Acid mist treatment absorber

Abstract

The utility model relates to the technical field of waste gas, in particular to an acid mist treatment absorber which comprises an absorption tank, an acid mist gas inlet is formed in the lower side outside the absorption tank, a gas outlet is formed in the top of the absorption tank, and an annular water inlet pipe is installed on the upper side inside the absorption tank. The water inlet end of the annular water inlet pipe penetrates out of the absorption tank and is used for conveying alkaline absorption liquid, a plurality of atomizing nozzles are mounted on the annular water inlet pipe, a filling layer is arranged in the middle of the absorption tank, and a sewage outlet is formed in the lower side of the outer part of the absorption tank. The pH value of sewage can be monitored in real time through the integrated pH monitor, a proper amount of alkaline solution is automatically added through the metering pump to adjust the pH value of the sewage, it is ensured that discharged sewage meets the environmental protection standard, and secondary pollution is effectively avoided.

Description

Technical Field

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

[0002] With the rapid development of industrial production, especially in heavy industries such as chemicals, electroplating, and steel, acid mist emissions have become a serious environmental pollution problem. Acid mist not only severely pollutes the atmospheric environment but may also harm human health, such as causing respiratory diseases and skin burns. In addition, acidic substances in acid mist can corrode buildings, machinery, and vegetation, further exacerbating environmental damage. Therefore, effective treatment and control of acid mist emissions are crucial for environmental protection and human health.

[0003] Traditional acid mist treatment methods mainly include wet scrubbing, dry adsorption, and biological methods. Among these, spraying alkaline solutions or other chemical agents causes the acidic gases in the acid mist to come into contact with the liquid and undergo a neutralization reaction, thereby achieving the purpose of removing acid mist. Wet scrubbing is characterized by high efficiency, simple operation, and strong adaptability, and has been widely used in industrial waste gas treatment. However, traditional wet scrubbing equipment has some shortcomings. During the treatment process, a large amount of wastewater containing high concentrations of acidic substances is generated. Traditional equipment lacks effective wastewater treatment devices, making it difficult to ensure that the pH value of the discharged wastewater remains stable within the environmental protection requirements, thus causing secondary pollution.

[0004] Therefore, there is an urgent need to provide an acid mist treatment absorber with wastewater treatment capabilities. Utility Model Content

[0005] In order to overcome the shortcomings of traditional wet scrubbing equipment, which lacks an effective wastewater treatment device, resulting in the generation of a large amount of wastewater containing high concentrations of acidic substances during the treatment of acid mist that cannot be discharged within the scope of environmental protection requirements, thus causing secondary pollution, this utility model provides an acid mist treatment absorber with wastewater treatment function.

[0006] To address the aforementioned issues, this utility model employs the following technical solution: an acid mist treatment absorber, comprising an absorption tank, an acid mist inlet on the lower outer side of the absorption tank, an outlet on the top of the absorption tank, an annular water inlet pipe installed on the upper inner side of the absorption tank, the inlet end of the annular water inlet pipe extending out of the absorption tank for conveying alkaline absorbent liquid, multiple atomizing nozzles installed on the annular water inlet pipe, a filling layer in the middle of the absorption tank, a wastewater outlet on the lower outer side of the absorption tank, a Z-shaped bracket fixedly connected to the lower outer side of the absorption tank, a pH monitor installed on the Z-shaped bracket, the electrodes of the pH monitor extending into the wastewater outlet to monitor the pH value of the wastewater, a storage cylinder located in the middle of the outer side of the absorption tank, a support frame fixedly connected to the lower outer side of the absorption tank, a metering pump installed on the support frame, the metering pump electrically connected to the pH monitor, the output end of the metering pump connected to the absorption tank, and the input end connected to the storage cylinder.

[0007] Optionally, the top of the storage cylinder is equipped with a sealing cap.

[0008] Optionally, a servo motor is fixedly mounted on the top of the absorption tank via a mounting base. The output shaft of the servo motor rotates through the top of the absorption tank to extend into the tank body, and a first stirring frame is also provided thereon. The first stirring frame is located between the filling layer and the annular water inlet pipe.

[0009] Optionally, a second stirring frame is connected to the first stirring frame via a connecting rod, and a scraper is provided at the bottom of the second stirring frame.

[0010] Optionally, an observation window is embedded in the storage cylinder.

[0011] Optionally, the bottom of the storage cylinder adopts a conical structure design.

