Wet washing tower

Abstract

The invention relates to the technical field of waste gas treatment, in particular to a wet washing tower which comprises a tower body. The at least one supporting table is arranged in the tower body and is used for bearing the filler; the bottom end of the supporting table is hollowed out, so that waste gas penetrates through the supporting table and is in contact with the filler; and the first spraying system is arranged in the tower body. On the basis of the original first spraying system, the second spraying system is additionally arranged, so that the first spraying head of the first spraying system sprays the absorption liquid to the filler from the first direction to realize spraying from outside to inside, and the second spraying head of the second spraying system can outwards spray the absorption liquid to the filler layer from the interior of the filler in the second direction to realize spraying from outside to inside. Spraying from inside to outside is achieved, so that two strands of absorption liquid in different flowing directions meet in the filler layer, and the wetting efficiency of the filler layer is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of waste gas treatment, and particularly to a wet scrubber tower. Background Art

[0002] A wet scrubber tower is a key device for treating harmful gases in semiconductor production. It mainly removes pollutants through gas-liquid contact and chemical reactions. Its components include a tower body, which is provided with an air inlet and an air outlet at the bottom and top respectively. A packing layer (PP or ceramic packing) is arranged in the tower body, and a spraying system is arranged above the packing layer. The spraying system is used to atomize and spray the absorbent liquid (such as NaOH, H2SO4 solution) to cover the surface of the packing. The spraying system includes spray heads, circulation pumps and pipelines. A demister is also arranged near the air outlet at the top of the tower body. During operation, the spraying system sprays the absorbent liquid on the packing through the spray heads. The waste gas enters from the air inlet at the bottom of the tower and contacts the absorbent liquid flowing downwards in a countercurrent manner in the packing layer. The pollutants enter the liquid phase through diffusion, dissolution or chemical reactions. The purified gas is discharged after being dehydrated by the demister, and the waste liquid enters the treatment system.

[0003] Currently existing technical problems: Before the waste gas is introduced into the packing layer of the wet scrubber tower, the spraying system usually needs to run in advance for about 10 to 15 minutes to ensure that the packing layer is fully wetted by the absorbent liquid until a uniform liquid film is formed on the surface of the packing. The waiting time is relatively long, and the waste gas cannot be treated during this period. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a wet scrubber tower to solve the technical problem that the existing wet scrubber tower needs to spend a long time wetting the packing layer before use, resulting in low waste gas treatment efficiency.

[0005] Based on the above purpose, the present invention provides a wet scrubber tower, including: A tower body; At least one support platform arranged in the tower body for carrying the packing, and the bottom end of the support platform is hollowed out to allow the waste gas to penetrate the support platform and contact the packing; A first spraying system arranged in the tower body, the first spraying system includes a plurality of first spray heads located above the support platform, and the first spray heads are used to spray the absorbent liquid onto the upper end of the packing along a first direction; A second spraying system arranged in the tower body, the second spraying system includes a plurality of second spray heads embedded in the packing, and the second spray heads are used to spray the absorbent liquid onto the packing from inside the packing along a second direction, and the second direction intersects with the first direction, so that the two absorbent liquids flowing in different directions meet and blend inside the packing layer and quickly wet the packing.

[0006] As a preferred technical solution of the present invention, a liquid storage tank for storing the absorption liquid is provided at the bottom end of the tower body.

[0007] As a preferred technical solution of the present invention, a filter plate is provided at the upper end of the tower body close to the liquid storage tank.

[0008] As a preferred technical solution of the present invention, the first spraying system includes: A circulating pump fixedly connected to the tower body; A first liquid outlet pipe with one end communicating with the water outlet end of the circulating pump; A liquid spraying pipe with one end communicating with the other end of the first liquid outlet pipe, the other end of the liquid spraying pipe penetrates through the side wall of the tower body and extends into the tower body, and a plurality of the first nozzles are arranged at intervals along the length direction of the liquid spraying pipe, and the spray holes of the first nozzles point to the support platform; A first liquid suction pipe with one end communicating with the water inlet end of the circulating pump, and the other end of the first liquid suction pipe penetrates through the tower body and extends into the liquid storage tank.

