A spray dust removal tower

Abstract

This utility model discloses a spray dust removal tower, including a tower body with an air inlet and an exhaust outlet, and a demister disposed within the tower body for trapping water mist entrained in the gas. The tower body is provided with an air duct partition dividing the tower body into a first air duct and a second air duct. The air inlet is located in the first air duct, and the exhaust outlet and demister are located in the second air duct. A first nozzle is provided in the first air duct for spraying atomized water droplets to capture dust in the gas, and a second nozzle is provided in the second air duct for spraying settling droplets to reduce the amount of water mist entrained in the gas and sent to the demister. This utility model can ensure dust collection efficiency through high-intensity spraying in the first air duct, and significantly reduce the separation load on the demister through settling droplets in the second air duct, thereby reducing the overall system flow resistance, alleviating the risk of demister clogging, and achieving a balance between high-efficiency dust removal and low-resistance stable operation.

Description

Technical Field

[0001] This utility model belongs to the field of purification equipment, and in particular relates to a dust removal tower. Background Technology

[0002] Currently, large quantities of dust-laden gases are frequently generated during production processes in industries such as chemical and metallurgy. To meet environmental emission standards, protect downstream equipment, or recover valuable materials, these gases must be efficiently purified. Against this backdrop, wet scrubbers are widely used in industrial gas dust removal due to their reliable structure, wide applicability, and ability to simultaneously handle high-temperature and harmful gases.

[0003] Among them, spray dust collection towers are common wet dust collection devices. They typically employ an empty tower spray structure, atomizing liquid through a spray system so that the droplets fully contact the rising dust-laden gas to capture dust particles, which are then separated into gas and liquid by a demister. This structure is compact, handles a large volume of gas, and is relatively simple to operate, making it the preferred choice for many factories.

[0004] However, traditional spray dust collection towers have also revealed some problems in long-term operation: when the spray intensity is increased in pursuit of high dust collection efficiency, it is easy to cause the demister to be overloaded, the system flow resistance loss is large, the demister channel is easy to be blocked, and the continuous operation is affected. Therefore, there is an urgent need for a spray dust collection tower that can ensure dust collection efficiency while having a small demister load and low flow resistance loss. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the deficiencies and defects mentioned in the background art above, and to provide a spray dust removal tower that ensures dust removal efficiency while having a small demister load and low flow resistance loss.

[0006] To solve the above-mentioned technical problems, the technical solution proposed by this utility model is as follows: A spray dust removal tower includes a tower body with an air inlet and an exhaust outlet, and a demister disposed within the tower body for trapping water mist entrained in the gas. The tower body is provided with an air duct partition for dividing the tower body into a first air duct and a second air duct that are connected. The air inlet is disposed in the first air duct, and the exhaust outlet and the demister are disposed in the second air duct. The first air duct is provided with a first nozzle for spraying atomized water droplets to capture dust in the gas, and the second air duct is provided with a second nozzle for spraying settling liquid droplets to reduce the amount of water mist entrained in the gas to the demister.

[0007] In the aforementioned spray dust removal tower, preferably, the air duct baffle is vertically installed inside the tower body, with a gas flow port at the lower end of the air duct baffle. The air inlet is located at the upper end of the first air duct, the exhaust port is located at the upper end of the second air duct, and the demister is located near the exhaust port. With this configuration, gas first enters the first air duct from the upper air inlet, flows downwards, and then flows upwards through the second air duct to the upper exhaust port, forming a long U-shaped path that flows downwards and then upwards.

[0008] In the aforementioned spray dust removal tower, preferably, the first nozzle is located on the side of the first air duct away from the air inlet, and its spray direction is towards the air inlet. By making the spray direction of the first nozzle opposite to the gas flow direction, a maximized reverse contact path and time are formed, providing sufficient conditions for dust capture.

[0009] In the aforementioned spray dust removal tower, preferably, the second nozzle is located on the side of the second air duct away from the exhaust port, and its spray direction is towards the exhaust port. By aligning the spray direction of the first nozzle with the gas flow direction, the sprayed droplets come into contact with the airflow in the same direction, which can reduce entrainment, lower the load on the demister, thereby reducing flow resistance loss and ensuring exhaust volume.

[0010] In the aforementioned spray dust removal tower, preferably, the orifice diameter of the first nozzle is set in the range of 0.2-0.5 mm. By using a small orifice diameter for the first nozzle, fine mist droplets can be sprayed, increasing the contact area with dust and thus improving dust collection efficiency.

