 612. Inclined groove. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] First embodiment, such as Figures 1 to 4 As shown, the present invention provides a technical solution: a waste gas treatment device, comprising: a box 1, an air inlet pipe 2 fixedly connected to the top of the box 1, an airflow distributor 5 fixedly connected to the interior of the box 1 near the air inlet pipe 2, and a filter layer 6 fixedly connected to the end of the box 1 away from the airflow distributor 5. The steam-water separator 4 is connected to the top of the housing 1 away from the air inlet pipe 2 via a pipe. The exhaust gas treatment tower 3 is fixedly connected to the output end of the steam-water separator 4 via an intermediate pipe. The airflow distributor 5 includes two fixed plates 51, with fixed blocks 52 fixedly connected to opposite sides of each fixed plate 51. The two fixed plates 51 are symmetrically arranged with the fixed blocks 52 as the center. Exhaust gas enters the interior of the housing 11 through the air inlet pipe 2, allowing the exhaust gas to enter the gap between the partition 12 and the housing 11. Subsequently, the exhaust gas passes through the gap between two adjacent fixed blocks 52 and finally flows downward from the through hole 53 at the bottom. At the same time, water enters through the water inlet pipe 161, allowing the water inside the water inlet pipe 161 to enter the interior of the first water pipe 162, thereby bringing the water into contact with the exhaust gas. By making the gap between the fixed blocks 52 smaller in the middle and gradually increasing towards both ends, the smaller gap in the middle can form a local throttling effect, while the larger gap at both ends... This facilitates the diffusion of gas to both sides, resulting in a more uniform distribution of the airflow entering the equipment across the cross-section, preventing flow deviation. At the same time, the annular space of the circular groove provides a reasonable diffusion boundary for the spray liquid. When the first water pipe 162 in the middle sprays outwards, the spray liquid can be evenly covered across the entire cross-section of the circular groove by means of the obstruction and reflection of the inner wall of the circular groove, ensuring that each part of the exhaust gas can fully contact the spray liquid, which can more efficiently remove dust and soluble pollutants from the exhaust gas, or complete temperature and humidity regulation, laying a better foundation for subsequent biological filter treatment. There are multiple fixed blocks 52, which form multiple gaps, and the gaps gradually increase from the middle to both ends of the fixed plate 51. The top two sides of the fixed blocks 52 are chamfered.

[0018] A through hole 53 is provided at the bottom of the fixed plate 51. The through hole 53 is located in the gap between the two fixed blocks 52. There are multiple through holes 53, which are evenly distributed on the fixed plate 51. A circular groove 54 is provided in the middle of the inside of the through hole 53. The circular grooves 54 are symmetrically arranged on both sides of the inside of the through hole 53. The through hole 53 completely penetrates the two fixed plates 51 along the thickness direction. V-shaped blocks 55 are fixedly connected to the opposite sides of the fixed plates 51. The inverted V-shaped blocks 55 serve as the central diversion core, which can evenly guide the airflow entering the gap to both sides and avoid... The concentrated airflow impacts a certain area, forming a deflection flow; the inclined plates 56 on both sides further receive the airflow after the diversion, and guide the airflow to flow smoothly downward along the plate surface through the tilt angle, so that the airflow forms an orderly path of central diversion and lateral guidance within the entire gap section, improving the uniformity of airflow distribution and laying a stable foundation for subsequent processing. The V-shaped block 55 is set up inverted and is located at the interval between two adjacent fixed blocks 52. The inclined plate 56 is fixedly connected to the side of the fixed block 52 near the V-shaped block 55. The inclined plate 56 is symmetrically arranged with the V-shaped block 55 as the center.

