An acid gas spray absorption tower

Abstract

This utility model belongs to the field of industrial waste gas treatment technology, and in particular, an acid gas spray absorption tower, which includes a lower tower body and an upper tower body. The left side of the lower tower body is fixedly connected to an air inlet pipe. The spray absorption tower also includes: a packing box, which is installed between the lower tower body and the upper tower body. The bottom inner wall of the packing box has multiple air holes; and a spray assembly, which includes: a return pipe, a circulating pump, an adsorption liquid tank, a high-pressure water pump, a delivery pipe, an annular spray pipe, and multiple atomizing nozzles. The left end of the return pipe is fixedly connected to the bottom of the lower tower body, the circulating pump is fixedly installed on the return pipe, and the right end of the return pipe is fixedly connected to the left side of the adsorption liquid tank. This utility model achieves quick disassembly and assembly of the packing and filter screen through a simple structure, which is convenient for personnel to replace and maintain. Moreover, the externally mounted filter screen is small in size, reducing manufacturing costs. It is easy to operate and highly practical.

Description

Technical Field

[0001] This utility model relates to the field of industrial waste gas treatment technology, and in particular to an acid gas spray absorption tower. Background Technology

[0002] Acid gas absorption towers, also known as acidic gas purification towers, acid mist absorption towers, waste gas purification towers, and fiberglass acid mist purification towers, are characterized by their wide applicability, high purification efficiency, low equipment resistance, and small footprint. Typically, acid gas absorption towers primarily treat harmful gases such as hydrogen chloride (HCl), hydrogen fluoride (HF), acid mist (H₂SO₄), chromic acid mist (CrO₃), hydrogen cyanide (HCN), hydrogen sulfide (H₂S), ammonia (NH₃), and water-soluble gases such as alkaline vapors.

[0003] In the prior art, Chinese patent application number 202222670183.0 discloses a spray tail gas absorption tower for high-efficiency filtration in fumaric acid processing. The tower includes a tower body and an air inlet on one side of the tower body. A water tank is located at the bottom of the tower body, with a support block above the water tank, fixedly connected to the inner wall of the tower body. A collection mechanism is located on the support block, and several packing layers are located above the collection mechanism. A spraying mechanism is located above the packing layers. A demister is fixedly connected to the inner wall at the upper end of the tower body, and a protective mechanism is located at the top of the tower body. A sealing door is located at the front end of the tower body, corresponding to the collection mechanism. This invention intercepts particulate matter in the exhaust gas. Falling particulate matter is concentrated in the filter frame. The filter frame and filter screen can be extracted by opening the sealing door later, facilitating particulate matter treatment and preventing a large amount of particulate matter from entering the pump body and causing blockage, thereby ensuring the service life and performance of the pump body.

[0004] However, the above technical solutions have the following drawbacks: the packing layer is installed inside the tower body, making it inconvenient to replace and maintain; secondly, due to the large volume of the tower body, the filter screen installed inside the tower body is also large, increasing the manufacturing cost; and the filter screen being installed inside the tower body makes maintenance inconvenient and cannot meet the usage requirements. Therefore, this application proposes an acid gas spray absorption tower to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to solve the shortcomings of the existing technology, such as the inconvenience of replacing and maintaining the packing layer installed inside the tower body, the large volume of the tower body, the large volume of the filter screen installed inside the tower body, which increases the manufacturing cost, and the inconvenience of maintenance caused by the filter screen being installed inside the tower body, which cannot meet the usage requirements. Therefore, an acid gas spray absorption tower is proposed.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An acid gas scrubbing absorption tower includes a lower tower body and an upper tower body. An inlet pipe is fixedly connected to the left side of the lower tower body. The scrubbing absorption tower also includes:

[0008] A packing box is installed between the lower tower body and the upper tower body, and multiple air holes are provided on the bottom inner wall of the packing box;

[0009] The spray assembly includes: a reflux pipe, a circulating pump, an adsorption liquid tank, a high-pressure water pump, a delivery pipe, an annular spray pipe, and multiple atomizing nozzles. The left end of the reflux pipe is fixedly connected to the bottom of the lower tower body. The circulating pump is fixedly installed on the reflux pipe. The right end of the reflux pipe is fixedly connected to the left side of the adsorption liquid tank. A liquid inlet is provided at the top of the adsorption liquid tank. The high-pressure water pump is fixedly installed on the right side of the adsorption liquid tank. The bottom end of the delivery pipe is fixedly connected to the high-pressure water pump. The top end of the delivery pipe passes through the right side of the upper tower body and extends into the interior of the upper tower body. The annular spray pipe is fixedly connected to the top end of the delivery pipe and is fixedly installed on the inner wall of the upper tower body. Multiple atomizing nozzles are all fixedly connected to the bottom of the annular spray pipe.

