Hydrofluoric acid absorption tower capable of preventing backflow
By designing the structure of the intake pipe, the second filter mesh, ceramic ball and the spray head in the hydrofluoric acid absorption tower, the problem of waste gas in the absorption tower is solved, gas-liquid separation is achieved, and purification efficiency and stability are improved.
Patent Information
- Application Number
- CN202421544495.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-02
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-07-02
AI Technical Summary
When the treatment liquid is reflowed intermittently, the existing absorption tower cannot effectively prevent the waste gas from pouring back, resulting in pollutant leakage.
A hydrofluoric acid absorption tower including an intake pipe, a second filter mesh, a ceramic ball and a shower head is designed. Through mutual cooperation of the structures, the gap is reduced to the gas barrier, and the gas-liquid separation is achieved by using different flow methods between gas molecules and liquid molecules to prevent gas backflow.
It effectively prevents the backflow of exhaust gas, improves the gas purification efficiency, ensures the stability and safety of the absorption tower, and avoids the blockage of debris on the shower head, increasing the stability and efficiency of the purification gas.
Smart Images
Figure CN222855035U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of chemical equipment, in particular to a hydrofluoric acid absorption tower capable of preventing backflow. Background Art
[0002] The spray absorption tower is a device that achieves air purification by spraying. The working principle of the spray tower is to utilize the contact between gas and spray liquid to transfer the pollutants in the gas to be treated into the liquid, thereby achieving the purpose of exhaust gas purification.
[0003] However, according to the common absorption towers on the market, in order to achieve the recycling of the treated liquid, during the intervals of the treated liquid reflux, part of the exhaust gas escapes from the interior of the absorption tower through the reflux pipe, which may cause the leakage of pollutants in the exhaust gas.
[0004] Therefore, in view of the above problems, a hydrofluoric acid absorption tower for preventing backflow is proposed. Utility Model Content
[0005] In order to make up for the deficiency of the prior art and the problem that the exhaust gas backflow cannot be prevented, the utility model provides a hydrofluoric acid absorption tower capable of preventing the backflow.
[0006] The technical solution adopted by the utility model to solve its technical problems is: a hydrofluoric acid absorption tower for preventing backflow, comprising a tower shell, an air inlet pipe is fixedly installed in the middle part of one side of the tower shell, a cross pipe, a first filter screen, a second filter screen, and a conical flow guide cover are fixedly installed in the inner cavity of the tower shell from top to bottom, a plurality of ceramic balls are movably installed on the top of the second filter screen, and a plurality of first spray heads are fixedly installed on the bottom of the cross pipe.
[0007] Preferably, pipe joints are fixedly installed on both sides of the top of the tower shell, a second spray head is fixedly installed on the bottom of the pipe joint, and a second liquid inlet pipe is fixedly installed inside the pipe joint.
[0008] Preferably, a plurality of filling pipes are fixedly mounted on the front side of the tower shell, and a first liquid inlet pipe is fixedly mounted on one side of the transverse pipe.
[0009] Preferably, a reflux pipe is fixedly installed at the middle part of the bottom of the tower shell, and a concave water tank is fixedly installed at the bottom of the tower shell.
[0010] Preferably, a through hole is provided on the top of the concave water tank, and a drain pipe is fixedly installed on one side of the concave water tank.
[0011] Preferably, a liquid adding pipe is fixedly mounted on one side of the top of the concave water tank, a plurality of legs are fixedly mounted on the bottom of the concave water tank, and a transparent window is provided on the front of the concave water tank.
[0012] Preferably, an exhaust pipe is fixedly installed in the middle part of the top of the tower shell.
[0013] The beneficial effects of the utility model are:
[0014] 1. The utility model realizes the function of preventing gas backflow through the structural design of the air inlet pipe, the second filter and the ceramic ball, and through the mutual cooperation between the structures. Therefore, the gas can be blocked by reducing the gap, and the different flow modes of gas molecules and liquid molecules are utilized to achieve the purpose of gas-liquid separation, thereby solving the problem that the exhaust gas backflow cannot be prevented. At the same time, it also helps to improve the gas purification efficiency and ensure the stability and safety of the absorption tower operation. Through the setting of the first filter, it is convenient to block the debris in the exhaust gas to prevent the debris from rising with the gas and clogging the spray head, thereby increasing the stability and efficiency of the purified gas.