[0009] As a preferred technical solution of the present invention, the second spraying system includes: A main pipe with one end penetrating through the middle of the support platform, the inside of the main pipe is hollow to form a pipeline for the absorption liquid to flow through, and a plurality of the second nozzles are arranged in a ring on the outer circumference of the main pipe with the axis of the main pipe as the center; A water supply structure with one end communicating with the main pipe, and the water supply structure is used to pump the absorption liquid in the liquid storage tank into the main pipe, so that the absorption liquid is sprayed onto the packing layer through the main pipe and the second nozzles.

[0010] As a preferred technical solution of the present invention, the wet scrubber further includes a driving structure, and the driving structure is used to drive the support platform to rotate around its center, so that the absorption liquid sprayed into the packing diffuses from the middle to the outside under the action of centrifugal force to fully wet the packing.

[0011] As a preferred technical solution of the present invention, the driving structure includes: A top support and a bottom support respectively arranged at the top end and the bottom end of the tower body; A bearing seat connected to the top support and the bottom support, and the bearing seat is matched with the main pipe; A driving motor arranged at the lower end of the bottom support, the output shaft of the driving motor penetrates through the bottom support and is connected with a first belt pulley; A second belt pulley fixedly connected to the main pipe; A belt for drivingly connecting the first belt pulley and the second belt pulley.

[0012] As a preferred technical solution of the present invention, the water supply structure includes: A piston box fixedly arranged at the bottom end of the tower body; A second liquid suction pipe with one end communicating with the piston box, and the other end of the second liquid suction pipe extends into the liquid storage tank; A second liquid outlet pipe with one end communicating with the piston box, and the other end of the second liquid outlet pipe is rotatably connected to the main pipe; One-way valves arranged in the second liquid suction pipe and the second liquid outlet pipe; A piston movably arranged in the piston box; A connecting rod with one end movably connected to the piston; A turntable connected to the output shaft of the driving motor, and an eccentric shaft rotatably matched with the other end of the connecting rod is arranged on the turntable.

[0013] As a preferred technical solution of the present invention, an outer wall and an inner wall extending along the length direction of the main pipe are arranged on the support platform. The inner wall encloses an installation groove for the main pipe to pass through. An accommodation chamber for accommodating packing is formed between the outer wall and the inner wall. One end of the second spray head penetrates through a through hole opened on the surface of the inner wall.

[0014] As a preferred technical solution of the present invention, flanges extending outward along the center are formed at both the upper and lower ends of the outer wall of the support platform. A temporary storage chamber for temporarily storing the absorption liquid is jointly formed between the flanges, the tower body and the outer wall. A through groove is opened on the surface of the outer wall, and the through groove is used to introduce the absorption liquid in the accommodation chamber into the temporary storage chamber. A return pipe is arranged outside the tower body. One end of the return pipe communicates with the temporary storage chamber, and the other end of the return pipe communicates with the liquid storage tank.

[0015] Beneficial effects of the present invention: Based on the original first spraying system, the present invention adds a second spraying system. The first spray head of the first spraying system sprays the absorption liquid onto the packing from the first direction, realizing spraying from the outside to the inside. The second spray head of the second spraying system can spray the absorption liquid from the inside of the packing to the packing layer along the second direction outward, realizing spraying from the inside to the outside. Thus, two absorption liquids flowing in different directions meet in the packing layer, effectively improving the wetting efficiency of the packing layer and shortening the preparation time of the equipment. Description of the drawings

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only those of the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.