[0010] A filter assembly is installed on the return pipe and is used to filter and purify the adsorption liquid.

[0011] As a preferred embodiment of this utility model, multiple bolts are installed at equal intervals in a ring between the top of the lower tower body, the bottom of the upper tower body, and the packing box.

[0012] As a preferred embodiment of this utility model, sealing gaskets are fixedly installed at the top and bottom of the lower tower body and the upper tower body, respectively, with the two sealing gaskets contacting the top and bottom of the packing box.

[0013] As a preferred embodiment of this utility model, a demister is installed on the top of the upper tower body. The demister is connected to the interior of the upper tower body, and an air outlet pipe is fixedly connected to the top of the demister. An air pump is fixedly installed on the air outlet pipe.

[0014] As a preferred embodiment of this utility model, a drain pipe is fixedly connected to the front side of the adsorption liquid tank, and a drain valve is fixedly installed on the drain pipe.

[0015] As a preferred embodiment of this utility model, the filter assembly includes a filter box, a sealing cover, and a filter screen. The filter box is installed on the return pipe, the sealing cover is hinged to the top of the filter box, and the bottom end of the filter screen is inserted into the interior of the filter box.

[0016] As a preferred embodiment of this utility model, a limiting groove is provided on the inner wall of the filter box, and the bottom end of the filter screen can be detached and inserted into the inside of the limiting groove.

[0017] Beneficial effects:

[0018] 1. To solve the problem of inconvenience in replacing and maintaining the packing, the lower tower body, upper tower body and packing box are designed as separate units, which makes it easy to disassemble and maintain the packing box.

[0019] 2. In order to filter and purify the refluxed adsorption liquid, the filter screen is placed on the outside of the tower body, which makes it easy for personnel to disassemble and maintain the filter screen. The externally placed filter screen is small in size, which reduces manufacturing costs and is highly practical.

[0020] This invention achieves quick assembly and disassembly of the packing and filter screen through a simple structure, facilitating replacement and maintenance by personnel. Furthermore, the externally mounted filter screen is small in size, reducing manufacturing costs. It is easy to operate and highly practical. Attached Figure Description

[0021] Figure 1 This is a three-dimensional front view of the structure of this utility model;

[0022] Figure 2 This is a three-dimensional view of a partial structure of the present invention;

[0023] Figure 3 This is a three-dimensional structural diagram of the packing box and pores of this utility model;

[0024] Figure 4 This is a three-dimensional structural diagram of the return pipe, filter box, limiting groove, and filter screen of this utility model.

[0025] In the diagram: 1. Lower tower body; 2. Packing box; 3. Upper tower body; 4. Bolt; 5. Inlet pipe; 6. Demister; 7. Outlet pipe; 8. Suction pump; 9. Air hole; 10. Return pipe; 11. Circulation pump; 12. Adsorption liquid tank; 13. Liquid inlet; 14. Drain pipe; 15. Drain valve; 16. High-pressure water pump; 17. Liquid delivery pipe; 18. Annular nozzle; 19. Atomizing nozzle; 20. Filter box; 21. Sealing cover; 22. Limiting groove; 23. Filter screen. Detailed Implementation

[0026] 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.

[0027] Example

[0028] Reference Figures 1-4 An acid gas scrubbing absorption tower includes a lower tower body 1 and an upper tower body 3. An inlet pipe 5 is fixedly connected to the left side of the lower tower body 1. The scrubbing absorption tower also includes:

[0029] Packing box 2 is installed between the lower tower body 1 and the upper tower body 3. Multiple air holes 9 are opened on the bottom inner wall of the packing box 2.

[0030] The spray assembly includes: a reflux pipe 10, a circulation pump 11, an adsorption liquid tank 12, a high-pressure water pump 16, a delivery pipe 17, an annular spray pipe 18, and multiple atomizing nozzles 19. The left end of the reflux pipe 10 is fixedly connected to the bottom of the lower tower body 1. The circulation pump 11 is fixedly installed on the reflux pipe 10. The right end of the reflux pipe 10 is fixedly connected to the left side of the adsorption liquid tank 12. The top of the adsorption liquid tank 12 is provided with a liquid inlet 13. The high-pressure water pump 16 is fixedly installed on the right side of the adsorption liquid tank 12. The bottom end of the delivery pipe 17 is fixedly connected to the high-pressure water pump 16. The top end of the delivery pipe 17 passes through the right side of the upper tower body 3 and extends into the interior of the upper tower body 3. The annular spray pipe 18 is fixedly connected to the top end of the delivery pipe 17 and is fixedly installed on the inner wall of the upper tower body 3. Multiple atomizing nozzles 19 are all fixedly connected to the bottom of the annular spray pipe 18.

