An acid mist absorption tower for dye intermediate production

Abstract

The utility model relates to acid mist absorption device technical field, specifically is with acid mist absorption tower for dye intermediate production, the scraping assembly includes the drive motor fixedly connected in the absorption bin top, the output of drive motor has drive rod through the shaft coupling coaxial transmission, drive rod is hollow and hollow plate is fixedly connected with the outer wall intercommunication, the inner wall sliding connection of hollow plate has the scraping plate, the outer surface fixedly connected with equipment bin of absorption bin, the inner bottom fixedly connected with circulating pump of equipment bin. The utility model circulation pump utilizes the water pipe and the water inlet ring and is connected with drive rod, can pump the reaction liquid into drive rod, through hollow drive rod and hollow plate, utilize water pressure to make the scraping plate slide on the inner wall of hollow plate, make it and the inner wall of absorption bin abut, through the rotation to the inner wall of absorption bin and carry out the fast scraping, improve its cleaning effect and reaction quality in the reaction process.

Description

Technical Field

[0001] This utility model relates to the technical field of acid mist absorption devices, specifically an acid mist absorption tower for the production of dye intermediates. Background Technology

[0002] An acid mist absorption tower for dye intermediate production is an environmental protection device for treating acidic waste gases such as HCl, H2SO4, and NOx generated during production processes (such as nitration, sulfonation, and acidification reactions). It dissolves and neutralizes the acid mist through gas-liquid contact, achieving compliant emissions and improving environmental protection during construction. Utility model patent CN222738842U discloses an acid mist absorption tower, including a tower body, rotating motors at both ends of the top of the tower body, and an alkaline solution injection pipe located on one side of the top of the tower body. The tower body includes a feed pipe inside the tower body and a drain pipe at the bottom of the tower body. Both the feed pipe and the drain pipe have control valves at their ends furthest from the tower body. The output ends of both sets of rotating motors are connected to rotating rods that penetrate into the tower body. The device allows for manual control of the feed pipe and drain pipe via two sets of control valves. The acid mist is fed into the solution inside the tower through the feed pipe for neutralization. The rotating motor and rotating rod drive the stirring rod to stir the solution, thereby increasing the efficiency of the neutralization reaction, accelerating the absorption of acid mist, and improving the purification efficiency of the absorption tower.

[0003] While the aforementioned device, through the coordinated operation of components such as the feed pipe, rotating motor, and rotating rod, improves reaction uniformity and thus efficiency during the absorption tower's operation via stirring, prolonged use can lead to impurity accumulation on the inner wall of the absorption tower due to immersion in the solution. This impurity layer can negatively impact the long-term performance of the absorption tower. Therefore, there is a need to develop an acid mist absorption tower for dye intermediate production that promotes smooth reaction while preventing impurity accumulation on the inner wall. Utility Model Content

[0004] To address the above technical problems, this utility model provides an acid mist absorption tower for dye intermediate production that promotes smooth reaction while preventing impurity accumulation on the inner wall, thus solving the problem of impurity accumulation on the inner wall of existing absorption towers after long-term use.

[0005] To solve the above-mentioned technical problems, the present invention provides an acid mist absorption tower for the production of dye intermediates, comprising an absorption chamber, a scraping assembly inside the absorption chamber, a drive motor fixedly connected to the top of the absorption chamber, a drive rod coaxially driven by the output end of the drive motor through a coupling, the drive rod being hollow and having a hollow plate fixedly connected to its outer wall, a scraping plate slidably connected to the inner wall of the hollow plate, a scraping groove formed on the outer surface of the scraping plate, the scraping plate being hollow and having a spray groove formed at its top, a water inlet ring rotatably sleeved at the bottom of the outer wall of the drive rod, an equipment chamber fixedly connected to the outer surface of the absorption chamber, a circulation pump fixedly connected to the inner bottom of the equipment chamber, and the output end of the circulation pump being fixedly connected to the inner wall of the water inlet ring through a water pipe.

[0006] Furthermore, an air inlet device is installed on the outer wall of the absorption chamber, and an air tank is fixedly connected to the top of the air inlet device. The output end of the air inlet device is fixedly connected to the inner bottom end of the absorption chamber through an air inlet pipe.

[0007] Furthermore, an inlet chamber is fixedly connected to the top of the absorption chamber, a filter plate is snapped onto the inner wall of the inlet chamber, and an inlet bend is fixedly connected to the top of the inlet chamber.

[0008] Furthermore, a monitoring instrument is fixedly connected to the top of the gas tank, and a connecting pipe is installed on the outer wall of the gas tank.

[0009] Furthermore, a support column is fixedly connected to the bottom of the absorption chamber, and there are multiple support columns. An installation plate is fixedly connected to the bottom of each support column.

