Deep spray purification system for exhaust gas based on tantalum-niobium decomposition

Abstract

The present application belongs to the technical field of waste gas spray purification, and particularly relates to a waste gas deep spray purification system based on tantalum-niobium decomposition, which comprises a spray tower body, two groups of spray assemblies and two groups of filler assemblies are arranged in the spray tower body, and the two groups of spray assemblies and the two groups of filler assemblies are distributed in an up-and-down staggered mode. The filler assembly comprises an outer annular plate coaxially and fixedly arranged on the inner wall of the spray tower body, an inner annular plate coaxially and fixedly arranged in the outer annular plate through a plurality of connecting plates, and a lifting bearing plate arranged in the inner annular plate and used to bear fillers, and a main purification zone is formed between the upper side of the lifting bearing plate and the inner annular plate. The present application realizes effective and thorough cleaning of the deep layer area of the fillers, reduces the large consumption of water resources and time caused by the extension of the washing time and the increase of the cleaning frequency in the traditional mode for making up for the insufficient cleaning, realizes the quality improvement and efficiency increase of the cleaning process, and reduces the downtime.

Description

Technical Field

[0001] This invention belongs to the field of waste gas spray purification technology, and particularly relates to a deep spray purification system for waste gas based on tantalum-niobium decomposition. Background Technology

[0002] Potassium fluorotantalate and niobium oxide are key compounds in the tantalum-niobium metallurgical industry chain, and both can be decomposed through specific processes. The waste gas generated from the wet decomposition process of tantalum-niobium is often subjected to deep purification using a spray tower, where the packing layer is the core component for enhancing gas-liquid contact and improving purification efficiency. To ensure treatment effectiveness, the packing layer is usually designed to be relatively thick to increase the contact area and reaction time.

[0003] Currently, the packing bed is mainly maintained through regular online backwashing, and in special circumstances, it requires shutdown for manual deep cleaning. Both methods rely on a fixed packing bed structure, using top-down water flow or manual cleaning to remove surface and shallow impurities.

[0004] However, due to the thickness and compact structure of the packing layer, neither backflushing nor manual cleaning can effectively remove the dirt and solid impurities accumulated in the deep layers of the packing. This problem leads to incomplete cleaning, forcing the increase of cleaning frequency and rinsing time to compensate, which not only increases water consumption but also prolongs system downtime, affecting continuous production efficiency. Therefore, the contradiction between existing cleaning methods and the packing structure has become a major problem in the operation and maintenance of this system. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides a deep spray purification system for exhaust gas based on tantalum-niobium decomposition, which solves the problems mentioned in the background section.

[0006] To achieve the above objectives, this application provides the following technical solution: The present invention provides a deep spray purification system for waste gas based on tantalum-niobium decomposition, comprising a spray tower body. Two sets of spray components and two sets of packing components are disposed within the spray tower body, with the two sets of spray components and packing components arranged alternately vertically. Each packing component includes an outer annular plate coaxially fixed to the inner wall of the spray tower body. An inner annular plate is coaxially fixed to the outer annular plate via multiple connecting plates. A lifting support plate for supporting the packing is disposed inside the inner annular plate. A main purification zone is formed between the upper side of the lifting support plate and the inner annular plate. A lifting support ring is jointly disposed between the inner wall of the outer annular plate and the outer wall of the inner annular plate. The inner wall of the outer annular plate, the outer wall of the inner annular plate, and the upper side of the lifting support ring together form a clean zone. The lifting support plate moves upward, lifting the packing in the main purification zone, reducing the thickness of the main purification zone and causing some packing to slide into the clean zone. The lifting support ring moves downward, increasing the depth of the clean zone to allow more packing to enter. A drive rotation component is provided between the spray assembly and the corresponding lifting support plate. A self-cleaning component is provided on the lower side of the lifting support plate. A drive lifting component is provided between the self-cleaning component and the spray tower body. The rotation of the lifting support plate cooperates with the corresponding spray assembly above to spray, purify, and rinse the packing material on the lifting support plate. The rotation of the lifting support plate synchronously drives the self-cleaning component to rotate and circulate to clean the packing material in the cleaning area.

