Polyisobutene reaction kettle

Abstract

The utility model provides a polyisobutene reaction kettle which comprises a kettle body, a material inlet and a material outlet are formed in the kettle body, a first annular plate and a second annular plate are arranged in the kettle body, the first annular plate divides one end in the kettle body into a first material guide cavity, and the second annular plate divides the other end in the kettle body into a second material guide cavity. The first material guide cavity is communicated with the material inlet, and the second material guide cavity is communicated with the material outlet; the material guide cylinder is arranged in the kettle body and between the first annular plate and the second annular plate, and the material guide cylinder is communicated with the first material guide cavity and the second material guide cavity; a refrigerant cavity is formed between the outer wall of the guide cylinder and the inner wall of the kettle body; the plurality of material circulating pipes are arranged in the refrigerant cavity, and the material circulating pipes are communicated with the first material guide cavity and the second material guide cavity; and the driving assembly is used for enabling the materials to circulate from the first material guide cavity to the second material guide cavity through the material guide barrel. According to the polyisobutene reaction kettle provided by the invention, heat exchange can be more effectively carried out on materials, and the problem of material adhesion is avoided.

Description

Technical Field

[0001] This disclosure generally relates to the field of industrial production technology of polyisobutylene, and specifically to a polyisobutylene reactor. Background Technology

[0002] Polyisobutylene (POB) is an important chemical raw material widely used in lubricant additives, adhesives, sealants, and other fields. In the PIB production process, the reactor is one of the key pieces of equipment, and its performance directly affects product quality and production efficiency. Traditional PIB reactors typically use a refrigerant circulating in pipes to exchange heat with the material outside the pipes during the reaction process. This heat exchange method often faces problems such as insufficient heat exchange, unstable temperature control, and material adhesion, leading to low reaction efficiency, increased by-products, and even affecting product quality. Utility Model Content

[0003] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a polyisobutylene reactor to solve the above problems.

[0004] This application provides a polyisobutylene reactor, comprising:

[0005] The vessel body has a material inlet and a material outlet. The vessel body has a first annular plate and a second annular plate. The first annular plate separates one end of the vessel body into a first material guiding cavity, and the second annular plate separates the other end of the vessel body into a second material guiding cavity. The first material guiding cavity is connected to the material inlet, and the second material guiding cavity is connected to the material outlet.

[0006] A feed tube is disposed inside the reactor body and positioned between the first annular plate and the second annular plate. The feed tube connects the first feed chamber and the second feed chamber. A refrigerant chamber is formed between the outer wall of the feed tube and the inner wall of the reactor body.

[0007] Multiple material circulation pipes are disposed within the refrigerant chamber, and the material circulation pipes connect the first material guiding chamber and the second material guiding chamber.

[0008] A drive assembly is used to guide material from the first guide chamber through the guide cylinder to the second guide chamber.

[0009] According to the technical solution provided in the embodiments of this application, the reactor body is further provided with a catalyst injection port, which is connected to the first feed chamber.

[0010] According to the technical solution provided in the embodiments of this application, the vessel body is further provided with a refrigerant inlet and a refrigerant outlet, and the refrigerant inlet and the refrigerant outlet are respectively connected to both ends of the refrigerant cavity.

[0011] According to the technical solution provided in the embodiments of this application, a spiral refrigerant guide plate is provided inside the refrigerant cavity. The refrigerant guide plate is located on the outer periphery of the feed cylinder and is used to guide the refrigerant from the refrigerant inlet to the refrigerant outlet.

[0012] According to the technical solution provided in the embodiments of this application, the driving component includes:

[0013] A drive shaft is disposed inside the vessel body and passes through the guide cylinder. The drive shaft is coaxially arranged with the vessel body. Multiple axial flow propellers are provided on the side wall of the drive shaft. The axial flow propellers are used to drive the material to move along the axial direction of the drive shaft inside the guide cylinder, so that the material enters the first guide cavity from the second guide cavity through the guide cylinder.

[0014] A driving device is provided outside the vessel body and is connected to one end of the driving shaft for driving the driving shaft to rotate.

[0015] According to the technical solution provided in the embodiments of this application, a radial propeller is provided at the end of the drive shaft away from the drive device, and the radial propeller is used to drive the material to move outward along the radial direction of the drive shaft.

