Multilayer deacidification tower for tetrafluoroethane production

Abstract

The utility model discloses a multi-layer deacidification tower for tetrafluoroethane production, which comprises a deacidification tower, one side of the deacidification tower is communicated and connected with an air inlet pipe, the top end of the deacidification tower is communicated and connected with an exhaust pipe, and the upper end and the lower end of the air inlet pipe are fixedly connected with connecting seats communicated and connected with the interior of the deacidification tower and located on the outer surface of the deacidification tower. And connecting frames are detachably mounted in the upper connecting base and the lower connecting base correspondingly, a filter screen is fixedly connected to the interior of the lower connecting frame, and an activated carbon gas filter screen is fixedly connected to the interior of the upper connecting frame. The two sliding plates on the two sides of the connecting frames are pinched, so that the two sliding plates slide towards the sides close to each other along the fixing rods, the springs are extruded to be compressed, then the limiting plates are driven to be disengaged from being connected with the limiting grooves in an inserted mode, and then the two connecting frames provided with the filter screens and the activated carbon gas filter screens can be detached and conveniently cleaned or replaced.

Description

Technical Field

[0001] This utility model relates to the field of tetrafluoroethane production technology, specifically to a multi-layer deacidification tower for tetrafluoroethane production. Background Technology

[0002] In the production of tetrafluoroethane, a deacidification process is typically required, which plays a crucial role. Firstly, the raw materials may contain acidic components, which can affect the reaction process and the purity of the product. Deacidification removes these acidic components, ensuring the reaction proceeds under optimal conditions, thereby improving the quality and purity of the product.

[0003] Deacidification towers used in tetrafluoroethane production typically have internal spray devices to allow acidic gases to come into contact with alkaline solutions, dissolving or adsorbing the acidic components into the solution. However, some spray devices cannot ensure complete contact between the solution and the gas, and the internal filters of the deacidification tower tend to become saturated after prolonged use, making replacement inconvenient and affecting subsequent filtration efficiency. Therefore, these methods do not meet current requirements. To address this, we propose a multi-layer deacidification tower for tetrafluoroethane production. Utility Model Content

[0004] The purpose of this invention is to provide a multi-layer deacidification tower for tetrafluoroethane production, in order to solve the problems mentioned in the background art. Deacidification towers for tetrafluoroethane production usually have spray devices installed inside to allow acidic gases to come into contact with alkaline solutions, and the acidic components are dissolved or adsorbed into the solution. However, some spray devices cannot ensure complete contact between the solution and the gas, and the filter devices inside the deacidification tower are prone to saturation after long-term use and are inconvenient to replace, thus affecting the effect of subsequent filtration.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a multi-layer deacidification tower for tetrafluoroethane production, comprising a deacidification tower, an inlet pipe connected through one side of the deacidification tower, an exhaust pipe connected through the top of the deacidification tower, connecting seats fixedly connected to the upper and lower ends of the inlet pipe and located on the outer surface of the deacidification tower, and connecting frames detachably installed inside the upper and lower connecting seats, a filter screen fixedly connected inside the lower connecting frame, and an activated carbon filter screen fixedly connected inside the upper connecting frame, two annular pipes fixedly installed between the upper part of the inlet pipe and the lower part of the activated carbon filter screen, a water tank provided on one side of the deacidification tower, a water pump connected to the upper end of the water tank, a conduit connected to the upper end of the water pump, and connecting pipes fixedly connected to the upper and lower ends of one side of the conduit, which are connected through the two annular pipes.

[0006] Preferably, the connecting frame is inserted into the interior of the connecting seat, and movable slots are provided on both sides of one end of the connecting frame. Fixed rods are fixedly connected inside the movable slots on both sides, and sliding plates extending through to the outside of the movable slots are slidably connected to the outer surfaces of the two fixed rods.

[0007] Preferably, springs are fixedly connected between the side of the two sliding plates that are close to each other and the inner wall of the movable groove, and the springs are wound around the outer surface of the fixed rod. Limiting plates are fixedly connected to the side of the two sliding plates that are close to each other.

[0008] Preferably, the limiting plate extends through the movable groove and extends to the outside of the connecting frame. Symmetrical limiting grooves are provided on both sides of the inner wall of the connecting seat. The end of the limiting plate extending through to the outside of the connecting frame is inserted into the corresponding limiting groove.

[0009] Preferably, sealing strips are fixedly connected to both the upper and lower ends of the connecting frame, and the outer surface of the sealing strips is in close contact with the inner wall of the connecting seat.