[0017] Figure 1 It is the front view structural schematic diagram of the present invention; Figure 2Schematic side view structure diagram of the present invention; Figure 3 Schematic top view structure diagram of the present invention; Figure 4 Schematic three - dimensional structure diagram of the present invention; Figure 5 Schematic front - view half - section structure diagram of the tower body of the present invention; Figure 6 Schematic right - front three - dimensional half - section structure diagram of the tower body of the present invention; Figure 7 Schematic side - view half - section structure diagram of the tower body of the present invention; Figure 8 Schematic left - rear three - dimensional half - section structure diagram of the tower body of the present invention; Figure 9 Schematic three - dimensional structure diagram of the support platform, main pipe, drive motor, second spray head and piston box of the present invention; Figure 10 For the present invention Figure 9 Enlarged structure diagram at position A in; Figure 11 For the present invention Figure 9 Enlarged structure diagram at position B in; Figure 12 Schematic three - dimensional partially - sectioned structure diagram of the drive motor, first belt pulley, second belt pulley, main pipe and piston box of the present invention.

[0018] The markings in the figure are: 1, tower body; 2, air inlet; 3, air outlet; 4, support platform; 5, circulation pump; 6, first liquid - suction pipe; 7, first liquid - discharge pipe; 8, liquid - sprinkling pipe; 9, first spray head; 10, liquid storage tank; 11, top support; 12, bearing seat; 13, main pipe; 14, end plate; 15, installation groove; 16, bottom support; 17, drive motor; 18, first belt pulley; 19, second belt pulley; 20, belt; 21, turntable; 22, eccentric shaft; 23, connecting rod; 24, piston; 25, piston box; 26, second liquid - suction pipe; 27, second liquid - discharge pipe; 28, rotary joint; 29, second spray head; 30, through - hole; 31, flange; 32, liquid storage cavity; 33, through - slot; 34, sleeve; 35, inner support; 36, movable rod; 37, cover; 38, end cover; 39, spring; 40, mesh plate; 41, return pipe; 42, filter plate; 43, maintenance door; 44, demisting layer; 45, bottom hole; 46, partition plate. Detailed implementation manners

[0019] In order to make the purpose, technical solutions and advantages of the present invention more clear and understandable, the present invention will be further described in detail below in conjunction with specific embodiments.

[0020] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the ordinary meanings understood by those with ordinary skills in the field to which the present invention pertains. The "first", "second" and similar terms used in the present invention do not denote any order, quantity or importance, but are only used to distinguish different components. Words such as "comprising" or "including" mean that the elements or objects appearing before this word cover the elements or objects listed after this word and their equivalents, without excluding other elements or objects. Words such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Upper", "lower", "left", "right", etc. are only used to represent relative position relationships, and when the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0021] As Figure 4 , Figure 5 and Figure 6 shown, a wet scrubber includes a tower body 1; at least one support platform 4 disposed in the tower body 1 for carrying packing, preferably, three support platforms 4 are provided and arranged longitudinally at intervals, the bottom end of the support platform 4 is hollowed out for the exhaust gas to penetrate the support platform 4 and contact the packing, preferably, a bottom hole 45 is opened at the bottom end of the support platform 4, and the aperture of the bottom hole 45 is smaller than the particle size of the packing, a first spraying system disposed in the tower body 1, the first spraying system includes a plurality of first spray heads 9 located above the support platform 4, and the first spray heads 9 are used to spray the absorption liquid onto the upper end of the packing along a first direction; a second spraying system disposed in the tower body 1, the second spraying system includes a plurality of second spray heads 29 embedded in the packing, and the second spray heads 29 are used to spray the absorption liquid onto the packing along a second direction from inside the packing, and the second direction intersects with the first direction, so that two absorption liquids flowing in different directions meet and blend inside the packing layer and quickly wet the packing; preferably, the first direction is vertical and the second direction is horizontal; Adopting the above technical solution can improve the efficiency of wetting the packing layer. During use, start the first spraying system, and the first spraying system inputs the absorption liquid to the first spray heads 9 with a certain pressure, so that the absorption liquid is sprayed onto the packing layer at the upper end of the support platform 4 through the first spray heads 9. The absorption liquid is vertically sprayed onto the upper end of the packing layer. Under the action of gravity, the absorption liquid gradually penetrates downward along the voids of the packing and gradually spreads to fill all the voids. At the same time, start the second spraying system, and the second spraying system sprays the absorption liquid onto the packing layer from the second spray heads 29 with a certain pressure. The absorption liquid is sprayed onto the packing layer in the horizontal direction, and the absorption liquid gradually diffuses outward from the middle of the packing layer. Therefore, through spraying in two directions, the absorption liquid is sprayed onto the packing layer by combining internal and external spraying. Compared with single vertical spraying, the wetting efficiency of the packing layer can be effectively improved.