[0007] According to an advantageous embodiment, the spray assembly includes an annular spray frame coaxially fixed to the inner wall of the spray tower, and the annular spray frame is provided with multiple sets of purification nozzles evenly distributed along its circumference, with the multiple purification nozzles of each set evenly distributed along the radial direction of the annular spray frame.

[0008] According to an advantageous embodiment, the surfaces of the inner annular plate, the outer annular plate, the lifting bearing plate, and the lifting bearing ring are all densely covered with sieve holes for filtering sewage.

[0009] According to an advantageous embodiment, the drive rotation assembly includes a transmission seat fixedly disposed on the upper center of the lifting bearing plate, a drive motor fixedly disposed on the upper center of the annular spray frame, a transmission shaft fixedly connected to the output shaft of the drive motor, and the transmission shaft and the transmission seat being connected by a spline.

[0010] According to an advantageous embodiment, the self-cleaning assembly includes a central tube fixedly disposed on the lower middle part of the lifting support plate, and multiple self-cleaning nozzles are fixedly connected to the central tube via multiple branch pipes. A transfer connector is slidably inserted into the lower end of the central tube, and the other end of the transfer connector is connected to an external water supply device.

[0011] According to an advantageous embodiment, the drive lifting assembly includes a horizontal plate fixedly installed on the inner wall of the spray tower, a first lifting cylinder fixedly installed on the horizontal plate by a bracket, a rotating disk fixedly installed at the telescopic end of the first lifting cylinder, and the rotating disk fixedly connected to the intermediate transfer joint.

[0012] According to an advantageous embodiment, two second lifting cylinders are symmetrically fixedly arranged on both sides of the horizontal plate, and the telescopic ends of the second lifting cylinders are fixedly connected to the corresponding lifting bearing rings above.

[0013] According to an advantageous embodiment, an inner groove is provided on the inner wall of the spray tower body, in the area corresponding to each self-cleaning component.

[0014] Compared with existing technologies, the waste gas deep spray purification system based on tantalum-niobium decomposition provided in this invention has the following beneficial effects: In this invention, by dividing the overall thick packing layer into a main purification zone and a clean zone, and designing a liftable support plate and support ring, the thickness of the packing is dynamically adjusted in the vertical direction. During cleaning, by raising the support plate and lowering the support ring, the deep packing is transferred to the clean zone, making the edges of the deep packing in the main purification zone thinner, exposing the originally tightly packed deep packing to the effective cleaning range. This overcomes the physical barrier of cleaning fluid's inability to penetrate a thick packing layer from a structural perspective, achieving effective and thorough cleaning of the deep areas of the packing. Because the packing layer becomes thinner overall during cleaning, the penetration resistance of the cleaning fluid is greatly reduced, and the coverage uniformity is improved, whether the main purification zone is vertically rinsed from top to bottom or the clean zone is horizontally rinsed. This allows for better cleaning results in a shorter time. This directly reduces the large consumption of water resources and time caused by the traditional method of extending rinsing time and increasing cleaning frequency to compensate for insufficient cleaning, achieving improved quality and efficiency in the cleaning process, while reducing downtime. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the external three-dimensional structure of the present invention.

[0016] Figure 2 This is a first-view three-dimensional cross-sectional structural diagram of the tower body in this invention.

[0017] Figure 3 This is a schematic diagram of the second-view three-dimensional cross-sectional structure of the tower body in this invention.

[0018] Figure 4 This is a schematic diagram of the external three-dimensional cross-sectional structure of the tower body, packing assembly, drive rotation assembly, and drive lifting assembly in this invention.

[0019] Figure 5 This is a schematic diagram of the packing assembly during purification in this invention.

[0020] Figure 6 This is a schematic diagram of the packing assembly in the present invention during cleaning.

[0021] The attached diagram shows the following labels: 1. Spray tower body; 2. Spray assembly; 3. Packing assembly; 31. Outer annular plate; 32. Inner annular plate; 33. Lifting support plate; 34. Lifting support ring; 4. Main purification zone; 5. Clean zone; 6. Drive rotation assembly; 61. Transmission seat; 62. Drive motor; 63. Transmission shaft; 7. Self-cleaning assembly; 71. Central tube; 72. Self-cleaning nozzle; 73. Transfer joint; 8. Drive lifting assembly; 81. Horizontal plate; 82. Lifting cylinder No. 1; 83. Rotating disc; 9. Lifting cylinder No. 2; 10. Inner groove. Detailed Implementation

[0022] The following is in conjunction with the appendix Figure 1 -Appendix Figure 6 This application will now be described in further detail.