[0011] In the aforementioned spray dust removal tower, preferably, the orifice diameter of the second nozzle is set in the range of 0.6-1.2 mm. By using a larger orifice diameter for the second nozzle, sedimentary droplets can be effectively formed, carrying away fine water mist entrained in the gas, thereby reducing the load on the demister and lowering the system flow resistance.

[0012] In the aforementioned spray dust removal tower, preferably, a water pool is provided at the bottom of the tower body, and a spray pool communicating with the water pool is provided on the outer side of the tower body. A filter screen is provided at the connection between the water pool and the spray pool. With this arrangement, the dust-laden wastewater undergoes initial sedimentation in the water pool at the bottom of the tower, while the outer spray pool contains relatively clean circulating water that has undergone initial sedimentation. The filter screen effectively intercepts larger particles that have not been settled, preventing them from entering the spray pool.

[0013] In the aforementioned spray dust removal tower, preferably, the spray tank is equipped with an adjustable-flow water pump for supplying water to the first and second spray nozzles. The adjustable-flow water pump is connected to the first and second spray nozzles via spray pipes. The adjustable-flow water pump not only provides power to the first and second spray nozzles, but its adjustable characteristics also allow operators to precisely control the spray intensity according to actual working conditions, thereby optimizing dust removal efficiency while actively managing the demister load and system resistance.

[0014] In the aforementioned spray dust removal tower, preferably, the diameter of the spray pipe is 6-15mm. This configuration can maintain a high water flow velocity under the drive of an adjustable flow water pump, while ensuring that the first and second nozzles receive sufficient spray pressure.

[0015] In the aforementioned spray dust removal tower, preferably, the demister is a corrugated plate demister. The tortuous flow channel inside the corrugated plate demister can efficiently change the airflow direction, and use inertia to impact the entrained droplets against the plate wall and collect and discharge them, resulting in high demisting efficiency.

[0016] Compared with the prior art, the advantages of this utility model are: This invention divides the tower's internal space into a first air duct and a second air duct by setting up an air duct baffle. A second nozzle is added in the second air duct to spray settling droplets, allowing the gas to undergo a droplet settling pretreatment before entering the demister, effectively reducing the concentration of fine mist entrained in the gas. This design ensures efficient dust collection through high-intensity spraying in the first air duct, while significantly reducing the separation load on the demister through settling droplets in the second air duct. This overall reduces system flow resistance, alleviates the risk of demister clogging, and achieves a balance between high-efficiency dust removal and low-resistance stable operation, improving the continuity and economy of the equipment's operation. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of the spray dust removal tower in an embodiment. Figure 2 A top view of the spray dust removal tower in this embodiment; Figure 3 This is a schematic diagram of the structure of the filter screen plate in an embodiment.

[0019] Legend 1. Tower body; 11. Air inlet; 12. Exhaust outlet; 2. Demister; 3. Air duct baffle; 31. First air duct; 32. Second air duct; 33. Gas flow port; 4. First nozzle; 5. Second nozzle; 6. Water tank; 7. Spray tank; 8. Filter screen; 9. Adjustable flow water pump; 91. Spray pipe. Detailed Implementation

[0020] To facilitate understanding of this utility model, it will be described more comprehensively and in detail below with reference to the accompanying drawings and preferred embodiments. However, the scope of protection of this utility model is not limited to the following specific embodiments.

[0021] It should be noted that when a component is described as being "fixed to, attached to, connected to or connected to" another component, it can be directly fixed to, attached to, connected to or connected to the other component, or it can be indirectly fixed to, attached to, connected to or connected to the other component through other intermediate connectors.

[0022] Unless otherwise defined, all technical terms used herein have the same meaning as commonly understood by those skilled in the art. The technical terms used herein are for the purpose of describing particular embodiments only and are not intended to limit the scope of protection of this invention.

[0023] Unless otherwise specified, all raw materials, reagents, instruments and equipment used in this invention can be purchased from the market or prepared by existing methods.

[0024] Example: like Figures 1 to 3 As shown, the spray dust removal tower of this embodiment includes a tower body 1 with an air inlet 11 and an exhaust outlet 12, and a demister 2 disposed in the tower body 1 for intercepting water mist entrained in the gas. The tower body 1 is provided with an air duct partition 3 for dividing the tower body 1 into a first air duct 31 and a second air duct 32. The air inlet 11 is disposed in the first air duct 31, and the exhaust outlet 12 and the demister 2 are disposed in the second air duct 32. The first air duct 31 is provided with a first nozzle 4 for spraying atomized water droplets to capture dust in the gas, and the second air duct 32 is provided with a second nozzle 5 for spraying settling liquid droplets to reduce the amount of water mist entrained in the gas to the demister 2.

