Coagulation device for polyperfluorinated ethylene propylene production

Abstract

The utility model discloses a condensation device for polyperfluorinated ethylene propylene production, which comprises a reaction kettle, the bottom of the reaction kettle is fixedly connected with a plurality of support legs, the top of the reaction kettle is provided with a feed port, the top of the reaction kettle is connected with a rotating rod through a rotary driving device, the rotating rod penetrates through the top side wall of the reaction kettle, and the support legs are fixedly connected with the bottom of the reaction kettle. The bottom end of the rotating rod extends into the reaction kettle and is fixedly connected with a screw rod, the bottom end of the screw rod is close to the inner bottom of the reaction kettle, two fixed rods are fixedly connected to the inner side wall of the reaction kettle, a fixed cylinder is fixedly connected between the two fixed rods, and the screw rod is rotatably connected into the fixed cylinder; and a stirring device is arranged on the side wall of the rotating rod. The reaction kettle not only can stir and mix a catalyst and raw materials, but also can continuously mix the raw materials in the reaction kettle from the bottom to the top, so that the catalyst and the raw materials are more fully mixed, the catalytic effect of the catalyst is improved, and the condensation reaction rate is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of polyperfluoroethylene propylene production, in particular to a condensation device for polyperfluoroethylene propylene production. Background Art

[0002] Fluorinated ethylene propylene (PFA) resin is a high-performance thermoplastic polymer with excellent corrosion resistance, high temperature resistance, low viscosity and good electrical properties. It is widely used in chemical, semiconductor, optical, medical and other fields. PFA is usually prepared by the coagulation method.

[0003] The polyperfluoroethylene propylene resin condensation device is usually composed of a reactor, a cooler, a filter, a distiller and a control system. Among them, the reactor is the core equipment for preparing PFA resin, which is usually made of stainless steel and has the characteristics of high temperature resistance, pressure resistance and corrosion resistance. Raw monomers and catalysts are added into the reactor, and after heating, stirring, reaction, cooling and other process steps, PFA resin is finally obtained.

[0004] In the conventional poly(perfluoroethylene propylene) resin coagulation process, a catalyst needs to be added in the catalytic process in the reactor. The conventional catalyst is directly added on the surface of the reactor solution. However, the reaction catalysis process of this addition process is slow, and the catalyst needs to be slowly integrated into the solution for catalysis. Patent announcement number CN220126199U discloses a poly(perfluoroethylene propylene) resin coagulation device, which increases the catalytic effect of the catalyst and the coagulation reaction rate by adding a stirring structure. However, the adhesion coefficient of the poly(perfluoroethylene propylene) resin solution is high, and the bottom and top solutions in the reactor are not easy to flow with each other during stirring, so that the overall mixed coagulation reaction is still slow. Therefore, a coagulation device that can improve the poly(perfluoroethylene propylene) catalytic process is needed. Utility Model Content

[0005] The utility model provides a condensation device for producing polyperfluoroethylene propylene to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A condensation device for producing polyperfluoroethylene propylene comprises a reactor, a plurality of supporting legs are fixedly connected to the bottom of the reactor, a feed port is arranged on the top of the reactor, a rotating rod is connected to the top of the reactor through a rotating drive device, the rotating rod penetrates the top side wall of the reactor, the bottom end of the rotating rod extends into the reactor and is fixedly connected to a spiral rod, the bottom end of the spiral rod is close to the inner bottom of the reactor, two fixed rods are fixedly connected to the inner side wall of the reactor, a fixed cylinder is fixedly connected between the two fixed rods, the spiral rod is rotatably connected in the fixed cylinder, a stirring device is arranged on the side wall of the rotating rod, a discharge nozzle is fixedly connected to the central bottom side wall of the reactor, and a valve is arranged on the discharge nozzle.