[0023] Please refer to the following: Figures 1-3 The waste gas deep spray purification system based on tantalum-niobium decomposition includes a spray tower 1, 8 meters high and 3 meters in diameter, made of carbon steel lined with FRP material, which has good corrosion resistance. An air inlet is located on the lower side of the spray tower 1, connecting to an external cooling tower via an inlet pipe. An outlet pipe at the upper end connects to a fan, allowing the waste gas inside the spray tower to flow upwards. The spray tower 1 contains two sets of spray components 2 and two sets of packing components 3, arranged alternately. The waste gas enters the spray tower 1 from the bottom, passes through two layers of packing, and comes into contact with the sprayed purification liquid for purification.

[0024] See Figures 2-4 The spray assembly 2 includes an annular spray frame coaxially fixed to the inner wall of the spray tower 1. Multiple sets of purification nozzles are evenly distributed circumferentially on the annular spray frame, with each set of nozzles evenly distributed radially along the annular spray frame. The purification nozzles are supplied with purification liquid by an external conveying device and can also be connected to an external cleaning water supply device to supply cleaning liquid for cleaning. The specific structure is a conventional technique for those skilled in the art and therefore is not described in detail in this solution.

[0025] See Figures 3-6The packing assembly 3 includes an outer annular plate 31 coaxially fixed to the inner wall of the spray tower body 1. An inner annular plate 32 is coaxially fixed to the outer annular plate 31 via multiple connecting plates. A lifting support plate 33 is disposed inside the inner annular plate 32. The upper side of the lifting support plate 33 and the inner annular plate 32 form a main purification zone 4 for filling with packing material. The main purification zone 4 has a disc structure. A lifting support ring 34 is jointly disposed between the inner wall of the outer annular plate 31 and the outer wall of the inner annular plate 32. The inner wall of the outer annular plate 31, the outer wall of the inner annular plate 32, and the upper side of the lifting support ring 34 together form a clean zone 5 for filling with packing material. The clean zone 5 has a circular structure. The upward movement of the lifting support plate 33 lifts the packing material in the main purification zone 4, reducing the depth of the main purification zone 4 and causing some packing material to slide into the clean zone 5. The downward movement of the lifting support ring 34 increases the depth of the clean zone 5, allowing more packing material to enter the clean zone 5. The inner ring plate 32, outer ring plate 31, lifting bearing plate 33, and lifting bearing ring 34 are all densely covered with screen holes for filtering sewage, and each component is treated with anti-corrosion measures.

[0026] See Figure 3 and Figure 4 A drive rotation component 6 is provided between the annular spray frame and the corresponding lifting support plate 33. A self-cleaning component 7 is provided on the lower side of the lifting support plate 33. A drive lifting component 8 is provided between the self-cleaning component 7 and the spray tower body 1. The lifting support plate 33 rotates and cooperates with the corresponding purification nozzle above to spray and clean the packing on the lifting support plate 33. The rotation of the lifting support plate 33 synchronously drives the self-cleaning component 7 to rotate and circulate to clean the packing in the cleaning area 5.

[0027] In actual operation, under normal conditions, the heights of the lifting support plate 33 and the lifting support ring 34 in the same area are basically the same, thus ensuring that the clean zone 5 and the main purification zone 4 are at the same vertical depth. At this time, the packing material in the clean zone 5 and the packing material in the main purification zone 4 together fill the spray tower body 1 to form a packing layer of predetermined thickness, purifying the exhaust gas. Figure 5 As shown.

[0028] When the packing layer needs to be cleaned, the lifting bearing ring 34 is first moved downward a certain distance, so that the packing inside the cleaning area 5, which was originally at the same height as the main purification area 4, moves downward, expanding the vertical space of the cleaning area 5, and at the same time reserving enough space in the upper part of the cleaning area 5.