[0022] AsFigure 5 and Figure 6 As shown in Figure 6 , in this embodiment, a liquid storage tank 10 for storing the absorption liquid is provided at the bottom end of the tower body 1; a filter plate 42 is provided at the upper end of the tower body 1 near the liquid storage tank 10; Adopting the above technical solution can store the absorption liquid at the bottom end of the tower body 1. During use, along with the operation of the first spraying system and the second spraying system, the absorption liquid sprayed onto the packing will continuously penetrate downward due to gravity until it passes through the hollow part of the support platform 4 and finally converges into the liquid storage tank 10 at the bottom end of the tower body 1. Due to the setting of the filter plate 42, when the absorption liquid passes through the filter plate 42, the particulate matter mixed in the absorption liquid, the deposition of metal oxides, and the accumulation of chemical reaction products will be filtered.

[0023] As Figure 4 and Figure 5 As shown in Figure 5 , in this embodiment, the first spraying system includes: a circulation pump 5 fixedly connected to the tower body 1; a first liquid outlet pipe 7 with one end communicating with the water outlet end of the circulation pump 5; a liquid spraying pipe 8 with one end communicating with the other end of the first liquid outlet pipe 7. The other end of the liquid spraying pipe 8 penetrates through the side wall of the tower body 1 and extends into the tower body 1. A plurality of first nozzles 9 are arranged at intervals along the length direction of the liquid spraying pipe 8, and the spray holes of the first nozzles 9 point to the support platform 4; a first liquid suction pipe 6 with one end communicating with the water inlet end of the circulation pump 5, and the other end of the first liquid suction pipe 6 penetrates through the tower body 1 and extends into the liquid storage tank 10; Adopting the above technical solution can spray the absorption liquid from the upper end of the packing. During use, start the circulation pump 5. The circulation pump 5 sucks the absorption liquid located in the liquid storage tank 10 through the first liquid suction pipe 6, and pumps the absorption liquid into the liquid spraying pipe 8 through the first liquid outlet pipe 7. The liquid spraying pipe 8 sprays the absorption liquid through the first nozzles 9 on the surface, and the sprayed absorption liquid is sprinkled on the packing at the upper end of the support platform 4. The first nozzles 9 can be selected as atomizing nozzles.

[0024] As Figure 6 and Figure 8 As shown in Figure 8 , in this embodiment, the second spraying system includes: a main pipe 13 with one end penetrating through the middle of the support platform 4. The inside of the main pipe 13 is hollow to form a pipeline for the absorption liquid to flow through. A plurality of second nozzles 29 are arranged in a ring on the outer circumference of the main pipe 13 with the axis line of the main pipe 13 as the center; a water supply structure with one end communicating with the main pipe 13, and the water supply structure is used to pump the absorption liquid in the liquid storage tank 10 into the main pipe 13 so that the absorption liquid is sprayed onto the packing layer through the main pipe 13 and the second nozzles 29; Adopting the above technical solution can spray the absorption liquid from the inside of the packing. During use, start the water supply structure to pump the absorption liquid in the liquid storage tank 10 into the main pipe 13, and spray the absorption liquid from the second nozzles 29 onto the packing layer through the main pipe 13, realizing spraying from the inside of the packing layer, so as to cooperate with the first spraying system to quickly wet the packing and reduce the time required for wetting.

