Waste gas deep spraying purification system based on tantalum-niobium decomposition

Abstract

The invention belongs to the technical field of waste gas spraying purification, and particularly relates to a tantalum-niobium decomposition-based waste gas deep spraying purification system, which comprises a spraying tower body, two groups of spraying assemblies and two groups of filler assemblies are arranged in the spraying tower body, and the two groups of spraying assemblies and the two groups of filler assemblies are distributed in an up-and-down staggered manner. The filler assembly comprises an outer annular plate coaxially and fixedly arranged on the inner wall of the spraying tower body, an inner annular plate is coaxially and fixedly arranged in the outer annular plate through a plurality of connecting plates, a lifting bearing plate for bearing filler is arranged in the inner annular plate, and a main purification area is formed between the upper side of the lifting bearing plate and the inner annular plate. According to the invention, the effective and thorough cleaning of the deep area of the filler is realized, the consumption of a large amount of water resources and time caused by prolonging the washing time and improving the cleaning frequency in order to make up for the cleaning insufficiency in the traditional mode is reduced, the quality and efficiency improvement in the cleaning process is realized, and meanwhile, the downtime is reduced.

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 driving lifting assembly comprises a horizontal plate fixedly arranged on the inner wall of the spray tower body, a first lifting cylinder is fixedly arranged on the horizontal plate through a support, and a rotating disc is fixedly arranged at the telescopic end of the first lifting cylinder, and the rotating disc is fixedly connected with the middle joint.

[0012] According to an advantageous embodiment, two second lifting cylinders are also fixedly arranged on the two sides of the horizontal plate in a symmetrical manner, and the telescopic end of each second lifting cylinder is fixedly connected with the corresponding lifting bearing ring above.

[0013] According to an advantageous embodiment, an inner groove is arranged on the inner wall of the spray tower body and corresponds to each self-cleaning assembly.

[0014] Compared with the prior art, the waste gas deep spray purification system based on tantalum-niobium decomposition provided by the embodiment of the present application has the following beneficial effects: in the present application, the overall thick filler layer is divided into a main purification zone and a cleaning zone, and a lifting bearing plate and a lifting bearing ring are designed, so that the thickness of the filler in the vertical direction is dynamically adjusted. During cleaning, the lifting bearing plate is lifted and the lifting bearing ring is lowered, so that the deep filler is transferred to the cleaning zone, the deep filler in the main purification zone is thinned, and the originally closely packed deep filler is exposed to the effective cleaning range. This breaks through the physical barrier that the cleaning liquid is difficult to penetrate the filler layer with a large thickness from the structural level, and effectively and completely cleans the deep area of the filler. Since the filler layer is thinned as a whole during cleaning, whether the cleaning liquid vertically flushes the main purification zone from top to bottom or horizontally flushes the cleaning zone, the penetration resistance of the cleaning liquid is greatly reduced, the coverage uniformity is improved, and better cleaning effect can be achieved in a shorter time. This directly reduces the large consumption of water resources and time caused by the traditional way of extending the flushing time and increasing the cleaning frequency to make up for the insufficient cleaning, realizes the quality improvement and efficiency increase of the cleaning process, and reduces the downtime. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is an external perspective structural schematic diagram of the present application.

[0016] Figure 2 It is a first perspective sectional structural schematic diagram of the tower body in the present application.

[0017] Figure 3 It is a second perspective sectional structural schematic diagram of the tower body in the present application.

[0018] Figure 4 It is an external perspective sectional structural schematic diagram of the tower body, the filler assembly, the driving rotating assembly and the driving lifting assembly in the present application.

[0019] Figure 5 It is a state schematic diagram of the filler assembly during purification in the present application.

[0020] Figure 6 Figure is a schematic diagram of the state of the filler assembly in the cleaning process of the present application.

[0021] Figure, reference numerals: 1, spray tower body; 2, spray assembly; 3, filler assembly; 31, outer annular plate; 32, inner annular plate; 33, lifting carrier plate; 34, lifting carrier ring; 4, main purification zone; 5, cleaning zone; 6, driving rotating assembly; 61, transmission seat; 62, driving motor; 63, transmission shaft; 7, self-cleaning assembly; 71, central pipe; 72, self-cleaning nozzle; 73, transfer joint; 8, lifting assembly; 81, horizontal plate; 82, No. 1 lifting cylinder; 83, rotating disc; 9, No. 2 lifting cylinder; 10, inner groove. DETAILED DESCRIPTION

[0022] The following will be described in detail in combination with the accompanying Figure 1 - the accompanying Figure 6 Further detailed description of the present application.

