An extraction apparatus for pentafluoroethane
By installing a filtration and stirring mechanism in the pentafluoroethane extraction unit, the problem of impurities clogging subsequent equipment was solved, achieving impurity interception and improved extraction efficiency, thus ensuring product purity and production stability.
Patent Information
- Application Number
- CN202522222879.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-21
- Publication Date
- 2026-11-06
- Estimated Expiration
- 2035-10-21
AI Technical Summary
The existing pentafluoroethane extraction unit does not perform filtration treatment at the discharge point, which causes tiny solid impurities to enter the subsequent distillation unit and adsorption column, clogging the equipment, affecting product purity and safety, and reducing production efficiency.
The extraction device is equipped with a filtration mechanism and a stirring mechanism. The filtration mechanism uses a vibrating motor to intercept impurities through the cooperation of a connecting rod, damper, telescopic spring, connecting plate and filter frame. The stirring mechanism breaks up the phase interface layering and increases the contact area through the cooperation of a servo motor, reducer, gear, rotating shaft and stirring shaft.
It effectively intercepts impurities, prevents equipment blockage, extends adsorbent life, improves product purity and production efficiency, and optimizes the stability and safety of equipment operation.
Smart Images
Figure CN224937682U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pentafluoroethane extraction technology, and in particular to an extraction device for pentafluoroethane. Background Technology
[0002] In the production and purification process of pentafluoroethane, the extraction unit is a key piece of equipment for separating and purifying pentafluoroethane from the synthesis reaction liquid or mixed gas phase. It achieves the separation of pentafluoroethane from impurities such as HF and unreacted raw materials through the selective dissolution characteristics of solvents, which directly affects the purity of the final product and the utilization rate of raw materials.
[0003] Current mainstream pentafluoroethane extraction units, in order to simplify the process or reduce equipment costs, do not filter the pentafluoroethane during the extraction feed. During extraction, tiny solid impurities carried by the feed, such as metal fragments from equipment corrosion, dust from the feed, and trace degradation residues that may occur during solvent recycling, enter the subsequent distillation unit along with the pentafluoroethane-containing extract phase. Because these impurities are not filtered at the discharge stage, they easily clog the packing or trays in the distillation column, leading to a decrease in distillation mass transfer efficiency. This not only increases the frequency of column cleaning and interrupts the production process but may also cause localized temperature anomalies due to impurity accumulation, affecting the pentafluoroethane extraction process. The separation of fluoroethane from the solvent reduces product yield. Furthermore, if impurities enter subsequent purification stages (such as adsorption columns) with the extraction phase, they will adhere to the surface of the adsorbent (such as molecular sieves and activated alumina), clogging the pores of the adsorbent, shortening its lifespan, and increasing the cost of consumable replacement. More importantly, some fine impurities may penetrate the adsorption column and mix into the final pentafluoroethane product, causing the product purity to fail to meet the industrial application standard of over 99.9%. In some cases, the presence of impurities may even clog the pipelines of downstream equipment, posing a safety hazard. Therefore, this invention proposes an extraction device for pentafluoroethane to solve the above problems. Utility Model Content
[0004] To address the aforementioned problems, this invention proposes an extraction device for pentafluoroethane, which solves the problem in the prior art that it is inconvenient to filter pentafluoroethane during the extraction process.
[0005] To achieve the purpose of this utility model, the utility model is implemented through the following technical solution: an extraction device for pentafluoroethane, including a mounting plate, support legs installed at the four corners of the bottom end of the mounting plate, an extraction tank installed at the top end of the mounting plate, a cover plate installed at the top end of the extraction tank, a pressure gauge installed on one side of the top end of the cover plate, a feeding port installed on the other side of the top end of the cover plate, a discharge port installed at the bottom end of the extraction tank, a filtering mechanism provided below the discharge port, and a stirring mechanism provided inside the extraction tank;
[0006] The filtration mechanism includes a connecting rod, a damper, a telescopic spring, a connecting plate, a filter frame, and a vibration motor. The connecting rod is installed at the bottom of the mounting plate, and a damper is installed at the bottom of the connecting rod. A telescopic spring is provided on the outer wall of the damper. A connecting plate is installed at the bottom of the damper, and a filter frame is installed on the inner side of the connecting plate. A vibration motor is installed at one end of the filter frame.
[0007] A further improvement is that two connecting rods are provided at the bottom of the mounting plate, and the two connecting rods are symmetrically distributed about the central axis of the discharge port.
[0008] A further improvement is that the filter frame is located directly below the feed inlet, and the filter frame is designed to be inclined.
[0009] A further improvement is made in that: the stirring mechanism includes a servo motor, a reducer, a drive gear, a driven gear, a rotating shaft, a mounting block, and a stirring shaft. The servo motor is mounted above the cover plate, and a reducer is mounted at one end of the servo motor. A drive gear is mounted at the bottom end of the cover plate, and the bottom end of the reducer is connected to the top end of the drive gear. Driven gears mesh on both sides of the drive gear, and a rotating shaft is mounted at the bottom end of the driven gear. A mounting block is provided on the outer side wall of the rotating shaft, and a stirring shaft is mounted on the outer side wall of the mounting block.