[0025] As Figure 6 、 Figure 8 and Figure 9 shown, in this embodiment, the wet scrubber further includes a driving structure for driving the support platform 4 to rotate around its center, so that the absorption liquid sprayed into the packing diffuses from the middle to the outside under the action of centrifugal force to fully wet the packing; specifically, the driving structure includes: a top support 11 and a bottom support 16 respectively provided at the top and bottom in the tower body 1; a bearing seat 12 connected to the top support 11 and the bottom support 16, and the bearing seat 12 is matched with the main pipe 13; a driving motor 17 provided at the lower end of the bottom support 16, the output shaft of the driving motor 17 penetrates through the bottom support 16 and is connected with a first pulley 18; a second pulley 19 fixedly connected to the main pipe 13; a belt 20 for drivingly connecting the first pulley 18 and the second pulley 19; Adopting the above technical solution can further improve the wetting efficiency of the absorption liquid of the second spraying system through centrifugal force. During use, the driving motor 17 is started to drive the first pulley 18 to rotate, the first pulley 18 drives the second pulley 19 to rotate in cooperation with the belt 20, the second pulley 19 drives the main pipe 13 to rotate, and the main pipe 13 drives the second spray head 29 and the support platform 4 to rotate together, so that the absorption liquid located in the middle of the packing layer gradually diffuses outward under the action of centrifugal force, improving the diffusion efficiency of the absorption liquid.

[0026] As Figure 9 and Figure 12 shown, in this embodiment, the water supply structure includes: a piston box 25 fixedly provided at the bottom end of the tower body 1; a second liquid suction pipe 26 with one end communicated with the piston box 25, and the other end of the second liquid suction pipe 26 extends into the liquid storage tank 10; a second liquid outlet pipe 27 with one end communicated with the piston box 25, and the other end of the second liquid outlet pipe 27 is rotatably connected to the main pipe 13; check valves provided in the second liquid suction pipe 26 and the second liquid outlet pipe 27; a piston 24 movably provided in the piston box 25; a connecting rod 23 with one end movably connected to the piston 24; a turntable 21 connected to the output shaft of the driving motor 17, and an eccentric shaft 22 is provided on the turntable 21 and rotatably cooperates with the other end of the connecting rod 23; Adopting the above technical solution can pump the absorbent liquid in the liquid storage tank 10 into the main pipe 13. During use, as the output shaft of the driving motor 17 rotates, it will synchronously drive the turntable 21 to rotate. The turntable 21 drives the piston 24 to reciprocate in the piston box 25 through the eccentric shaft 22 and the connecting rod 23. When the piston 24 gradually moves away from the piston box 25, a negative pressure will be created in the piston box 25, thereby sucking the absorbent liquid in the liquid storage tank 10 into the piston box 25 through the second liquid suction pipe 26. When the piston 24 is gradually pressed into the piston box 25, a high pressure will be created in the piston box 25, thereby squeezing the absorbent liquid in the piston box 25 into the main pipe 13 through the second liquid outlet pipe 27, and then squeezing the absorbent liquid into the second spray head 29 through the main pipe 13. Since one-way valves are provided in both the second liquid suction pipe 26 and the second liquid outlet pipe 27, it can effectively prevent the absorbent liquid from flowing back and ensure stable pressure.

[0027] As Figure 12 shown, in this embodiment, a rotary joint 28 is provided at one end of the second liquid outlet pipe 27 connected to the main pipe 13. The rotary joint 28 is rotationally matched with a rotating groove opened inside the main pipe 13, and a sealing ring is provided at the gap between the rotary joint 28 and the rotating groove; Adopting the above technical solution can connect the second liquid outlet pipe 27 and the main pipe 13 in a rotational manner, avoiding the bending and deformation of the second liquid outlet pipe 27 caused by the rotation of the main pipe 13.

[0028] As Figure 9 and Figure 11 shown, in this embodiment, an outer wall and an inner wall extending along the length direction of the main pipe 13 are provided on the support platform 4. The inner wall encloses an installation groove 15 for the main pipe 13 to pass through. An end plate 14 is provided outside the main pipe 13, and the end plate 14 is fixedly connected to the inner wall of the installation groove 15. A containing chamber for packing is formed between the outer wall and the inner wall. One end of the second spray head 29 penetrates through a through hole 30 opened on the surface of the inner wall; Adopting the above technical solution can isolate the packing from the second spray head 29. During use, the packing is added to the containing chamber formed by the outer wall and the inner wall at the upper end of the support platform 4 to prevent the packing from entering the gap between the second spray heads 29.