[0025] In this embodiment, the air duct baffle 3 is vertically installed inside the tower body 1. The lower end of the air duct baffle 3 has a gas flow port 33. The air inlet 11 is located at the upper end of the first air duct 31, the exhaust port 12 is located at the upper end of the second air duct 32, and the demister 2 is located near the exhaust port 12.

[0026] In this embodiment, the first nozzle 4 is located in the first air passage 31 on the side away from the air inlet 11, and its spray direction is towards the air inlet 11.

[0027] In this embodiment, the second nozzle 5 is located in the second air passage 32 on the side away from the exhaust port 12, and its spray direction is towards the exhaust port 12.

[0028] In this embodiment, the orifice diameter of the first nozzle 4 is 0.2 mm.

[0029] In this embodiment, the orifice diameter of the second nozzle 5 is 0.6 mm.

[0030] In this embodiment, a water tank 6 is provided at the bottom of the tower body 1, and a spray tank 7 connected to the water tank 6 is provided on the outside of the tower body 1. A filter screen plate 8 is provided at the connection between the water tank 6 and the spray tank 7.

[0031] In this embodiment, the spray tank 7 is equipped with an adjustable water supply pump 9 for supplying water to the first spray head 4 and the second spray head 5. The adjustable water supply pump 9 is connected to the first spray head 4 and the second spray head 5 through the spray pipe 91.

[0032] In this embodiment, the diameter of the spray pipe 91 is 6mm.

[0033] In this embodiment, the head of the adjustable water pump 9 is 30-40m, and the spray flow rate ranges from 8-12m. 3 / h; Spray flow rate is calculated based on the cross-sectional area of ​​the air duct corresponding to the spray head, with 10m³ / m² as the unit. 3 / h performs the calculation.

[0034] In this embodiment, the demister 2 is a corrugated plate demister.

[0035] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A spray dedusting tower, comprising a tower body (1) provided with an air inlet (11) and an air outlet (12), and a mist eliminator (2) arranged in the tower body (1) for intercepting water mist entrained by gas, characterized in that, The tower body (1) is provided with an air duct partition (3) for dividing the tower body (1) into a first air duct (31) and a second air duct (32) that are connected. The air inlet (11) is located in the first air duct (31), and the exhaust port (12) and the demister (2) are located in the second air duct (32). The first air duct (31) is provided with a first nozzle (4) for spraying atomized water droplets to capture dust in the gas. The second air duct (32) is provided with a second nozzle (5) for spraying settling liquid droplets to reduce the amount of water mist carried by the gas to the demister (2).

2. The spray deduster tower according to claim 1, characterized in that The air duct baffle (3) is vertically installed inside the tower body (1). The lower end of the air duct baffle (3) has a gas flow port (33). The air inlet (11) is located at the upper end of the first air duct (31). The exhaust port (12) is located at the upper end of the second air duct (32). The demister (2) is located near the exhaust port (12).

3. The spray deduster tower according to claim 2, characterized in that The first nozzle (4) is located in the first air passage (31) on the side away from the air inlet (11), and its spray direction is towards the air inlet (11).

4. The spray deduster tower according to claim 2, characterized in that The second nozzle (5) is located in the second air passage (32) on the side away from the exhaust port (12), and its spray direction is towards the exhaust port (12).

5. The spray deduster tower according to claim 1, characterized in that, The aperture of the first nozzle (4) is set in the range of 0.2-0.5mm.

6. The spray deduster tower according to claim 1, characterized in that The aperture setting range of the second nozzle (5) is 0.6-1.2mm.

7. A spray dedusting tower according to any one of claims 1-6, characterized in that The bottom of the tower body (1) is provided with a water pool (6), and the outside of the tower body (1) is provided with a spray pool (7) connected to the water pool (6). A filter screen plate (8) is provided at the connection between the water pool (6) and the spray pool (7).

8. A spray deduster tower according to claim 7, characterised in that The spray tank (7) is equipped with an adjustable water supply pump (9) for supplying water to the first nozzle (4) and the second nozzle (5). The adjustable water supply pump (9) is connected to the first nozzle (4) and the second nozzle (5) through the spray pipe (91).

9. A spray deduster tower according to claim 8, characterised in that The diameter of the spray pipe (91) is 6-15mm.

10. A spray dedusting tower according to any one of claims 1-6, characterized in that The demister (2) is a corrugated plate demister.

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