Spray tower for efficiently treating pickling waste gas

Abstract

The utility model belongs to the technical field of waste gas treatment, and particularly relates to a spray tower for efficiently treating pickling waste gas, which comprises a tower body, a tower cover, a gas inlet pipe, a gas outlet pipe, a spray system and a filler layer. The spraying system comprises a main spraying pipe, an auxiliary spraying pipe and a nozzle, and is used for absorbing the absorption liquid in the liquid storage tank and atomizing and spraying out the absorption liquid, so that the removal efficiency of pollutants in the waste gas is improved; the packing layer is located on the lower portion of the chemical nozzle in the spraying groove and is convenient to replace and maintain through the first installation door, and other parts in the spraying groove can be conveniently maintained and repaired through the first installation door. Due to the design of the liquid storage tank and the filter plate, cyclic utilization and filtration of the absorption liquid are realized, and the spraying effect is kept; due to the arrangement of the motor and the scraping plate, automatic cleaning of the demisting silk screen is achieved, and the working efficiency is improved; the device has the advantages of high treatment efficiency, convenience in maintenance and the like, can effectively intercept tiny liquid drops, improves the pollutant absorption and neutralization efficiency, and ensures the use effect of absorption liquid.

Description

Technical Field

[0001] This utility model relates to the field of waste gas treatment technology, and in particular to a spray tower for high-efficiency acid washing waste gas treatment. Background Technology

[0002] With the rapid development of industrial production, the treatment of waste gas generated during pickling has become an environmental problem that urgently needs to be solved.

[0003] Traditional methods for treating acid washing waste gas mainly include water washing, alkaline absorption, and activated carbon adsorption. While these methods can remove pollutants from the waste gas to some extent, they have the following problems: traditional methods are often only effective against specific types of pollutants and have limited effectiveness against complex waste gas compositions; some methods require large amounts of chemical reagents, resulting in high operating costs; and some equipment has complex structures, making maintenance and repair difficult and increasing the burden of daily operation and maintenance. Utility Model Content

[0004] Based on the existing problems in waste gas treatment technology, this utility model proposes a spray tower for high-efficiency acid washing waste gas treatment.

[0005] This utility model proposes a high-efficiency acid washing waste gas treatment spray tower, including a tower body and a tower cover. The tower cover is detachably fixed to the top of the tower body. The interior of the tower body is provided with an installation groove and a spray groove. An air inlet pipe is installed at the bottom of the spray groove on the outer wall of the tower body and is connected to the interior of the spray groove. An air outlet pipe is fixedly provided in the middle of the top of the tower cover and is connected to the interior of the spray groove.

[0006] Preferably, a first mounting plate, a second mounting plate, a mounting pipe, and a fourth mounting plate are fixed inside the spray tank from top to bottom on one side. The mounting pipe and the fourth mounting plate are each set in two groups, and the fourth mounting plate is located above the air inlet pipe. Multiple blocks are hinged to the top of the first mounting plate, and a demisting mesh is fixedly snapped into the middle of the top of the first mounting plate, with the top of the demisting mesh fitting against the bottom of the block.

[0007] With the above technical solution, the demister mesh is located at the top center of the first mounting plate, effectively intercepting tiny droplets carried in the exhaust gas. These droplets are captured by the mesh as the exhaust gas passes through the spray tower, thereby reducing the moisture content in the exhaust gas. Furthermore, because the demister mesh is held in place by a baffle inside the first mounting plate, it is easy to replace, thus ensuring the filtration effect of the demister mesh.

[0008] Preferably, each set of the installation pipes consists of two pipes, and multiple main spray pipes are fixedly installed between the two installation pipes. Multiple auxiliary spray pipes are fixedly installed at the bottom of each main spray pipe, and a chemical nozzle is threadedly fixed to the outer wall of the bottom of each auxiliary spray pipe. The installation pipes, main spray pipes, and auxiliary spray pipes are all interconnected, and the two sets of installation pipes are staggered and fixed inside the spray tank.

