Preparation device of trifluoroacetyl fluoride

Abstract

The utility model discloses a preparation device of trifluoroacetyl fluoride, and relates to the technical field of preparation of trifluoroacetyl fluoride, the preparation device comprises a reaction box, the reaction box is fixedly installed inside a storage outer box body, a rotating shaft is rotatably installed inside the reaction box through a bearing, the device can play a role in storing products by installing the storage outer box body, and the reaction box can be used for storing the trifluoroacetyl fluoride. Meanwhile, the storage outer box body further has a certain heat preservation effect, excessive fluctuation of the reaction temperature in the device is avoided, trifluoroacetyl fluoride gas generated in the device can enter the storage outer box body by installing the connecting guide pipe, trifluoroacetyl fluoride is temporarily stored, the stability of the air pressure in the reaction box is guaranteed, and the service life of the reaction box is prolonged. Meanwhile, part of trifluoroacetyl fluoride produced in the reaction box is taken out, it is guaranteed that reaction products are not too many, then it is guaranteed that the reaction is rapidly conducted, and the practicability of the device is enhanced.

Description

Technical Field

[0001] This utility model relates to the field of preparation technology of trifluoroacetyl fluoride, specifically to a preparation apparatus for trifluoroacetyl fluoride. Background Technology

[0002] Trifluoroacetyl fluoride is a toxic gas that is highly irritating to the respiratory tract, skin, and eyes. Strict protective measures are required during use and storage, such as operating in a well-ventilated environment and requiring personnel to wear respirators, protective gloves, and goggles. In the event of a leak, personnel should be evacuated immediately, and appropriate methods should be used to handle the situation, such as neutralization with an alkaline solution. Trifluoroacetyl fluoride is generally prepared by reacting trifluoroacetic anhydride with hydrogen fluoride, the reaction being (CF3CO)2O + 2HF → 2CF3CFO + H2O. In this reaction, the acyl group (CF3CO-) in trifluoroacetic anhydride undergoes a nucleophilic substitution reaction with the fluoride ion in hydrogen fluoride, producing trifluoroacetyl fluoride and water. In the post-reaction processing stage, water and trifluoroacetyl fluoride are separated using appropriate separation and purification methods, such as distillation, taking advantage of the difference in boiling points between trifluoroacetyl fluoride and water to obtain a relatively pure trifluoroacetyl fluoride product.

[0003] However, existing methods for preparing trifluoroacetyl fluoride typically involve a closed reaction vessel to prevent the leakage of toxic gases such as hydrogen fluoride. As trifluoroacetyl fluoride and water are continuously produced, the amount of trifluoroacetyl fluoride and water inside the vessel increases, which gradually reduces the efficiency of the reaction and affects the production efficiency of trifluoroacetyl fluoride. Therefore, this method does not meet the current requirements. To address this, we propose a device for preparing trifluoroacetyl fluoride.

[0004] Therefore, a hexafluoropropylene oxidation device is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a preparation apparatus for trifluoroacetyl fluoride, in order to solve the problem mentioned in the background art that the preparation of trifluoroacetyl fluoride is usually carried out in a closed reaction vessel to ensure that toxic and harmful gases such as hydrogen fluoride will not leak. As trifluoroacetyl fluoride and water are continuously produced, the amount of trifluoroacetyl fluoride and water inside the vessel increases, which leads to a gradual decrease in the efficiency of the reaction and thus affects the production efficiency of trifluoroacetyl fluoride.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a preparation apparatus for trifluoroacetyl fluoride, comprising a storage outer casing:

[0007] A reaction chamber is fixedly installed inside the storage outer box. A rotating shaft is rotatably installed inside the reaction chamber via bearings. A mixing disc is fixedly installed outside the rotating shaft. Several liquid discharge holes are arranged in a ring around the outside of the mixing disc. Stirring shafts are welded to the lower ends of both sides of the rotating shaft.

[0008] A connecting conduit is fixedly installed on one side of the upper end of the reaction tank. One end of the connecting conduit is welded to the outer storage box. A one-way solenoid valve is provided on the outside of the connecting conduit. A heating plate is fixedly installed on the inside of the outer storage box. A heat insulation pad is fixedly installed inside the outer storage box.

[0009] Preferably, a drive motor is fixedly installed at the upper end of the reaction chamber, and the drive motor is connected to the rotating shaft via a coupling.

[0010] Preferably, a cleaning fluid injection pipe is installed on the other side of the upper surface of the reaction tank, and the cleaning fluid injection pipe is welded to the reaction tank.

[0011] Preferably, a feed pipe is installed at the rear end of the upper surface of the reaction chamber, and the feed pipe is welded to the reaction chamber.

