Packed tower with circulating reflux function and use method thereof

Abstract

The invention relates to a packed tower with a circulating backflow function and a using method thereof.The packed tower comprises a tower body, a liquid outlet pipe and a gas inlet pipe are installed at the bottom of the tower body, a liquid inlet pipe and a gas outlet pipe are installed at the top of the tower body, the liquid outlet pipe is communicated with a backflow pipe and a liquid drainage pipe through a first reversing valve, and the backflow pipe is communicated with the liquid inlet pipe; the return pipe is provided with a liquid pump which is communicated with the gas outlet pipe and the gas outlet pipe through a second reversing valve; through reversing adjustment of the first reversing valve and the second reversing valve, communication between the liquid outlet pipe and the liquid inlet pipe and communication between the gas inlet pipe and the gas outlet pipe are conveniently achieved, then circulating backflow of gas and liquid is achieved, and full contact of the gas and the liquid in the plate wave packing is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of packed towers, in particular to a packed tower with a circulation reflux function and a use method thereof. Background Art

[0002] Packed towers offer low fluid resistance and are suitable for processes with large gas volumes and small liquid volumes. Liquid flows downward along the packing surface, with the gas and liquid flowing in countercurrent or cocurrent, depending on the specific reaction. Packed towers contain relatively small amounts of liquid, and the flow pattern within the tower, whether in the gas or liquid phase, resembles piston flow.

[0003] When gas and liquid come into contact in the packing of a packed tower, multiple layers of packing are often used to ensure sufficient contact, which increases the height and volume of the packed tower, resulting in a large amount of space occupied. At the same time, after the gas and liquid are fully in contact, a large amount of foam is easily generated. If not handled in time, the foam will enter the exhaust pipe, causing a large amount of liquid to be contained in the gas. Summary of the Invention

[0004] The problem solved by the present invention is to provide a packed tower with a circulation reflux function and a method for using the same, so as to solve the technical problem that when gas and liquid come into contact in the packing of the packed tower, in order to ensure sufficient contact, multiple layers of packing are often provided, thereby increasing the height and volume of the packed tower and causing a large space to be occupied; at the same time, after the gas and liquid are fully in contact, a large amount of foam is easily generated. If not handled in time, the foam will enter the exhaust pipe, resulting in a large amount of liquid contained in the gas.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A packed tower with a circulation reflux function comprises a tower body, a liquid outlet pipe and an air inlet pipe are installed at the bottom of the tower body, a liquid inlet pipe and an air outlet pipe are installed at the top of the tower body, the liquid outlet pipe is connected to a reflux pipe and a liquid discharge pipe through a first reversing valve, and the reflux pipe is connected to the liquid inlet pipe, a liquid pump is installed on the reflux pipe, and the air inlet pipe is connected to the air outlet pipe and an exhaust pipe through a second reversing valve;

[0007] The inside of the tower body is sequentially installed with a first filler support, a first plate wave filler, a first liquid distributor, a liquid collector, a second filler support, a second plate wave filler, a second liquid distributor and a defoaming mechanism from bottom to top, and the inner end of the liquid inlet pipe is located between the second liquid distributor and the defoaming mechanism.

[0008] Preferably, the defoaming mechanism includes a mounting plate fixedly mounted to the tower body, and a first motor and a triangular box are mounted on the top side of the mounting plate.

[0009] Preferably, a shaft sleeve is installed at the output end of the first motor, and the shaft sleeve is movably installed with the polygonal shaft.

[0010] Preferably, a threaded sleeve is installed on the mounting plate for equal angle rotation, and a synchronous wheel is installed on the top of the threaded sleeve inside the triangular box. Several of the synchronous wheels are connected through a synchronous belt transmission. A second motor is installed on the triangular box, and the output end of the second motor is connected to one of the synchronous wheels.

[0011] Preferably, the threaded sleeve is threadedly connected to the threaded rod, and the bottom end of the threaded rod is connected to the lifting cover.

[0012] Preferably, the lifting cover is installed with a polygonal shaft bearing at the center, a turntable is installed at the bottom end of the polygonal shaft, an impeller is installed on the bottom side of the turntable through a connecting rod, and a foam inlet pipe is installed on the bottom side of the impeller.

