Stirring device of large-scale butanol and octanol synthesis reaction kettle

Abstract

The utility model discloses a large-scale butanol and octanol synthesis reaction kettle stirring device, which relates to the technical field of reaction kettle stirring and comprises a mounting bottom plate mounted at a port of a reaction kettle body and a magnetic sealing element mounted at one end of the mounting bottom plate, and an upper shaft for driving a stirring element in the reaction kettle body to operate is arranged between the magnetic sealing element and the mounting bottom plate; the magnetic sealing piece comprises an outer rotating body, an inner rotating body and a sealing cover which are connected with each other, the outer rotating body and the inner rotating body are separated through the sealing cover and are driven by magnetic force, and the inner rotating body is fixedly connected to one end of the upper shaft; the outer revolving body is separated from the sealing cover and drives the inner revolving body to rotate through magnetic force, finally, materials in the reaction kettle body are stirred by the stirring shaft and the stirrer through the inner revolving body and the upper shaft, and a shaft seal is changed from a mechanical seal to a large-torque magnetic seal, so that the problem that the mechanical seal is caused by mounting a sealing piece between the stirring shaft and the sealing shell is solved; and leakage is easily caused.

Description

Technical Field

[0001] The utility model belongs to the technical field of reaction kettle stirring, in particular to a large-scale stirring device for a butanol and octanol synthesis reaction kettle. Background Art

[0002] Butanol and octanol can be produced in the same device by hydroxyl synthesis method, so it is usually called butanol and octanol. Butanol and octanol are important raw materials for the synthesis of fine chemical products, mainly used in the production of plasticizers, solvents, dehydrating agents, defoaming agents, dispersants, flotation agents, petroleum additives and synthetic fragrances. The large-scale butanol and octanol synthesis reactor stirring device is a device used for butanol and octanol synthesis reaction in large-scale production.

[0003] The stirring device is usually composed of a stirrer, a motor, a reducer, a bearing and a sealing device. The stirrer is the core part of the stirring device. It mixes the reaction materials evenly by rotating the stirring blades to promote the reaction. The motor provides power to drive the rotation of the stirrer. The reducer converts the high-speed rotation of the motor into the appropriate speed required by the stirrer through the deceleration effect. The bearing supports the rotation of the stirrer and reduces friction loss. The sealing device is used to prevent the leakage of the reaction materials.

[0004] In the prior art, the stirring device generally adopts mechanical seals, and a seal is installed between the stirring shaft and the sealing shell to prevent the reaction material from leaking. The advantage of mechanical seals is that they have good sealing performance and can withstand higher pressures and temperatures. However, as the equipment runs for a long time or is used improperly, the seals may wear, age or be damaged. At the same time, changes in temperature and pressure during the reaction process may affect the seals, causing them to lose their sealing performance, which will lead to leakage. Mechanical seal leakage causes the entire equipment to stop, causing great economic losses.

[0005] Therefore, we propose a large-scale stirring device for the 1,2-butanol synthesis reactor to solve the above problems. Utility Model Content

[0006] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a large-scale stirring device for a butyl octanol synthesis reactor, which solves the problem that a mechanical seal is easily leaked by installing a sealing member between a stirring shaft and a sealing shell.

[0007] To achieve the above-mentioned purpose, according to an embodiment of the utility model, a large-scale butanol synthesis reactor stirring device is proposed, comprising a mounting base plate installed on the port of the reactor body, a magnetic seal installed on one end of the mounting base plate, and an upper shaft driving the stirring member in the reactor body to operate is arranged between the magnetic seal and the mounting base plate; the magnetic seal comprises an outer rotating body, an inner rotating body and a sealing cover connected to each other, the outer rotating body and the inner rotating body are separated by the sealing cover, and are driven by magnetic force, and the inner rotating body is fixedly connected to one end of the upper shaft.

[0008] Preferably, the stirring member comprises a stirring shaft fixedly connected to the end of the upper shaft, and an agitator located outside the stirring shaft, and a bottom bearing is provided between the bottom end of the stirring shaft and the inner wall of the reaction kettle body.