[0029] As Figure 8 and Figure 9 shown, in this embodiment, a plurality of partition plates 46 are provided on the support platform 4. The partition plates 46 are used to divide the containing chamber into several independent small containing chambers, so that the packing layers in each small containing chamber are isolated from each other; Adopting the above technical solution can improve the wetting efficiency of the packing. By dividing the packing layer into multiple small packing layers, it can prevent the packing from aggregating and caking due to the viscosity of dirt, thereby hindering the spreading speed of the absorption liquid. Moreover, when the packing in a certain small chamber is damaged or severely blocked, only the damaged or severely blocked area needs to be replaced, saving packing materials and labor costs.

[0030] As Figure 7 and Figure 8 shown, in this embodiment, flanges 31 are formed by extending outward from the upper and lower ends of the outer sidewall of the support table 4 along the center. The flanges 31 and the tower body 1 and the outer sidewall together form a temporary storage chamber for temporarily storing the absorption liquid. Through grooves 33 are formed on the surface of the outer sidewall. The through grooves 33 are smaller than the size of the packing particles and larger than the size of the impurity particles. The through grooves 33 are used to introduce the absorption liquid in the accommodation chamber into the temporary storage chamber. A return pipe 41 is arranged outside the tower body 1. One end of the return pipe 41 communicates with the temporary storage chamber, and the other end of the return pipe 41 communicates with the liquid storage tank 10; Adopting the above technical solution can conveniently remove the impurity particles concentrated in the packing layer. During use, when the second spray head 29 sprays the absorption liquid outward along the radial direction of the support table 4, a certain pressure will be generated on the impurity particles in the packing layer. At the same time, the high-speed rotation of the support table 4 can help guide the impurity particles along the spraying direction of the absorption liquid, so that the impurity particles finally enter the temporary storage chamber through the through grooves 33 along with the absorption liquid, and flow into the upper end of the filter plate 42 through the return pipe 41. The absorption liquid flows into the liquid storage tank 10 through the filter plate 42, while the impurity particles stay on the upper end of the filter plate 42, thus realizing the cleaning of the packing; When backwashing the packing is required, replace the absorption liquid in the liquid storage tank 10 with clean water and add a small amount of acid / alkali to enhance the dissolution effect. The first spraying system and the second spraying system can be started simultaneously. The clean water is sprayed onto the packing through the first spray head 9 and the second spray head 29. Generally, rinse for 10 - 15 minutes, observe the change in the turbidity of the drained water until the drained water is clear. Through the return pipe 41, part of the backwashing sewage can bypass the support table 4 to prevent the dirt washed out from contaminating the lower support table 4.

[0031] As Figure 9 and Figure 10 shown, in this embodiment, a sleeve 34 is further arranged in the through groove 33 of the support table 4. The sleeve 34 is hollow inside and open at both ends. An inner support 35 is arranged in the sleeve 34. A movable rod 36 is slidably connected to the inner support 35. One end of the movable rod 36 is provided with a sealing cover 37, and the other end of the movable rod 36 is provided with an end cover 38. The end cover 38 has a certain weight. A spring 39 is arranged between the end cover 38 and the inner support 35. A mesh plate 40 is arranged at the other end of the sleeve 34 relative to the sealing cover 37. The aperture of the mesh plate 40 is smaller than the size of the packing particles and larger than the size of the impurity particles; Adopting the above technical solution can ensure that when the support platform 4 is in a non-rotating state or when the packing has been completely wetted, the second spraying system no longer needs to work, and only when the first spraying system is started, the absorption liquid in the accommodation chamber will not quickly flow out, improving the residence time of the absorption liquid in the accommodation chamber. Only when the packing layer needs to be pre-wetted before the equipment is used, the rotating support platform 4 can drive the cover 37 to rotate, thereby generating a centrifugal force until the centrifugal force is greater than the elastic force of the spring 39, so that the cover 37 opens an opening of the sleeve 34, enabling the absorption liquid to enter the temporary storage chamber through the opening and flow into the liquid storage tank 10 through the return pipe 41.