[0013] A method for using a packed tower with a circulating reflux function, the specific operation of the method is as follows:

[0014] Step 1: The liquid enters the tower body through the liquid inlet pipe and flows downward from the top of the tower body. The gas enters the tower body through the air inlet pipe and moves upward from the bottom of the tower body. At this time, the liquid is evenly sprinkled on the second plate wave packing through the second liquid distributor to fully contact with the gas. Then, it is collected by the liquid collector and transported to the first liquid distributor. After passing through the first liquid distributor, it is evenly sprinkled on the first plate wave packing to fully contact with the gas. Then, the gas is discharged through the air outlet pipe, and the liquid is discharged through the liquid outlet pipe and the drain pipe;

[0015] Step 2: The liquid outlet pipe and the liquid inlet pipe are connected through the first reversing valve, and the liquid pump works to transport the liquid back into the tower body through the discharge pipe, the return pipe and the liquid inlet pipe. The air inlet pipe and the air outlet pipe are connected through the second reversing valve, and the gas is transported back into the tower body through the air outlet pipe and the air inlet pipe, thus realizing the circulation and reflux contact of liquid and gas.

[0016] Step three: The second motor drives one of the synchronous wheels to rotate, and the synchronous belt transmission is used to realize the synchronous rotation of several synchronous wheels. At this time, the rotating threaded sleeve cooperates with the threaded rod connected with the thread to realize the lifting and lowering of the lifting cover. When the lifting cover is lifted, the polygonal shaft moves in the sleeve. At this time, the first motor is used to realize the rotation of the sleeve, polygonal shaft, turntable, connecting rod, impeller and foam inlet pipe. The generated foam is located on the impeller through the foam inlet pipe. As the impeller rotates, the foam is thrown to the inner wall of the lifting cover by centrifugal force to achieve foam crushing.

[0017] The beneficial effects of the present invention are as follows: by adjusting the direction of the first reversing valve and the second reversing valve, the liquid outlet pipe and the liquid inlet pipe are connected, and the air inlet pipe and the air outlet pipe are connected, thereby realizing the circulation and reflux of gas and liquid, and facilitating full contact between gas and liquid in the plate wave packing;

[0018] The lifting cover is raised and lowered by the second motor, thereby adjusting the height of the foam inlet pipe, so as to facilitate adjustment of the foam inlet pipe according to the height of the generated foam, thereby preventing excessive foam from entering the air intake pipe. At the same time, the highly rotating impeller utilizes centrifugal force to throw the foam to the inner wall of the lifting cover, thereby breaking the foam and achieving defoaming. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic structural diagram of the defoaming mechanism of the present invention;

[0021] Figure 3 This is a schematic diagram of the internal structure of the lifting cover of the present invention;

[0022] Figure 4 Schematic diagram of the internal structure of the liquid distributor of the present invention.

[0023] Legend:

[0024] 1. Tower body; 2. Liquid outlet pipe; 3. Liquid inlet pipe; 4. First reversing valve; 5. Reflux pipe; 6. Liquid drain pipe; 7. Liquid pump; 8. Air inlet pipe; 9. Air outlet pipe; 10. Second reversing valve; 11. Exhaust pipe; 12. First packing support; 13. First plate wave packing; 14. First liquid distributor; 15. Liquid collector; 16. Second packing support; 17. Second plate wave packing; 18. Second liquid distributor; 19. Defoaming mechanism; 20. Mounting plate; 21. First motor; 22. Bushing; 23. Polygonal shaft; 24. Triangular box; 25. Threaded sleeve; 26. Threaded rod; 27. Lifting cover; 28. Second motor; 29. ​​Synchronous wheel; 30. Synchronous belt; 31. Turntable; 32. Connecting rod; 33. Impeller; 34. Foam inlet pipe. DETAILED DESCRIPTION

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0026] Specific examples are given below.

[0027] See also Figures 1 to 4, a packed tower with a circulation reflux function, comprising a tower body 1, a liquid outlet pipe 2 and an air inlet pipe 8 are installed at the bottom of the tower body 1, a liquid inlet pipe 3 and an air outlet pipe 9 are installed on the top of the tower body 1, the liquid outlet pipe 2 is connected with the reflux pipe 5 and the liquid discharge pipe 6 through a first reversing valve 4, and the reflux pipe 5 is connected with the liquid inlet pipe 3, the reflux pipe 5 is installed with a liquid pump 7, the air inlet pipe 8 is connected with the air outlet pipe 9 and the exhaust pipe 11 through a second reversing valve 10, and the reversing adjustment of the first reversing valve 4 and the second reversing valve 10 facilitates the communication between the liquid outlet pipe 2 and the liquid inlet pipe 3 and the communication between the air inlet pipe 9 and the air outlet pipe 8, thereby realizing the circulation reflux of gas and liquid, and facilitating the full contact between gas and liquid in the plate wave packing;

[0028] The inside of the tower body 1 is sequentially installed with a first packing support 12, a first plate wave packing 13, a first liquid distributor 14, a liquid collector 15, a second packing support 16, a second plate wave packing 17, a second liquid distributor 18 and a defoaming mechanism 19 from bottom to top, and the inner end of the liquid inlet pipe 3 is located between the second liquid distributor 18 and the defoaming mechanism 19.