[0009] Preferably, the magnetic seal also includes a fixed connecting flange 1 and a magnetic sealing frame and a connecting flange 2 rotatably connected to the connecting flange 1, the connecting flange 2 is fixedly installed on the outer rotating body, the magnetic sealing frame is fixedly connected to a supporting short section at one end facing the reactor body, the supporting short section is fixed to the port of the reactor body, and the sealing cover is located in the magnetic sealing frame and fixedly connected to the supporting short section.

[0010] Preferably, the mounting base plate comprises a cooling base and a mounting flange connected to each other, the cooling base is fixedly mounted on one side of the supporting short section, and the mounting flange is fixedly mounted on a port of the reactor body.

[0011] Preferably, a sealed bearing is provided between the upper shaft and the supporting short section.

[0012] Preferably, a sealing member is provided on a side of the cooling base facing the upper shaft.

[0013] Preferably, the sealing element is a labyrinth seal.

[0014] Preferably, a motor and a reducer are provided on one side of the second connecting flange, the output end of the motor is connected to the reducer via a coupling, and the output end of the reducer is fixedly connected to the second connecting flange.

[0015] Preferably, a support member suitable for the motor is provided at one end of the reactor body.

[0016] Preferably, the support member comprises a base, a support column and a mounting seat which are fixedly connected in sequence, the base is fixedly connected to the outer side wall of the reactor body, and the mounting seat is fixedly connected to the bottom end of the motor.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] By setting an outer rotating body, an inner rotating body and a sealing cover, the connecting flange 2 is driven by a motor, a coupling and a reducer to achieve rotation. The connecting flange 2 drives the outer rotating body to rotate. The outer rotating body drives the inner rotating body to rotate through the sealing cover and magnetic force. Finally, the stirring shaft and the agitator stir the materials in the reactor body through the inner rotating body and the upper shaft, which improves the overall stability of the stirring device. The shaft seal is replaced from a mechanical seal to a large-torque magnetic seal. The replacement with a magnetic seal completely solves the problem of shaft seal leakage to avoid shutdown of the entire equipment.

[0019] A cooling base is provided to isolate the temperature between the reactor body and the sealed bearing to prevent the sealed bearing from overheating. A plurality of holes are provided on the cooling base to balance the pressure inside the reactor body and the outside world to prevent the grease of the sealed bearing from being extracted during disassembly. The setting of the labyrinth seal effectively reduces the transmission of pressure. At the same time, the step of the seal can effectively reduce the grease of the sealed bearing from falling into the reactor body. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural diagram of the utility model;

[0021] Figure 2 It is a partial structural diagram of the utility model;

[0022] Figure 3 for Figure 2 The enlarged structure diagram at A in the middle;

[0023] Figure 4 for Figure 2 Enlarged structural diagram of point B in the middle.

[0024] The numbers in the figure represent: 1. Motor; 2. Coupling; 3. Reducer; 4. Magnetic seal; 5. Mounting base; 6. Stirring shaft; 7. Agitator; 8. Reactor body; 9. Bottom bearing; 10. Connecting flange one; 11. Connecting flange two; 12. Outer rotating body; 13. Inner rotating body; 14. Magnetic seal frame; 15. Sealing cover; 16. Upper shaft; 17. Support short section; 18. Sealed bearing; 19. Cooling base; 20. Mounting flange; 21. Base; 22. Support column; 23. Mounting seat; 24. Seal. DETAILED DESCRIPTION

[0025] The technical solution of the utility model will be described clearly and completely in conjunction with the embodiments below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] like Figure 1 and Figure 2 As shown, a large-scale stirring device for a butyl octanol synthesis reactor comprises a reactor body 8, a mounting base plate 5 is arranged at the port of the reactor body 8, a magnetic seal 4 is arranged at one end of the mounting base plate 5, an upper shaft 16 is penetrated between the magnetic seal 4 and the middle of the mounting base plate 5, the bottom end of the upper shaft 16 extends into the reactor body 8, and a stirring shaft 6 is fixedly installed, a stirrer 7 is fixedly installed on the outside of the stirring shaft 6, and the stirrer 7 is used to stir the material in the reactor body 8, and a bottom bearing 9 is arranged at the bottom end of the stirring shaft 6 and the inner wall of the reactor body 8 to improve the stability of the stirring shaft 6 during the rotation process. A motor 1 and a reducer 3 are provided on the outside of the reactor body 8. The output end of the motor 1 is connected to the reducer 3 through a coupling 2, and provides driving force for the rotation of the upper shaft 16. The upper shaft 16 drives the stirrer 7 to stir the materials in the reactor body 8 through the stirring shaft 6. The stirring direction preferably adopts the direction of the arrow shown in the motor 1. A support is provided at one end of the reactor body 8, and the support is used to position and support the motor 1; a gas distributor is also provided in the reactor body 8, and the gas distributor is tilted downward to reduce the impact of the gas on the stirrer 7 and improve stability.