[0009] The above technical solution, by setting up multi-layer spray pipes and atomizing nozzles, can increase the spray area and spray density, allowing the waste gas to come into more full contact with the treatment liquid and improving the treatment efficiency; and the atomizing nozzles can atomize the treatment liquid into fine particles, increasing the contact area with the waste gas, thereby improving the removal efficiency of pollutants in the waste gas.

[0010] Preferably, each of the fourth mounting plates has a packing layer snapped into place, and a first mounting door is installed on the side wall of the tower body on the side of the two packing layers, and the first mounting door is located on the front side of the two packing layers.

[0011] Through the above technical solution, the presence of the packing layer greatly increases the contact area between the gas and the liquid, which helps to improve the absorption and neutralization efficiency of pollutants in the waste gas. The packing layer enables the gas to form a foam flow inside the tower, which can more effectively transfer and treat pollutants in the gas. By setting the first installation door on the side of the packing layer, the packing can be easily replaced and maintained without dismantling other parts of the entire spray tower. Furthermore, the first installation door facilitates the replacement of the packing layer and the maintenance of the tower's interior.

[0012] Preferably, a liquid storage tank is fixedly installed on one side of the installation groove, a connecting pipe is fixedly provided on the top of the liquid storage tank and the connecting pipe extends into the spray tank, a fifth mounting plate is fixedly provided in the middle of the liquid storage tank, a filter plate is snapped and fixed inside the fifth mounting plate, a second mounting door is installed on the outer wall of the tower body on one side of the liquid storage tank and the second mounting door is located on the side of the filter plate, and an inlet and outlet pipe is fixedly provided below the second mounting door on the outer side of the tower body and the inlet and outlet pipe is connected to the inside of the liquid storage tank.

[0013] The above technical solution, by setting up a filter plate, allows the absorbent liquid, after being sprayed inside the tower, to be filtered when it re-enters the storage tank, thus ensuring the effectiveness of the absorbent liquid and preventing clogging of the nozzles; the second installation door is located on the side of the filter plate, allowing operators to easily inspect and replace the filter plate.

[0014] Preferably, a water pump is fixedly installed on the other side inside the mounting groove. The water pump inlet end is fixedly provided with an inlet pipe, and the inlet pipe extends into the liquid storage tank. The water pump outlet end is fixedly connected with a three-way adapter. The other two ends of the three-way adapter are fixedly provided with outlet pipes. Both outlet pipes extend through the mounting groove into the spray tank. Inside the spray tank, both outlet pipes pass through two fourth mounting plates and are fixedly connected to the two sets of mounting pipes respectively.

[0015] The above technical solution enables automatic circulation of the absorbent liquid without the need for an external pumping system, simplifying the overall structure. The T-connector and two outlet pipes ensure that the absorbent liquid is evenly distributed to the two sets of installation pipes, improving the spraying effect.

[0016] Preferably, a motor is fixedly installed on the outside of the tower body, and the motor drive shaft is coaxially fixed to a first rotating shaft through a coupling. The first rotating shaft rotates through the tower body to the middle of the first mounting plate and the second mounting plate. A first bevel gear is fixedly installed at the end of the first rotating shaft. A second rotating shaft is rotatably fixed at the middle of the top of the second mounting plate. A scraper is fixedly installed at the top of the second rotating shaft. The bottom of the scraper is fitted with the bottom of the demisting mesh. A second bevel gear is sleeved on the outer wall of the second rotating shaft, and the second bevel gear meshes with the first bevel gear.

[0017] Through the above technical solution, the motor and the meshing of the first and second bevel gears drive the scraper to rotate. The scraper can automatically clean the liquid droplets on the demister mesh, prevent the mesh from clogging, and maintain the continuous and efficient operation of the spray tower. The continuous movement of the scraper can effectively scrape the liquid droplets in the exhaust gas off the demister mesh, improving the demisting efficiency.

