Multi-stage spraying absorption tower for pharmaceutical chemical production

Abstract

The utility model provides a multistage spray absorption tower for pharmaceutical chemical industry production relates to spray absorption tower technical field, including tower body, water tank and upper annular spray pipe, the lower part of tower body is provided with lower tower body, in the lower tower body is provided with the water tank, the right lower part of the water tank is connected with return pipe, and the return pipe is provided with the water pump, the upper annular spray pipe is connected with the lower annular spray pipe. A water tank is arranged in the tower body, spraying liquid is contained in the water tank, sleeves are arranged in the middle and on the upper portion of the tower body, an upper annular spraying pipe and a lower annular spraying pipe are installed in the sleeves on the upper portion and the lower portion respectively, a top cylinder is arranged on the top of the tower body, an exhaust pipe is connected to the left side of the top cylinder, and a side sleeve frame is installed in the middle of the exhaust pipe. According to the spray absorption tower, the spray area of the spray pipe is increased, the spray washing area of the spray pipe is increased, the washing is more uniform and clean, each filler layer is obliquely arranged, the filler absorption area is also increased, and the working efficiency of the spray absorption tower is favorably improved.

Description

Technical Field

[0001] This utility model relates to the field of spray absorption tower technology, specifically to a multi-stage spray absorption tower for pharmaceutical and chemical production. Background Technology

[0002] Spray absorption towers are specialized equipment for treating waste gas. Acid mist waste gas is introduced into the tower through a duct, and the waste gas undergoes a gas-liquid two-phase contact absorption and neutralization reaction with sodium hydroxide absorbent. After purification, the acid mist waste gas is discharged into the atmosphere to achieve waste gas treatment.

[0003] The specification of a multi-stage spray absorption tower in the prior art (publication number CN215463238U) mentions that it "includes a base and a first vertical plate, with multiple first vertical plates fixedly connected to the upper surface of the base, and a reaction device installed above the base; the reaction device includes a water tank, a tower body, convex rods, an air inlet pipe, and a first exhaust pipe; the lower surface of the water tank is fixedly connected to the base, the upper surface of the water tank is fixedly connected to the tower body, multiple convex rods are fixedly connected to the left side of the tower body, an air inlet pipe is fixedly connected to the inside of the convex rods, and multiple first exhaust pipes are fixedly connected to the right side of the air inlet pipe, with the outer wall of the first exhaust pipe fixedly connected to the inside of the tower body." However, the spray and filling areas of the spray absorption tower in the prior art are small, resulting in uneven spray washing and affecting the overall efficiency of spray absorption. Utility Model Content

[0004] To overcome the shortcomings of existing technologies, a multi-stage spray absorption tower for pharmaceutical and chemical production is provided to solve the problem that the spray and packing areas of existing spray absorption towers are small, resulting in uneven spray washing and affecting the overall efficiency of spray absorption.

[0005] To achieve the above objectives, a multi-stage spray absorption tower for pharmaceutical and chemical production is provided, comprising a tower body, a water tank, and an upper annular spray pipe. A lower tower body is provided at the bottom of the tower body, and a water tank is provided inside the lower tower body. A return pipe is connected to the lower right part of the water tank, and a water pump is installed on the return pipe. The water tank is filled with spray liquid. Sleeves are provided at the middle and upper parts of the tower body, and an upper annular spray pipe and a lower annular spray pipe are respectively installed in the upper and lower sleeves. A top cylinder is provided at the top of the tower body, and an exhaust pipe is connected to the left side of the top cylinder. A side sleeve is installed in the middle of the exhaust pipe.

[0006] Furthermore, an air inlet is provided on the lower left side of the tower body, and a first packing layer is provided on the upper part of the lower tower body, and the first packing layer is made of metal plate packing material.

[0007] Furthermore, the tower body contains a fourth packing layer, a third packing layer, and a second packing layer installed sequentially from top to bottom in the middle section. The fourth packing layer is made of polypropylene packing material, the third packing layer is made of ceramic packing material, and the second packing layer is made of metal mesh packing material.

[0008] Furthermore, an air extractor is installed inside the top cylinder, and a dehumidifier is installed below the air extractor.

[0009] Furthermore, an inlet pipe is provided in the upper left part of the water tank, and a primary filter screen, a secondary filter screen, and a high-grade filter screen are arranged sequentially from top to bottom in the upper part of the water tank.

[0010] Furthermore, the right end of the lower annular spray pipe is connected to a second external connecting pipe, the other end of which is connected to the return pipe, and the right end of the upper annular spray pipe is connected to a first external connecting pipe, the other end of which is connected to the return pipe. The lower annular spray pipe and the upper annular spray pipe have the same structural configuration.

[0011] Furthermore, an inner hook is provided on the inner wall of the sleeve, and the outer ring of the upper annular spray pipe is hung on the inner hook, and multiple spray heads are provided on the lower side of the upper annular spray pipe.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. The present invention sets up a multi-layer packing structure in the tower body because the porous structure and surface characteristics of the packing help the pollutants in the waste gas to dissolve and adsorb when they come into contact with the spray liquid, thereby promoting the transfer of media and realizing the purification of waste gas; the shape and arrangement of the packing can evenly and effectively distribute the spray liquid, ensuring that the waste gas can be fully contacted and treated when it enters the spray tower, optimizing the liquid distribution and improving the waste gas treatment status.