[0016] According to the technical solution provided in the embodiments of this application, the vessel body is provided with a pressure gauge port, which is connected to the first material guide cavity, and the pressure gauge port is used to place a pressure sensor.

[0017] According to the technical solution provided in the embodiments of this application, the vessel body is provided with a thermometer port, which is connected to the second material guide cavity, and the thermometer port is used to place a thermometer.

[0018] Compared with the prior art, the beneficial effects of this application are as follows: By setting a first annular plate and a second annular plate, the first annular plate and the second annular plate respectively separate the two ends of the inside of the vessel into a first material guiding chamber and a second material guiding chamber, and a material guiding cylinder is set between the first annular plate and the second annular plate, the material guiding cylinder connects the first material guiding chamber and the second material guiding chamber, and multiple material circulation pipes are set between the outer wall of the material guiding cylinder and the inner wall of the vessel, the material circulation pipes connect the first material guiding chamber and the second material guiding chamber, so that under the driving action of the driving component, the material can circulate between the first material guiding chamber and the second material guiding chamber, and then fully react under the action of the catalyst. Since the material flows in the material circulation pipe, when exchanging heat with the refrigerant in the refrigerant chamber, the material circulation pipe provides a larger heat exchange area for the material, thereby making the heat exchange between the material and the refrigerant more complete, ensuring temperature stability, avoiding the problem of material adhesion, and avoiding the generation of by-products, thus improving reaction efficiency and product quality. Attached Figure Description

[0019] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0020] Figure 1 This is a schematic diagram of the polyisobutylene reactor provided in this application.

[0021] Reference numerals: 1. Reactor body; 2. Material inlet; 3. Material outlet; 4. First annular plate; 5. Second annular plate; 6. First material guide chamber; 7. Second material guide chamber; 8. Material guide cylinder; 9. Refrigerant chamber; 10. Material circulation pipe; 11. Catalyst filling port; 12. Refrigerant inlet; 13. Refrigerant outlet; 14. Refrigerant guide plate; 15. Drive shaft; 16. Axial flow propeller; 17. Drive unit; 18. Radial flow propeller; 19. Pressure gauge port; 20. Thermometer port; 21. Baffle. Detailed Implementation

[0022] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0023] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0024] Please refer to Figure 1 This application provides a polyisobutylene reactor, comprising:

[0025] The vessel body 1 is provided with a material inlet 2 and a material outlet 3. The vessel body 1 is provided with a first annular plate 4 and a second annular plate 5. The first annular plate 4 divides one end of the interior of the vessel body 1 to form a first material guiding cavity 6, and the second annular plate 5 divides the other end of the interior of the vessel body 1 to form a second material guiding cavity 7. The first material guiding cavity 6 is connected to the material inlet 2, and the second material guiding cavity 7 is connected to the material outlet 3.

[0026] A feed tube 8 is disposed inside the vessel body 1 and positioned between the first annular plate 4 and the second annular plate 5. The feed tube 8 connects the first feed chamber 6 and the second feed chamber 7. A refrigerant chamber 9 is formed between the outer wall of the feed tube 8 and the inner wall of the vessel body 1.

[0027] Multiple material circulation pipes 10 are provided in the refrigerant chamber 9, and the material circulation pipes 10 are connected to the first material guiding chamber 6 and the second material guiding chamber 7;

[0028] A drive assembly is used to guide material from the first guide chamber 6 through the guide cylinder 8 to the second guide chamber 7.