[0018] The beneficial effects of this utility model are as follows:

[0019] 1. By setting up a demister mesh, scraper, motor, first rotating shaft, second rotating shaft, first bevel gear, and second bevel gear, the demister mesh is positioned at the top center of the first mounting plate to intercept tiny droplets in the exhaust gas and prevent them from entering the exhaust pipe. The scraper is driven by the motor to rotate, thereby automatically cleaning the demister mesh, keeping it clean, and improving work efficiency. The hinged and fixed stop bar can fix the demister mesh on the first mounting plate, making it easy to replace.

[0020] 2. By setting up two layers of main spray pipes and auxiliary spray pipes, as well as two layers of packing, the water pump draws the absorbent liquid from inside the storage tank and sprays it onto the packing layer through the nozzles at the bottom of the auxiliary spray pipes. This increases the contact area between the gas and liquid, which helps to further improve the absorption and neutralization efficiency of pollutants, resulting in better waste gas treatment efficiency. Furthermore, the first installation door facilitates the replacement of the packing layer and allows for convenient protection and maintenance of the tower's interior.

[0021] 3. The filter plate and the second installation door allow the filter plate to remove impurities from the absorbent liquid when it flows back to the storage tank after use inside the spray tank, resulting in better absorption. The second installation door also facilitates the protection and replacement of the filter plate, thus ensuring its filtration effect. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall front view of a spray tower for high-efficiency acid washing waste gas treatment proposed in this utility model;

[0023] Figure 2 This is a schematic diagram of the overall rear view of a spray tower for high-efficiency acid washing waste gas treatment proposed in this utility model;

[0024] Figure 3 This is a schematic cross-sectional view of a spray tower for high-efficiency acid washing waste gas treatment proposed in this utility model;

[0025] Figure 4 This is a front internal schematic diagram of a spray tower for treating high-efficiency pickling waste gas according to the present invention.

[0026] Figure 5 This is a bottom view of the internal structure of a spray tower for treating high-efficiency acid washing waste gas, as proposed in this utility model.

[0027] In the diagram: 1. Tower body; 2. Tower cover; 3. Gas outlet pipe; 4. Gas inlet pipe; 5. Liquid inlet / outlet pipe; 6. First mounting door; 7. Second mounting door; 8. Motor; 9. Mounting slot; 10. Spray tank; 11. First mounting plate; 12. Second mounting plate; 13. Mounting pipe; 14. Fourth mounting plate; 15. Demisting mesh; 16. Baffle; 17. Main spray pipe; 18. Secondary spray pipe; 19. Chemical nozzle; 20. Packing layer; 21. Liquid storage tank; 22. Connecting pipe; 23. Fifth mounting plate; 24. Filter plate; 25. Water pump; 26. T-connector; 27. Water outlet pipe; 28. Water inlet pipe; 29. ​​First rotating shaft; 30. First bevel gear; 31. Second bevel gear; 32. Second rotating shaft; 33. Scraper. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0029] Reference Figures 1-5 This utility model proposes a high-efficiency spray tower for treating acid pickling waste gas, including a tower body 1 and a tower cover 2. The tower cover 2 is detachably fixed to the top of the tower body 1. The interior of the tower body 1 is provided with an installation groove 9 and a spray tank 10. An air inlet pipe 4 is installed at the bottom of the spray tank 10 on the outer wall of the tower body 1, and the air inlet pipe 4 is connected to the interior of the spray tank 10. An air outlet pipe 3 is fixed in the middle of the top of the tower cover 2, and the air outlet pipe 3 is connected to the interior of the spray tank 10.

[0030] Furthermore, refer to Figure 3 and Figure 4 Inside the spray tank 10, from top to bottom, there are fixed first mounting plate 11, second mounting plate 12, mounting pipe 13 and fourth mounting plate 14. The mounting pipe 13 and the fourth mounting plate 14 are both set in two groups, and the fourth mounting plate 14 is located above the air inlet pipe 4. The top of the first mounting plate 11 is hinged and fixed with multiple blocks 16, and a demisting mesh 15 is fixedly snapped into the middle of the top of the first mounting plate 11, and the top of the demisting mesh 15 is attached to the bottom of the block 16.