[0012] Preferably, a support leg is installed at the lower end of the reaction chamber, and the support leg is welded to the reaction chamber.

[0013] Preferably, a connecting ring is installed on the outside of the support leg, and the connecting ring is welded to the support leg.

[0014] Preferably, a control box is installed on the front end of the storage outer box, and the control box is fixedly connected to the storage outer box.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This utility model can temporarily store the product by installing a storage outer box. At the same time, the storage outer box also has a certain heat preservation function to avoid excessive fluctuations in the internal reaction temperature of the device. The installation of connecting pipes allows the trifluoroacetyl fluoride gas generated inside the device to enter the storage outer box for temporary storage of the trifluoroacetyl fluoride, ensuring the stability of the gas pressure inside the reaction chamber. At the same time, a portion of the trifluoroacetyl fluoride produced inside the reaction chamber can be removed to ensure that the reaction product is not excessive, thereby ensuring the rapid progress of the reaction and enhancing the practicality of the device.

[0017] 2. By installing a mixing tray, this utility model allows materials to fall into the mixing tray under the action of gravity when they are added into the device. When the stirring shaft drives the mixing tray to rotate, the materials fly out through the spit holes on the outside of the mixing tray, and then collide with the upper part of the reaction tank, so that the materials are initially mixed, making the mixing more efficient and enhancing the mixing capacity of the device. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0019] Figure 1 This is a three-dimensional perspective view of an apparatus for preparing trifluoroacetyl fluoride according to the present invention;

[0020] Figure 2 This is a schematic diagram of the internal structure of a preparation apparatus for trifluoroacetyl fluoride according to the present invention;

[0021] Figure 3 This is a schematic diagram of the structure of the storage outer box of this utility model;

[0022] Figure 4 This diagram shows the connection relationship between the rotating shaft, the mixing disc, and the stirring shaft of this utility model.

[0023] In the diagram: 1. Storage outer casing; 2. Connecting conduit; 3. Cleaning fluid filling pipe; 4. Feed pipe; 5. Drive motor; 6. Control box; 7. Support leg; 8. Connecting ring; 9. Reaction chamber; 10. Rotating shaft; 11. Mixing tray; 12. Stirring shaft; 13. Heating plate; 14. Heat insulation pad; 15. Fluid discharge port. Detailed Implementation

[0024] 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.

[0025] Please see Figure 1-4 One embodiment of this utility model provides: a preparation apparatus for trifluoroacetyl fluoride, comprising a storage outer casing 1:

[0026] The reaction chamber 9 is fixedly installed inside the storage outer box 1. The storage outer box 1 serves to store the product and also has a certain heat preservation function to prevent excessive fluctuations in the internal reaction temperature. Inside the reaction chamber 9, a rotating shaft 10 is rotatably installed via bearings. A mixing plate 11 is fixedly installed on the outside of the rotating shaft 10. When the material is added to the device, it falls into the mixing plate 11 under the action of gravity. When the stirring shaft 12 drives the mixing plate 11 to rotate, the material flies out through the spit holes 15 on the outside of the mixing plate 11, and then impacts the upper part of the reaction chamber 9, so as to initially mix the material and make the mixing more efficient and enhance the mixing capacity of the device. The mixing plate 11 has several spit holes 15 in a ring array on the outside. The stirring shaft 12 is welded to the lower ends of both sides of the rotating shaft 10.

[0027] Connecting conduit 2 is fixedly installed on one side of the upper end of reaction chamber 9. Installing connecting conduit 2 allows the trifluoroacetyl fluoride gas generated inside the device to enter the storage outer box 1 for temporary storage of trifluoroacetyl fluoride, ensuring the stability of the gas pressure inside reaction chamber 9. At the same time, a portion of the trifluoroacetyl fluoride produced inside reaction chamber 9 is removed to ensure that the reaction product is not excessive, thereby ensuring the rapid progress of the reaction and enhancing the practicality of the device. One end of connecting conduit 2 is welded to storage outer box 1. A one-way solenoid valve is installed on the outside of connecting conduit 2. A heating plate 13 is fixedly installed on the inside of storage outer box 1, and a heat insulation pad 14 is fixedly installed inside storage outer box 1.

[0028] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 A drive motor 5 is fixedly installed at the upper end of the reaction chamber 9. The drive motor 5 is connected to the rotating shaft 10 through a coupling. A cleaning fluid filling pipe 3 is installed on the other side of the upper surface of the reaction chamber 9. The cleaning fluid filling pipe 3 can extract the air inside the device to ensure that the inside of the device is clean. The cleaning fluid filling pipe 3 is welded to the reaction chamber 9. A feed pipe 4 is installed at the rear end of the upper surface of the reaction chamber 9. The feed pipe 4 is welded to the reaction chamber 9. A support leg 7 is installed at the lower end of the reaction chamber 9. The support leg 7 is welded to the reaction chamber 9. A connecting ring 8 is installed on the outside of the support leg 7. The connecting ring 8 is welded to the support leg 7. A control box 6 is installed on the front end of the storage outer box 1. The control box 6 is fixedly connected to the storage outer box 1.