[0031] The filter assembly is installed on the return pipe 10 and is used to filter and purify the adsorption liquid.

[0032] To address the problem of inconvenient replacement and maintenance of the packing material, such as Figure 1 As shown, by setting the lower tower body 1, upper tower body 3 and packing box 2 as separate units, it is convenient to disassemble and maintain the packing box 2. In addition, the exhaust gas is transported into the lower tower body 1 through the air inlet pipe 5, and then the exhaust gas is filtered through the packing. Then, by starting the high-pressure water pump 16, the adsorbent liquid in the adsorption liquid tank 12 can be extracted and enter the interior of the annular nozzle 18 through the liquid delivery pipe 17. Then, it is atomized and sprayed out through multiple atomizing nozzles 19. At this time, the adsorbent liquid will cover the entire flow section of the acidic exhaust gas, thereby achieving comprehensive absorption of acidic substances in the exhaust gas. Then, the adsorbent liquid flows down into the return pipe 10, and then the circulation pump 11 is started to recover the adsorbent liquid into the interior of the adsorption liquid tank 12 for subsequent recycling.

[0033] To facilitate the disassembly and assembly of the lower tower body 1, the upper tower body 3, and the packing box 2, and to make it easy to replace and maintain the packing, multiple bolts 4 are installed at equal intervals in a ring between the top of the lower tower body 1, the bottom of the upper tower body 3, and the packing box 2.

[0034] To improve the sealing performance between the lower tower body 1, the upper tower body 3 and the packing box 2, sealing gaskets are fixedly installed at the top of the lower tower body 1 and the bottom of the upper tower body 3, respectively, with the two sealing gaskets contacting the top and bottom of the packing box 2.

[0035] To facilitate exhaust and remove moisture and other fine particles from the exhaust gas, a demister 6 is installed on the top of the upper tower body 3. The demister 6 is connected to the interior of the upper tower body 3, and an exhaust pipe 7 is fixedly connected to the top of the demister 6. An air pump 8 is fixedly installed on the exhaust pipe 7.

[0036] To facilitate the discharge of saturated adsorption liquid, a drain pipe 14 is fixedly connected to the front side of the adsorption liquid tank 12, and a drain valve 15 is fixedly installed on the drain pipe 14.

[0037] To filter and purify the refluxed adsorption liquid, a filter box 20 is installed on the reflux pipe 10, and a filter screen 23 is installed inside the filter box 20. This allows small particles inside the adsorption liquid to be filtered as it passes through the filter box 20, preventing impurities from damaging the circulation pump 11 and the high-pressure water pump 16. By placing the filter screen 23 outside the tower body, it is easy for personnel to disassemble and maintain the filter screen 23. Moreover, the externally placed filter screen 23 is small in size, reducing manufacturing costs and making it highly practical. The filter assembly includes a filter box 20, a sealing cover 21, and a filter screen 23. The filter box 20 is installed on the reflux pipe 10, the sealing cover 21 is hinged to the top of the filter box 20, and the bottom end of the filter screen 23 is inserted into the inside of the filter box 20.

[0038] To facilitate the installation and positioning of the filter screen 23, a positioning groove 22 is provided on the inner wall of the filter box 20, and the bottom end of the filter screen 23 can be detached and inserted into the inside of the positioning groove 22.

[0039] It should be noted that the specific models of demister 6, air pump 8, circulation pump 11, drain valve 15, and high-pressure water pump 16 used should be selected by those skilled in the art. Furthermore, the demister 6, air pump 8, circulation pump 11, drain valve 15, and high-pressure water pump 16 mentioned above are all existing technologies and will not be elaborated upon in this solution.

[0040] The demister 6 uses existing technology and can be directly used with the structure of the patent with application number 202222670183.0, so it will not be described in detail.