[0029] Next, the drive rotation assembly 6 and the drive lifting assembly 8 work together to control the lifting support plate 33 to move upward while rotating, causing the packing material in the main purification zone 4 to move upward. When the uppermost packing material in the main purification zone 4 passes the upper port of the inner annular plate 32, the edge packing material, freed from the constraint of the inner annular plate 32, will slide down from the upper port of the inner annular plate 32 into the reserved space in the cleaning zone 5. Furthermore, due to the continuous rotation of the lifting support plate 33, the packing material in the middle of the main purification zone 4 will spread towards the edge more quickly, ensuring that the packing material in all areas of the main purification zone 4 is at as high a height as possible. As the lifting support plate 33 continues to move upward, the packing material in the main purification zone 4 will fill the reserved space in the cleaning zone 5. Figure 6 As shown.

[0030] Finally, the originally thick vertical packing material in the main purification zone 4 is thinned, and the excess packing material in the main purification zone 4 is poured into the cleaning zone 5. Since the cleaning zone 5 has a circular structure, the packing material is relatively thin in each horizontal direction within the cleaning zone 5. Then, the packing material in the main purification zone 4 is rinsed vertically downwards through the spray assembly 2 connected to an external water supply system. Simultaneously, the lifting support plate 33 drives the self-cleaning assembly 7 to rotate and circulate, horizontally spraying cleaning fluid into the cleaning zone 5 for rinsing. Because the packing material thickness is greatly reduced during rinsing, the cleaning fluid can rinse the packing surface more quickly and thoroughly. This improves cleaning quality while significantly shortening rinsing time. Furthermore, for spray towers with two or more packing layers, because the overall packing layer is thinner, compared to traditional, particularly thick and fixed packing layers, most of the wastewater generated during the cleaning process of the upper packing layers can more easily and quickly flow downwards, further accelerating the cleaning work of all packing layers within the entire spray tower.

[0031] After cleaning, the lifting support ring 34 moves upward while the lifting support plate 33 moves downward. The upward movement of the lifting support ring 34 raises the upper half of the packing material in the cleaning zone 5, while the downward movement of the lifting support plate 33 increases the depth of the main purification zone 4. This allows the packing material raised in the cleaning zone 5 to slide from the upper edge of the inner annular plate 32 into the main purification zone 4. Simultaneously, the lifting support plate 33 continues to rotate, promoting faster flattening of the packing material in the main purification zone 4. Alternatively, multiple levers can be installed along the circumference of the inner annular plate 32 near the upper end to further promote flattening of the packing material as the annular support plate rotates. When installing these levers, it must be ensured that they do not interfere with the upward movement of the lifting support plate 33. This structure is an extension of this solution and will not be described further.

[0032] See Figure 5 and Figure 6To ensure that the dirt washed from the cleaning zone 5 can be discharged smoothly, an inner groove 10 is provided on the inner wall of the spray tower body 1 in the area corresponding to each self-cleaning component 7. When the self-cleaning component 7 washes the cleaning zone 5 horizontally from the inside to the outside, a certain space is reserved on the outside of the cleaning zone 5 to facilitate the sewage to slide down the inner wall of the inner groove 10 after passing through the screen holes on the surface of each component.

[0033] It should be noted that the packing material is in bulk form, with the maximum height of the packing material in the main purification zone 4 being 1.2 meters. Furthermore, the packing material is made of PTFE (polytetrafluoroethylene) multifaceted hollow spheres, facilitating position adjustment via the lifting bearing plate 33 and the lifting bearing ring 34.

[0034] See Figure 4 and Figure 5 The drive rotation assembly 6 includes a transmission seat 61 fixedly disposed on the upper middle part of the lifting support plate 33. A drive motor 62 is fixedly disposed on the upper middle part of the annular spray frame. A transmission shaft 63 is fixedly connected to the output shaft of the drive motor 62. The transmission shaft 63 and the transmission seat 61 are connected by a spline. This connection method can realize that while the transmission shaft 63 drives the transmission seat 61 to rotate, the two slide relative to each other along the axial direction. The drive motor 62 drives the transmission shaft 63 to rotate, which in turn drives the corresponding lifting support plate 33 to rotate through the transmission seat 61.

