A hydrogen fluoride recovery apparatus

Abstract

The utility model relates to the field of chemical industry discloses a hydrogen fluoride recovery device, including base, the base top fixedly connected with the pretreatment box, the base fixedly connected with the support seat, the base fixedly connected with the washing seat, the support seat fixedly connected with the absorption tower, the absorption tower fixedly connected with the motor, the drive end fixedly connected with the mixing column of motor, the mixing column fixedly connected with the main gear, the absorption tower fixedly connected with the external gear, the external gear and main gear meshed connection two pinions, the pinion inside is inserted with the mixing paddle and is connected, the bottom side fixedly connected with the output pipe of absorption tower. In the utility model, the motor above the absorption tower drives the mixing column to make the main gear and two pinions and the external gear mutually engage, two pinions drive the lower mixing pulp to stir, thereby ensuring that the absorbent concentration, temperature and the like parameters are uniform, avoid local supersaturation crystallization or reaction insufficient.

Description

Technical Field

[0001] This utility model relates to the chemical industry and discloses a hydrogen fluoride recovery device. Background Technology

[0002] In the chemical industry, hydrogen fluoride is an important chemical raw material. During the production process, a large amount of hydrogen fluoride gas is often generated. If it is directly emitted, it will not only waste resources, but also cause serious harm to the environment and human health. Therefore, the recycling and utilization of hydrogen fluoride is of great significance.

[0003] The traditional hydrogen fluoride recovery devices currently in use have inadequate stirring device design, which fails to achieve sufficient stirring of the absorbent, resulting in uneven distribution of the absorbent within the absorption tower and thus reducing the hydrogen fluoride recovery efficiency.

[0004] The traditional hydrogen fluoride recovery devices currently in use have pretreatment tanks with simple filter plates that have poor filtration efficiency and are difficult to clean and replace, resulting in poor pretreatment performance. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a hydrogen fluoride recovery device, which aims to improve the problems of uneven mixing and difficulty in cleaning and replacing the filter screen in the prior art.

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

[0007] A hydrogen fluoride recovery device includes a base, a pretreatment box fixedly connected to the top of the base, a support base fixedly connected to the top of the base, a washing base fixedly connected to the top of the base, an absorption tower fixedly connected to the inner side of the support base, a support plate fixedly connected to the outer side of the support base, an absorption tank fixedly connected to the top of the support plate, an absorption pipe fixedly connected to the outer wall of the absorption tank, the other end of the absorption pipe fixedly connected to the outer wall of the absorption tower, a motor fixedly connected to the top of the absorption tower, a mixing column fixedly connected to the drive end of the motor, a main gear fixedly connected to the outer wall of the mixing column, an external gear fixedly connected to the inner wall of the absorption tower, two auxiliary gears meshing with the main gear on one side of the auxiliary gear, a mixing paddle fixedly connected inside the auxiliary gear, and a conveying pipe fixedly connected to the bottom of the absorption tower.

[0008] As a further description of the above technical solution:

[0009] An input pipe is fixedly connected to the outside of the pretreatment box. A pull-out groove is provided inside the pretreatment box. A filter plate is slidably connected to the pull-out groove inside the pretreatment box. Pull-out cylinders are fixedly connected to both sides of the filter plate. The pull-out cylinders are inserted and connected to both sides of the pretreatment box. A locking tube is rotatably connected inside the pull-out cylinder. Locking buckles are fixedly connected to both sides of the pretreatment box. One end of the pull-out cylinder is inserted and connected to the middle of the locking buckle. A straight pipe is fixedly connected to the outer wall of the pretreatment box. The other end of the straight pipe is fixedly connected to the outer wall of the absorption tower.

[0010] As a further description of the above technical solution:

[0011] A desorption tower is fixedly connected to the inner side of the support base. A reboiler is fixedly connected to the inner wall of the desorption tower. A reflux seat is fixedly connected to the outer wall of the desorption tower. A reflux tank is fixedly connected to the top of the reflux seat. A reflux cylinder is fixedly connected to the top of the reflux tank. The other end of the reflux cylinder is fixedly connected to the top of the desorption tower.

[0012] As a further description of the above technical solution:

[0013] A washing tub is fixedly connected to the inner side of the washing base, a washing pipe is fixedly connected to the outer wall of the washing tub, the other end of the washing pipe is fixedly connected to the outer wall of the desorption tower, and a dryer is fixedly connected to the inner wall of the washing tub.