[0031] The demister mesh 15, located at the top center of the first mounting plate, effectively intercepts tiny droplets carried in the exhaust gas. These droplets are captured by the mesh as the exhaust gas passes through the spray tower, thereby reducing the moisture content in the exhaust gas. Furthermore, because the demister mesh 15 is held in place by the baffle 16 inside the first mounting plate 11, it is easy to replace, thus ensuring the filtration effect of the demister mesh 15.

[0032] Furthermore, refer to Figure 4 Each set of mounting pipes 13 consists of two pipes, and multiple main spray pipes 17 are fixedly arranged between the two mounting pipes 13. Multiple auxiliary spray pipes 18 are fixedly installed at the bottom of each main spray pipe 17. A nozzle 19 is threadedly fixed to the outer wall of the bottom of each auxiliary spray pipe 18. The mounting pipes 13, main spray pipes 17 and auxiliary spray pipes 18 are all interconnected. The two sets of mounting pipes 13 are staggered and fixed inside the spray tank 10.

[0033] By setting up multi-layer spray pipes and atomizing nozzles 19, the spray area and spray density can be increased, allowing the waste gas to come into more full contact with the treatment liquid and improving the treatment efficiency. Furthermore, the atomizing nozzles 19 can atomize the treatment liquid into fine particles, increasing the contact area with the waste gas and thus improving the removal efficiency of pollutants in the waste gas.

[0034] Furthermore, refer to Figure 4 Each of the fourth mounting plates 14 has a packing layer 20 fixedly snapped inside. A first mounting door 6 is installed on the side wall of the tower body 1 on the side of the two packing layers 20, and the first mounting door 6 is located on the front side of the two packing layers 20. The material inside the packing layer 20 is set as high-efficiency fiber packing.

[0035] The presence of the packing layer 20 greatly increases the contact area between the gas and the liquid, which helps to improve the absorption and neutralization efficiency of pollutants in the exhaust gas. The packing layer 20 enables the gas to form a foam flow inside the tower, which can more effectively transfer and treat pollutants in the gas. By setting the first installation door 6 on the side of the packing layer 20, the packing can be easily replaced and maintained without dismantling other parts of the entire spray tower. Furthermore, the first installation door 6 facilitates the replacement of the packing layer 20 and the maintenance of the interior of the tower body 1.

[0036] Furthermore, refer to Figure 1 , Figure 3 and Figure 4 A liquid storage tank 21 is fixedly installed on one side inside the mounting groove 9. A connecting pipe 22 is fixedly installed on the top of the liquid storage tank 21, and the connecting pipe 22 extends into the spray tank 10, so that the absorbent liquid inside the spray tank 10 returns to the liquid storage tank 21 for reuse after use, and also makes the air pressure inside the spray tank 10 and the liquid storage tank 21 the same. A fifth mounting plate 23 is fixedly installed in the middle of the liquid storage tank 21. A filter plate 24 is snapped and fixed inside the fifth mounting plate 23. A second mounting door 7 is installed on the outer wall of the tower body 1 on one side of the liquid storage tank 21, and the second mounting door 7 is located on the side of the filter plate 24. An inlet and outlet pipe 5 is fixedly installed below the second mounting door 7 on the outer side of the tower body 1, and the inlet and outlet pipe 5 is connected to the inside of the liquid storage tank 21.

[0037] By setting up the filter plate 24, the absorbent liquid that has been sprayed inside the tower body 1 is filtered again when it enters the storage tank 21, thereby ensuring the effectiveness of the absorbent liquid and preventing the nozzle 19 from clogging. The second installation door 7 is located on the side of the filter plate 24, allowing operators to easily inspect and replace the filter plate 24.