[0019] The second embodiment is based on the first embodiment; please refer to [link / reference]. Figures 5 to 6As shown, the housing 1 includes a shell 11, the top of which is fixedly connected to the air inlet pipe 2. A partition 12 is fixedly connected inside the shell 11, with a gap between the partition 12 and the shell 11. A spray assembly 16 is installed inside the shell 11. The partition 12 is located near the end of the air inlet pipe 2. An airflow distributor 5 is located at the gap between the partition 12 and the shell 11. Two fixing plates 51 are fixedly connected to the inner wall of the shell 11 and the outer side of the partition 12, respectively. A guide plate 14 is fixedly connected to the side of the partition 12 near the airflow distributor 5. The airflow through the airflow distributor 5 continues to flow downwards, and the exhaust gas... Some of the gas in the process will liquefy after humidification and spraying. At this time, the guide plate 14, with its inclined structure, can effectively intercept the droplets. After the droplets come into contact with the surface of the guide plate 14, they will flow downward along the plate surface under the action of gravity, preventing them from continuing to move forward with the airflow. At the same time, the bottom baffle 13 prevents the droplets from entering the path of subsequent processes, further improving the gas-liquid separation efficiency, reducing the amount of liquid carried by the airflow entering subsequent processes, and reducing the risk of corrosion and blockage to downstream equipment. The baffle 13 is fixedly connected to the bottom of the inner wall of the housing 11. The guide plate 14 is inclined, and the guide plate 14 is inclined from top to bottom from the partition 12 to the baffle 13. The baffle 13 is located above the guide plate 14. Multiple vertical plates 15 are fixedly connected inside the housing 11. The vertical plates 15 are located on the side of the partition 12 away from the airflow distributor 5. These vertical plates 15 are evenly arranged between the housing 11 and the partition 12. An inclined plate 17 is fixedly connected inside the housing 11. The vertical plates 15 serve as the guiding boundary for the spray liquid ejected from the second water pipe 164, preventing the spray liquid from spreading to the edge of the equipment and causing waste. The spray pipes between adjacent vertical plates 15 spray directly onto the filter media layer 6 below, allowing the spray liquid to fall precisely into the filter media layer, ensuring that each filter media layer... All can be evenly moistened, preventing the filter layer 6 from experiencing a decrease in microbial activity due to local water shortage or affecting air permeability due to excessive water accumulation. This maintains the filter layer 6 in a suitable humidity environment for microbial survival, ensuring stable deodorization effect. At the same time, the reflection effect of the inclined plate 17 on the spray liquid further recovers the spray liquid to the filter area, improving the utilization rate of the spray liquid. There are multiple inclined plates 17, with two inclined plates 17 forming a group. The inclined plates 17 in a group are symmetrically arranged with the vertical plate 15 as the center. The inclined plates 17 are arranged from the top of the vertical plate 15 to the middle of the two vertical plates 15 in an upward inclined direction.

[0020] The spray assembly 16 includes a water inlet pipe 161 located inside the partition 12. A first water pipe 162 is fixedly connected to the bottom outer side of the water inlet pipe 161. The first water pipe 162 is L-shaped and has a hole on its outer side. The side of the first water pipe 162 away from the water inlet pipe 161 is located in the gap between the partition 12 and the housing 11, and the first water pipe 162 is located inside the circular groove 54 of the through hole 53. There are multiple first water pipes 162. The water inlet pipe 163 is fixedly connected to the outside of the water inlet pipe 161. The connecting pipe 163 is perpendicular to the partition 12. The second water pipe 164 is fixedly connected to the outside of the connecting pipe 163. The bottom of the outside of the second water pipe 164 has a hole. The second water pipe 164 is perpendicular to the connecting pipe 163. The second water pipe 164 is located at the interval between two adjacent vertical plates 15. There are multiple second water pipes 164, and the multiple second water pipes 164 are evenly arranged on the connecting pipe 163.