[0014] As a further description of the above technical solution:

[0015] A spray pipe is fixedly connected to the top of the washing tub, and a washing box is fixedly connected to the other end of the spray pipe.

[0016] As a further description of the above technical solution:

[0017] A fan base is fixedly connected to the top of the base.

[0018] As a further description of the above technical solution:

[0019] A fan is fixedly connected to the top of the fan base, and an exhaust duct is fixedly connected to the top of the fan. The other end of the exhaust duct is fixedly connected to the outer wall of the washing tub.

[0020] As a further description of the above technical solution:

[0021] An exhaust pipe is fixedly connected to the top of the washing tub.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, the motor above the absorption tower drives the mixing column to make the main gear and two auxiliary gears mesh with the external gear. The two auxiliary gears drive the mixing paddle below to stir, thereby ensuring that the absorbent concentration, temperature and other parameters are uniform, avoiding local oversaturation crystallization or insufficient reaction, and improving the recovery efficiency and recovery quality of hydrogen fluoride.

[0024] 2. In this utility model, the pull-out groove inside the pretreatment box and the filter plate adopt a sliding connection structure. The pull-out cylinders on both sides of the filter plate are inserted into both sides of the pretreatment box, and the locking tubes inside the pull-out cylinders form a locking structure with the locks on both sides of the pretreatment box. When it is necessary to disassemble the filter plate, simply rotate the locking tube to release the lock, and the filter plate can be pulled out from the pull-out groove through the pull-out cylinder. The operation is simple and convenient for cleaning or replacing the filter plate. Attached Figure Description

[0025] Figure 1 This is a three-dimensional schematic diagram of a hydrogen fluoride recovery device proposed in this utility model;

[0026] Figure 2 This is a schematic diagram of the pretreatment box of a hydrogen fluoride recovery device proposed in this utility model;

[0027] Figure 3 This is a schematic diagram of the structure of the absorption tower of a hydrogen fluoride recovery device proposed in this utility model;

[0028] Figure 4 This is a schematic diagram of the desorption tower of a hydrogen fluoride recovery device proposed in this utility model;

[0029] Figure 5 This is a schematic diagram of the structure of the washing tank of a hydrogen fluoride recovery device proposed in this utility model.

[0030] Legend:

[0031] 1. Base; 2. Pretreatment box; 3. Exhaust duct; 4. Washing seat; 5. Support seat; 6. Absorption tower; 7. Support plate; 8. Absorption tank; 9. Absorption pipe; 10. Motor; 11. Mixing column; 12. Main gear; 13. External gear; 14. Secondary gear; 15. Mixing paddle; 16. Conveyor pipe; 17. Input pipe; 18. Filter plate; 19. Pull-out cylinder; 20. Locking pipe; 21. Locking buckle; 22. Desorption tower; 23. Reboiler; 24. Reflux seat; 25. Reflux tank; 26. Reflux cylinder; 27. Fan; 28. Washing tank; 29. ​​Washing pipe; 30. Dryer; 31. Spray pipe; 32. Washing box; 33. Fan seat; 34. Exhaust duct; 35. Straight pipe. Detailed Implementation

[0032] 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.

[0033] Reference Figure 1 and Figure 2 An embodiment of this utility model includes: a base 1 for stabilizing the machine; a pretreatment box 2 fixedly connected to the top of the base 1 for storing the hydrogen fluoride to be recovered; a support base 5 fixedly connected to the top of the base 1 for stabilizing the absorption tower 6 and desorption tower 22; a washing base 4 fixedly connected to the top of the base 1 for stabilizing the washing tank 28; an absorption tower 6 fixedly connected to the inner side of the support base 5 for separating the mixed gas; a support plate 7 fixedly connected to the outer side of the support base 5 for supporting the absorption tank 8; an absorption tank 8 fixedly connected to the top of the support plate 7 for storing the absorbent; an absorption pipe 9 fixedly connected to the outer wall of the absorption tank 8 for conveying the absorbent; and the other end of the absorption pipe 9 fixedly connected to... On the outer wall of the absorption tower 6, a motor 10 is fixedly connected to the top of the absorption tower 6, serving as the power unit for the mixing column 11. The drive end of the motor 10 is fixedly connected to the mixing column 11, which is used to drive the mixing column 11 to rotate. A main gear 12 is fixedly connected to the outer wall of the mixing column 11, which is used to drive the main gear 12 to rotate. An external gear 13 is fixedly connected to the inner wall of the absorption tower 6, which is used to mesh with two auxiliary gears 14. The external gear 13 meshes with the two auxiliary gears 14 on one side of the main gear 12, which is used to drive the mixing paddle 15. A mixing paddle 15 is fixedly connected inside the auxiliary gear 14, which is used to stir the absorbent. A conveying pipe 16 is fixedly connected to the bottom of the absorption tower 6, which is used to convey the absorbed hydrogen fluoride.