[0029] Specifically, the vessel body 1 has a hollow interior forming a first cavity. The bottom outer wall of the vessel body 1 is provided with a material inlet 2, and the top outer wall of the vessel body 1 is provided with a material outlet 3. Both the material inlet 2 and the material outlet 3 are connected to the first cavity. A first annular plate 4 and a second annular plate 5 are disposed in a first cavity. The first annular plate 4 is disposed at one end of the first cavity near the bottom of the vessel body 1. The outer ring of the first annular plate 4 is fixedly connected to and sealed with the inner wall of the vessel body 1. The first annular plate 4 divides the end of the first cavity near the bottom of the vessel body 1 into a first material guiding cavity 6. The first material guiding cavity 6 is connected to the material inlet 2. The material to be reacted can be added into the first material guiding cavity 6 through the material inlet 2. The second annular plate 5 is disposed at one end of the first cavity near the top of the vessel body 1. The outer ring of the second annular plate 5 is fixedly connected to and sealed with the inner wall of the vessel body 1. The second annular plate 5 divides the end of the first cavity near the top of the vessel body 1 into a second material guiding cavity 7. The second material guiding cavity 7 is connected to the material outlet 3. The reacted material in the second material guiding cavity 7 can be discharged through the material outlet 3. Optionally, the material in the first cavity includes isobutylene, polyisobutylene, and liquid solvent. A feed tube 8 is located inside the first cavity and extends along the axis of the vessel body 1. Both ends of the feed tube 8 are fixedly connected and sealed to the inner rings of the first annular plate 4 and the second annular plate 5, respectively. The feed tube 8 connects the first feed chamber 6 and the second feed chamber 7. A refrigerant chamber 9 is formed between the outer wall of the feed tube 8, the inner wall of the vessel body 1, the first annular plate 4, and the second annular plate 5. Multiple material circulation pipes 10 are installed in the refrigerant chamber 9, all extending along the axis of the vessel body 1. One end of each material circulation pipe 10 passes through the first annular plate 4 and connects to the first feed chamber 6, while the other end passes through the second annular plate 5 and connects to the second feed chamber 7. Material can move from the first feed chamber 6 to the second feed chamber 7 through the material circulation pipes 10. The refrigerant chamber 9 is used for circulating refrigerant. The circulating refrigerant exchanges heat with the material circulation pipes 10 to ensure stable temperature during the material reaction. Optionally, the refrigerant is ethylene glycol or brine at -20°C.

[0030] Specifically, the drive component is used to drive the material from the second feed chamber 7 to the first feed chamber 6 through pressure. This causes the material in the first feed chamber 6 to move through multiple material circulation pipes 10 into the first feed chamber 6 due to pressure, thus realizing the circulation of the material in the first chamber. This allows the material to react more fully with the catalyst in the first chamber. At the same time, the material continuously exchanges heat with the refrigerant in the material circulation pipes 10. The multiple material circulation pipes 10 provide a larger heat exchange area for the material to ensure the stability of the reaction temperature and avoid the generation of reaction by-products and the phenomenon of material adhesion. Optionally, the viscosity of the material is kept between 5-20 cp.

[0031] Furthermore, the driving component includes:

[0032] A drive shaft 15 is disposed inside the vessel body 1 and passes through the guide cylinder 8. The drive shaft 15 is coaxially arranged with the vessel body 1. A plurality of axial flow propellers 16 are provided on the side wall of the drive shaft 15. The axial flow propellers 16 are used to drive the material to move along the axial direction of the drive shaft 15 inside the guide cylinder 8, so that the material enters the first guide cavity 6 from the second guide cavity 7 through the guide cylinder 8.

[0033] A driving device 17 is located outside the vessel body 1 and is connected to one end of the driving shaft 15. The driving device 17 is used to drive the driving shaft 15 to rotate.

[0034] Specifically, the drive assembly includes a drive device 17, a drive shaft 15, and multiple axial flow propellers 16 mounted on the drive shaft 15. The drive device 17 is located outside the vessel body 1 near the top of the vessel body 1. Optionally, the drive device 17 is a drive motor. The output shaft of the drive device 17 is connected to one end of the drive shaft 15. The other end of the drive shaft 15 passes through the top wall of the vessel body 1 and extends into the first material guide chamber 6. The drive shaft 15 extends along the axial direction of the vessel body 1. The multiple axial flow propellers 16 are arranged on the drive shaft 15. When the first space is filled with material, the drive device 17 drives the drive shaft 15 to rotate, thereby causing the multiple axial flow propellers 16 to rotate. The rotation of the axial flow propellers 16 causes the material to move along the axial direction of the drive shaft 15, thereby causing the material to move from the second material guide chamber 7 through the material guide cylinder 8 to the first material guide chamber 6. Meanwhile, the material originally in the first material guide chamber 6 moves to the second material guide chamber 7 through the material circulation pipe 10 due to pressure, thus realizing material circulation.