[0010] Furthermore, the inner wall of the absorption chamber is coated with a corrosion-resistant coating, and the outer surface of the absorption chamber is coated with an anti-rust coating and an anti-corrosion coating.

[0011] This utility model has the following advantages compared with the prior art:

[0012] 1. This utility model features a hollow drive rod connected to a hollow plate, with a scraper slidably connected to the hollow plate. A circulation pump is connected to the equipment compartment, and the pump, via a water pipe and inlet ring, is connected to the drive rod to pump the reaction liquid into the drive rod. Through the hollow drive rod and hollow plate, water pressure causes the scraper to slide against the inner wall of the hollow plate, bringing it into contact with the inner wall of the absorption compartment. Rotation of the scraper quickly scrapes away the inner wall of the absorption compartment, improving the cleaning effect and reaction quality during the reaction process.

[0013] 2. This utility model connects an inlet chamber to the top of the absorption chamber and sets up a filter plate inside the inlet chamber. Under the action of the filter plate, particulate impurities in the reaction liquid can be filtered out, eliminating the adverse effects of impurities on the reaction. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the internal structure of the absorption chamber in this utility model.

[0016] Figure 3 This is a schematic diagram of the scraping plate in this utility model.

[0017] Figure 4 This is a schematic diagram of the internal structure of the liquid inlet chamber in this utility model.

[0018] In the diagram: 1. Absorption chamber; 2. Drive motor; 3. Drive rod; 4. Hollow plate; 5. Scraper; 6. Water inlet ring; 7. Equipment chamber; 8. Circulation pump; 9. Water pipe; 10. Air inlet device; 11. Air tank; 12. Air inlet pipe; 13. Liquid inlet chamber; 14. Filter plate; 15. Liquid inlet bend; 16. Monitoring instrument; 17. Support column. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] like Figure 1-4 The acid mist absorption tower for dye intermediate production shown includes an absorption chamber 1 and a scraping assembly. The scraping assembly includes a drive motor 2 fixedly connected to the top of the absorption chamber 1 by bolts. The output end of the drive motor 2 is coaxially driven by a drive rod 3 through a coupling. The drive rod 3 is hollow and its outer wall is fixedly connected to a hollow plate 4. A scraping plate 5 is slidably connected to the inner wall of the outer end of the hollow plate 4. A scraping groove is opened on the outer surface of the scraping plate 5. The scraping plate 5 is hollow and its top end is opened with a spray groove. A water inlet ring 6 is rotatably sleeved on the lower outer wall of the drive rod 3. An equipment chamber 7 is fixedly connected to the outer surface of the absorption chamber 1. The equipment chamber 7 is connected to the absorption chamber 1. A circulation pump 8 is fixedly connected to the inner bottom end of the equipment chamber 7 by bolts. The input end of the circulation pump 8 is located inside the equipment chamber 7 and is connected to the internal space of the chamber. The output end of the circulation pump 8 is fixedly connected to the inner wall of the water inlet ring 6 through a water pipe 9.

[0021] Specifically, through the design of the scraping assembly, the various components work together to scrape the inner wall of the absorption chamber 1 during operation, preventing impurities from accumulating and reducing the reaction quality. The drive motor 2 drives the drive rod 3 to rotate rapidly, causing multiple hollow plates 4 to rotate inside the absorption chamber 1, thus stirring the liquid and improving the uniformity of the reaction. The circulation pump 8 pumps the reaction liquid into the hollow plates 4 through the water pipe 9, pushing the scraping plates 5 to slide inside the hollow plates 4. This causes the scraping plates 5 to come into contact with the inner wall of the absorption chamber 1, and with continuous stirring, the inner wall of the chamber is scraped, removing impurities adhering to the inner wall. The reaction liquid is also sprayed out through the spray trough, which improves the mixing degree with the reaction liquid and greatly improves the reaction quality. When the circulation pump 8 is turned off, the liquid in the scraping plates 5 will gradually flow back through the drive rod 3.

[0022] An air inlet device 10 is installed on the outer wall of the absorption chamber 1. A gas tank 11 is fixedly connected to the top of the air inlet device 10. The output end of the air inlet device 10 is fixedly connected to the inner bottom end of the absorption chamber 1 through an air inlet pipe 12. A monitoring instrument 16 is fixedly connected to the top of the gas tank 11. A connecting pipe is installed on the outer wall of the gas tank 11. The connecting pipe is used to connect to the gas outlet. A liquid inlet chamber 13 is installed at the top of the absorption chamber 1. A filter plate 14 is snapped onto the inner wall of the liquid inlet chamber 13. A liquid inlet bend pipe 15 is installed at the top of the liquid inlet chamber 13.