[0032] Working principle: During use, start the circulation pump 5. The circulation pump 5 sucks the absorption liquid located in the liquid storage tank 10 through the first liquid suction pipe 6 and pumps the absorption liquid into the liquid spraying pipe 8 through the first liquid outlet pipe 7. The liquid spraying pipe 8 sprays the absorption liquid through the first spray head 9 on its surface. The sprayed absorption liquid is sprinkled on the packing on the upper end of the support platform 4. The absorption liquid is vertically sprinkled on the upper end of the packing layer. Under the action of gravity, the absorption liquid gradually penetrates downward along the voids of the packing and gradually spreads to fill all the voids. Start the drive motor 17 to drive the first belt pulley 18 to rotate. The first belt pulley 18 drives the second belt pulley 19 to rotate through the belt 20. The second belt pulley 19 drives the main pipe 13 to rotate. The main pipe 13 drives the second spray head 29 and the support platform 4 to rotate together, so that the absorption liquid in the middle of the packing layer gradually spreads outward under the action of centrifugal force, improving the diffusion efficiency of the absorption liquid. As the output shaft of the drive motor 17 rotates, it will synchronously drive the turntable 21 to rotate. The turntable 21 drives the piston 24 to reciprocate in the piston box 25 through the eccentric shaft 22 and the connecting rod 23. When the piston 24 gradually leaves the piston box 25, a negative pressure will be created in the piston box 25, thereby sucking the absorption liquid in the liquid storage tank 10 into the piston box 25 through the second liquid suction pipe 26. When the piston 24 is gradually pressed into the piston box 25, a high pressure will be created in the piston box 25, thereby squeezing the absorption liquid in the piston box 25 into the main pipe 13 through the second liquid outlet pipe 27, and then squeezing the absorption liquid into the second spray head 29 through the main pipe 13. The absorption liquid is sprayed onto the packing layer in a horizontal direction through the second spray head 29. Therefore, through spraying in two directions and combining internal and external spraying, the absorption liquid is sprayed onto the packing layer together, which can effectively improve the wetting efficiency of the packing layer compared to single vertical spraying.

[0033] Those of ordinary skill in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the concept of the present invention, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations in different aspects of the present invention as described above, which are not provided in detail for the sake of brevity.

[0034] The present invention is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A wet scrubbing tower, comprising: A tower body (1); At least one support platform (4) disposed in the tower body (1) for carrying packing, the bottom end of the support platform (4) being hollowed out to allow waste gas to penetrate the support platform (4) and contact the packing; A first spraying system disposed in the tower body (1), the first spraying system including a plurality of first spray nozzles (9) located above the support platform (4), the first spray nozzles (9) being configured to spray the absorption liquid onto the upper end of the packing along a first direction; Characterized in that the wet scrubbing tower further includes: A second spraying system disposed in the tower body (1), the second spraying system including a plurality of second spray nozzles (29) embedded in the packing, the second spray nozzles (29) being configured to spray the absorption liquid onto the packing from inside the packing along a second direction, the second direction intersecting the first direction, so that the two absorption liquids flowing in different directions meet and blend inside the packing layer and quickly wet the packing.

2. The wet scrubber according to claim 1, wherein A liquid storage tank (10) for storing the absorption liquid is provided at the bottom end in the tower body (1).

3. The wet scrubber according to claim 2, wherein, A filter plate (42) is provided at the upper end of the tower body (1) near the liquid storage tank (10).