[0014] 2. The purpose of this dehumidifier is to dehumidify the upward-flowing airflow. Under the action of the air pump, the dehumidified airflow is driven into the exhaust pipe for easy separate delivery.

[0015] 3. The water tank of this utility model can deliver spray liquid to the lower and upper annular spray pipes through the return pipe, and can also filter and reuse the used spray liquid through three layers of precision filtration of primary filter screen, intermediate filter screen and high-grade filter screen, which is more environmentally friendly and economical.

[0016] 4. In this utility model, the lower annular spray pipe and the upper annular spray pipe can be used as the middle and upper spray structures respectively. The dual spray structure not only makes the spraying more uniform, but also makes the washing cleaner. Attached Figure Description

[0017] Figure 1This is a front view schematic diagram of an embodiment of the present utility model;

[0018] Figure 2 This is a cross-sectional schematic diagram of an embodiment of the present utility model;

[0019] Figure 3 This is a schematic diagram of a water tank according to an embodiment of the present utility model;

[0020] Figure 4 This is a schematic diagram of the upper annular spray pipe according to an embodiment of the present utility model.

[0021] In the diagram: 1. Tower body; 10. Sleeve; 11. Fourth packing layer; 12. Third packing layer; 13. Second packing layer; 14. Dehumidifier; 15. Air extractor; 16. Top cylinder; 17. Exhaust pipe; 18. Side sleeve; 19. Lower tower body; 100. First packing layer; 101. Air inlet; 102. Inner hook; 2. Water tank; 20. Return pipe; 21. Water pump; 22. Liquid inlet; 23. Primary filter screen; 24. Intermediate filter screen; 25. Advanced filter screen; 26. Spray liquid; 3. Lower annular spray pipe; 30. Second external connecting pipe; 4. Upper annular spray pipe; 40. First external connecting pipe; 41. Spray head. Detailed Implementation

[0022] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. The specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model. Specific details such as particular system structures and technologies are provided to facilitate a more thorough understanding of the embodiments of this utility model. The described embodiments are some, but not all, of the embodiments disclosed herein. However, those skilled in the art should understand that the present utility model can also be implemented in other embodiments without these specific details. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without inventive effort are within the scope of protection of this disclosure.

[0023] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0024] Figure 1 This is a front view schematic diagram of an embodiment of the present utility model. Figure 2 This is a cross-sectional schematic diagram of an embodiment of the present utility model. Figure 3 This is a schematic diagram of the water tank according to an embodiment of the present utility model. Figure 4 This is a schematic diagram of the upper annular spray pipe according to an embodiment of the present utility model.

[0025] Reference Figures 1 to 4As shown, this utility model provides a multi-stage spray absorption tower for pharmaceutical and chemical production, including a tower body 1, a water tank 2, and an upper annular spray pipe 4. A lower tower body 19 is provided at the lower part of the tower body 1, and a water tank 2 is provided inside the lower tower body 19. A return pipe 20 is connected to the lower right part of the water tank 2, and a water pump 21 is installed on the return pipe 20. Spray liquid 26 is contained in the water tank 2. Sleeves 10 are provided at the middle and upper parts of the tower body 1, and an upper annular spray pipe 4 and a lower annular spray pipe 3 are respectively installed in the upper and lower sleeves 10. A top cylinder 16 is provided at the top of the tower body 1, and an exhaust pipe 17 is connected to the left side of the top cylinder 16. A side sleeve 18 is installed in the middle of the exhaust pipe 17.

[0026] In this embodiment, an air inlet 101 is provided on the lower left side of the tower body 1, and a first packing layer 100 is provided on the upper part of the lower tower body 19. The first packing layer 100 is made of metal plate packing material. The fourth packing layer 11, the third packing layer 12 and the second packing layer 13 are installed in the middle of the tower body 1 from top to bottom. The fourth packing layer 11 is made of polypropylene packing material, the third packing layer 12 is made of ceramic packing material and the second packing layer 13 is made of metal mesh packing material.

[0027] As a preferred embodiment, the present invention provides a multi-layer packing structure in the tower body 1. This is because the porous structure and surface characteristics of the packing help the pollutants in the waste gas to dissolve and adsorb when they come into contact with the spray liquid, thereby promoting media transfer and achieving waste gas purification. The shape and arrangement of the packing can evenly and effectively distribute the spray liquid, ensuring that the waste gas can be fully contacted and treated when it enters the spray tower, optimizing the liquid distribution and improving the waste gas treatment status.

[0028] In this embodiment, an exhaust fan 15 is installed inside the top cylinder 16, and a dehumidifier 14 is provided below the exhaust fan 15.

[0029] As a preferred embodiment, the dehumidifier 14 of this utility model is designed to dehumidify the upward-flowing airflow. Under the action of the air extractor 15, the dehumidified airflow is driven into the exhaust pipe 17 for easy separate delivery.