[0008] Preferably, the rotary drive device comprises a protection box, the protection box is fixedly connected to the top side wall of the reactor, a motor is fixedly connected to the inner side wall of the protection box, and the output shaft of the motor is fixedly connected to the upper end of the rotating rod.

[0009] Preferably, the stirring device comprises an L-shaped rod, the L-shaped rod is fixedly connected to the side wall of the rotating rod, and a plurality of stirring rods are fixedly connected to the side wall of the L-shaped rod.

[0010] Preferably, the bottom of the reactor is in an inverted cone shape.

[0011] Preferably, a heater is provided on the inner wall of the reactor.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows: the device can not only stir and mix the catalyst and the raw material by arranging the spiral rod, the fixed cylinder, the L-shaped rod, the stirring rod and other components to cooperate with each other, but also can continuously mix the bottom and the top of the raw material in the reactor, so that the catalyst and the raw material are more fully mixed, the catalytic effect of the catalyst is improved, and the condensation reaction rate is increased.

[0013] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiment of the utility model with the accompanying drawings. The specific implementation method of the utility model is given in detail by the following embodiments and their drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0015] Figure 1 This is a three-dimensional structural schematic diagram of a condensation device for producing polyperfluoroethylene propylene proposed by the utility model;

[0016] Figure 2 This is a front cross-sectional structural schematic diagram of a condensation device for producing polyperfluoroethylene propylene proposed by the utility model;

[0017] Figure 3 It is a schematic diagram of the internal top view of the reaction kettle in the utility model.

[0018] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0019] 1. Motor; 2. Rotating rod; 3. Screw rod; 4. Heater; 5. Fixed cylinder; 6. Reactor; 7. Discharge nozzle; 8. Protective box; 9. Feed inlet; 10. L-shaped rod; 11. Stirring rod; 12. Fixed rod; 13. Valve; 14. Support leg. DETAILED DESCRIPTION

[0020] The following describes the materials and features of the utility model in conjunction with the accompanying drawings. The examples are only used to explain the utility model and are not used to limit the scope of the utility model. In the following paragraphs, the utility model is described in more detail by way of example with reference to the accompanying drawings. It should be noted that the accompanying drawings are all in a very simplified form and are not in precise proportions, and are only used to facilitate and clearly assist in explaining the purpose of the embodiments of the utility model.

[0021] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a component centered. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a component centered. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a component centered. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0023] See also Figures 1 to 3In the embodiment of the utility model, a condensation device for producing polyperfluoroethylene propylene includes a reactor 6, a heater 4 is provided on the inner side wall of the reactor 6, a plurality of supporting legs 14 are fixedly connected to the bottom of the reactor 6, a feed port 9 is provided on the top of the reactor 6, a rotating rod 2 is connected to the top of the reactor 6 through a rotating drive device, the rotating rod 2 penetrates the top side wall of the reactor 6, the bottom end of the rotating rod 2 extends into the reactor 6 and is fixedly connected to a spiral rod 3, the bottom end of the spiral rod 3 is close to the inner bottom of the reactor 6, two fixed rods 12 are fixedly connected to the inner side wall of the reactor 6, a fixed cylinder 5 is fixedly connected between the two fixed rods 12, the spiral rod 3 is rotatably connected in the fixed cylinder 5, a stirring device is provided on the side wall of the rotating rod 2, the bottom of the reactor 6 is inverted cone shape, a discharge nozzle 7 is fixedly connected to the central bottom side wall of the reactor 6, and a valve 13 is provided on the discharge nozzle 7.

[0024] Specifically, the rotary drive device includes a protective box 8, which is fixedly connected to the top side wall of the reactor 6. A motor 1 is fixedly connected to the inner side wall of the protective box 8. The output shaft of the motor 1 is fixedly connected to the upper end of the rotating rod 2. When the motor 1 is started, the motor 1 can drive the rotating rod 2 to rotate. When the rotating rod 2 rotates, it can drive the L-shaped rod 10 and the spiral rod 3 to rotate.