[0027] The support member includes a base 21 , a support column 22 and a mounting seat 23 which are fixedly connected in sequence. The base 21 is fixedly connected to the outer wall of the reaction kettle body 8 , and the mounting seat 23 is fixedly connected to the bottom end of the motor 1 .

[0028] As an implementation method in this embodiment, Figure 1-Figure 3As shown, the magnetic seal 4 includes a connecting flange 10, a connecting flange 11, an outer rotating body 12, an inner rotating body 13, a magnetic sealing frame 14 and a sealing cover 15, wherein the mounting seat 23 is fixedly connected to the magnetic sealing frame 14 at one end facing the reducer 3, the magnetic sealing frame 14 is fixedly installed with the connecting flange 10 at one end facing the reducer 3, the middle part of the connecting flange 10 is rotatably connected with the connecting flange 2 11, the output end of the reducer 3 is fixed with the connecting flange 2 11, the end of the connecting flange 2 11 away from the reducer 3 is fixedly connected with the outer rotating body 12, the end of the magnetic sealing frame 14 facing the reactor body 8 is fixedly connected with a supporting short section 17, the supporting short section 17 is fixed with the port of the reactor body 8, and the sealing cover 15 is fixedly installed on one side of the supporting short section 17 facing the inside of the magnetic sealing frame 14. An inner rotating body 13 is provided on the inner wall of the sealing cover 15, and the inner rotating body 13 is fixedly connected to one end of the upper shaft 16. Magnets are provided on the sides of the outer rotating body 12 and the inner rotating body 13 that are close to each other, and magnetic steel is preferably used. Among them, the outer rotating body 12 does not contact the inner rotating body 13, and neither of them contacts the sealing cover 15, and transmission is only achieved through magnetic force. When the motor 1 drives the reducer 3 to rotate through the coupling 2, the output end of the reducer 3 drives the outer rotating body 12 to rotate, and the rotation of the outer rotating body 12 drives the inner rotating body 13 to rotate through the magnetic force. The inner rotating body 13 transmits power to the upper shaft 16 through the upper shaft 16, so that the upper shaft 16 drives the stirring shaft 6 and the agitator 7 in the reactor body 8 to rotate, so as to achieve stirring of the materials, avoid the use of mechanical sealing, achieve no risk of leakage, reduce the frequency of shutdown maintenance, and improve production efficiency.

[0029] As an implementation method in this embodiment, Figure 1 , Figure 2 and Figure 4As shown, the mounting base plate 5 includes a cooling base 19 and a mounting flange 20, wherein the cooling base 19 is fixedly mounted between the supporting short section 17 and the mounting flange 20, the mounting flange 20 is fixedly mounted at the port of the reactor body 8, the supporting short section 17 is fixedly connected to the mounting flange 20, the other end of the magnetic sealing frame 14 is fixedly connected to the reducer 3, the upper shaft 16 passes through the supporting short section 17 and the mounting flange 20, and is rotatably connected to the supporting short section 17 and the mounting flange 20, and a sealing bearing 18 is arranged between the upper shaft 16 and the supporting short section 17 to reduce friction; the cooling base 1 9 is used to isolate the temperature between the reactor body 8 and the sealed bearing 18 to prevent the temperature of the sealed bearing 18 from being too high. At the same time, a plurality of holes are opened on the cooling base 19, and the holes are used to balance the pressure inside the reactor body 8 and the outside to prevent the grease of the sealed bearing 18 from being extracted during disassembly. A seal 24 is provided on the side of the cooling base 19 facing the upper shaft 16. The seal 24 is preferably a labyrinth seal, which is made of a mixture of graphite and stainless steel, and can effectively reduce the transmission of pressure. At the same time, the step of the seal 24 can effectively reduce the grease of the sealed bearing 18 from falling into the reactor body 8.