[0021] The third embodiment is based on embodiments one and two; please refer to [link / reference]. Figures 7 to 10As shown, the filter layer 6 includes multiple intermediate plates 61. The intermediate plates 61 are perpendicular to the partition plates 12. The bottom of the intermediate plates 61 is fixedly connected to the bottom of the inner wall of the housing 11. Both ends of the intermediate plates 61 are fixedly connected to one side of the partition plate 12 and the inner wall of the housing 11, respectively. A positioning block 62 is fixedly connected to the top of the intermediate plates 61, and trapezoidal blocks 65 are fixedly connected to the opposite sides of the intermediate plates 61. The humidified exhaust gas enters the gap between the partition plate 12 (away from the guide plate 14) and the housing 11 through the baffle 13. Subsequently, the exhaust gas enters the gap between the multiple intermediate plates 61, allowing it to contact the packing material inside the fixed frame 63 through the conical holes 66 of the positioning blocks 62. This is achieved by setting the airflow at the bottom of the intermediate plates 61 and the positioning blocks 62. The distribution structure evenly distributes the waste gas entering the filter layer, preventing concentrated airflow from impacting a certain area and causing flow deviation. Through reasonable opening ratio and guide angle design, the waste gas passes through the entire filter layer cross-section at a stable and uniform speed, ensuring that each part of the packing material can fully contact the waste gas. This eliminates dead zones and unreacted packing areas caused by uneven airflow distribution, significantly improving the degradation efficiency of odorous substances by microorganisms and providing a core guarantee for the overall treatment effect of the filter layer. Multiple trapezoidal blocks 65 are evenly arranged on the intermediate plate 61. The positioning block 62 has a conical hole 66 inside. The top opening of the conical hole 66 is large, and the inclined inner wall of the conical hole 66 can guide the rising odorous gas, allowing the gas to pass through smoothly and evenly. When the gas flows out of the orifice, it diffuses evenly in a divergent manner, avoiding the situation where some packing layers are overloaded due to localized airflow concentration. This allows the odorous gas to fully contact the biofilm on the surface of the packing, providing more sufficient reaction conditions for microbial degradation, indirectly improving the overall deodorization efficiency, and reducing treatment dead zones caused by uneven gas distribution. At the same time, the liquid generated during the operation of the biological filter can flow quickly downwards along the inner wall of the conical hole 66, preventing water accumulation at the top of the plate. The conical hole 66 is located at the interval between two adjacent trapezoidal blocks 65 on an intermediate plate 61. The top of the positioning block 62 is fixedly connected to a fixing frame 63. There are two fixing frames 63. When the packing is placed in the interval between the two fixing frames 63, the top fixing frame 63 is fixed. The support frame 611 can fix the packing from above, preventing it from floating or shifting due to the upward force of the airflow, ensuring the uniform thickness of the packing layer, and avoiding local voids that affect the treatment effect. At the same time, the mesh holes between the supports 611 ensure that the exhaust gas passes through smoothly while reducing the impact of the airflow on the packing layer, maintaining the stability of the internal structure of the filter layer, and extending the service life of the packing. The two fixing frames 63 are symmetrically arranged in the vertical direction, and the supports 611 are fixedly connected inside the fixing frames 63. The mesh-like supports 611 form a three-dimensional support network in the middle of the fixing frame with a cross-shaped structure, which can evenly distribute the weight of the packing, the impact of the airflow, and other external forces to each support point of the fixing frame 63, avoiding deformation or breakage of the supports 611 caused by local stress concentration.Simultaneously, the grid structure can constrain the packing material in both horizontal and vertical directions, preventing lateral displacement or longitudinal accumulation due to equipment vibration and airflow disturbance. This ensures the filter layer maintains a uniform thickness and bulkiness, providing a stable structural foundation for subsequent gas-liquid mass transfer and microbial reactions. The support plate 611 is grid-structured. On one hand, the support plate bears the weight of the packing material, and through evenly distributed support points, it prevents the packing material from becoming compacted due to its own weight, thus reducing air permeability. On the other hand, the support plate 69, supported by the grid-like support plate 611, supports the top packing material. The weight of the packing material is distributed through the bearing area of ​​the plate surface, preventing packing particles from leaking out from the gaps in the support plate 611. At the same time, the holes on the support plate 69, with optimized pore size and distribution density, can form a secondary air distribution synergy with the bottom airflow distribution structure, allowing the airflow to enter the packing layer upwards at a more uniform speed and in a more dispersed form. This improves the contact efficiency between the exhaust gas and the microorganisms on the packing surface, enhancing the overall operational stability of the filter layer. There are two supports 611, located inside the two fixed frames 63 respectively. A plurality of inclined grooves 612 are provided on the opposite side of one of the fixing frames 63 near the positioning block 62. The inclined grooves 612 are evenly distributed along the edge of the fixing frame 63. A protrusion 64 is fixedly connected to the side of the upper fixing frame 63 near the inclined groove 612. A fixing post 67 is fixedly connected at the intersection of the brackets 611. The fixing post 67 and the cylinder 68 serve as the core positioning reference between the upper and lower brackets 611. The conical column on the opposite side uses the characteristics of positioning with its pointed tip and guiding with its inclined surface. To ensure that the upper and lower supports 611 remain coaxial, avoid problems such as filter layer displacement and spray pipe misalignment caused by positioning deviation, and ensure the installation accuracy of each component of the equipment, the top of the fixed column 67 is provided with a conical column, and a cylinder 68 is fixedly connected at the intersection of the supports 611. The fixed column 67 and the cylinder 68 are respectively located on two supports 611 in the vertical direction. A locking block 610 is fixedly connected to the inner wall of the support 611. A support plate 69 is installed inside the support 611. The support plate 69 has holes on its outer side. There are multiple support plates 69.