[0038] Furthermore, refer to Figure 3 , Figure 4 and Figure 5A water pump 25 is fixedly installed on the other side inside the mounting groove 9. A water inlet pipe 28 is fixedly installed at the water inlet end of the water pump 25 and extends into the liquid storage tank 21. A three-way adapter 26 is fixedly connected to the water outlet end of the water pump 25. Water outlet pipes 27 are fixedly installed at the other two ends of the three-way adapter 26. Both water outlet pipes 27 extend through the mounting groove 9 into the spray tank 10. Both water outlet pipes 27 extend through two fourth mounting plates 14 inside the spray tank 10 and are fixedly connected to the two sets of mounting pipes 13 respectively.

[0039] The water pump 25 enables automatic circulation of the absorbent liquid, eliminating the need for an external pumping system and simplifying the overall structure. The three-way adapter 26 and two outlet pipes 27 ensure that the absorbent liquid is evenly distributed to the two sets of installation pipes 13, improving the spraying effect.

[0040] Furthermore, refer to Figure 2 , Figure 4 and Figure 5 A motor 8 is fixedly installed on the outside of the tower body 1. The transmission shaft of the motor 8 is coaxially fixed to a first rotating shaft 29 via a coupling. The first rotating shaft 29 rotatably passes through the tower body 1 to the middle of the first mounting plate 11 and the second mounting plate 12. A first bevel gear 30 is fixedly installed at the end of the first rotating shaft 29. A second rotating shaft 32 is rotatably fixed at the middle of the top of the second mounting plate 12. A scraper 33 is fixedly installed at the top of the second rotating shaft 32. The bottom of the scraper 33 is fitted to the bottom of the demisting mesh 15. A second bevel gear 31 is sleeved on the outer wall of the second rotating shaft 32, and the second bevel gear 31 meshes with the first bevel gear 30.

[0041] The motor 8, along with the meshing of the first bevel gear 30 and the second bevel gear 31, drives the scraper 33 to rotate. The scraper 33 automatically cleans the liquid droplets on the demister mesh 15, preventing mesh blockage and maintaining the continuous and efficient operation of the spray tower. The continuous movement of the scraper 33 effectively scrapes the liquid droplets in the exhaust gas off the demister mesh 15, improving the demisting efficiency.

[0042] Working principle: During use, exhaust gas enters the spray tank 10 through the inlet pipe 4, while the water pump 25 draws the absorbent liquid from the storage tank 21 into the installation pipe 13, and sprays it out through the nozzle 19. The sprayed absorbent liquid flows downwards into the packing layer 20, where the exhaust gas comes into contact with it. This increases the contact area between the exhaust gas and the absorbent liquid, allowing for better neutralization. The neutralized exhaust gas then passes upwards through the demister mesh 15 before being discharged from the outlet pipe 3. The demister mesh 15 filters out the absorbent liquid from the exhaust gas, and the absorbent liquid... The waste gas inside the spray tank 10 is neutralized before entering the storage tank 21 through the connecting pipe 22. The absorbent liquid first passes through the filter plate 24 inside the storage tank 21 and is then pumped out by the water pump 25 for use, forming a cycle. Furthermore, a first installation door 6 and a second installation door 7 are provided. Opening the first installation door 6 allows for easy replacement of the packing layer 20 and also facilitates maintenance and repair of the internal structure of the spray tank 10. Opening the second installation door 7 allows for easy replacement of the filter plate 24, thereby ensuring the filtration effect of the absorbent liquid and thus ensuring the effectiveness of the absorbent liquid.

