An ammonia off-gas purification apparatus

Abstract

This utility model discloses an ammonia waste gas purification device, including a main body, an absorption mechanism, a dehydration mechanism, and a treatment mechanism. The absorption mechanism includes an air inlet pipe and a barrier plate, the dehydration mechanism includes a flow guide and a mounting frame, and the treatment mechanism includes a reflux component and a control valve. With the cooperation of the above mechanisms, this device utilizes the strong affinity of water for ammonia, enabling an ammonia absorption efficiency of over 90%. Furthermore, the spray system has a simple structure, low operation and maintenance costs, and is suitable for continuous operation scenarios. In addition, this device removes water mist particles, avoiding "white smoke" pollution, and prevents water droplets in the exhaust gas from carrying unabsorbed ammonia for secondary emission, thereby protecting downstream equipment (such as activated carbon towers, fans, etc.) from corrosion or blockage.

Description

Technical Field

[0001] This utility model relates to the field of ammonia waste gas treatment technology, specifically to an ammonia waste gas purification device. Background Technology

[0002] Ammonia waste gas purification equipment is a device specifically designed to treat ammonia (NH3) waste gas. Its purpose is to reduce ammonia emissions and meet environmental protection standards. Ammonia waste gas usually originates from the production processes of industries such as chemical, metallurgical, and agricultural industries, such as fertilizer manufacturing and wastewater treatment.

[0003] First, if ammonia cannot be initially removed during purification, the burden of subsequent treatment will increase, and the high concentration of ammonia in the emitted gas will easily exceed the standard, causing environmental pollution and odor nuisance.

[0004] Secondly, if the equipment does not have a dehydration function after water spraying, the airflow will carry a large number of mist droplets, forming obvious "white smoke" visual pollution, and there is a potential risk of secondary ammonia release.

[0005] Finally, if the process of changing the dehydration material is cumbersome and time-consuming, it will affect production. Furthermore, if the adsorbent material cannot be replaced in time after it becomes saturated, it will cause dehydration failure and excessive moisture in the system. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] In view of the shortcomings of the prior art, this utility model provides an ammonia waste gas purification device to solve the technical problems mentioned in the background art.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, this utility model provides the following technical solution: an ammonia waste gas purification device, comprising a main body, an absorption mechanism, a dehydration mechanism, and a treatment mechanism. The absorption mechanism includes an inlet pipe and a barrier plate. The inlet pipe is fixedly installed on the main body and fixedly connected to the barrier plate. A water pump is installed on the main body, and a spray element is fixedly installed at one end of the water pump. The spray element is provided with nozzles, which are distributed in a linear array on the spray element. The dehydration mechanism includes a guide frame and a mounting frame. The guide frame is fixedly installed on the main body, and the mounting frame is installed on the guide frame and connected to it. A sealing gasket is installed on the guide frame, and the dehydration element is fixedly installed on the mounting frame.

[0010] Preferably, the processing mechanism includes a reflux component and a control valve. The reflux component is fixedly installed at the bottom of the main body, and the control valve is fixedly installed on the reflux component, which facilitates the storage and discharge of ammonia water that has absorbed ammonia gas.

[0011] In a further preferred embodiment, the air inlet pipe is provided with air dispersing holes, which are distributed in a circumferential array on the air inlet pipe, and the bottom of the main body is provided with a collection chamber, and the reflux component is fixedly installed at the bottom of the collection chamber to facilitate the collection and export of ammonia water.

[0012] In a further preferred embodiment, the flow guide frame is provided with a contact element and a mounting box, and the mounting frame is installed in the mounting box and connected to the mounting box to facilitate timely replacement of the dehydration element.

[0013] In a further preferred embodiment, the mounting box is provided with a locking hole, and the mounting frame is provided with a locking rod. The locking rod is slidably connected to the mounting box and engages with the locking hole, respectively, to facilitate the rapid installation of the mounting frame.

[0014] In a further preferred embodiment, a spring is provided on the lever, a protective cover is installed on the mounting box, one end of the spring is fixedly connected to the mounting frame, and the protective cover is connected to the mounting box to facilitate fixing the position of the mounting frame.

[0015] In a further preferred embodiment, the lever is provided with a toggle hole, and the protective cover is provided with a rubber ring, which is connected to the mounting box to facilitate protection of the mounting frame.

[0016] In a further preferred embodiment, the guide member is provided with an outer pipe and a mating groove, and the rubber ring is mated and connected with the mating groove to facilitate subsequent treatment of the exhaust gas.

[0017] (III) Beneficial Effects

[0018] Compared with the prior art, this utility model provides an ammonia waste gas purification device, which has the following beneficial effects:

[0019] In this invention, by setting up an absorption mechanism, and with the cooperation of components such as the air inlet pipe and the barrier plate, the device utilizes the strong affinity of water for ammonia, achieving an absorption efficiency of over 90% for ammonia. Furthermore, the spray system has a simple structure, low operation and maintenance costs, and is suitable for continuous operation scenarios.