[0041] The working principle of this utility model is as follows: In use, firstly, connect the demister 6, suction pump 8, circulation pump 11, drain valve 15, and high-pressure water pump 16 to an external power source. Then, by setting the lower tower body 1, upper tower body 3, and packing box 2 as separate units, and by using multiple bolts 4, the packing box 2 can be easily disassembled and maintained. Additionally, exhaust gas is transported into the lower tower body 1 through the air inlet pipe 5. The exhaust gas is then filtered through the packing. Next, by starting the high-pressure water pump 16, the adsorbent liquid inside the adsorption tank 12 is extracted and enters the annular spray pipe 18 through the delivery pipe 17. Then, it is atomized and sprayed out through multiple atomizing nozzles 19. At this time, the adsorbent liquid will cover the entire flow cross-section of the acidic exhaust gas. The system can fully absorb acidic substances in the waste gas. The adsorbent flows down into the return pipe 10, and then the circulation pump 11 is started to recover the adsorbent into the adsorbent tank 12 for subsequent recycling. In addition, by installing a filter box 20 on the return pipe 10 and installing a filter screen 23 inside the filter box 20, small particles inside the adsorbent can be filtered when the adsorbent passes through the filter box 20, preventing impurities from damaging the circulation pump 11 and the high-pressure water pump 16. By placing the filter screen 23 on the outside of the tower, it is easy for personnel to disassemble and maintain the filter screen 23. Moreover, the externally placed filter screen 23 is small in size, which reduces manufacturing costs and is highly practical.

[0042] 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. An acid gas scrubbing absorption tower, comprising a lower tower body (1) and an upper tower body (3), wherein an inlet pipe (5) is fixedly connected to the left side of the lower tower body (1), characterized in that, The spray absorption tower also includes: A packing box (2) is installed between the lower tower body (1) and the upper tower body (3). Multiple air holes (9) are provided on the bottom inner wall of the packing box (2). The spray assembly includes: a return pipe (10), a circulation pump (11), an adsorption liquid tank (12), a high-pressure water pump (16), a delivery pipe (17), an annular spray pipe (18), and multiple atomizing nozzles (19). The left end of the return pipe (10) is fixedly connected to the bottom of the lower tower body (1), the circulation pump (11) is fixedly installed on the return pipe (10), and the right end of the return pipe (10) is fixedly connected to the left side of the adsorption liquid tank (12). The top of the adsorption liquid tank (12) is provided with a liquid inlet. (13) A high-pressure water pump (16) is fixedly installed on the right side of the adsorption liquid tank (12). The bottom end of the infusion pipe (17) is fixedly connected to the high-pressure water pump (16). The top end of the infusion pipe (17) passes through the right side of the upper tower body (3) and extends into the interior of the upper tower body (3). The annular nozzle (18) is fixedly connected to the top end of the infusion pipe (17). The annular nozzle (18) is fixedly installed on the inner wall of the upper tower body (3). Multiple atomizing nozzles (19) are fixedly connected to the bottom of the annular nozzle (18). The filter assembly is installed on the return pipe (10) and is used to filter and purify the adsorbent.

2. An acid gas spray absorber according to claim 1, wherein, Multiple bolts (4) are installed at equal intervals in a ring between the top of the lower tower body (1), the bottom of the upper tower body (3), and the packing box (2).

3. An acid gas spray absorber according to claim 1, wherein, The top of the lower tower body (1) and the bottom of the upper tower body (3) are both fixedly installed with sealing gaskets, and the two sealing gaskets are in contact with the top and bottom of the packing box (2) respectively.

4. An acid gas spray absorber according to claim 1, wherein, A demister (6) is installed on the top of the upper tower body (3). The demister (6) is connected to the interior of the upper tower body (3). An air outlet pipe (7) is fixedly connected to the top of the demister (6). An air pump (8) is fixedly installed on the air outlet pipe (7).

5. An acid gas spray absorber according to claim 1 wherein, The front side of the adsorption liquid tank (12) is fixedly connected to a drain pipe (14), and a drain valve (15) is fixedly installed on the drain pipe (14).

6. An acid gas spray absorber according to claim 1 wherein, The filter assembly includes a filter box (20), a sealing cover (21), and a filter screen (23). The filter box (20) is installed on the return pipe (10), the sealing cover (21) is hinged to the top of the filter box (20), and the bottom end of the filter screen (23) is inserted into the interior of the filter box (20).

7. An acid gas spray absorber according to claim 6 wherein, A limiting groove (22) is provided on the inner wall of the filter box (20), and the bottom end of the filter screen (23) can be detached and inserted into the inside of the limiting groove (22).

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