[0029] The defoaming mechanism 19 includes a mounting plate 20 fixedly mounted on the tower body 1, a first motor 21 and a triangular box 24 are mounted on the top side of the mounting plate 20, a shaft sleeve 22 is mounted on the output end of the first motor 21, and the shaft sleeve 22 is movably mounted on the polygonal shaft 23. When the lifting cover 27 is raised or lowered, the polygonal shaft 23 slides in the shaft sleeve 22, and a threaded sleeve 25 is mounted on the mounting plate 20 for equal angle rotation, and the top of the threaded sleeve 25 is located inside the triangular box 24 and a synchronous wheel 29 is mounted. Several synchronous wheels 29 are connected by a synchronous belt 30. A second motor 28 is mounted on the triangular box 24, and the output end of the second motor 28 is connected to one of the synchronous wheels 29. The threaded sleeve 25 is threadedly connected to the threaded rod 26, and the bottom end of the threaded rod 26 is connected to the lifting cover 27. The work drives one of the synchronous wheels 29 to rotate, and the synchronous belt 30 is used for transmission to realize the synchronous rotation of several synchronous wheels 29. At this time, the rotating threaded sleeve 25 cooperates with the threaded rod 26 connected by thread to realize the lifting and lowering of the lifting cover 27. The center of the lifting cover 27 is installed with a bearing of the polygonal shaft 23. A turntable 31 is installed at the bottom end of the polygonal shaft 23. An impeller 33 is installed on the bottom side of the turntable 31 through a connecting rod 32. A foam inlet pipe 34 is installed on the bottom side of the impeller 33. The rotation of the sleeve 22, the polygonal shaft 23, the turntable 31, the connecting rod 32, the impeller 33 and the foam inlet pipe 34 is realized by the operation of the first motor 21. The generated foam is located on the impeller 33 through the foam inlet pipe 34. As the impeller 33 rotates, the foam is thrown to the inner wall of the lifting cover 27 by centrifugal force to achieve foam crushing.

[0030] The specific operation of this method is as follows:

[0031] The liquid enters the tower body 1 through the liquid inlet pipe 3 and flows downward from the top of the tower body 1. The gas enters the tower body 1 through the air inlet pipe 8 and moves upward from the bottom of the tower body 1. At this time, the liquid is evenly sprinkled on the second plate wave filler 17 through the second liquid distributor 18 to fully contact with the gas. Then, it is collected by the liquid collector 15 and transported to the first liquid distributor 14. After passing through the first liquid distributor 14, it is evenly sprinkled on the first plate wave filler 13 to fully contact with the gas. Then, the gas is discharged through the air outlet pipe 9, and the liquid is discharged through the liquid outlet pipe 2 and the drain pipe 6. The connection between the liquid outlet pipe 2 and the liquid inlet pipe 3 is achieved through the first reversing valve 4. The liquid pump 7 works to transport the liquid through the drain pipe 6, the reflux pipe 5 and the liquid inlet pipe 3 to the tower body 1 again, and the connection between the air inlet pipe 8 and the air outlet pipe is achieved through the second reversing valve 10. 9 is connected, and the gas is transported to the tower body 1 again through the outlet pipe 9 and the inlet pipe 8, so as to realize the circulation reflux contact of liquid and gas. The second motor 28 drives one of the synchronous wheels 29 to rotate, and the synchronous belt 30 is used for transmission to realize the synchronous rotation of several synchronous wheels 29. At this time, the rotating threaded sleeve 25 cooperates with the threaded rod 26 connected with the thread to realize the lifting and lowering of the lifting cover 27. When the lifting cover 27 is lifted, the polygonal shaft 23 moves in the sleeve 22. At this time, the first motor 21 is used to realize the rotation of the sleeve 22, the polygonal shaft 23, the turntable 31, the connecting rod 32, the impeller 33 and the foam inlet pipe 34. The generated foam is located on the impeller 33 through the foam inlet pipe 34. As the impeller 33 rotates, the foam is thrown to the inner wall of the lifting cover 27 by centrifugal force to realize foam crushing.