[0015] 2. The utility model uses the structural design of the second spray head to facilitate the cooperation with the first spray head to realize the function of cascade purification of exhaust gas, thereby ensuring that pollutants in the exhaust gas have more opportunities to be purified, and at the same time ensuring that the spraying area is the same as the cross-section of the inner cavity of the tower shell, thereby ensuring sufficient contact between the exhaust gas and hydrofluoric acid. The setting of the transparent window facilitates real-time observation of the storage amount of liquid hydrofluoric acid in the inner cavity of the concave water tank. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0017] Figure 1 This is a schematic diagram of the front three-dimensional structure of the utility model;
[0018] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model from the back;
[0019] Figure 3 It is a side-view stereoscopic cross-sectional structural schematic diagram of the utility model;
[0020] Figure 4 It is a front view stereoscopic cross-sectional structural schematic diagram of the utility model;
[0021] Figure 5 It is a schematic structural diagram of the utility model in a front planar cross-section.
[0022] In the figure: 1. tower shell; 2. air inlet pipe; 3. cross pipe; 4. first filter screen; 5. second filter screen; 6. conical guide cover; 7. ceramic ball; 8. first spray head; 9. pipe joint; 10. second spray head; 11. second liquid inlet pipe; 12. stuffing pipe; 13. first liquid inlet pipe; 14. return pipe; 15. concave water tank; 16. through hole; 17. drain pipe; 18. liquid adding pipe; 19. support leg; 20. transparent window; 21. exhaust pipe. DETAILED DESCRIPTION
[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0024] The following is combined with Figure 1-5 To further explain this application in detail,
[0025] The embodiment of the present application discloses a hydrofluoric acid absorption tower for preventing backflow, including a tower shell 1, an air inlet pipe 2 is fixedly installed in the middle part of one side of the tower shell 1, a cross pipe 3, a first filter screen 4, a second filter screen 5, and a conical flow guide cover 6 are fixedly installed in the inner cavity of the tower shell 1 from top to bottom, a plurality of ceramic balls 7 are movably installed on the top of the second filter screen 5, and a plurality of first spray heads 8 are fixedly installed at the bottom of the cross pipe 3.
[0026] Reference Figure 1 , Figure 3 , Figure 4 , Figure 5 Through the structural design of the air inlet pipe 2, the second filter screen 5, and the ceramic ball 7, and through the mutual cooperation between the structures, the function of preventing gas backflow is achieved. Therefore, the gas can be blocked by reducing the gap, and the different flow modes of gas molecules and liquid molecules can be used to achieve the purpose of gas-liquid separation, thereby solving the problem of being unable to prevent the backflow of exhaust gas. At the same time, it also helps to improve the gas purification efficiency and ensure the stability and safety of the absorption tower operation. The first filter screen 4 is used to block the debris in the exhaust gas to prevent the debris from rising with the gas and clogging the spray head, thereby increasing the stability and efficiency of the purified gas.
[0027] Pipe joints 9 are fixedly installed on both sides of the top of the tower shell 1 , a second spray head 10 is fixedly installed on the bottom of the pipe joint 9 , and a second liquid inlet pipe 11 is fixedly installed inside the pipe joint 9 .
[0028] Reference Figure 1 , Figure 2 , Figure 3 , Figure 5Through the structural design of the second spray head 10, it is convenient to cooperate with the first spray head 8 to realize the function of cascade purification of the exhaust gas, thereby ensuring that the pollutants in the exhaust gas have more opportunities to be purified. At the same time, it can also ensure that the spraying area is the same as the cross-section of the inner cavity of the tower shell 1, thereby ensuring sufficient contact between the exhaust gas and the hydrofluoric acid. The second liquid inlet pipe 11 is convenient for transporting liquid hydrofluoric acid to the second spray head 10.
[0029] A plurality of filling pipes 12 are fixedly mounted on the front of the tower shell 1 , and a first liquid inlet pipe 13 is fixedly mounted on one side of the transverse pipe 3 .
[0030] Reference Figure 1 , Figure 3 , Figure 5 The filling pipe 12 facilitates maintenance, inspection and cleaning of the interior of the absorption tower, and also facilitates sampling and real-time monitoring of the gas purification degree. The first liquid inlet pipe 13 facilitates the delivery of liquid hydrofluoric acid to the first spray head 8.
[0031] A reflux pipe 14 is fixedly installed at the middle part of the bottom of the tower shell 1 , and a concave water tank 15 is fixedly installed at the bottom of the tower shell 1 .
[0032] Reference Figure 4 and Figure 5 The reflux pipe 14 facilitates the guidance of liquid hydrofluoric acid into the concave water tank 15, thereby achieving the purpose of recycling the liquid hydrofluoric acid. The concave water tank 15 facilitates the carrying of liquid hydrofluoric acid and can also limit the absorption tower, thereby increasing the stability of the absorption tower.