[0023] Please refer to Figures 1-3 , based on the deep spray purification system of waste gas of tantalum niobium decomposition, including high 8 meters, diameter 3 meters of spray tower body 1, using carbon steel lining FRP material is made, has good corrosion resistance. The lower side of the spray tower body 1 is provided with the air inlet connected with the outside cooling tower through the air inlet pipe, and the upper end is connected with the fan equipment through the air outlet pipe, so that the waste gas in the spray tower flows from bottom to top. Two groups of spray assemblies 2 and two groups of filler assemblies 3 are arranged in the spray tower body 1, and the two groups of spray assemblies 2 and the two groups of filler assemblies 3 are staggered distributed. The waste gas enters the inside of the spray tower body 1 through the lower part of the spray tower, passes through two layers of filler layer in turn, and is contacted and purified with the sprayed purification liquid.

[0024] Refer to Figures 2-4 , the spray assembly 2 includes an annular spray frame coaxially fixed on the inner wall of the spray tower body 1, and a plurality of groups of purification nozzles are uniformly distributed on the annular spray frame. Each group of purification nozzles is uniformly distributed along the radial direction of the annular spray frame. The purification nozzles are supplied with purification liquid by the external conveying equipment, and can also be connected with the external cleaning water supply equipment to supply cleaning liquid for cleaning. The specific structure belongs to the conventional technical means of those skilled in the art, and therefore is not described in detail in this scheme.

[0025] Refer to Figures 3-6, the filler assembly 3 comprises an outer annular plate 31 coaxially fixed on the inner wall of the spray tower body 1, an inner annular plate 32 coaxially fixed in the outer annular plate 31 through a plurality of connecting plates, and a lifting bearing plate 33 arranged in the inner annular plate 32. The main purification zone 4 is formed between the upper side of the lifting bearing plate 33 and the inner annular plate 32 for filling the filler, and the main purification zone 4 has a disc structure. The lifting bearing ring 34 is arranged 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 bearing ring 34 jointly form the cleaning zone 5 for filling the filler, and the cleaning zone 5 has a ring structure. When the lifting bearing plate 33 moves upward, the fillers in the main purification zone 4 are lifted upward, so that the depth of the main purification zone 4 is reduced and part of the fillers falls into the cleaning zone 5. When the lifting bearing ring 34 moves downward, the depth of the cleaning zone 5 is increased so that more fillers enter the cleaning zone 5. The surfaces of the inner annular plate 32, the outer annular plate 31, the lifting bearing plate 33 and the lifting bearing ring 34 are densely covered with sieve holes for filtering sewage, and each component is subjected to corrosion protection.

[0026] Referring to Figure 3 and Figure 4 , the annular spray frame and the corresponding lifting bearing plate 33 are jointly provided with a driving rotation assembly 6. The lower side of the lifting bearing plate 33 is provided with a self-cleaning assembly 7, and the self-cleaning assembly 7 and the spray tower body 1 are jointly provided with a driving lifting assembly 8. The lifting bearing plate 33 is rotated and cooperated with the corresponding purification nozzle above to spray and clean the fillers on the lifting bearing plate 33. The lifting bearing plate 33 is rotated synchronously to drive the self-cleaning assembly 7 to rotate and clean the fillers in the cleaning zone 5.

[0027] In particular, in normal state, the lifting bearing plate 33 and the lifting bearing ring 34 in the same area are basically at the same height, so that the cleaning zone 5 and the main purification zone 4 are in the same state in the vertical direction. At this time, the fillers in the cleaning zone 5 and the fillers in the main purification zone 4 jointly fill the filler layer in the spray tower body 1 to a predetermined thickness to purify the waste gas, as shown in Figure 5 .

[0028] When the filler layer needs to be cleaned, the lifting bearing ring 34 is first moved downward by a certain distance, so that the fillers originally at the same height in the cleaning zone 5 and the main purification zone 4 move downward, expand the space of the cleaning zone 5 in the vertical direction, and reserve enough space for the upper half of the cleaning zone 5.