[0023] Specifically, the air inlet device 10 is an existing device, similar to a gas compressor. Through the setting of the air inlet device 10, gas can be transported into the interior of the absorption chamber 1 via the air inlet device 10 and the air inlet pipe 12, so as to react with the reaction liquid. The gas tank 11 can be used to store the gas, improving the continuity of gas transportation. The setting of the liquid inlet chamber 13 can facilitate the injection of external reaction liquid. The filter plate 14 on the inner wall of the liquid inlet chamber 13 can filter impurities in the liquid, thereby improving the working effect of the absorption tower.

[0024] The bottom end of the absorption chamber 1 is fixedly connected to a support column 17. There are multiple support columns 17. The bottom end of the support column 17 is fixedly connected to an installation plate. The inner wall of the absorption chamber 1 is coated with a corrosion-resistant coating. The outer surface of the absorption chamber 1 is coated with an anti-rust coating and an anti-corrosion coating.

[0025] Specifically, the multiple support columns 17 at the bottom of the absorption chamber 1 can provide support for the absorption chamber 1, ensuring its stability during operation and thus providing safety for the absorption tower. The corrosion-resistant coating on the inner wall of the absorption chamber 1 can improve its erosion resistance and thus extend its service life.

[0026] The working principle of this embodiment is as follows:

[0027] During gas processing, the connecting pipe is connected to the flange at one end of the gas outlet pipe, and the gas enters the gas tank 11 for storage. The liquid inlet bend 15 is connected to the reaction liquid storage tank, and the reaction liquid is pumped into the liquid inlet chamber 13. Under the action of the filter plate 14, the particulate impurities in the reaction liquid are filtered. The filtered liquid enters the absorption chamber 1. Then, the gas is introduced into the absorption chamber 1 by the gas inlet device 10. The drive motor 2 is started and runs. The drive motor 2 drives the drive rod 3, the hollow plate 4 and the scraper 5 to rotate. At the same time, the circulation pump 8 is started and runs. The circulation pump 8 draws the reaction liquid in the equipment chamber 7 and sends it into the water inlet ring 6 through the water inlet ring 6. It enters the drive rod 3 through the water inlet ring 6 and enters the hollow plate 4 from the drive rod 3. Under the action of continuous water pressure, the scraper 5 is pushed out, so that the outer end of the scraper 5 contacts the inner wall of the absorption chamber 1. This can promote the absorption reaction while avoiding the accumulation of impurities on the inner wall of the absorption chamber 1.

Claims

1. An acid mist absorption tower for the production of dye intermediates, comprising an absorption chamber (1), characterized in that: The absorption chamber (1) is equipped with a scraping assembly, which includes a drive motor (2) fixedly connected to the top of the absorption chamber (1). The output end of the drive motor (2) is coaxially driven by a drive rod (3) through a coupling. The drive rod (3) is hollow and its outer wall is fixedly connected to a hollow plate (4). The inner wall of the hollow plate (4) is slidably connected to a scraping plate (5). The outer surface of the scraping plate (5) is provided with a scraping groove. The scraping plate (5) is hollow and its top end is provided with a spray groove. The bottom of the outer wall of the drive rod (3) is rotatably sleeved with a water inlet ring (6). The outer surface of the absorption chamber (1) is fixedly connected to an equipment chamber (7). The bottom end of the equipment chamber (7) is fixedly connected to a circulation pump (8). The output end of the circulation pump (8) is fixedly connected to the inner wall of the water inlet ring (6) through a water pipe (9).

2. The acid mist absorption tower for dye intermediate production according to claim 1, characterized in that: An air inlet device (10) is installed on the outer wall of the absorption chamber (1). An air tank (11) is fixedly connected to the top of the air inlet device (10). The output end of the air inlet device (10) is fixedly connected to the inner bottom end of the absorption chamber (1) through an air inlet pipe (12).

3. The acid mist absorption tower for dye intermediate production according to claim 1, characterized in that: The top of the absorption chamber (1) is fixedly connected to the liquid inlet chamber (13), the inner wall of the liquid inlet chamber (13) is fitted with a filter plate (14), and the top of the liquid inlet chamber (13) is fixedly connected to the liquid inlet bend (15).

4. The acid mist absorption tower for dye intermediate production according to claim 2, characterized in that: A monitoring instrument (16) is fixedly connected to the top of the gas tank (11), and a connecting pipe is installed on the outer wall of the gas tank (11).

5. The acid mist absorption tower for dye intermediate production according to claim 4, characterized in that: The bottom end of the absorption chamber (1) is fixedly connected to a support column (17), and there are multiple support columns (17). The bottom end of the support column (17) is fixedly connected to an installation plate.

6. The acid mist absorption tower for dye intermediate production according to claim 5, characterized in that: The inner wall of the absorption chamber (1) is coated with a corrosion-resistant coating, and the outer surface of the absorption chamber (1) is coated with an anti-rust coating and an anti-corrosion coating.

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