[0033] A through hole 16 is formed at the top of the concave water tank 15 , and a drain pipe 17 is fixedly mounted on one side of the concave water tank 15 .
[0034] Reference Figure 2 , Figure 4 , Figure 5 The liquid hydrofluoric acid in the inner cavity of the concave water tank 15 can be easily discharged through the drain pipe 17, thereby facilitating pressurization thereof.
[0035] A liquid adding pipe 18 is fixedly installed on one side of the top of the concave water tank 15 , a plurality of legs 19 are fixedly installed on the bottom of the concave water tank 15 , and a transparent window 20 is opened on the front of the concave water tank 15 .
[0036] Reference Figure 1 and Figure 2 The transparent window 20 allows for real-time observation of the storage amount of liquid hydrofluoric acid in the inner cavity of the concave water tank 15 .
[0037] An exhaust pipe 21 is fixedly mounted at the middle portion of the top of the tower shell 1 .
[0038] Reference Figure 1 and Figure 5The purified gas can be guided out of the tower shell 1 through the exhaust pipe 21.
[0039] Working principle: When using this device, the exhaust gas is guided into the inner cavity of the tower shell 1 through the air inlet pipe 2. At the same time, the external additional pump absorbs and pressurizes the liquid hydrofluoric acid through the drain pipe 17, and then transports it to the first liquid inlet pipe 13 and the second liquid inlet pipe 11. The liquid hydrofluoric acid reaches the first spray head 8 and the second spray head 10 through the first liquid inlet pipe 13 and the second liquid inlet pipe 11. The exhaust gas is preliminarily purified by the first spray head 8, and the exhaust gas is secondary purified by the second spray head 10. During purification, the exhaust gas is flushed with liquid hydrofluoric acid, and part of the exhaust gas moves downward through The gaps between the ceramic balls 7 block the exhaust gas molecules, thereby preventing them from falling, thereby preventing the exhaust gas from backflowing. The liquid hydrofluoric acid that has fallen passes through the ceramic balls 7 due to the action of molecular surface tension, and is filtered by the second filter screen 5. The filtered liquid hydrofluoric acid is limited by the conical guide cover 6 and enters the concave water tank 15 through the reflux pipe 14. The rising gas is filtered by the first filter screen 4 and is flushed by the first spray head 8 and the second spray head 10. After passing through the first filter screen 4, the rising gas is guided out of the tower shell 1 through the exhaust pipe 21.
[0040] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.
Claims
1. A hydrofluoric acid absorption tower for preventing backflow, characterized in that: The tower shell (1) comprises an air inlet pipe (2) fixedly mounted in the middle of one side of the tower shell (1); a transverse pipe (3), a first filter screen (4), a second filter screen (5), and a conical air guide cover (6) are fixedly mounted in the inner cavity of the tower shell (1) from top to bottom; a plurality of ceramic balls (7) are movably mounted on the top of the second filter screen (5); and a plurality of first spray heads (8) are fixedly mounted on the bottom of the transverse pipe (3).
2. A hydrofluoric acid absorption tower for preventing backflow according to claim 1, characterized in that: Pipe joints (9) are fixedly mounted on both sides of the top of the tower shell (1), a second spray head (10) is fixedly mounted on the bottom of the pipe joint (9), and a second liquid inlet pipe (11) is fixedly mounted inside the pipe joint (9).
3. A hydrofluoric acid absorption tower for preventing backflow according to claim 1, characterized in that: A plurality of filling pipes (12) are fixedly mounted on the front of the tower shell (1), and a first liquid inlet pipe (13) is fixedly mounted on one side of the transverse pipe (3).
4. A hydrofluoric acid absorption tower for preventing backflow according to claim 1, characterized in that: A return pipe (14) is fixedly installed at the middle part of the bottom of the tower shell (1), and a concave water tank (15) is fixedly installed at the bottom of the tower shell (1).
5. A hydrofluoric acid absorption tower for preventing backflow according to claim 4, characterized in that: A through hole (16) is provided on the top of the concave water tank (15), and a drainage pipe (17) is fixedly installed on one side of the concave water tank (15).
6. A hydrofluoric acid absorption tower for preventing backflow according to claim 4, characterized in that: A liquid adding pipe (18) is fixedly mounted on one side of the top of the concave water tank (15), a plurality of supporting legs (19) are fixedly mounted on the bottom of the concave water tank (15), and a transparent viewing window (20) is provided on the front of the concave water tank (15).
7. A hydrofluoric acid absorption tower for preventing backflow according to claim 1, characterized in that: An exhaust pipe (21) is fixedly mounted at the middle portion of the top of the tower shell (1).