[0010] A further improvement is that two rotating shafts are provided inside the extraction tank, and multiple stirring shafts are installed on the outside of the two rotating shafts.
[0011] A further improvement is that the stirring shafts are staggered on the outer side wall of the rotating shaft.
[0012] The beneficial effects of this utility model are as follows: By setting a filter mechanism below the feed inlet, and utilizing the cooperation between the connecting rod, damper, telescopic spring, connecting plate, filter frame, and vibration motor of the filter mechanism, metal fragments, dust, and other impurities in the extraction phase can be directly intercepted, preventing them from entering the downstream distillation column and clogging the packing. This reduces the frequency of equipment cleaning and downtime, facilitates disassembly, cleaning, or replacement of the filter screen, and reduces the burden on subsequent adsorption columns by filtering impurities in advance, extending the adsorbent life, ensuring that the final pentafluoroethane product meets the purity standards, and optimizing the overall operating efficiency and stability of the device; The extraction tank is equipped with a stirring mechanism. By utilizing the interaction between the servo motor, reducer, drive gear, driven gear, rotating shaft, mounting block and stirring shaft of the stirring mechanism, the phase interface stratification between pentafluoroethane raw material and extraction solvent can be broken, the raw material is dispersed into micro bubbles or droplets, the contact area between the two phases is greatly increased, the dissolution and mass transfer of pentafluoroethane into the solvent is accelerated, the extraction equilibrium time is shortened, and the material circulation in the tank can be promoted to avoid local uneven concentration or dead zones, ensuring stable extraction efficiency. In addition, stirring can reduce the volatilization loss of pentafluoroethane caused by static residence. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0014] Figure 2 This is a schematic diagram of the overall structure of the stirring mechanism of this utility model;
[0015] Figure 3 This is a schematic diagram of the overall structure of the filtration mechanism of this utility model.
[0016] The components include: 1. Mounting plate; 2. Support leg; 3. Extraction tank; 4. Cover plate; 5. Pressure gauge; 6. Feed port; 7. Discharge port; 8. Connecting rod; 9. Damper; 10. Telescopic spring; 11. Connecting plate; 12. Filter frame; 13. Vibration motor; 14. Servo motor; 15. Reducer; 16. Drive gear; 17. Driven gear; 18. Rotating shaft; 19. Mounting block; 20. Stirring shaft. Detailed Implementation
[0017] To deepen the understanding of this utility model, the following detailed description will be provided in conjunction with embodiments. These embodiments are only used to explain this utility model and do not constitute a limitation on the scope of protection of this utility model.
[0018] according to Figure 1 , 2 As shown in Figure 3, this embodiment proposes an extraction device for pentafluoroethane, including a mounting plate 1. Support legs 2 are installed at the four corners of the bottom of the mounting plate 1. An extraction tank 3 is installed at the top of the mounting plate 1. A cover plate 4 is installed at the top of the extraction tank 3. A pressure gauge 5 is installed on one side of the top of the cover plate 4. A feed port 6 is installed on the other side of the top of the cover plate 4. A discharge port 7 is installed at the bottom of the extraction tank 3. A filter mechanism is provided below the discharge port 7. A stirring mechanism is provided inside the extraction tank 3.
[0019] The filtration mechanism includes a connecting rod 8, a damper 9, a telescopic spring 10, a connecting plate 11, a filter frame 12, and a vibration motor 13. The connecting rod 8 is mounted on the bottom end of the mounting plate 1. A damper 9 is mounted on the bottom end of the connecting rod 8, and a telescopic spring 10 is installed on the outer wall of the damper 9. A connecting plate 11 is mounted on the bottom end of the damper 9, and a filter frame 12 is mounted on the inner side of the connecting plate 11. A vibration motor 13 is mounted on one end of the filter frame 12. Two connecting rods 8 are located at the bottom end of the mounting plate 1, and the two connecting rods 8 are symmetrically distributed about the central axis of the discharge port 7. The filter frame 12 is located directly below the discharge port 7 and is designed with an inclination. During use, the material is discharged through the feed port 7. At this time, the extract is filtered through the inclined filter frame 12. The vibration motor 13 is started, and with the cooperation of the damper 9 and the extension spring 10, the filter frame 12 is shaken, which improves the filtration effect of the filter frame 12 and makes it less prone to clogging. It can directly intercept metal debris, dust and other impurities in the extract phase, preventing them from entering the downstream distillation column and clogging the packing. This reduces the frequency of equipment cleaning and downtime, facilitates disassembly, cleaning or replacement of the filter screen, and removes impurities in advance, which can reduce the burden on the subsequent adsorption column, extend the life of the adsorbent, ensure that the purity of the final pentafluoroethane product meets the standard, and optimize the overall operating efficiency and stability of the unit.