[0025] Specifically, the stirring device includes an L-shaped rod 10, which is fixedly connected to the side wall of the rotating rod 2. Multiple stirring rods 11 are fixedly connected to the side wall of the L-shaped rod 10. When the rotating rod 2 rotates, the L-shaped rod 10 can drive the multiple stirring rods 11 to rotate in the reactor 6, thereby allowing the multiple stirring rods 11 to stir the raw materials.

[0026] The working raw materials of the utility model are:

[0027] When in use, firstly, the polyperfluoroethylene propylene raw material monomer and the catalyst are put into the reactor 6 through the feed port 9, so that the raw material monomer undergoes a condensation reaction under the action of the catalyst, and then the motor 1 is started, and the motor 1 can drive the rotating rod 2 to rotate. When the rotating rod 2 rotates, it can drive multiple stirring rods 11 to stir the raw materials through the L-shaped rod 10, so that the raw materials and the catalyst are effectively mixed, and while the rotating rod 2 rotates, the rotating rod 2 can drive the spiral rod 3 to rotate, and the rotation of the spiral rod 3 can drive the raw materials at the bottom of the reactor 6 to be gradually lifted to the inner top of the reactor 6 along the fixed cylinder 5. Under the continuous mixing action of the spiral rod 3 on the bottom and top of the raw materials, and the stirring of the stirring rod 11, the catalyst and the raw materials can be more fully mixed, thereby improving the catalytic effect of the catalyst and increasing the condensation reaction rate.

[0028] The above description is only a preferred embodiment of the utility model and does not impose any form of limitation on the utility model. Any ordinary technician in the industry can smoothly implement the utility model as shown in the drawings of the specification and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the utility model using the technical content disclosed above are all equivalent embodiments of the utility model. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the utility model are still within the protection scope of the technical solution of the utility model.

Claims

1. A condensation device for producing polyperfluoroethylene propylene, comprising a reaction kettle (6), characterized in that: The bottom of the reactor (6) is fixedly connected to a plurality of support legs (14); the top of the reactor (6) is provided with a feed port (9); the top of the reactor (6) is connected to a rotating rod (2) via a rotary drive device; the rotating rod (2) penetrates the top side wall of the reactor (6); the bottom end of the rotating rod (2) extends into the interior of the reactor (6) and is fixedly connected to a spiral rod (3); the bottom end of the spiral rod (3) is close to the inner bottom of the reactor (6); two fixed rods (12) are fixedly connected to the inner side wall of the reactor (6); a fixed cylinder (5) is fixedly connected between the two fixed rods (12); the spiral rod (3) is rotatably connected in the fixed cylinder (5); a stirring device is provided on the side wall of the rotating rod (2); a discharge nozzle (7) is fixedly connected to the central bottom side wall of the reactor (6); a valve (13) is provided on the discharge nozzle (7).

2. A condensation device for producing polyperfluoroethylene propylene according to claim 1, characterized in that: The rotary drive device comprises a protection box (8), the protection box (8) being fixedly connected to the top side wall of the reaction kettle (6), a motor (1) being fixedly connected to the inner side wall of the protection box (8), and an output shaft of the motor (1) being fixedly connected to the upper end of the rotating rod (2).

3. A condensation device for producing polyperfluoroethylene propylene according to claim 1, characterized in that: The stirring device comprises an L-shaped rod (10), wherein the L-shaped rod (10) is fixedly connected to a side wall of a rotating rod (2), and a plurality of stirring rods (11) are fixedly connected to the side wall of the L-shaped rod (10).

4. A condensation device for producing fluoroethylene propylene according to claim 1, characterized in that: The bottom of the reaction kettle (6) is arranged in an inverted cone shape.

5. A condensation device for producing fluoroethylene propylene according to claim 1, characterized in that: A heater (4) is provided on the inner wall of the reaction kettle (6).

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