[0035] Specifically, multiple baffles 21 are spaced apart on the inner wall of the feed cylinder 8, and each axial flow propeller 16 is configured to correspond to the gap between two adjacent baffles 21.

[0036] Furthermore, a radial propeller 18 is provided at one end of the drive shaft 15 away from the drive device 17. The radial propeller 18 is used to drive the material to move outward along the radial direction of the drive shaft 15.

[0037] Specifically, the radial impeller 18 is installed at one end of the drive shaft 15 extending into the first feed chamber 6. When the drive device 17 drives the drive shaft 15 to rotate, the drive shaft 15 drives the radial impeller 18 to rotate. The rotation of the radial impeller 18 causes the material entering the first feed chamber 6 from the feed cylinder 8 to spread outward along the radial direction of the drive shaft 15. On the one hand, it can make more sufficient contact with the catalyst, and on the other hand, it can make it easier for the material to enter the material circulation pipe 10.

[0038] Furthermore, the vessel body 1 is also provided with a catalyst injection port 11, which is connected to the first feed chamber 6.

[0039] Specifically, the catalyst filling port 11 is located on the bottom outer wall of the vessel body 1. The catalyst filling port 11 is used to facilitate the addition of the catalyst for the material reaction into the first cavity. The catalyst filling port 11 is connected to the first material guiding cavity 6, which also allows the material to better contact the catalyst when the radial flow paddle 18 drives the material to move radially along the drive shaft 15 during the addition of the catalyst.

[0040] Furthermore, the vessel body 1 is also provided with a refrigerant inlet 12 and a refrigerant outlet 13, which are respectively connected to both ends of the refrigerant chamber 9.

[0041] Specifically, both the refrigerant inlet 12 and the refrigerant outlet 13 are located on the outer wall of the vessel body 1. In this embodiment, the refrigerant inlet 12 connects to the end of the refrigerant cavity 9 near the second annular plate 5, and the refrigerant outlet 13 connects to the end of the refrigerant cavity 9 near the first annular plate 4. That is, the refrigerant inlet 12 is located above the refrigerant outlet 13. By connecting the refrigerant inlet 12 and the refrigerant outlet 13 to the refrigerant circulation pump, the refrigerant can flow counter-currently with the material in the refrigerant cavity 9, thereby improving the heat exchange efficiency of the material. In other embodiments, the refrigerant inlet 12 can also be connected to the end of the refrigerant cavity 9 near the first annular plate 4, and the refrigerant outlet 13 can be connected to the end of the refrigerant cavity 9 near the second annular plate 5, so that the refrigerant can fill the entire refrigerant cavity 9.

[0042] Furthermore, a spiral refrigerant guide plate 14 is provided inside the refrigerant cavity 9. The refrigerant guide plate 14 is located on the outer periphery of the feed cylinder 8. The refrigerant guide plate 14 is used to guide the refrigerant from the refrigerant inlet 12 to the refrigerant outlet 13.

[0043] Specifically, one side of the spiral refrigerant guide plate 14 is fixedly connected to the outer wall of the feed cylinder 8, and the other side is fixedly connected to the inner wall of the vessel body 1. The refrigerant guide plate 14 is penetrated by the material circulation pipe 10 in the refrigerant cavity 9. The refrigerant guide plate 14 is used to make the refrigerant flow through a longer path in the refrigerant cavity 9, thereby improving the heat exchange efficiency with the material.

[0044] Furthermore, the vessel body 1 is provided with a pressure gauge port 19, which is connected to the first material guide chamber 6, and the pressure gauge port 19 is used to place a pressure sensor.

[0045] Specifically, the pressure gauge port 19 is designed to facilitate real-time monitoring of the pressure inside the vessel 1 via a pressure sensor. Optionally, the pressure inside the first chamber is maintained at 0~2MPa during material reaction.

[0046] Furthermore, the vessel body 1 is provided with a thermometer port 20, which is connected to the second material guide cavity 7, and the thermometer port 20 is used to place a thermometer.

[0047] Specifically, the thermometer port 20 is set to facilitate real-time monitoring of the temperature inside the vessel 1 via a thermometer. Optionally, the temperature inside the first chamber is maintained between -20℃ and 10℃ during material reaction.