[0043] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A spray tower for efficient treatment of pickling exhaust gas, comprising a tower body (1) and a tower cover (2), characterized in that: The tower body (1) top detachable fixed tower cover (2), the tower body (1) inside is equipped with installation groove (9) and spray groove (10), in the tower body (1) outer wall spray groove (10) inside bottom installation air pipe (4), and the air pipe (4) with the spray groove (10) inside through arrangement, in the tower cover (2) top middle part fixedly provided with air outlet pipe (3), the air outlet pipe (3) with the spray groove (10) inside through arrangement; In the spray groove (10) inside from top to bottom one side fixed first mounting plate (11), second mounting plate (12), installation pipe (13) and fourth mounting plate (14), the installation pipe (13) and fourth mounting plate (14) are both equipped with two groups, and the fourth mounting plate (14) is located in the upper part of the air pipe (4);The first mounting plate (11) top hinged fixedly provided with a plurality of stop blocks (16), and the first mounting plate (11) top middle part fixedly connected with demisting wire mesh (15), and the demisting wire mesh (15) top and the stop block (16) bottom fit; Each fourth mounting plate (14) inside fixedly provided with a filler layer (20), in two filler layers (20) side tower body (1) side wall installation first installation door (6), and the first installation door (6) is located in the positive side of two filler layers (20).

2. The spray tower for efficient treatment of pickling exhaust gas according to claim 1, characterized in that: Each installation pipe (13) is equipped with two, and a plurality of main spray pipes (17) are fixedly provided between the two installation pipes (13), and a plurality of auxiliary spray pipes (18) are fixedly provided at the bottom of each main spray pipe (17), a plurality of spray nozzles (19) are fixedly provided on the outer wall of the bottom of each auxiliary spray pipe (18), the installation pipe (13), the main spray pipe (17) and the auxiliary spray pipe (18) are arranged through each other, and the two installation pipes (13) are fixedly arranged in the spray groove (10) in a staggered manner.

3. The spray tower for efficient treatment of pickling exhaust gas according to claim 2, characterized in that: The installation groove (9) inside one side fixedly provided with a liquid storage tank (21), the liquid storage tank (21) top fixedly provided with a communication pipe (22), and the communication pipe (22) penetrates to the inside of the spray groove (10), a fifth mounting plate (23) is fixedly provided in the inside of the liquid storage tank (21), a filter plate (24) is fixedly provided in the inside of the fifth mounting plate (23), a second installation door (7) is fixedly provided on the outer wall of the tower body (1) on one side of the liquid storage tank (21), and the second installation door (7) is located on the positive side of the filter plate (24), an inlet and outlet liquid pipe (5) is fixedly provided on the outer side of the tower body (1) below the second installation door (7), and the inlet and outlet liquid pipe (5) penetrates the inside of the liquid storage tank (21).

4. The spray tower for efficient treatment of pickling exhaust gas according to claim 3, characterized in that: A water pump (25) is fixed on the other side of the installation groove (9), a water inlet pipe (28) is fixed on the water inlet end of the water pump (25), and the water inlet pipe (28) penetrates into the liquid storage tank (21), a three-way adapter (26) is fixedly connected to the water outlet end of the water pump (25), two water outlet pipes (27) are fixed on the other two ends of the three-way adapter (26), the two water outlet pipes (27) penetrate into the spraying groove (10) through the installation groove (9), and the two water outlet pipes (27) penetrate through the two fourth installation plates (14) and are fixedly connected to the two groups of installation pipes (13) respectively.

5. The spray tower for efficient treatment of pickling exhaust gas according to claim 4, characterized in that: A motor (8) is fixed outside the tower body (1), a first rotating shaft (29) is coaxially fixed to the transmission shaft of the motor (8) through a shaft coupling, the first rotating shaft (29) penetrates through the tower body (1) to the middle parts of the first installation plate (11) and the second installation plate (12), a first bevel gear (30) is fixed on the end of the first rotating shaft (29), a second rotating shaft (32) is rotatably fixed to the middle part of the top of the second installation plate (12), a scraper (33) is fixed on the top of the second rotating shaft (32), the bottom of the scraper (33) is in abutment with the bottom of the demisting screen (15), a second bevel gear (31) is sleeved on the outer wall of the second rotating shaft (32), and the second bevel gear (31) is in meshing connection with the first bevel gear (30).

Images