[0022] In use, exhaust gas is introduced into the interior of housing 11 through air inlet pipe 2, allowing the exhaust gas to enter the gap between partition 12 and housing 11. Then, the exhaust gas passes through the gap between two adjacent fixed blocks 52 and finally flows downward from the through hole 53 at the bottom. At the same time, water enters through water inlet pipe 161, allowing the water inside water inlet pipe 161 to enter the interior of first water pipe 162, thereby allowing water to come into contact with exhaust gas.

[0023] The airflow continues to flow downward through the airflow distributor 5. Some of the gas in the exhaust gas will liquefy after being humidified and sprayed. At this time, the guide plate 14 can effectively intercept the droplets by using its inclined structure. After the droplets come into contact with the surface of the guide plate 14, they will flow downward along the plate surface under the action of gravity.

[0024] The humidified exhaust gas enters the gap between the partition 12 and the shell 11 on the side away from the guide plate 14 through the baffle 13. Then the exhaust gas enters the gap between multiple intermediate plates 61, so that the exhaust gas comes into contact with the packing inside the fixed frame 63 through the conical hole 66 of the positioning block 62. It is then discharged from the pipe into the steam-water separator 4, and finally enters the tail gas treatment tower 3 through the intermediate pipe for treatment before being discharged.

[0025] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0026] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A waste gas treatment device, characterized in that, include: Box (1), the top of the box (1) is fixedly connected to an air inlet pipe (2), the inside of the box (1) near the air inlet pipe (2) is fixedly connected to an airflow distributor (5), and the end of the box (1) away from the airflow distributor (5) is fixedly connected to a filter layer (6). A steam-water separator (4) is connected to the top of the housing (1) away from the air inlet pipe (2) via a pipe. The exhaust gas treatment tower (3) is fixedly connected to the output end of the steam-water separator (4) through an intermediate pipe; The airflow distributor (5) includes a fixed plate (51), there are two fixed plates (51), and fixed blocks (52) are fixedly connected to the opposite sides of the fixed plates (51). The two fixed plates (51) are symmetrically arranged with the fixed blocks (52) as the center. There are multiple fixed blocks (52), and the multiple fixed blocks (52) form multiple gaps. The gaps gradually increase from the middle to both ends of the fixed plates (51). The top two sides of the fixed blocks (52) are chamfered.

2. The waste gas treatment device according to claim 1, characterized in that: The bottom of the fixing plate (51) is provided with a through hole (53). The through hole (53) is located in the gap between the two fixing blocks (52). There are multiple through holes (53), which are evenly distributed on the fixing plate (51). A circular groove (54) is provided in the middle of the inside of the through hole (53). The circular groove (54) is symmetrically arranged on both sides inside the through hole (53).

3. The waste gas treatment device according to claim 2, characterized in that: The through hole (53) completely penetrates the two fixing plates (51) along the thickness direction of the fixing plate (51). A V-shaped block (55) is fixedly connected to the opposite side of the fixing plate (51). The V-shaped block (55) is inverted and located at the interval between two adjacent fixing blocks (52). An inclined plate (56) is fixedly connected to the side of the fixing block (52) near the V-shaped block (55). The inclined plate (56) is symmetrically arranged with the V-shaped block (55) as the center.

