A drying device for difluoromonochloroethane finished product

Abstract

The utility model discloses a kind of drying devices for difluoro-monochloroethane finished product, including tank body, the top end one side of the tank body is provided with inlet pipe, the inner wall top end of the tank body is fixed with first drying tank and second drying tank symmetrically, the position of the tank body in the corresponding inlet pipe is detachably fixed with filter layer, the bottom end of the tank body other side is equipped with outlet pipe, the top end of the tank body is uniformly equipped with multiple support legs, the top end of first drying tank and second drying tank can be detachably equipped with maintenance cover by dismounting part. The utility model is through the filter layer set before shunting inlet pipe, can before difluoro-monochloroethane enters drying tank high efficiency intercepts solid particle, mechanical impurity etc. Pollutant possibly mixed in finished product, avoid the problem that impurity blocks drying medium pore, adheres in drying tank inner wall from source.

Description

Technical Field

[0001] This utility model relates to the field of fluorochemical technology, specifically to a drying device for difluorochloroethane. Background Technology

[0002] As a widely used fluorine-based chemical, the purity of difluorochloroethane is crucial to its performance. Moisture content is a core quality control indicator and must be reduced to extremely low levels through drying to meet the requirements of applications such as refrigerants and etching gases.

[0003] Existing drying devices for difluorochloroethane lack efficient pre-filtration structures or have cumbersome filter component disassembly, causing impurities to directly enter the drying tank and adhere to the adsorbent surface. This not only reduces the adsorbent's adsorption efficiency and saturation capacity for moisture but also shortens its lifespan, requiring frequent adsorbent replacement to maintain drying efficiency, increasing production costs and downtime. Existing devices mostly use single-tank drying, which requires a complete shutdown when the adsorbent is regenerated or replaced, affecting production continuity. Therefore, these devices do not meet current requirements. To address this, we propose a drying device for difluorochloroethane. Utility Model Content

[0004] The purpose of this invention is to provide a drying device for dichlorofluoroethane, which solves the problems mentioned in the background art. Existing drying devices for dichlorofluoroethane lack efficient pre-filtration structures or have complicated filter component disassembly, resulting in impurities directly entering the drying tank and adhering to the surface of the adsorbent. This not only reduces the adsorption efficiency and saturation capacity of the adsorbent but also shortens the adsorbent's service life, requiring frequent replacement of the adsorbent to maintain the drying effect, increasing production costs and downtime. Existing devices mostly use a single tank, and the single-tank drying mode requires a complete shutdown when the adsorbent is regenerated or replaced, affecting the continuity of production.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a drying device for dichlorofluoroethane, comprising a tank body, an air inlet pipe extending through one side of the top of the tank body, a first drying tank and a second drying tank symmetrically fixed to the top of the inner wall of the tank body, a filter layer detachably fixed inside the tank body corresponding to the position of the air inlet pipe, an air outlet pipe provided on the other side of the bottom of the tank body, and a plurality of support legs evenly provided at the top of the tank body, and a maintenance cover detachably provided at the top of both the first drying tank and the second drying tank via a disassembly component.

[0006] Preferably, the inlet pipe is connected to a first gas distribution pipe and a second gas distribution pipe. The first gas distribution pipe is connected through a first drying tank, and the second gas distribution pipe is connected through a second drying tank. A first gas outlet pipe is provided through the bottom end of the first drying tank, and a second gas outlet pipe is provided through the bottom end of the second drying tank. The first and second gas outlet pipes are connected to an outlet pipe. A moisture analyzer is provided on the inner wall of the outlet pipe, and the moisture analyzer detects the moisture content of the discharged dichlorofluoroethane gas in real time.

[0007] Preferably, a T-shaped groove is provided through one side of the top of the tank corresponding to the position of the air inlet pipe, and T-shaped blocks are fixed at both ends of the filter layer. The T-shaped blocks are slidably connected in the T-shaped groove, and the filter layer is detachably fixed to the T-shaped groove of the tank through the T-shaped blocks.

[0008] Preferably, the top outer walls of both the first and second drying tanks are provided with external threads of the disassembly component, and the tops of both the first and second drying tanks are provided with a limiting ring and a rubber sealing ring for the disassembly component. The diameter of the rubber sealing ring is larger than that of the limiting ring. The inner wall of the inspection cover is provided with internal threads of the disassembly component, and the top of the inner wall of the inspection cover is provided with a limiting groove for the disassembly component. The disassembly component includes external threads, a limiting ring, a rubber sealing ring, internal threads, and a limiting groove.

[0009] Preferably, the limiting rings of the first and second drying tanks are inserted into the limiting grooves of the inspection cover, the internal thread of the inspection cover is threaded to the external threads of the first and second drying tanks, and the rubber sealing rings of the first and second drying tanks are tightly fitted to the inner wall of the inspection cover.

[0010] Preferably, both the first and second air distribution pipes are equipped with flow control valves, and both the first and second air outlet pipes are equipped with one-way valves.