[0030] The motor 1, the coupling 2 and the reducer 3 drive the connecting flange 11 to rotate, the connecting flange 11 drives the outer rotating body 12 to rotate, the outer rotating body 12 drives the inner rotating body 13 to rotate through the magnetic force, and the middle is separated by a sealing cover 15 to eliminate the risk of leakage. The upper shaft 16 rotates relative to the support short section 17 through the sealing bearing 18, and the upper shaft 16 drives the stirring shaft 6 and the stirrer 7 in the reactor body 8 to rotate, so as to achieve stirring of the material.

[0031] The above embodiments are only used to illustrate the technical method of the utility model rather than to limit it. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical method of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the utility model.

Claims

1. A large-scale stirring device for a butyl octanol synthesis reactor, characterized in that: include: A mounting base plate (5) mounted on the port of a reaction kettle body (8), a magnetic seal (4) mounted on one end of the mounting base plate (5), and an upper shaft (16) for driving a stirring element in the reaction kettle body (8) to operate is arranged between the magnetic seal (4) and the mounting base plate (5); The magnetic seal (4) comprises an outer rotating body (12), an inner rotating body (13) and a sealing cover (15) which are connected to each other. The outer rotating body (12) and the inner rotating body (13) are separated from each other by the sealing cover (15) and driven by magnetic force. The inner rotating body (13) is fixedly connected to one end of the upper shaft (16). The magnetic seal (4) further comprises a first connecting flange (10) and a magnetic seal frame (14) fixed thereto, and a second connecting flange (11) rotatably connected to the first connecting flange (10), wherein the second connecting flange (11) is fixedly mounted to the outer rotating body (12), and a supporting short section (17) is fixedly connected to one end of the magnetic seal frame (14) facing the reactor body (8), and the supporting short section (17) is fixed to a port of the reactor body (8), and the sealing cover (15) is located in the magnetic seal frame (14) and is fixedly connected to the supporting short section (17); The mounting base plate (5) comprises a cooling base (19) and a mounting flange (20) connected to each other, the cooling base (19) is fixedly mounted on one side of the supporting short section (17), a plurality of holes are provided on the cooling base (19), and the mounting flange (20) is fixedly mounted on a port of the reactor body (8); A sealed bearing (18) is provided between the upper shaft (16) and the supporting short section (17).

2. The large-scale butyl octanol synthesis reactor stirring device according to claim 1 is characterized in that: The stirring member comprises a stirring shaft (6) fixedly connected to the end of the upper shaft (16), and a stirrer (7) located outside the stirring shaft (6); a bottom bearing (9) is provided between the bottom end of the stirring shaft (6) and the inner wall of the reaction kettle body (8).

3. The large-scale butyl octanol synthesis reactor stirring device according to claim 1 is characterized in that: A sealing member (24) is provided on the side of the cooling base (19) facing the upper shaft (16).

4. The large-scale butyl octanol synthesis reactor stirring device according to claim 3 is characterized in that: The sealing element (24) is a labyrinth seal.

5. The large-scale butanol synthesis reactor stirring device according to claim 1 is characterized in that: A motor (1) and a reducer (3) are provided on one side of the second connecting flange (11); the output end of the motor (1) is connected to the reducer (3) via a coupling (2); and the output end of the reducer (3) is fixedly connected to the second connecting flange (11).

6. The large-scale butanol synthesis reactor stirring device according to claim 5 is characterized in that: One end of the reactor body (8) is provided with a support member suitable for the motor (1).

7. The large-scale butanol and octanol synthesis reactor stirring device according to claim 6 is characterized in that: The support member comprises a base (21), a support column (22) and a mounting seat (23) which are fixedly connected in sequence, the base (21) being fixedly connected to the outer wall of the reaction kettle body (8), and the mounting seat (23) being fixedly connected to the bottom end of the motor (1).

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