4. The wet scrubber according to claim 2, characterized in that, The first spraying system includes: A circulation pump (5) fixedly connected to the tower body (1); A first liquid outlet pipe (7) having one end communicated with the water outlet end of the circulation pump (5); A liquid spraying pipe (8) having one end communicated with the other end of the first liquid outlet pipe (7), the other end of the liquid spraying pipe (8) penetrating through the side wall of the tower body (1) and extending into the tower body (1), a plurality of the first spray nozzles (9) being arranged at intervals along the length direction of the liquid spraying pipe (8), and the spray holes of the first spray nozzles (9) pointing to the support platform (4); A first liquid suction pipe (6) having one end communicated with the water inlet end of the circulation pump (5), the other end of the first liquid suction pipe (6) penetrating through the tower body (1) and extending into the liquid storage tank (10).

5. The wet scrubber according to claim 2, characterized in that, The second spraying system includes: A main pipe (13) having one end penetrating through the middle of the support platform (4), the inside of the main pipe (13) being hollow to form a pipeline for the absorption liquid to flow through, and a plurality of the second spray nozzles (29) being arranged in a ring on the outer circumference of the main pipe (13) with the axis line of the main pipe (13) as the center; A water supply structure having one end communicated with the main pipe (13), the water supply structure being configured to pump the absorption liquid in the liquid storage tank (10) into the main pipe (13), so that the absorption liquid is sprayed onto the packing layer through the main pipe (13) and the second spray nozzles (29).

6. The wet scrubber according to claim 5, wherein, The wet scrubbing tower further includes a driving structure, the driving structure being configured to drive the support platform (4) to rotate around its center, so that the absorption liquid sprayed into the packing diffuses from the middle to the outside under the action of centrifugal force to fully wet the packing.

7. The wet scrubber according to claim 6, wherein The driving structure includes: A top support (11) and a bottom support (16) respectively disposed at the top end and the bottom end in the tower body (1); A bearing seat (12) connected to the top support (11) and the bottom support (16), the bearing seat (12) being matched with the main pipe (13); A driving motor (17) provided at the lower end of the bottom support (16), the output shaft of the driving motor (17) penetrates through the bottom support (16) and is connected with a first pulley (18); A second pulley (19) fixedly connected to the main pipe (13); A belt (20) for drivingly connecting the first pulley (18) and the second pulley (19).

8. The wet scrubber according to claim 7, characterized in that, The water supply structure includes: A piston box (25) fixedly provided at the bottom end of the tower body (1); A second liquid suction pipe (26) with one end communicating with the piston box (25), and the other end of the second liquid suction pipe (26) extends into the liquid storage tank (10); A second liquid outlet pipe (27) with one end communicating with the piston box (25), and the other end of the second liquid outlet pipe (27) is rotatably connected to the main pipe (13); One-way valves provided in the second liquid suction pipe (26) and the second liquid outlet pipe (27); A piston (24) movably provided in the piston box (25); A connecting rod (23) with one end movably connected to the piston (24); A turntable (21) connected to the output shaft of the driving motor (17), and an eccentric shaft (22) rotatably cooperating with the other end of the connecting rod (23) is provided on the turntable (21).

9. The wet scrubber according to claim 8, wherein, The support platform (4) is provided with an outer wall and an inner wall extending along the length direction of the main pipe (13). The inner wall encloses an installation groove (15) for the main pipe (13) to pass through. An accommodation chamber for packing material is formed between the outer wall and the inner wall. One end of the second spray head (29) penetrates through a through hole (30) opened on the surface of the inner wall.

10. The wet scrubber according to claim 9, wherein, Flanges (31) extending outward along the center are formed at the upper and lower ends of the outer wall of the support platform (4). A temporary storage chamber for temporarily storing the absorption liquid is jointly formed between the flanges (31), the tower body (1), and the outer wall. A through groove (33) is opened on the surface of the outer wall. The through groove (33) is used to introduce the absorption liquid in the accommodation chamber into the temporary storage chamber. A return pipe (41) is provided outside the tower body (1). One end of the return pipe (41) communicates with the temporary storage chamber, and the other end of the return pipe (41) communicates with the liquid storage tank (10).

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