[0029] Then, the driving rotating assembly 6 and the driving lifting assembly 8 are cooperatively controlled to rotate while lifting the lifting carrier plate 33, so that the fillers in the main purification zone 4 are lifted upward, and when the uppermost fillers in the main purification zone 4 pass through the upper ports of the inner annular plate 32, the edge fillers lose the constraint of the inner annular plate 32 and slide from the upper ports of the inner annular plate 32 to the space reserved in the cleaning zone 5, and due to the continuous rotation of the lifting carrier plate 33, the fillers at the middle position of the main purification zone 4 spread to the edge more quickly, so that the fillers in each area of the main purification zone 4 are at the same height as much as possible. As the lifting carrier plate 33 continues to move upward, the fillers in the main purification zone 4 fill the space reserved in the cleaning zone 5. As shown in Figure 6 .

[0030] Finally, the fillers in the main purification zone 4 are thinned, and the excess fillers in the main purification zone 4 are poured into the cleaning zone 5, and due to the circular ring structure of the cleaning zone 5, the fillers are relatively thin in each horizontal direction of the cleaning zone 5. Then, the fillers in the main purification zone 4 are vertically washed downward by the spraying assembly 2 connected with the external water supply device, and the lifting carrier plate 33 synchronously drives the self-cleaning assembly 7 to rotate and circulate to horizontally spray and wash the cleaning liquid in the cleaning zone 5. Due to the great reduction in the thickness of the fillers during washing, the cleaning liquid can more quickly and completely wash the surface of the fillers. The cleaning quality is improved, and the washing time is greatly shortened. Moreover, for the spray tower with two or more filler layers, due to the thinning of the filler layers, compared with the conventional thick and fixed filler layers, when the cleaning sewage generated during the cleaning of the filler layer in the upper area flows from top to bottom, most of the sewage can more easily and quickly pass through from top to bottom, further accelerating the cleaning work of each filler layer in the entire spray tower.

[0031] After cleaning, the lifting carrier ring 34 moves upward while the lifting carrier plate 33 moves downward, the lifting of the upper half of the fillers in the cleaning zone 5 by the upward movement of the lifting carrier ring 34, and the increase of the depth of the main purification zone 4 by the downward movement of the lifting carrier plate 33, so that the lifted fillers in the cleaning zone 5 can slide from the edge of the upper ports of the inner annular plate 32 to the main purification zone 4, and the rotation of the lifting carrier plate 33 promotes the fillers in the main purification zone 4 to be more evenly distributed. In addition, a plurality of stirring rods can be arranged on the inner wall of the inner annular plate 32 near the upper end to further promote the fillers to be evenly distributed along with the rotation of the annular carrier plate. The arrangement needs to ensure that the stirring rods do not interfere with the upward movement of the lifting carrier plate 33. This structure is an extension of the present application, and will not be described further.

[0032] Referring to Figure 5 and Figure 6, in order to ensure that the cleaning area 5 flush dirt can be smoothly discharged, the inner wall of the spray tower body 1 and each self-cleaning assembly 7 corresponding area is provided with a recess 10. When the self-cleaning assembly 7 from the inside to the outside of the cleaning area 5 horizontal flushing, cleaning area 5 outside reserved a certain space, facilitate sewage through the surface of the parts after the screen hole, along the inner wall of the recess 10 down.

[0033] Wherein, need to be particularly pointed out that the filler is in bulk form, the highest of the main purification zone 4 is 1.2 meters. And the filler is PTFE (polytetrafluoroethylene) hollow sphere, convenient for the position adjustment of the filler through the lifting bearing plate 33 and the lifting bearing ring 34.

[0034] Referring to Figure 4 And Figure 5 The driving rotating assembly 6 includes a transmission seat 61 fixedly arranged on the upper side of the lifting bearing plate 33, the upper side of the annular spray frame is fixedly provided with a driving motor 62, the output shaft of the driving motor 62 is fixedly connected with a transmission shaft 63, and the transmission shaft 63 is connected with the transmission seat 61 by means of spline connection. The connection mode can realize that the transmission shaft 63 drives the transmission seat 61 to rotate while the two are relatively slid along the axial direction, and the driving motor 62 drives the transmission shaft 63 to rotate to drive the corresponding lifting bearing plate 33 to rotate through the transmission seat 61.

[0035] Referring to Figure 1 The self-cleaning assembly 7 includes a center pipe 71 fixedly arranged on the lower side of the lifting bearing plate 33, a plurality of self-cleaning nozzles 72 are fixedly connected with the center pipe 71 through a plurality of branch pipes, and the lower end of the center pipe 71 is slidably connected with a transfer joint 73. The other end of the transfer joint 73 is connected with an external water supply device. The transfer joint 73 is connected with the external water supply device, and the transfer joint 73 and the center pipe 71 can relatively rotate, and the connection part is sealed to prevent leakage of cleaning liquid. When the lifting bearing plate 33 rotates to drive the center pipe 71 to rotate, the self-cleaning nozzle 72 rotates circularly to flush the inside of the cleaning area 5.