[0012] Compared with the prior art, the present invention has the following technical effects: 1. The integrated pH monitor can monitor the acidity and alkalinity of sewage in real time, and the metering pump can automatically add an appropriate amount of alkaline solution to adjust the pH value of sewage, ensuring that the discharged sewage meets environmental protection standards and effectively avoiding secondary pollution.

[0013] 2. By using a servo motor to drive the first stirring frame to rotate, the alkaline absorbent sprayed by the atomizing nozzle is more evenly distributed on the surface of the packing layer, increasing the contact area and contact time between the gas and liquid phases. At the same time, it helps to divide the waste gas into fine airflows that fully contact the liquid film on the surface of the packing, thereby enhancing the mass transfer process and ensuring that the washing liquid and waste gas can be mixed more thoroughly, thus improving the purification efficiency.

[0014] 3. By adding a second stirring rack to the first stirring rack, the second stirring rack rotates synchronously with the first stirring rack to stir the sewage inside the absorption tank, so that the sewage can be evenly mixed with the alkaline solution added after adjusting the pH value, thus ensuring the sewage treatment effect. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 This is a three-dimensional sectional view of the present invention.

[0017] Figure 3 This is a three-dimensional sectional view of the metering pump, storage cylinder, and sealing cap of this utility model.

[0018] Figure 4 This is a three-dimensional cross-sectional view of the servo motor, the first stirring frame, and the second stirring frame of this utility model.

[0019] The following are the labels in the diagram: 1. Absorption tank, 2. Annular water inlet pipe, 3. Acid mist inlet, 4. Wastewater outlet, 5. Atomizing nozzle, 6. Filling layer, 7. Air outlet, 8. Z-shaped bracket, 9. pH monitor, 10. Support frame, 11. Metering pump, 12. Storage cylinder, 13. Sealing cover, 14. Mounting base, 15. Servo motor, 16. First stirring frame, 17. Connecting rod, 18. Second stirring frame, 19. Scraper, 20. Observation window, 21. Conical structure. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example 1: Please refer to Figures 1-3An acid mist treatment absorber includes an absorption tank 1. An acid mist inlet 3 is located on the lower outer side of the absorption tank 1, and an outlet 7 is located on the top of the absorption tank 1 to allow the acid mist to flow upwards. An annular water inlet pipe 2 is installed on the upper inner side of the absorption tank 1, with its inlet end extending out of the absorption tank 1 to transport alkaline absorbent. Multiple atomizing nozzles 5 are installed on the annular water inlet pipe 2. A filling layer 6, composed of multifaceted hollow spheres, is located in the middle of the absorption tank 1 to increase the gas-liquid contact area and reaction time. A wastewater outlet 4 is located on the lower outer side of the absorption tank 1. A Z-shaped bracket 8 is fixedly connected to the lower outer side of the absorption tank 1, and a pH monitor 9 is installed on the Z-shaped bracket 8. The electrodes of the pH monitor 9 extend into the wastewater outlet 4 to monitor the pH value of the wastewater. The middle of the outer side of the absorption tank 1... A storage cylinder 12 for storing alkaline solution is provided. The bottom of the storage cylinder 12 is designed with a conical structure 21, which helps to completely drain the solution and avoid waste or impact on subsequent use due to residue. The top of the storage cylinder 12 is equipped with a sealing cap 13 to seal the storage cylinder 12, so as to ensure that the substance inside the storage cylinder 12 is not easily contaminated by the outside and to reduce the release of volatile substances. An observation window 20 is embedded in the storage cylinder 12. The design of the observation window 20 allows the operator to monitor the liquid level and state of the solution in the storage cylinder 12 at any time. A support frame 10 is fixed to the lower side of the outside of the absorption tank 1. A metering pump 11 is installed on the support frame 10. The metering pump 11 is electrically connected to a pH monitor 9. The output end of the metering pump 11 is connected to the absorption tank 1, and the input end is connected to the storage cylinder 12.

[0022] During the operation of the absorption tank 1, the acid mist gas first enters the tank from the acid mist inlet 3. The acid mist gas reaches the filling layer 6 and reacts with the alkaline absorption liquid sprayed from the atomizing nozzle 5. The design of the filling layer allows the gas and liquid to fully contact on the surface of the filling layer, increasing the gas-liquid contact area and prolonging the contact time. During this process, the acidic and alkaline substances react to generate salt and water, thereby reducing the acidity of the waste gas. After sufficient reaction, the pH value of the acid mist gradually increases, eventually reaching a neutral to slightly alkaline state, completing the purification. The purified gas is discharged through the outlet 7, while the wastewater that has undergone the reaction is collected at the bottom of the absorption tank 1 and discharged through the wastewater outlet 4. During the wastewater discharge process, the pH monitor 9 monitors the pH value of the wastewater in real time. Once the pH value of the wastewater deviates from the set range, the pH monitor 9 will send a signal to the metering pump 11, triggering it to draw an appropriate amount of adjusting solution from the storage cylinder 12 and inject it into the absorption tank 1 to adjust the pH value of the wastewater to a suitable level, ensuring that the discharged wastewater meets environmental protection standards and effectively avoiding secondary pollution.