[0010] Preferably, a four-way pipe is connected through the interior of both the upper and lower annular pipes, and the two four-way pipes are staggered. Several nozzles are fixedly connected to the bottom ends of both the upper and lower annular pipes and the four-way pipes.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. In this invention, when tetrafluoroethane enters the deacidification tower through the inlet pipe, the water pump is activated to transport the solution inside the water tank to the interior of each annular pipe through the conduit and connecting pipe. Then, through the four-way pipes that run through each annular pipe, the solution is sprayed from each nozzle, thus coming into contact with the tetrafluoroethane gas. The staggered arrangement of the upper and lower four-way pipes allows the tetrafluoroethane gas to come into more thorough contact with the solution sprayed from the nozzles as it passes through the two annular pipes, thereby dissolving or adsorbing the acidic components into the solution. After the solution is filtered through the filter screen, it falls to the bottom of the deacidification tower and is discharged from the drain pipe. The tetrafluoroethane, after being sprayed, is discharged from the exhaust pipe after the acidic particulate impurities inside are adsorbed by the activated carbon filter screen.

[0013] 2. This utility model allows the two sliding plates on both sides of the connecting frame to slide along the fixed rod towards each other, compressing the spring and then disengaging the limiting plate from the limiting groove. This allows the two connecting frames equipped with the filter screen and activated carbon filter screen to be disassembled for easy cleaning or replacement. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a front sectional view of the entire utility model;

[0016] Figure 3 This is a top sectional view of the deacidification tower of this utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the annular tube of this utility model;

[0018] Figure 5 This utility model Figure 3 A schematic diagram of the structure at point A in the middle.

[0019] In the diagram: 1. Deacidification tower; 101. Inlet pipe; 102. Exhaust pipe; 2. Connecting seat; 201. Limiting groove; 3. Water tank; 4. Water pump; 5. Pipe; 6. Connecting pipe; 7. Ring pipe; 8. Four-way pipe; 9. Nozzle; 10. Connecting frame; 1001. Movable groove; 11. Filter screen; 12. Activated carbon filter screen; 13. Fixed rod; 14. Sliding plate; 15. Spring; 16. Limiting plate; 17. Sealing strip; 18. Drain pipe. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Please see Figures 1 to 5 This utility model provides an embodiment of a multi-layer deacidification tower for tetrafluoroethane production, comprising a deacidification tower 1, an inlet pipe 101 connected through one side of the deacidification tower 1, and an exhaust pipe 102 connected through the top of the deacidification tower 1. Connecting seats 2, which are connected to the interior of the deacidification tower 1, are fixedly connected to the upper and lower ends of the inlet pipe 101 on the outer surface of the deacidification tower 1. Connecting frames 10 are detachably installed inside both the upper and lower connecting seats 2. Sealing strips 17 are fixedly connected to the upper and lower ends of the connecting frames 10, and the outer surface of the sealing strips 17 is flush with the connecting seats 2. The inner wall is in close contact with the gas, and the sealing strip 17 is used to prevent gas from leaking without treatment. A filter screen 11 is fixedly connected inside the lower connecting frame 10, and an activated carbon filter screen 12 is fixedly connected inside the upper connecting frame 10. Two annular pipes 7 are fixedly installed between the upper part of the air inlet pipe 101 and the lower part of the activated carbon filter screen 12. A water tank 3 is provided on one side of the deacidification tower 1. A water pump 4 is connected to the upper end of the water tank 3. A conduit 5 is connected to the upper end of the water pump 4. Connecting pipes 6 that are connected to the two annular pipes 7 are fixedly connected to the upper and lower parts of one side of the conduit 5.

[0022] Both the upper and lower annular pipes are internally connected to four-way pipes 8, and the two four-way pipes 8 are staggered. Several nozzles 9 are fixedly connected to the bottom of the upper and lower annular pipes 7 and the four-way pipes 8. When tetrafluoroethane enters the deacidification tower 1 from the inlet pipe 101, the water pump 4 is started to transport the solution inside the water tank 3 to the interior of each annular pipe 7 through the conduit 5 and the connecting pipe 6. Then, through the four-way pipes 8 internally connected to each annular pipe 7, the solution is sprayed from each nozzle 9, thereby coming into contact with the tetrafluoroethane gas. The staggered arrangement of the upper and lower four-way pipes 8 allows the tetrafluoroethane gas to come into more thorough contact with the solution sprayed from the nozzles 9 when passing through the two annular pipes 7, thereby dissolving or adsorbing the acidic components into the solution.

[0023] After the acidic solution is filtered through the filter screen 11, it falls into the bottom of the deacidification tower 1 and is discharged from the drain pipe 18. The tetrafluoroethane, after being sprayed, is discharged from the exhaust pipe 102 after the acidic particulate impurities inside are adsorbed by the activated carbon filter screen 12.

[0024] The connecting frame 10 is inserted into the interior of the connecting seat 2. Movable grooves 1001 are provided on both sides of one end of the connecting frame 10. Fixed rods 13 are fixedly connected inside the movable grooves 1001 on both sides. Sliding plates 14 extending through to the outside of the movable grooves 1001 are slidably connected to the outer surfaces of the two fixed rods 13. Springs 15 are fixedly connected between the side of the two sliding plates 14 that is close to each other and the inner wall of the movable grooves 1001. The springs 15 are wrapped around the outer surfaces of the fixed rods 13. Limiting plates 16 are fixedly connected to the side of the two sliding plates 14 that is close to each other. The limiting plates 16 move through the movable grooves 1001 and extend to the outside of the connecting frame 10. Symmetrical limiting grooves 201 are provided on both sides of the inner wall of the connecting seat 2. The end of the limiting plate 16 extending through to the outside of the connecting frame 10 is inserted into the corresponding limiting groove 201.