[0032] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A packed tower with a circulation reflux function, characterized in that: The tower body (1) comprises a liquid outlet pipe (2) and an air inlet pipe (8) installed at the bottom of the tower body (1), a liquid inlet pipe (3) and an air outlet pipe (9) installed at the top of the tower body (1), the liquid outlet pipe (2) being connected to a return pipe (5) and a liquid discharge pipe (6) through a first reversing valve (4), and the return pipe (5) being connected to the liquid inlet pipe (3), a liquid pump (7) being installed on the return pipe (5), and the air inlet pipe (8) being connected to the air outlet pipe (9) and an air discharge pipe (11) through a second reversing valve (10); The tower body (1) is provided with a first packing support (12), a first plate wave packing (13), a first liquid distributor (14), a liquid collector (15), a second packing support (16), a second plate wave packing (17), a second liquid distributor (18) and a defoaming mechanism (19) in sequence from bottom to top, and the inner end of the liquid inlet pipe (3) is located between the second liquid distributor (18) and the defoaming mechanism (19).

2. A packed tower with a circulation reflux function according to claim 1, characterized in that: The defoaming mechanism (19) comprises a mounting plate (20) fixedly mounted on the tower body (1), and a first motor (21) and a triangular box (24) are mounted on the top side of the mounting plate (20).

3. A packed tower with a circulation reflux function according to claim 2, characterized in that: A shaft sleeve (22) is installed at the output end of the first motor (21), and the shaft sleeve (22) and the polygonal shaft (23) are movably installed.

4. A packed tower with a circulation reflux function according to claim 3, characterized in that: A threaded sleeve (25) is rotatably mounted on the mounting plate (20) at an equal angle, and a synchronous wheel (29) is mounted on the top of the threaded sleeve (25) inside the triangular box (24). A plurality of the synchronous wheels (29) are connected by a synchronous belt (30). A second motor (28) is mounted on the triangular box (24), and an output end of the second motor (28) is connected to one of the synchronous wheels (29).

5. A packed tower with a circulation reflux function according to claim 4, characterized in that: The threaded sleeve (25) is threadedly connected to the threaded rod (26), and the bottom end of the threaded rod (26) is connected to the lifting cover (27).

6. A packed tower with a circulation reflux function according to claim 5, characterized in that: The lifting cover (27) is mounted at the center of the polygonal shaft (23) bearing, a rotating disk (31) is mounted at the bottom end of the polygonal shaft (23), an impeller (33) is mounted on the bottom side of the rotating disk (31) via a connecting rod (32), and a foam inlet pipe (34) is mounted on the bottom side of the impeller (33).

7. The method for using a packed tower with a circulation reflux function according to claim 6, characterized in that: The specific operation of this method is as follows: Step 1: liquid enters the tower body (1) through the liquid inlet pipe (3) and flows downward from the top of the tower body (1); gas enters the tower body (1) through the gas inlet pipe (8) and moves upward from the bottom of the tower body (1); at this time, the liquid is evenly sprinkled on the second plate wave filler (17) through the second liquid distributor (18) to fully contact with the gas; then, the liquid is collected and transported to the first liquid distributor (14) through the liquid collector (15); then, the liquid is evenly sprinkled on the first plate wave filler (13) through the first liquid distributor (14) to fully contact with the gas; then, the gas is discharged through the gas outlet pipe (9); and the liquid is discharged through the liquid outlet pipe (2) and the liquid discharge pipe (6); Step 2: The liquid outlet pipe (2) is connected to the liquid inlet pipe (3) through the first reversing valve (4), and the liquid pump (7) operates to transport the liquid through the liquid discharge pipe (6), the reflux pipe (5) and the liquid inlet pipe (3) to the tower body (1) again. The gas inlet pipe (8) is connected to the gas outlet pipe (9) through the second reversing valve (10), and the gas is transported to the tower body (1) again through the gas outlet pipe (9) and the gas inlet pipe (8), thereby achieving cyclic reflux contact between the liquid and the gas. Step 3: The second motor (28) drives one of the synchronous wheels (29) to rotate, and the synchronous belt (30) is used to transmit the synchronous rotation of the plurality of synchronous wheels (29). At this time, the rotating threaded sleeve (25) cooperates with the threaded rod (26) connected with the thread to realize the lifting and lowering of the lifting cover (27). When the lifting cover (27) is lifted or lowered, the polygonal shaft (23) moves in the shaft sleeve (22). At this time, the first motor (21) is used to realize the rotation of the shaft sleeve (22), the polygonal shaft (23), the rotating disk (31), the connecting rod (32), the impeller (33) and the foam inlet pipe (34). The generated foam passes through the foam inlet pipe (34) and is located on the impeller (33). As the impeller (33) rotates, the foam is thrown to the inner wall of the lifting cover (27) by centrifugal force, thereby realizing the foam crushing.

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