[0034] Reference Figure 1 and Figure 3An input pipe 17 is fixedly connected to the outside of the pretreatment box 2 for conveying the hydrogen fluoride to be filtered to the pretreatment box 2. The pretreatment box 2 is provided with a pull-out groove for pulling out the filter plate 18. The filter plate 18 is slidably connected to the pull-out groove inside the pretreatment box 2 for filtering hydrogen fluoride. Pull-out cylinders 19 are fixedly connected to both sides of the filter plate 18 for pulling out the filter plate 18. The pull-out cylinders 19 are inserted and connected to both sides of the pretreatment box 2 for stabilizing the filter plate 18. A locking tube 20 is rotatably connected inside the pull-out cylinder for locking the position of the pull-out cylinder 19. Locks 21 are fixedly connected to both sides of the pretreatment box 2 for locking the locking tube 20. One end of the pull-out cylinder 19 is inserted and connected to the middle of the lock 21 for rotation and unlocking. A straight pipe 35 is fixedly connected to the outer wall of the pretreatment box 2 for introducing the filtered hydrogen fluoride into the absorption tower 6. The other end of the straight pipe 35 is fixedly connected to the outer wall of the absorption tower 6 for outputting the filtered hydrogen fluoride.

[0035] Reference Figure 1 , Figure 4 , Figure 5 A desorption tower 22 is fixedly connected to the inner side of the support base 5 for recovering and reusing the absorbed hydrogen fluoride. A reboiler 23 is fixedly connected to the inner wall of the desorption tower 22 for heating and desorption. A reflux seat 24 is fixedly connected to the outer wall of the desorption tower 22 for supporting the reflux tank 25. A reflux tank 25 is fixedly connected to the top of the reflux seat 24 for holding the recovered hydrogen fluoride. A reflux cylinder 26 is fixedly connected to the top of the reflux tank 25 for conveying the recovered hydrogen fluoride. The other end of the reflux cylinder 26 is fixedly connected to the top of the desorption tower 22 for conveying the recovered hydrogen fluoride to the reflux tank 26. A washing tank 28 is fixedly connected to the inner side of the washing base 4 for fixing the position of the washing tank 28. A washing pipe 29 is fixedly connected to the outer wall of the washing tank 28 for processing the desorbed hydrogen fluoride. The other end of the washing pipe 29 is fixedly connected to... A dryer 30 is fixedly connected to the outer wall of the desorption tower 22 to transfer the hydrogen fluoride to be treated into the washing tank 28. A dryer 30 is fixedly connected to the inner wall of the washing tank 28 to remove moisture from the gas. A spray pipe 31 is fixedly connected to the top of the washing tank 28 to spray detergent. A washing box 32 is fixedly connected to the other end of the spray pipe 31 to hold the detergent. A fan base 33 is fixedly connected to the top of the base 1 to fix the fan 27. A fan 27 is fixedly connected to the top of the fan base 33 to generate airflow. An exhaust duct 3 is fixedly connected to the top of the fan 27 to transmit airflow. The other end of the exhaust duct 3 is fixedly connected to the outer wall of the washing tank 28. An exhaust pipe 34 is fixedly connected to the top of the washing tank 28 to input airflow into the washing tank 28 and discharge the qualified exhaust gas in the washing tank 28 through the exhaust pipe 34.