[0030] In this embodiment, an inlet pipe 22 is provided in the upper left part of the water tank 2, and a primary filter screen 23, a secondary filter screen 24 and a high-grade filter screen 25 are arranged sequentially from top to bottom in the upper part of the water tank 2.

[0031] As a preferred embodiment, the water tank 2 of this utility model can, on the one hand, transport spray liquid to the lower annular spray pipe 3 and the upper annular spray pipe 4 through the return pipe 20, and on the other hand, filter the used spray liquid through three layers of precision filtration of primary filter screen 23, intermediate filter screen 24 and high-grade filter screen 25, making it more environmentally friendly and economical.

[0032] In this embodiment, the right end of the lower annular spray pipe 3 is connected to a second external connecting pipe 30, and the other end of the second external connecting pipe 30 is connected to the return pipe 20. The right end of the upper annular spray pipe 4 is connected to a first external connecting pipe 40, and the other end of the first external connecting pipe 40 is connected to the return pipe 20. The lower annular spray pipe 3 and the upper annular spray pipe 4 have the same structure. An inner hook 102 is provided on the inner side wall of the sleeve 10, and the outer ring of the upper annular spray pipe 4 is hung on the inner hook 102. Multiple spray heads 41 are provided on the lower side of the upper annular spray pipe 4.

[0033] As a preferred embodiment, the lower annular spray pipe 3 and the upper annular spray pipe 4 in this utility model can be used as the middle and upper spray structures, respectively. The dual spray structure not only makes the spraying more uniform, but also makes the spraying and washing cleaner.

[0034] This invention effectively solves the problem that the spray and filling layers of existing spray absorption towers have small areas, resulting in uneven spray washing and affecting the overall efficiency of spray absorption. This invention not only increases the spray area of ​​the spray pipe, thus increasing the spray washing area and making the washing more uniform and clean, but also adopts an inclined setting for each layer of filling material, which also increases the absorption area of ​​the filling material and helps to improve the working efficiency of the spray absorption tower.

[0035] The above embodiments are used to explain and illustrate the present utility model, and not to limit the utility model. Any modifications and changes made to the present utility model within the spirit and scope of the claims should be included within the protection scope of the present utility model.

Claims

1. A multi-stage spray absorption tower for pharmaceutical and chemical production, characterized in that: The tower includes a tower body (1), a water tank (2) and an upper annular spray pipe (4). The lower part of the tower body (1) is provided with a lower tower body (19), and a water tank (2) is provided inside the lower tower body (19). A return pipe (20) is connected to the lower right part of the water tank (2), and a water pump (21) is installed on the return pipe (20). The water tank (2) is filled with spray liquid (26). The middle and upper parts of the tower body (1) are provided with sleeves (10), and the upper annular spray pipe (4) and the lower annular spray pipe (3) are respectively installed in the upper and lower sleeves (10). The top of the tower body (1) is provided with a top cylinder (16), and an exhaust pipe (17) is connected to the left side of the top cylinder (16). A side sleeve (18) is installed in the middle of the exhaust pipe (17).

2. The multi-stage spray absorption tower for pharmaceutical and chemical production according to claim 1, characterized in that, An air inlet (101) is provided on the lower left side of the tower body (1), and a first packing layer (100) is provided on the upper part of the lower tower body (19), and the first packing layer (100) is made of metal plate packing material.

3. The multi-stage spray absorption tower for pharmaceutical and chemical production according to claim 1, characterized in that, The tower body (1) is equipped with a fourth packing layer (11), a third packing layer (12), and a second packing layer (13) in the middle from top to bottom. The fourth packing layer (11) is made of polypropylene, the third packing layer (12) is made of ceramic, and the second packing layer (13) is made of metal mesh.

4. The multi-stage spray absorption tower for pharmaceutical and chemical production according to claim 1, characterized in that, An air extractor (15) is installed inside the top cylinder (16), and a dehumidifier (14) is provided below the air extractor (15).

5. A multi-stage spray absorption tower for pharmaceutical and chemical production according to claim 1, characterized in that, The upper left part of the water tank (2) is provided with an inlet pipe (22), and the upper part of the water tank (2) is provided with a primary filter screen (23), a secondary filter screen (24) and a high-level filter screen (25) from top to bottom.

6. A multi-stage spray absorption tower for pharmaceutical and chemical production according to claim 1, characterized in that, The right end of the lower annular spray pipe (3) is connected to a second external connecting pipe (30), and the other end of the second external connecting pipe (30) is connected to the return pipe (20). The right end of the upper annular spray pipe (4) is connected to a first external connecting pipe (40), and the other end of the first external connecting pipe (40) is connected to the return pipe (20). The lower annular spray pipe (3) and the upper annular spray pipe (4) have the same structural configuration.

7. A multi-stage spray absorption tower for pharmaceutical and chemical production according to claim 1, characterized in that, The inner wall of the sleeve (10) is provided with an inner hook (102), and the outer ring of the upper annular spray pipe (4) is hung on the inner hook (102), and multiple spray heads (41) are provided on the lower side of the upper annular spray pipe (4).

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