[0036] Referring to Figures 4-6 The driving lifting assembly 8 includes a horizontal plate 81 fixedly arranged on the inner wall of the spray tower body 1, a first lifting cylinder 82 fixedly arranged on the horizontal plate 81 through a support, a rotating disc 83 fixedly arranged on the telescopic end of the first lifting cylinder 82, and the rotating disc 83 is fixedly connected with the transfer joint 73. The rotating disc 83 is driven to rise by the first lifting cylinder 82, so that the lifting bearing plate 33 is driven to move upward by the center pipe 71.

[0037] Referring to Figure 4 And Figure 5The two sides of the horizontal plate 81 are also symmetrically fixed with two No. 2 lifting cylinders 9, and the telescopic ends of the No. 2 lifting cylinders 9 are fixedly connected with the corresponding lifting bearing rings 34 above. The same lifting bearing ring 34 moves up and down through the two No. 2 lifting cylinders 9.

[0038] The present scheme aims at the pain point that the traditional fixed thick filler layer is difficult to clean deep dirt due to large thickness and compact structure. The present scheme innovatively adopts the partition design of main purification area 4 and cleaning area 5 and the filler dynamic transfer mechanism to solve the problem of incomplete cleaning from the root. Under normal circumstances, the fillers in the two areas cooperatively form a filler layer with a predetermined thickness to ensure the purification efficiency. During cleaning, the lifting bearing ring 34 is moved down to expand the capacity, and the lifting bearing plate 33 is moved up to rotate, so that the thick filler part of the main purification area 4 is transferred to the annular cleaning area 5. The filler layer originally vertically up to 1.2 meters is thinned in the main purification area 4 during the cleaning stage (the specific thickness is comprehensively adjusted according to the filler layer thickness, the depth of the cleaning area 5, and the length of the horizontal cross section of the cleaning area 5, etc.), and the filler layer is evenly distributed in the horizontal direction in the cleaning area 5. With the double cleaning mode of vertical spraying in the main purification area 4 and horizontal rotary spraying in the cleaning area 5, the cleaning liquid can fully penetrate into the deep layer of the filler, completely remove the accumulated dirt and solid impurities that cannot be reached by traditional backwashing and manual cleaning, avoid the decay of purification efficiency caused by cleaning residues, and significantly improve the stability of long-term operation of the system.

[0039] The present scheme realizes the double optimization of resources and cost through the improvement of cleaning efficiency. On the one hand, the fillers are cleaned more thoroughly, so frequent backwashing or manual cleaning is not needed, which greatly reduces the cleaning frequency. On the other hand, the thickness of the fillers is significantly reduced during the cleaning stage, the contact area between the cleaning liquid and the fillers is more sufficient, and the cleaning time is greatly shortened, thereby shortening the equipment downtime. At the same time, the sewage generated by cleaning the upper filler layer can be quickly discharged through the screen holes and inner grooves 10 of each component, avoiding secondary pollution and repeated washing caused by sewage accumulation, and further reducing water consumption. In addition, compared with traditional manual deep cleaning during shutdown, the present scheme realizes semi-automatic operation of the cleaning process, reduces manual intervention, reduces the cost of manual maintenance, and improves the economic applicability of system operation.

[0040] It should be particularly noted that although the structure of the filler assembly 3 in the present scheme is relatively simple compared with the existing technology, the additional structures of the inner annular plate 32, the outer annular plate 31, the lifting bearing ring 34, the lifting bearing plate 33, the No. 1 lifting cylinder 82, and the No. 2 lifting cylinder 9 increase the cost, but the cleaning quality and efficiency of the fillers are improved by the present technical scheme, and the additional cost is negligible in the long-term use of the spray tower.

[0041] In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the purpose of facilitating the description of the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0042] In addition, the terms "first", "second", "one", "two" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second", "one", "two" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise explicitly specified and limited.

[0043] In the present application, unless otherwise explicitly specified and limited, the terms "arrangement", "installation", "connection", "connection", "fixation" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0044] The embodiments of the present application are the preferred embodiments of the present application, and are not limited to the protection scope of the present application, therefore, any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

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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