[0020] In this invention, by setting up a dehydration mechanism, the device removes water mist particles through the cooperation of components such as the flow guide and the mounting frame, avoiding "white smoke" pollution and preventing water droplets in the exhaust gas from carrying unabsorbed ammonia gas for secondary emission, thereby protecting downstream equipment (such as activated carbon towers, fans, etc.) from corrosion or blockage.

[0021] By incorporating a locking rod, a spring, and a protective cover, this invention significantly reduces downtime, improves continuous operation efficiency, facilitates cleaning and maintenance, extends equipment lifespan, and allows for rapid switching between different materials (such as silicone, activated alumina, etc.) to adapt to varying working conditions. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of an ammonia waste gas purification device according to the present invention;

[0023] Figure 2 This is a cross-sectional view of the internal structure of the main body in this utility model;

[0024] Figure 3 This is an exploded view of the overall structure of this utility model;

[0025] Figure 4 This is a schematic diagram of the internal structure of the guide frame in this utility model;

[0026] Figure 5 This is an exploded view of the dehydration mechanism in this utility model.

[0027] In the diagram: 1. Main body; 2. Air inlet pipe; 3. Barrier plate; 4. Water pump; 5. Sprayer component; 6. Nozzle; 7. Flow guide frame; 8. Mounting frame; 9. Sealing gasket; 10. Dehydration component; 11. Return component; 12. Control valve; 13. Air diffuser; 14. Collection chamber; 15. Contact component; 16. Mounting box; 17. Locking hole; 18. Locking rod; 19. Spring; 20. Protective cover; 21. Actuating hole; 22. Rubber ring; 23. External pipe; 24. Mating groove. Detailed Implementation

[0028] 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.

[0029] Example 1:

[0030] Please see Figures 1-5A type of ammonia waste gas purification device includes a main body 1, an absorption mechanism, a dehydration mechanism, and a treatment mechanism. The absorption mechanism includes an air inlet pipe 2 and a barrier plate 3. The air inlet pipe 2 is fixedly installed on the main body 1 and fixedly connected to the barrier plate 3. A water pump 4 is installed on the main body 1. A spray element 5 is fixedly installed at one end of the water pump 4. The spray element 5 is provided with nozzles 6, which are distributed in a linear array on the spray element 5. The dehydration mechanism includes a flow guide frame 7 and a mounting frame 8. The flow guide frame 7 is fixedly installed on the main body 1. The mounting frame 8 is installed on the flow guide frame 7 and is connected to the flow guide frame 7. A sealing gasket 9 is installed on the flow guide frame 7. A dehydration element 10 is fixedly installed on the mounting frame 8.

[0031] In this embodiment, the absorption mechanism includes an air inlet pipe 2 and a barrier plate 3. During use, the exhaust gas enters the interior of the main body 1 through the air inlet pipe 2 and, under the action of the air diffuser 13 of the air inlet pipe 2 and the barrier plate 3, can be evenly collected on the contact member 15 at the top of the main body 1. At this time, the water pump 4 operates and sprays water directly into the spray member 5, and the water is sprayed out into the nozzle 6, so that the water combines with the ammonia gas to form ammonia water, and the ammonia water falls into the collection chamber 14 at the bottom of the main body 1. At the same time, the return member 11 at the bottom of the collection chamber 14 begins to absorb the ammonia water, and after the control valve 12 is opened, the ammonia water is discharged, completing the ammonia water treatment.

[0032] In this embodiment, the dehydration mechanism includes a guide frame 7 and a mounting frame 8. During use, one end of the guide frame 7 can be connected to a booster pump on the pickling tower, allowing the contact element 15 to generate negative pressure to absorb the moisture-laden waste gas inside the main body 1 after the ammonia has been absorbed by the water flow. Under the action of the contact element 15, the waste gas directly enters the mounting box 16, where activated alumina or other dehydrating substances dehydrate the waste gas. Finally, it is discharged into the external pipe 23, allowing the waste gas in the external pipe 23 to be discharged into the pickling tower. After a period of use, the dehydration element 10... If replacement or regeneration is required, the protective cover 20 installed on the mounting box 16 can be removed from the mounting box 16. At this time, the rubber ring 22 can be disengaged from the mating groove 24, and the protective cover 20 can also be disengaged from the mounting box 16. Pull the actuation hole 21 on the locking rod 18 directly, so that the locking rod 18 can slide on the mounting frame 8 and squeeze the spring 19. During this process, the locking rod 18 disengages from the locking hole 17, thereby removing the mounting frame 8 from the mounting box 16. Then, the dehydration component 10 fixedly installed on the mounting frame 8 can be regenerated. Then, it can be installed in the above manner, and the mounting frame 8 and the sealing gasket 9 are connected.