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

[0012] 1. This utility model, through the filter layer set before the air inlet pipe diversion, can effectively intercept solid particles, mechanical impurities and other contaminants that may be mixed in the finished product before dichlorofluoroethane enters the drying tank. It avoids the problem of impurities clogging the pores of the drying medium and adhering to the inner wall of the drying tank from the source. It not only ensures full contact between the desiccant and the gas and maintains stable drying efficiency, but also reduces the wear of impurities on the internal components of the tank and extends the overall service life of the equipment. The detachable feature of the filter layer makes it easy to disassemble, clean or replace regularly without disassembling the entire air inlet system, reducing maintenance difficulty and ensuring continuous and stable filtration effect.

[0013] 2. This utility model forms a precise control logic through the flow control valves of the first and second gas distribution pipes and the corresponding one-way valves of the first and second gas outlet pipes. It can achieve seamless connection between the alternating operation of the two tanks and independent maintenance. When the first drying tank needs to replace the desiccant or for maintenance, its inlet pipe flow control valve is closed, and the one-way valve automatically blocks the reverse airflow. At the same time, the flow control valve of the second drying tank is opened, and the finished gas can be immediately switched to the second drying tank for drying. The reverse is also true. This solves the pain point that traditional single-tank drying devices must be shut down during maintenance, ensuring the continuous operation of the dichlorofluoroethane product drying process, significantly improving production efficiency, and is especially suitable for the needs of continuous production in the chemical industry.

[0014] 3. This utility model allows the inspection covers on the top of the first and second drying tanks to be removed via a disassembly device. The convenient disassembly and assembly structure and reliable sealing design ensure the airtightness of the tanks during operation and allow operators to quickly open the tanks for maintenance. Combined with the dual-tank alternating operation mechanism, maintenance personnel can directly replace the desiccant, clean the inner wall, or inspect the components of the target tank through the inspection cover while the other tank is working normally. No special tools are required to complete the operation, thus shortening maintenance time. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a top view of the entire utility model;

[0017] Figure 3 This is a bottom view of the entire utility model.

[0018] In the diagram: 1. Tank body; 2. Inlet pipe; 3. Outlet pipe; 4. Support leg; 5. Filter layer; 6. T-block; 7. T-slot; 8. Disassembled parts; 9. Inspection cover; 10. First gas distribution pipe; 11. First drying tank; 12. Second gas distribution pipe; 13. Second drying tank; 14. External thread; 15. Limiting ring; 16. Rubber sealing ring; 17. Internal thread; 18. Limiting groove; 19. First outlet pipe; 20. Second outlet pipe; 21. One-way valve; 22. Flow control valve; 23. Moisture analyzer. Detailed Implementation

[0019] 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.

[0020] Please see Figures 1 to 3The present invention provides an embodiment of a drying device for a finished product of difluorochloroethane, comprising a tank 1, an air inlet pipe 2 extending through one side of the top of the tank 1, a first drying tank 11 and a second drying tank 13 symmetrically fixed at the top of the inner wall of the tank 1, a filter layer 5 detachably fixed inside the tank 1 at a position corresponding to the air inlet pipe 2, a T-shaped groove 7 extending through one side of the top of the tank 1 at a position corresponding to the air inlet pipe 2, and T-shaped blocks 6 fixed at both ends of the filter layer 5, the T-shaped blocks 6 being slidably connected in the T-shaped groove 7, and the filter layer 5 being detachably fixed to the T-shaped groove 7 of the tank 1 through the T-shaped blocks 6.

[0021] A vent pipe 3 is provided on the other side of the bottom end of the tank body 1. Multiple support legs 4 are evenly provided on the top end of the tank body 1. The top end of the first drying tank 11 and the second drying tank 13 are both provided with a maintenance cover 9 that can be detached through the disassembly component 8. The outer wall of the top end of the first drying tank 11 and the second drying tank 13 is provided with an external thread 14 of the disassembly component 8. The top end of the first drying tank 11 and the second drying tank 13 is provided with a limiting ring 15 and a rubber sealing ring 16 of the disassembly component 8. The diameter of the rubber sealing ring 16 is larger than that of the limiting ring 15. The inner wall of the maintenance cover 9 is provided with an internal thread 17 of the disassembly component 8. The top end of the inner wall of the maintenance cover 9 is provided with a limiting groove 18 of the disassembly component 8. The disassembly component 8 includes an external thread 14, a limiting ring 15, a rubber sealing ring 16, an internal thread 17, and a limiting groove 18.

[0022] The limiting rings 15 of the first drying tank 11 and the second drying tank 13 are inserted into the limiting grooves 18 of the inspection cover 9. The internal thread 17 of the inspection cover 9 is threaded to the external thread 14 of the first drying tank 11 and the second drying tank 13. The rubber sealing rings 16 of the first drying tank 11 and the second drying tank 13 are tightly fitted to the inner wall of the inspection cover 9.