[0035] See Figure 1 The self-cleaning component 7 includes a central pipe 71 fixedly installed in the middle of the lower side of the lifting support plate 33. Multiple self-cleaning nozzles 72 are fixedly connected to the central pipe 71 via multiple branch pipes. A transfer connector 73 is slidably inserted into the lower end of the central pipe 71, and the other end of the transfer connector 73 is connected to an external water supply device. The transfer connector 73 is connected to the external water supply device, and the transfer connector 73 and the central pipe 71 can rotate relative to each other. The connection between the two is sealed to prevent leakage of cleaning fluid. When the lifting support plate 33 rotates, it drives the central pipe 71 to rotate, causing the self-cleaning nozzles 72 to rotate circumferentially and rinse the inner side of the cleaning area 5.

[0036] See Figures 4-6 The lifting assembly 8 includes a horizontal plate 81 fixedly mounted on the inner wall of the spray tower body 1. A first lifting cylinder 82 is fixedly mounted on the horizontal plate 81 via a bracket. A rotating disk 83 is fixedly mounted on the telescopic end of the first lifting cylinder 82, and the rotating disk 83 is fixedly connected to the central connector 73. The rotating disk 83 is driven to rise by the first lifting cylinder 82, thereby driving the lifting support plate 33 to move upward through the central tube 71.

[0037] See Figure 4 and Figure 5Two lifting cylinders 9 are symmetrically fixed on both sides of the horizontal plate 81. The telescopic ends of the lifting cylinders 9 are fixedly connected to the corresponding lifting bearing rings 34 above. The same lifting bearing ring 34 moves up and down through the two lifting cylinders 9.

[0038] This solution addresses the pain point of traditional fixed thick packing layers, where deep-seated dirt is difficult to remove due to their large thickness and dense structure. It innovatively employs a zoned design with a main purification zone 4 and a cleaning zone 5, along with a dynamic packing transfer mechanism, to fundamentally solve the problem of incomplete cleaning. Under normal conditions, the packing in both zones works together to form a packing layer of predetermined thickness to ensure purification efficiency. During cleaning, the lifting support ring 34 moves downward to expand the volume, and the lifting support plate 33 moves upward and rotates, transferring a portion of the thick packing in the main purification zone 4 to the annular cleaning zone 5. This thins the packing layer, which was originally 1.2 meters thick vertically, during the cleaning phase in the main purification zone 4 (the specific thickness is adjusted comprehensively based on the packing layer thickness, the depth of the cleaning zone 5, and the horizontal cross-sectional length of the cleaning zone 5), resulting in a uniformly thin layer in the horizontal direction of the cleaning zone 5. Combined with the dual cleaning modes of vertical spraying in the main purification zone 4 and horizontal rotating spraying in the cleaning zone 5, the cleaning solution can fully penetrate to the deep layers of the packing, thoroughly removing accumulated dirt and solid impurities that traditional backwashing and manual cleaning cannot reach. This avoids purification efficiency degradation due to cleaning residue and significantly improves the long-term stability of the system.

[0039] This solution optimizes both resources and costs by improving cleaning efficiency. Firstly, because the packing material is cleaned more thoroughly, frequent backwashing or manual cleaning is unnecessary, significantly reducing the cleaning frequency. Secondly, the packing material thickness is significantly reduced during the cleaning phase, resulting in a more sufficient contact area between the cleaning solution and the packing material, drastically shortening the cleaning time per cycle and thus reducing equipment downtime. Simultaneously, wastewater generated during the cleaning of the upper packing layer can be quickly discharged through the screen holes and internal grooves of various components, preventing secondary pollution and repeated rinsing caused by wastewater accumulation, further reducing water consumption. Furthermore, compared to traditional manual deep cleaning with downtime, this solution achieves semi-automatic operation of the cleaning process, reducing manual intervention, lowering maintenance costs, and improving the economic viability of the system.

[0040] It should be noted that although the structure of the packing assembly 3 in this solution is different from the traditional and simple material stacking structure in the prior art, and although the addition of structures such as the inner annular plate 32, the outer annular plate 31, the lifting bearing ring 34, the lifting bearing plate 33, the first lifting cylinder 82 and the second lifting cylinder 9 increases the cost, the improvement in cleaning quality and efficiency brought about by this technical solution for cleaning the packing, and the fact that it is a one-time investment that can work continuously and efficiently for a long time during the long-term use of the spray tower, makes the additional cost negligible.