[0048] Working principle: Open material inlet 2 to fill the first feed chamber 6 with material. Start drive device 17, which drives drive shaft 15 to rotate. This causes the axial flow propeller 16 and radial flow propeller 18 on drive shaft 15 to circulate the material within the vessel body 1. During the circulation of material within the vessel body 1, the material does not fill the vessel body 1 completely, and the liquid level of the material is maintained at a certain level. Figure 1 Position A in the middle is conducive to pressurizing the inside of the vessel 1; then the refrigerant circulation pump is turned on, and the refrigerant is circulated in the refrigerant chamber 9 through the refrigerant inlet 12 and the refrigerant outlet 13 to exchange heat with the material. When the pressure sensor detects that the pressure inside the vessel 1 meets the reaction pressure, and the thermometer detects that the temperature inside the vessel 1 meets the reaction temperature, the catalyst filling port 11 is opened and the catalyst is charged into the vessel 1 to make the catalyst fully contact the material, so that the material can fully react. After the reaction is completed, the reacted material is discharged from the vessel 1 by opening the material outlet 3.

[0049] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A polyisobutylene reactor, characterized in that, include: The vessel body (1) is provided with a material inlet (2) and a material outlet (3). The vessel body (1) is provided with a first annular plate (4) and a second annular plate (5). The first annular plate (4) divides one end of the interior of the vessel body (1) into a first guide cavity (6), and the second annular plate (5) divides the other end of the interior of the vessel body (1) into a second guide cavity (7). The first guide cavity (6) is connected to the material inlet (2), and the second guide cavity (7) is connected to the material outlet (3). A feed tube (8) is disposed inside the vessel body (1) and placed between the first annular plate (4) and the second annular plate (5). The feed tube (8) connects the first feed chamber (6) and the second feed chamber (7). A refrigerant chamber (9) is formed between the outer wall of the feed tube (8) and the inner wall of the vessel body (1). Multiple material circulation pipes (10) are provided in the refrigerant chamber (9), and the material circulation pipes (10) are connected to the first material guiding chamber (6) and the second material guiding chamber (7). A drive assembly is used to guide material from the first guide chamber (6) through the guide cylinder (8) to the second guide chamber (7).

2. The polyisobutylene reactor according to claim 1, characterized in that, The vessel body (1) is also provided with a catalyst injection port (11), which is connected to the first feed chamber (6).

3. The polyisobutylene reactor according to claim 2, characterized in that, The vessel body (1) is also provided with a refrigerant inlet (12) and a refrigerant outlet (13), and the refrigerant inlet (12) and the refrigerant outlet (13) are respectively connected to both ends of the refrigerant chamber (9).

4. The polyisobutylene reactor according to claim 3, characterized in that, The refrigerant cavity (9) is provided with a spiral refrigerant guide plate (14), which is located on the outer periphery of the feed cylinder (8). The refrigerant guide plate (14) is used to guide the refrigerant from the refrigerant inlet (12) to the refrigerant outlet (13).

5. The polyisobutylene reactor according to any one of claims 1-4, characterized in that, The driving component includes: A drive shaft (15) is located inside the vessel body (1) and passes through the guide cylinder (8). The drive shaft (15) is coaxially arranged with the vessel body (1). Multiple axial flow propellers (16) are provided on the side wall of the drive shaft (15). The axial flow propellers (16) are used to drive the material to move along the axial direction of the drive shaft (15) inside the guide cylinder (8) so that the material enters the first guide cavity (6) from the second guide cavity (7) through the guide cylinder (8). The driving device (17) is located outside the vessel body (1) and is connected to one end of the driving shaft (15) for driving the driving shaft (15) to rotate.

6. The polyisobutylene reactor according to claim 5, characterized in that, The drive shaft (15) is provided with a radial propeller (18) at one end away from the drive device (17). The radial propeller (18) is used to drive the material to move outward along the radial direction of the drive shaft (15).

7. The polyisobutylene reactor according to any one of claims 1-4, characterized in that, The vessel body (1) is provided with a pressure gauge port (19), which is connected to the first material guide chamber (6). The pressure gauge port (19) is used to place a pressure sensor.

8. The polyisobutylene reactor according to any one of claims 1-4, characterized in that, The vessel body (1) is provided with a thermometer port (20), which is connected to the second feed chamber (7). The thermometer port (20) is used to place a thermometer.

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