4. The waste gas treatment device according to claim 1, characterized in that: The housing (1) includes a shell (11), the top of which is fixedly connected to the air inlet pipe (2), a partition (12) is fixedly connected inside the shell (11), a spray assembly (16) is provided inside the shell (11), the partition (12) is located at one end near the air inlet pipe (2), the airflow distributor (5) is located at the gap between the partition (12) and the shell (11), two fixed plates (51) are fixedly connected to the inner wall of the shell (11) and the outer side of the partition (12) respectively, a guide plate (14) is fixedly connected to the side of the partition (12) near the airflow distributor (5), a baffle (13) is fixedly connected to the bottom of the inner wall of the shell (11), the guide plate (14) is inclined, the guide plate (14) is inclined from top to bottom from the partition (12) to the baffle (13), and the baffle (13) is located above the guide plate (14).

5. The waste gas treatment device according to claim 4, characterized in that: The shell (11) is fixedly connected to a vertical plate (15). There are multiple vertical plates (15). The vertical plates (15) are located on the side of the partition (12) away from the airflow distributor (5). Multiple vertical plates (15) are evenly arranged at the interval between the shell (11) and the partition (12). The shell (11) is fixedly connected to an inclined plate (17). There are multiple inclined plates (17). Two inclined plates (17) are divided into a group. The group of inclined plates (17) is symmetrically arranged with the vertical plate (15) as the center. The inclined plates (17) are arranged in an inclined direction from the top of the vertical plate (15) to the middle of the two vertical plates (15) from bottom to top.

6. The waste gas treatment device according to claim 5, characterized in that: The spray assembly (16) includes a water inlet pipe (161), which is located inside the partition (12). A first water pipe (162) is fixedly connected to the bottom outer side of the water inlet pipe (161). The first water pipe (162) is L-shaped. The side of the first water pipe (162) away from the water inlet pipe (161) is located at the gap between the partition (12) and the housing (11). The first water pipe (162) is located inside the circular groove (54) of the through hole (53). There are multiple first water pipes (162), and the multiple first water pipes (162) are evenly arranged on the water inlet pipe (161).

7. The waste gas treatment device according to claim 6, characterized in that: A connecting pipe (163) is fixedly connected to the outside of the water inlet pipe (161). The connecting pipe (163) is perpendicular to the partition (12). A second water pipe (164) is fixedly connected to the outside of the connecting pipe (163). The second water pipe (164) is perpendicular to the connecting pipe (163). The second water pipe (164) is located at the interval between two adjacent vertical plates (15). There are multiple second water pipes (164), and multiple second water pipes (164) are evenly arranged on the connecting pipe (163).

8. The waste gas treatment device according to claim 1, characterized in that: The filter media layer (6) includes an intermediate plate (61), and there are multiple intermediate plates (61). The intermediate plates (61) are arranged perpendicularly to the partition (12). The bottom of the intermediate plate (61) is fixedly connected to the bottom of the inner wall of the shell (11). The two ends of the intermediate plate (61) are fixedly connected to one side of the partition (12) and the inner wall of the shell (11), respectively. A positioning block (62) is fixedly connected to the top of the intermediate plate (61). A trapezoidal block (65) is fixedly connected to the opposite side of the intermediate plate (61). There are multiple trapezoidal blocks (65). The multiple trapezoidal blocks (65) are evenly arranged on the intermediate plate (61). A conical hole (66) is opened inside the positioning block (62). The conical hole (66) is located at the interval between two adjacent trapezoidal blocks (65) on an intermediate plate (61).

9. The waste gas treatment device according to claim 8, characterized in that: The top of the positioning block (62) is fixedly connected to a fixing frame (63). There are two fixing frames (63), which are symmetrically arranged in the vertical direction. A bracket (611) is fixedly connected inside the fixing frame (63). There are two brackets (611), which are located inside the two fixing frames (63). A sloping groove (612) is opened on the opposite side of the fixing frame (63) near the positioning block (62). There are multiple sloping grooves (612), which are evenly distributed on the edge of the fixing frame (63). A protrusion (64) is fixedly connected to the side of the upper fixing frame (63) near the sloping groove (612).

10. The waste gas treatment device according to claim 9, characterized in that: A fixed column (67) is fixedly connected to the intersection of the brackets (611), and a cylinder (68) is fixedly connected to the intersection of the brackets (611). The fixed column (67) and the cylinder (68) are respectively located on two brackets (611) in the vertical direction. A locking block (610) is fixedly connected to the inner wall of the bracket (611). A support plate (69) is installed inside the bracket (611), and there are multiple support plates (69).

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