[0041] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0042] Furthermore, the terms "first," "second," "number one," and "number two" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "number one," or "number two" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0043] In this invention, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," "link," and "fix" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0044] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A deep scrubbing purification system for waste gas based on tantalum-niobium decomposition, characterized in that: Includes a spray tower body, which is equipped with two sets of spray components and two sets of packing components, which are arranged alternately in the upper and lower parts. The packing assembly includes an outer annular plate coaxially fixed to the inner wall of the spray tower. An inner annular plate is coaxially fixed inside the outer annular plate via multiple connecting plates. A lifting support plate for carrying the packing is provided inside the inner annular plate. A main purification zone is formed between the upper side of the lifting support plate and the inner annular plate. A lifting support ring is provided between the inner wall of the outer annular plate and the outer wall of the inner annular plate. The inner wall of the outer annular plate, the outer wall of the inner annular plate, and the upper side of the lifting support ring together form a clean zone. The lifting support plate moves upward to lift the packing in the main purification zone, thereby reducing the thickness of the main purification zone and allowing some of the packing to slide into the clean zone. The lifting support ring moves downward to increase the depth of the clean zone, allowing more packing to enter the clean zone. A drive rotation component is provided between the spray assembly and the corresponding lifting support plate. A self-cleaning component is provided on the lower side of the lifting support plate. A drive lifting component is provided between the self-cleaning component and the spray tower body. The rotation of the lifting support plate cooperates with the corresponding spray assembly above to spray, purify, and rinse the packing material on the lifting support plate. The rotation of the lifting support plate synchronously drives the self-cleaning component to rotate and circulate to clean the packing material in the cleaning area.

2. The waste gas deep spray purification system based on tantalum-niobium decomposition according to claim 1, characterized in that, The spray assembly includes an annular spray frame coaxially fixed on the inner wall of the spray tower. The annular spray frame is provided with multiple sets of purification nozzles evenly distributed along its circumference, and the multiple purification nozzles in each set are evenly distributed along the radial direction of the annular spray frame.

3. The waste gas deep spray purification system based on tantalum-niobium decomposition according to claim 1, characterized in that, The inner annular plate, outer annular plate, lifting bearing plate, and lifting bearing ring are all densely covered with sieve holes for filtering sewage.

4. The waste gas deep spray purification system based on tantalum-niobium decomposition according to claim 2, characterized in that, The drive rotation assembly includes a transmission seat fixedly mounted on the upper center of the lifting support plate, a drive motor fixedly mounted on the upper center of the annular spray frame, a transmission shaft fixedly connected to the output shaft of the drive motor, and the transmission shaft and the transmission seat connected by a spline.

5. The waste gas deep spray purification system based on tantalum-niobium decomposition according to claim 1, characterized in that, The self-cleaning component includes a central pipe fixedly installed in the middle of the lower side of the lifting support plate. Multiple self-cleaning nozzles are fixedly connected to the central pipe through multiple branch pipes. A transfer connector is slidably inserted into the lower end of the central pipe, and the other end of the transfer connector is connected to an external water supply device.

6. The waste gas deep spray purification system based on tantalum-niobium decomposition according to claim 5, characterized in that, The drive lifting assembly includes a horizontal plate fixedly installed on the inner wall of the spray tower. A first lifting cylinder is fixedly installed on the horizontal plate by a bracket. A rotating disk is fixedly installed on the telescopic end of the first lifting cylinder. The rotating disk is fixedly connected to the intermediate transfer joint.

7. The waste gas deep spray purification system based on tantalum-niobium decomposition according to claim 6, characterized in that, Two second-stage lifting cylinders are symmetrically fixed on both sides of the horizontal plate, and the extension and retraction ends of the second-stage lifting cylinders are fixedly connected to the corresponding lifting bearing rings above.

8. The waste gas deep spray purification system based on tantalum-niobium decomposition according to claim 7, characterized in that, The inner wall of the spray tower body has an inner groove in the area corresponding to each self-cleaning component.

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