[0036] Working principle: Hydrogen fluoride gas enters the pretreatment tank 2 through the input pipe 17, is filtered by the removable filter plate 18, and is then sent to the absorption tower 6 through the straight pipe 35. The absorbent in the absorption tank 8 enters the absorption tower 6 through the absorption pipe 9. The motor 10 drives the mixing column 11 to rotate, and the main gear 12 meshes with the external gear 13 to drive the two auxiliary gears 14 to rotate, so that the mixing paddle 15 stirs the absorbent, ensuring that the absorbent concentration and temperature are uniform and that hydrogen fluoride is fully absorbed. The absorbed liquid is sent to the desorption tower 22 through the transfer pipe 16, and the reboiler 23 heats and desorbs the hydrogen fluoride. The desorbed hydrogen fluoride gas enters the reflux tank 25 through the reflux cylinder 26 for recovery. The desorbed tail gas enters the washing tank 28 through the washing pipe 29, is sprayed with detergent through the spray pipe 31 for washing, and is dried by the dryer 30. The fan 27 discharges the treated qualified tail gas through the exhaust pipe 34.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A hydrogen fluoride recovery device, comprising a base (1), characterized in that: A pretreatment box (2) is fixedly connected to the top of the base (1), a support seat (5) is fixedly connected to the top of the base (1), a washing seat (4) is fixedly connected to the top of the base (1), an absorption tower (6) is fixedly connected to the inner side of the support seat (5), a support plate (7) is fixedly connected to the outer side of the support seat (5), an absorption tank (8) is fixedly connected to the top of the support plate (7), an absorption pipe (9) is fixedly connected to the outer wall of the absorption tank (8), and the other end of the absorption pipe (9) is fixedly connected to the absorption tower (6). The top of the absorption tower (6) is fixedly connected to a motor (10), the drive end of the motor (10) is fixedly connected to a mixing column (11), the outer wall of the mixing column (11) is fixedly connected to a main gear (12), the inner wall of the absorption tower (6) is fixedly connected to an external gear (13), the external gear (13) and the main gear (12) are meshed with two auxiliary gears (14) on opposite sides, the interior of the auxiliary gears (14) is fixedly connected to a mixing paddle (15), and the bottom of the absorption tower (6) is fixedly connected to a conveying pipe (16).

2. The hydrogen fluoride recovery device according to claim 1, characterized in that: An input pipe (17) is fixedly connected to the outside of the pretreatment box (2). A pull-out groove is provided inside the pretreatment box (2). A filter plate (18) is slidably connected to the pull-out groove inside the pretreatment box (2). Pull-out cylinders (19) are fixedly connected to both sides of the filter plate (18). The pull-out cylinders (19) are inserted and connected to both sides of the pretreatment box (2). A locking pipe (20) is rotatably connected inside the pull-out groove. Locks (21) are fixedly connected to both sides of the pretreatment box (2). One end of the pull-out cylinder (19) is inserted and connected to the middle of the lock (21). A straight pipe (35) is fixedly connected to the outer wall of the pretreatment box (2). The other end of the straight pipe (35) is fixedly connected to the outer wall of the absorption tower (6).

3. The hydrogen fluoride recovery device according to claim 1, characterized in that: A desorption tower (22) is fixedly connected to the inner side of the support base (5). A reboiler (23) is fixedly connected to the inner wall of the desorption tower (22). A reflux seat (24) is fixedly connected to the outer wall of the desorption tower (22). A reflux tank (25) is fixedly connected to the top of the reflux seat (24). A reflux cylinder (26) is fixedly connected to the top of the reflux tank (25). The other end of the reflux cylinder (26) is fixedly connected to the top of the desorption tower (22).

4. The hydrogen fluoride recovery device according to claim 3, characterized in that: The washing base (4) is fixedly connected to the inner side of the washing tub (28), the outer wall of the washing tub (28) is fixedly connected to the washing pipe (29), the other end of the washing pipe (29) is fixedly connected to the outer wall of the desorption tower (22), and the inner wall of the washing tub (28) is fixedly connected to the dryer (30).

5. The hydrogen fluoride recovery device according to claim 4, characterized in that: A spray pipe (31) is fixedly connected to the top of the washing tub (28), and a washing box (32) is fixedly connected to the other end of the spray pipe (31).

6. The hydrogen fluoride recovery device according to claim 1, characterized in that: The top of the base (1) is fixedly connected to the fan base (33).

7. The hydrogen fluoride recovery device according to claim 6, characterized in that: A fan (27) is fixedly connected to the top of the fan base (33), and an exhaust duct (3) is located on the top of the fan (27). The other end of the exhaust duct (3) is fixedly connected to the outer wall of the washing tub (28).

8. A hydrogen fluoride recovery device according to claim 4, characterized in that: An exhaust pipe (34) is fixedly connected to the top of the washing tub (28).

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