[0020] The stirring mechanism includes a servo motor 14, a reducer 15, a drive gear 16, a driven gear 17, a rotating shaft 18, a mounting block 19, and a stirring shaft 20. The servo motor 14 is mounted above the cover plate 4. The reducer 15 is mounted on one end of the servo motor 14. The drive gear 16 is mounted on the bottom end of the cover plate 4. The bottom end of the reducer 15 is connected to the top end of the drive gear 16. Driven gears 17 mesh on both sides of the drive gear 16. The rotating shaft 18 is mounted on the bottom end of the driven gear 17. The mounting block 19 is provided on the outer wall of the rotating shaft 18. The stirring shaft 20 is mounted on the outer wall of the mounting block 19. There are two rotating shafts 18 inside the extraction tank 3. Multiple stirring shafts 20 are mounted on the outer side of the two rotating shafts 18. The 0s are staggered on the outer wall of the rotating shaft 18. In use, the servo motor 14 is started to drive the reducer 15 to rotate, which in turn drives the drive gear 16 to rotate. Since the drive gear 16 and the driven gear 17 mesh with each other, the driven gear 17 drives the two rotating shafts 18 to rotate, which in turn drives the stirring shaft 20 to rotate, thus stirring the pentafluoroethane material. This can break the phase interface stratification between the pentafluoroethane raw material and the extraction solvent, disperse the raw material into tiny bubbles or droplets, greatly increase the contact area between the two phases, accelerate the dissolution and mass transfer of pentafluoroethane into the solvent, shorten the extraction equilibrium time, and at the same time promote the circulation of materials in the tank, avoid local uneven concentration or dead zones, and ensure stable extraction efficiency. In addition, stirring can reduce the volatilization loss of pentafluoroethane caused by static residence.
[0021] Working principle: The operator first pours pentafluoroethane raw material into the extraction tank 3, then closes the cover plate 4. The extraction tank 3 is used to extract pentafluoroethane. At this time, the servo motor 14 is started to drive the reducer 15 to rotate, which in turn drives the drive gear 16 to rotate. Since the drive gear 16 and the driven gear 17 mesh with each other, the driven gear 17 drives the two rotating shafts 18 to rotate, which in turn drives the stirring shaft 20 to rotate, thus stirring the pentafluoroethane material. After the extraction is completed, the material is discharged through the discharge port 7. The extract is then filtered through the inclined filter frame 12. At this time, the vibration motor 13 is started. With the cooperation of the damper 9 and the telescopic spring 10, the filter frame 12 is driven to vibrate, which makes the filtration effect of the filter frame 12 better and makes the filter frame 12 less prone to clogging during filtration.
[0022] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. An extraction apparatus for pentafluoroethane, comprising a mounting plate (1), characterized in that: Support legs (2) are installed at the four corners of the bottom of the mounting plate (1). An extraction tank (3) is installed at the top of the mounting plate (1). A cover plate (4) is installed at the top of the extraction tank (3). A pressure gauge (5) is installed on one side of the top of the cover plate (4). A feeding port (6) is installed on the other side of the top of the cover plate (4). A discharge port (7) is installed at the bottom of the extraction tank (3). A filtration mechanism is provided below the discharge port (7). A stirring mechanism is provided inside the extraction tank (3). The filtration mechanism includes a connecting rod (8), a damper (9), a telescopic spring (10), a connecting plate (11), a filter frame (12), and a vibration motor (13). The connecting rod (8) is installed at the bottom of the mounting plate (1). The damper (9) is installed at the bottom of the connecting rod (8). The telescopic spring (10) is provided on the outer side of the damper (9). The connecting plate (11) is installed at the bottom of the damper (9). The filter frame (12) is installed on the inner side of the connecting plate (11). The vibration motor (13) is installed at one end of the filter frame (12).
2. The extraction apparatus for pentafluoroethane according to claim 1, characterized in that: Two connecting rods (8) are provided at the bottom of the mounting plate (1), and the two connecting rods (8) are symmetrically distributed about the central axis of the discharge port (7).
3. The extraction apparatus for pentafluoroethane according to claim 2, characterized in that: The filter frame (12) is located directly below the feed inlet (7), and the filter frame (12) is designed to be inclined.
4. The extraction apparatus for pentafluoroethane according to claim 1, characterized in that: The stirring mechanism includes a servo motor (14), a reducer (15), a drive gear (16), a driven gear (17), a rotating shaft (18), a mounting block (19), and a stirring shaft (20). The servo motor (14) is mounted on top of the cover plate (4). The reducer (15) is mounted on one end of the servo motor (14). The drive gear (16) is mounted on the bottom end of the cover plate (4). The bottom end of the reducer (15) is connected to the top end of the drive gear (16). The driven gear (17) meshes on both sides of the drive gear (16). The rotating shaft (18) is mounted on the bottom end of the driven gear (17). The mounting block (19) is provided on the outer side wall of the rotating shaft (18). The stirring shaft (20) is mounted on the outer side wall of the mounting block (19).
5. The extraction apparatus for pentafluoroethane according to claim 4, characterized in that: Two of the rotating shafts (18) are provided inside the extraction tank (3), and multiple stirring shafts (20) are installed on the outside of the two rotating shafts (18).
6. The extraction apparatus for pentafluoroethane according to claim 5, characterized in that: The two sets of stirring shafts (20) are staggered on the outer side wall of the rotating shaft (18).