[0029] Working Principle: During use, the operator uses an external vacuum device to create a vacuum inside the storage outer box 1. The operator then adds the material into the device through the feed pipe 4. Under gravity, the material falls into the mixing tray 11. The drive motor 5 then rotates the rotating shaft 10, which in turn rotates the mixing tray 11. This causes the material to fly out through the spit hole 15 on the outside of the mixing tray 11 under centrifugal force, impacting the upper part of the reaction chamber 9 for initial mixing and more efficient mixing. Simultaneously, the stirring shaft 12 agitates the material, ensuring more uniform mixing. The internal heating plate 13 is activated, raising the internal temperature to the optimal temperature for the material reaction. During the reaction, trifluoroacetyl fluoride is produced, gradually increasing the pressure inside the reaction chamber 9. At this point, the external one-way solenoid valve of the connecting pipe 2 opens, allowing the trifluoroacetyl fluoride to drain into the storage outer box 1, thereby reducing the pressure inside the reaction chamber 9 and decreasing the reaction rate. The amount of reaction products inside the reaction chamber 9 is controlled to promote rapid reaction. The storage outer chamber 1 of this device can store the products and also has a certain heat preservation function to prevent excessive temperature fluctuations inside the device. The mixing tray 11 allows the material to fall into the mixing tray 11 under the action of gravity when it is added to the device. When the stirring shaft 12 drives the mixing tray 11 to rotate, the material flies out through the spit hole 15 on the outside of the mixing tray 11, and then the material impacts the upper part of the reaction chamber 9, so as to initially mix the material and make the mixing more efficient, thus enhancing the mixing capacity of the device. The connecting conduit 2 allows the trifluoroacetyl fluoride gas generated inside the device to enter the storage outer chamber 1 for temporary storage of trifluoroacetyl fluoride, ensuring the stability of the gas pressure inside the reaction chamber 9. At the same time, a portion of the trifluoroacetyl fluoride produced inside the reaction chamber 9 can be removed to ensure that the reaction products are not excessive, thus ensuring rapid reaction and enhancing the practicality of the device.

[0030] 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 preparation device of trifluoroacetyl fluoride, comprising a storage outer box (1), characterized in that: a reaction box (9) is fixedly installed inside the storage outer box (1), the inside of the reaction box (9) is rotatably installed with a rotating shaft (10) through a bearing, the outside of the rotating shaft (10) is fixedly installed with a mixing disc (11), the outside of the mixing disc (11) is annularly arranged with a plurality of flying liquid holes (15), the lower ends of the two sides of the outside of the rotating shaft (10) are both welded with stirring shafts (12); a connecting conduit (2) is fixedly installed on one side of the upper end of the reaction box (9), one end of the connecting conduit (2) is welded with the storage outer box (1), the outside of the connecting conduit (2) is provided with a one-way electromagnetic valve, the inner side of the storage outer box (1) is fixedly installed with a heating plate (13), and the inside of the storage outer box (1) is fixedly installed with a heat insulation pad (14). The upper end of the reaction box (9) is fixedly installed with a driving motor (5), and the driving motor (5) is connected with the rotating shaft (10) through a shaft coupling.

2. A device for the preparation of trifluoroacetyl fluoride according to claim 1, characterized in that: The other side of the upper end surface of the reaction box (9) is installed with a cleaning liquid filling pipeline (3), and the cleaning liquid filling pipeline (3) is welded with the reaction box (9).

3. The apparatus for preparing trifluoroacetyl fluoride according to claim 1, characterized in that: The rear end of the upper end surface of the reaction box (9) is installed with a feeding pipeline (4), and the feeding pipeline (4) is welded with the reaction box (9).

4. The apparatus of claim 1, wherein: The lower end of the reaction box (9) is installed with a supporting leg (7), and the supporting leg (7) is welded with the reaction box (9).

5. The apparatus of claim 1, wherein: The outside of the supporting leg (7) is installed with a connecting ring (8), and the connecting ring (8) is welded with the supporting leg (7).

6. A device for the preparation of trifluoroacetyl fluoride according to claim 5, characterized in that: The front end surface of the storage outer box (1) is installed with a control box (6), and the control box (6) is fixedly connected with the storage outer box (1).

7. The apparatus of claim 1, wherein: ​

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