[0023] Example 2: Based on Example 1, please refer to... Figure 4A servo motor 15 is fixedly mounted on the top of the absorption tank 1 via a mounting base 14. The output shaft of the servo motor 15 rotates through the top of the absorption tank 1 to extend into the tank body, and a first stirring rack 16 is also provided on it. The first stirring rack 16 is located between the filling layer 6 and the annular water inlet pipe 2.

[0024] Please see Figure 4 The first stirring rack 16 is connected to the second stirring rack 18 via a connecting rod 17, and the bottom of the second stirring rack 18 is provided with a scraper 19.

[0025] During the acid mist treatment process, the servo motor 15 is started, and its output shaft drives the first stirring frame 16 to rotate. Through the rotation of the first stirring frame 16, the alkaline absorbent sprayed by the atomizing nozzle 5 can be more evenly distributed on the surface of the packing layer, thereby increasing the contact area and contact time of the gas and liquid phases. This allows the exhaust gas to be divided into many fine airflows when passing through the packing layer, further contacting the liquid film on the packing surface, enhancing the mass transfer process, helping the washing liquid and exhaust gas to mix fully, ensuring that the gas and liquid phases are evenly distributed in the packing layer, and thus improving the purification efficiency. At the same time, through the action of the connecting rod 17, the second stirring frame 18 rotates synchronously with the first stirring frame 16. The second stirring frame 18 stirs the sewage inside the absorption tank 1, so that the sewage can be evenly mixed with the alkaline solution added later according to the pH value adjustment, ensuring the sewage treatment effect. In addition, the design of the scraper 19 helps to remove the sediment or impurities attached to the inner wall of the absorption tank 1, preventing them from accumulating and affecting the performance of the equipment.

[0026] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. An acid mist treatment absorber, comprising an absorption tank (1), wherein an acid mist inlet (3) is provided on the lower outer side of the absorption tank (1), an outlet (7) is provided on the top of the absorption tank (1), an annular water inlet pipe (2) is installed on the upper inner side of the absorption tank (1), the inlet end of the annular water inlet pipe (2) extends out of the absorption tank (1) for conveying alkaline absorbent, a plurality of atomizing nozzles (5) are installed on the annular water inlet pipe (2), a filling layer (6) is provided in the middle of the absorption tank (1), and a wastewater outlet (4) is provided on the lower outer side of the absorption tank (1), characterized in that, A Z-shaped bracket (8) is fixedly attached to the lower side of the outside of the absorption tank (1). A pH monitor (9) is installed on the Z-shaped bracket (8). The electrode of the pH monitor (9) extends into the sewage outlet (4) to monitor the pH value of the sewage. A storage cylinder (12) is set in the middle position outside the absorption tank (1). A support frame (10) is fixedly attached to the lower side of the outside of the absorption tank (1). A metering pump (11) is installed on the support frame (10). The metering pump (11) is electrically connected to the pH monitor (9). The output end of the metering pump (11) is connected to the absorption tank (1), and the input end is connected to the storage cylinder (12).

2. An acid mist treatment absorber according to claim 1, characterized in that, The top of the storage cylinder (12) is equipped with a sealing cap (13).

3. An acid mist treatment absorber according to claim 2, characterized in that, A servo motor (15) is fixedly mounted on the top of the absorption tank (1) via a mounting base (14). The output shaft of the servo motor (15) rotates through the top of the absorption tank (1) to extend into the tank body, and a first stirring rack (16) is also provided on it. The first stirring rack (16) is located between the filling layer (6) and the annular water inlet pipe (2).

4. An acid mist treatment absorber according to claim 3, characterized in that, The first stirring rack (16) is connected to the second stirring rack (18) by a connecting rod (17), and the bottom of the second stirring rack (18) is provided with a scraper (19).

5. An acid mist treatment absorber according to claim 4, characterized in that, An observation window (20) is embedded in the storage cylinder (12).

6. An acid mist treatment absorber according to claim 5, characterized in that, The bottom of the storage cylinder (12) adopts a conical structure (21) design.

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