[0023] The inlet pipe 2 is connected to the first gas distribution pipe 10 and the second gas distribution pipe 12. The first gas distribution pipe 10 is connected to the first drying tank 11, and the second gas distribution pipe 12 is connected to the second drying tank 13. The bottom end of the first drying tank 11 is provided with the first gas outlet pipe 19 of the tank body 1, and the bottom end of the second drying tank 13 is provided with the second gas outlet pipe 20 of the tank body 1. The first gas outlet pipe 19 and the second gas outlet pipe 20 are connected to the gas outlet pipe 3. The inner wall of the gas outlet pipe 3 is provided with a moisture analyzer 23, which detects the moisture content of the discharged dichlorofluoroethane gas in real time.

[0024] Both the first air distribution pipe 10 and the second air distribution pipe 12 are equipped with flow control valves 22, and both the first air outlet pipe 19 and the second air outlet pipe 20 are equipped with check valves 21.

[0025] Dichlorofluoroethane enters through the inlet pipe 2 and is efficiently filtered by the filter layer 5 to remove any solid particles, mechanical impurities, or other contaminants that may be mixed into the finished product. It is then split into two parts through the first gas splitter 10 and the second gas splitter 12, and dried in the first drying tank 11 and the second drying tank 13. After passing through the first outlet pipe 19 and the second outlet pipe 20, the gas merges in the outlet pipe 3. The moisture content of the discharged dichlorofluoroethane gas is detected in real time by the moisture analyzer 23. When the first drying tank 11 needs to be replaced with desiccant or is under maintenance, its inlet pipe flow control valve 22 is closed, and the one-way valve 21 automatically blocks the reverse airflow. At the same time, the flow control valve 22 of the second drying tank 13 is opened, and the finished product gas can be immediately switched to the second drying tank 13 for drying.

[0026] 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 drying apparatus for difluorochloroethane, comprising a tank (1), characterized in that: An air inlet pipe (2) is provided through one side of the top of the tank (1). A first drying tank (11) and a second drying tank (13) are symmetrically fixed at the top of the inner wall of the tank (1). A filter layer (5) is detachably fixed inside the tank (1) at the position corresponding to the air inlet pipe (2). An air outlet pipe (3) is provided on the other side of the bottom of the tank (1). Multiple support legs (4) are evenly provided at the top of the tank (1). The top of the first drying tank (11) and the second drying tank (13) are both detachably provided with inspection covers (9) through disassembly parts (8).

2. The drying apparatus for difluorochloroethane product according to claim 1, characterized in that: The inlet pipe (2) is connected to the first gas distribution pipe (10) and the second gas distribution pipe (12). The first gas distribution pipe (10) is connected to the first drying tank (11). The second gas distribution pipe (12) is connected to the second drying tank (13). The bottom end of the first drying tank (11) is connected to the first outlet pipe (19) of the tank body (1). The bottom end of the second drying tank (13) is connected to the second outlet pipe (20) of the tank body (1). The first outlet pipe (19) and the second outlet pipe (20) are connected to the outlet pipe (3). The inner wall of the outlet pipe (3) is equipped with a moisture analyzer (23). The moisture analyzer (23) detects the moisture content of the discharged dichlorofluoroethane gas in real time.

3. The drying apparatus for difluorochloroethane product according to claim 1, characterized in that: A T-shaped groove (7) is provided through one side of the top of the tank (1) corresponding to the position of the air inlet pipe (2). T-shaped blocks (6) are fixed at both ends of the filter layer (5). The T-shaped blocks (6) are slidably connected in the T-shaped groove (7). The filter layer (5) can be detachably fixed to the T-shaped groove (7) of the tank (1) through the T-shaped blocks (6).

4. A drying apparatus for difluorochloroethane product according to claim 1, characterized in that: The top outer wall of the first drying tank (11) and the second drying tank (13) is provided with the external thread (14) of the disassembly component (8). The top of the first drying tank (11) and the second drying tank (13) is provided with the limiting ring (15) and the rubber sealing ring (16) of the disassembly component (8). The diameter of the rubber sealing ring (16) is larger than that of the limiting ring (15). The inner wall of the inspection cover (9) is provided with the internal thread (17) of the disassembly component (8). The top of the inner wall of the inspection cover (9) is provided with the limiting groove (18) of the disassembly component (8). The disassembly component (8) includes the external thread (14), the limiting ring (15), the rubber sealing ring (16), the internal thread (17), and the limiting groove (18).

5. A drying apparatus for difluorochloroethane product according to claim 4, characterized in that: The limiting rings (15) of the first drying tank (11) and the second drying tank (13) are inserted into the limiting groove (18) of the inspection cover (9). The internal thread (17) of the inspection cover (9) is threaded to the external thread (14) of the first drying tank (11) and the second drying tank (13). The rubber sealing rings (16) of the first drying tank (11) and the second drying tank (13) are tightly fitted to the inner wall of the inspection cover (9).

6. A drying apparatus for difluorochloroethane product according to claim 2, characterized in that: The first gas distribution pipe (10) and the second gas distribution pipe (12) are each equipped with a flow control valve (22), and the first gas outlet pipe (19) and the second gas outlet pipe (20) are each equipped with a one-way valve (21).

Images