[0025] By pinching the sliding plates 14 on both sides of the connecting frame 10, the two sliding plates 14 slide along the fixed rod 13 toward the side that is closer to each other, and compress the spring 15, and then drive the limiting plate 16 to disengage from the limiting groove 201. Then the two connecting frames 10 with the filter screen 11 and the activated carbon filter screen 12 can be disassembled for easy cleaning or replacement.

[0026] When the multi-layer deacidification tower for tetrafluoroethane production is in use, when tetrafluoroethane enters the interior of the deacidification tower 1 through the inlet pipe 101, the water pump 4 is started to transport the solution inside the water tank 3 through the conduit 5 and the connecting pipe 6 to the interior of each annular pipe 7. Then, through the four-way pipe 8 that runs through each annular pipe 7, the solution is sprayed from each nozzle 9, thereby contacting the tetrafluoroethane gas. The staggered arrangement of the upper and lower four-way pipes 8 allows the tetrafluoroethane gas to come into more thorough contact with the solution sprayed from the nozzle 9 when passing through the two annular pipes 7, so that the acidic components are dissolved or adsorbed into the solution. After the solution is filtered by the filter screen 11, it falls into the bottom of the deacidification tower 1 and is discharged from the drain pipe 18. The tetrafluoroethane after being sprayed is then discharged from the exhaust pipe 102 after the acidic particulate impurities inside are adsorbed by the activated carbon filter screen 12.

[0027] When the filter screen 11 and the activated carbon filter screen 12 are saturated with filtration and adsorption, by pinching the sliding plates 14 on both sides of the connecting frame 10, the two sliding plates 14 slide along the fixed rod 13 toward the side that is closer to each other, and compress the spring 15, and then drive the limiting plate 16 to disengage from the limiting groove 201. Then the two connecting frames 10 with the filter screen 11 and the activated carbon filter screen 12 can be disassembled for easy cleaning or replacement.

[0028] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A multi-layer deacidification tower for tetrafluoroethane production, comprising a deacidification tower (1), a gas inlet pipe (101) is connected through one side of the deacidification tower (1), and an exhaust pipe (102) is connected through the top end of the deacidification tower (1), characterized in that: The upper and lower ends of the air inlet pipe (101) are fixedly connected with connecting seats (2) penetratingly connected with the inside of the deacidification tower (1), the inside of the upper and lower connecting seats (2) is detachably provided with a connecting frame (10), the inside of the lower connecting frame (10) is fixedly connected with a filter screen (11), the inside of the upper connecting frame (10) is fixedly connected with an activated carbon filter screen (12), two annular pipes (7) are fixedly installed between the upper air inlet pipe (101) and the lower activated carbon filter screen (12), one side of the deacidification tower (1) is provided with a water tank (3), the upper end of the water tank (3) is connected with a water pump (4), the upper end of the water pump (4) is connected with a conduit (5), and the upper and lower sides of one side of the conduit (5) are fixedly connected with connecting pipes (6) penetratingly connected with the two annular pipes (7).

2. The multi-layer deacidification tower for producing tetrafluoroethane according to claim 1, characterized in that: The connecting frame (10) is inserted into the connecting seat (2), and the two sides of one end of the connecting frame (10) are provided with movable grooves (1001), and the inside of the movable grooves (1001) is fixedly connected with fixed rods (13).

3. The multi-layer deacidification tower for producing tetrafluoroethane according to claim 2, characterized in that: The two fixed rods (13) are slidingly connected with sliding plates (14) extending outside the movable grooves (1001) on the outer surfaces of the two fixed rods (13).

4. The multi-layer deacidification tower for producing tetrafluoroethane according to claim 3, characterized in that: The two sliding plates (14) are fixedly connected with limiting plates (16) on the sides away from each other.

5. The multi-layer deacidification tower for producing tetrafluoroethane according to claim 1, characterized in that: The limiting plate (16) movably penetrates the movable groove (1001) and extends to the outside of the connecting frame (10), the inside walls of the connecting seat (2) are provided with symmetrical limiting grooves (201) on the two sides, and one end of the limiting plate (16) extending to the outside of the connecting frame (10) is inserted into the corresponding limiting groove (201).

6. The multi-layer deacidification tower for producing tetrafluoroethane according to claim 1, characterized in that: The upper and lower ends of the connecting frame (10) are fixedly connected with sealing strips (17), and the outer surfaces of the sealing strips (17) are in contact with the inner walls of the connecting seat (2). The inside of the upper and lower annular pipes is penetratingly connected with four-way pipes (8), and the upper and lower four-way pipes (8) are staggered, and the bottom ends of the upper and lower annular pipes (7) and four-way pipes (8) are fixedly connected with a plurality of spray heads (9).

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