[0033] Example 2:

[0034] In summary, during use, the ammonia gas undergoes preliminary dust treatment before being discharged into the device. The exhaust gas then enters the main body 1 through the inlet pipe 2 and, under the action of the diffuser 13 and barrier plate 3, evenly accumulates at the contact element 15 at the top of the main body 1. At this time, the water pump 4 operates, directly spraying water through the spray element 5 and then through the nozzle 6, allowing the water to combine with the ammonia gas to form ammonia water. This ammonia water falls into the collection chamber 14 at the bottom of the main body 1. Simultaneously, the return element 11 at the bottom of the collection chamber 14 begins to absorb the ammonia water. After the control valve 12 is opened, the ammonia water is discharged, completing the ammonia water treatment. At this point, one end of the guide frame 7 can be connected to the booster pump on the acid washing tower, allowing the contact element 15 to generate negative pressure to absorb the moisture-laden exhaust gas inside the main body 1 that has undergone ammonia absorption by the water flow. Under the action of contact element 15, the gas directly enters the installation box 16, where the activated alumina or other dehydrating substances dehydrate the gas. Finally, the gas is discharged into the external pipe 23, allowing the gas to be discharged into the pickling tower. After a period of use, the dehydrating component 10 needs to be replaced or regenerated. At this time, the protective cover 20 installed on the installation box 16 can be removed. The rubber ring 22 can then be removed from the mating groove 24, and the protective cover 20 can also be removed from the installation box 16. The lever 18 can be pulled to move the lever 18 through the actuation hole 21, allowing the lever 18 to slide on the mounting frame 8 and compress the spring 19. During this process, the lever 18 disengages from the locking hole 17, allowing the mounting frame 8 to be removed from the installation box 16. The dehydrating component 10 fixedly installed on the mounting frame 8 can then be regenerated. The component is then installed in the manner described above, and the mounting frame 8 is connected to the sealing gasket 9.

[0035] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. An ammonia waste gas purification device, comprising a main body (1), an absorption mechanism, a dehydration mechanism, and a treatment mechanism, characterized in that, The absorption mechanism includes an air inlet pipe (2) and a barrier plate (3). The air inlet pipe (2) is fixedly installed on the main body (1) and fixedly connected to the barrier plate (3). A water pump (4) is installed on the main body (1). A spray component (5) is fixedly installed at one end of the water pump (4). A nozzle (6) is provided on the spray component (5). The nozzles (6) are distributed in a linear array on the spray component (5). The dehydration mechanism includes a flow guide frame (7) and a mounting frame (8). The flow guide frame (7) is fixedly installed on the main body (1). The mounting frame (8) is installed on the flow guide frame (7) and is connected to the flow guide frame (7). A sealing gasket (9) is installed on the flow guide frame (7). A dehydration component (10) is fixedly installed on the mounting frame (8).

2. The ammonia waste gas purification equipment according to claim 1, characterized in that: The processing mechanism includes a reflux component (11) and a control valve (12). The reflux component (11) is fixedly installed at the bottom of the main body (1), and the control valve (12) is fixedly installed on the reflux component (11).

3. The ammonia waste gas purification equipment according to claim 2, characterized in that: The air intake pipe (2) is provided with air dispersing holes (13), which are arranged in a circular array on the air intake pipe (2). The bottom of the main body (1) is provided with a collection chamber (14), and the return component (11) is fixedly installed at the bottom of the collection chamber (14).

4. The ammonia waste gas purification equipment according to claim 1, characterized in that: The flow guide (7) is provided with a contact (15) and a mounting box (16). The mounting bracket (8) is installed in the mounting box (16) and is connected to the mounting box (16).

5. The ammonia waste gas purification equipment according to claim 4, characterized in that: The mounting box (16) is provided with a locking hole (17), and the mounting bracket (8) is provided with a locking rod (18). The locking rod (18) is slidably connected to the mounting box (16) and cooperates with the locking hole (17).

6. The ammonia waste gas purification equipment according to claim 5, characterized in that: A spring (19) is provided on the lever (18), and a protective cover (20) is installed on the mounting box (16). One end of the spring (19) is fixedly connected to the mounting bracket (8), and the protective cover (20) is connected to the mounting box (16).

7. The ammonia waste gas purification equipment according to claim 6, characterized in that: The lever (18) is provided with a toggle hole (21), and the protective cover (20) is provided with a rubber ring (22). The rubber ring (22) is connected to the mounting box (16).

8. The ammonia waste gas purification equipment according to claim 7, characterized in that: The guide frame (7) is provided with an outer pipe (23) and a mating groove (24), and the rubber ring (22) is connected to the mating groove (24).

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