A cyclohexanone cyanohydrin processing reaction kettle

Abstract

The utility model relates to cyclohexanone cyanohydrin processing technical field, the utility model provides a cyclohexanone cyanohydrin processing is with the reation kettle, including jar body, at least three interval arrangement's support leg is installed to the bottom edge department of jar body, is equipped with rotating shaft in the inside of jar body, the top of rotating shaft penetrates the top of jar body and is connected with first drive motor, and first drive motor is fixed with jar body through support, and rotating shaft is rotatably connected with jar body through connecting piece, rotating shaft is the hollow tube of bottom opening setting, the bottom of rotating shaft penetrates the bottom of jar body and is equipped with the delivery pipe, and rotating shaft is rotatably connected with jar body, and first branch pipe and second branch pipe are connected respectively on the other end of delivery pipe. The utility model realizes the dynamic change of stirring range through the reciprocating flow of hydraulic oil in rotating shaft, pushes the piston to drive the telescopic stirring rod in the sleeve, breaks the traditional fixed stirring track, and significantly improves the mixing uniformity and reaction efficiency of raw materials.

Description

Technical Field

[0001] This utility model relates to the field of cyclohexanone cyanohydrin processing technology, and more specifically, to a reaction vessel for cyclohexanone cyanohydrin processing. Background Technology

[0002] Cyclohexanone cyanohydrin (1-hydroxy-1-cyclohexaneformitrile) is an organic compound whose core structure contains α-hydroxyl and cyano groups. It has active chemical properties and can undergo hydrolysis, dehydration, alcoholysis and other reactions, giving rise to fine chemical products such as pharmaceuticals and pesticides.

[0003] In the processing of cyclohexanone cyanohydrin, the raw materials need to be mixed first, that is, hydrogen cyanide and cyclohexanone are thoroughly mixed to form a mixed solution. Then, the mixed solution is heated together with a catalyst to generate a reaction solution. Finally, a flash evaporation technique is used to obtain a cyclohexanone cyanohydrin product with high purity.

[0004] However, during the processing, since the mixing of raw materials and the contact reaction between the catalyst and the mixed solution are involved, stirring blades are often set in the processing reactor to stir the raw materials in order to accelerate the contact and mixing efficiency between the substances. However, conventional stirring blades have a fixed structure, a limited contact range with the raw materials, and a fixed effect. This causes the raw materials to move along a fixed trajectory in the reactor, reducing the mixing and reaction efficiency between the raw materials. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a solution that overcomes or at least partially solves the above technical problems.

[0006] This utility model provides a reaction vessel for processing cyclohexanone cyanohydrin, including a tank body, at least three spaced support legs installed along the bottom edge of the tank body, a rotating shaft provided inside the tank body, the top of the rotating shaft passing through the top of the tank body and connected to a first drive motor, the first drive motor being fixed to the tank body by a bracket, and the rotating shaft being rotatably connected to the tank body by a connector.

[0007] The rotating shaft is a hollow tube with an opening at the bottom. The bottom of the rotating shaft passes through the bottom of the tank and is equipped with a conveying pipe. The rotating shaft is rotatably connected to the tank. A first branch pipe and a second branch pipe are connected to the other end of the conveying pipe. The other end of the first branch pipe and the other end of the second branch pipe are both connected to one end of the conduit. The other end of the conduit is located in the hydraulic oil tank. The hydraulic oil tank is located on one side of the tank, and the end of the conduit is located at the bottom inside the hydraulic oil tank.

[0008] A first delivery pump is installed on the first branch pipe, and a first solenoid valve is also installed on the first branch pipe. A second delivery pump is installed on the second branch pipe, and a second solenoid valve is also installed on the second branch pipe.

[0009] Multiple spaced connecting seats are installed on the rotating shaft. The connecting seats are hollow shells and are connected to the rotating shaft. Several spaced sleeves are installed on the side of the connecting seats. The sleeves are connected to the connecting seats. A stirring rod is built into the other end of the sleeve. Several stirring blades are installed on the end of the stirring rod away from the sleeve. A piston is installed on the end of the stirring rod inside the sleeve. The outer wall of the piston is in close contact with the inner wall of the sleeve.

[0010] In a preferred embodiment, the inner diameter of the port of the sleeve furthest from the connector is smaller than the inner diameter of the sleeve, and the outer wall of the stirring rod is clearance-fitted with the inner wall of the port of the sleeve.

[0011] In a preferred embodiment, a control box is installed on the outer wall of the tank, and a controller is installed inside the control box. The controller is connected to the first drive motor, the first delivery pump, the first solenoid valve, the second delivery pump, and the second solenoid valve respectively via wires.

[0012] In a preferred embodiment, several spaced heating plates are installed on the inner wall of the tank, and a temperature sensor is installed at the bottom of the tank. The temperature sensor and the heating plates are connected to the controller via wires.

[0013] In a preferred embodiment, the connector includes a connecting pipe, which is coaxially sleeved on the top of the rotating shaft. The connecting pipe passes through the top of the tank and is rotatably connected to the tank. The connecting pipe is also rotatably connected to the rotating shaft. An annular receiving groove with an open top is provided at the bottom of the connecting pipe. Multiple through holes are arranged at intervals at the bottom of the receiving groove. The receiving groove is fixed to the connecting pipe by a connecting frame.

[0014] A first gear is coaxially mounted on the top of the connecting pipe, and a second gear meshes with the side of the first gear. A second drive motor is mounted on the second gear. The second drive motor is connected to the controller via a wire and is fixed to the top of the tank by a bracket.

[0015] In a preferred embodiment, a feeding pipe is installed on one side of the top of the tank, and a discharge pipe is installed on one side of the bottom of the tank.

[0016] In a preferred embodiment, a filler pipe is installed on the top side of the hydraulic oil tank.

[0017] The targeted solution provided by this utility model has the following beneficial effects:

[0018] 1. By reciprocating the hydraulic oil within the rotating shaft, the piston is driven to extend and retract the stirring rod within the sleeve, achieving dynamic changes in the stirring range. This breaks away from the traditional fixed stirring trajectory and significantly improves the mixing uniformity and reaction efficiency of the raw materials.

[0019] 2. The stirring rod is equipped with multiple stirring blades at the end. Combined with the telescopic motion, it can fully stir the raw materials in different areas of the tank. It is especially suitable for reaction systems with high viscosity or easy stratification, and improves the synthesis quality of cyclohexanone cyanohydrin. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 The overall three-dimensional representation provided by this utility model embodiment Figure 1 ;

[0022] Figure 2 The overall three-dimensional representation provided for the embodiments of this utility model Figure 2 ;

[0023] Figure 3 Schematic diagram of the internal structure of the tank provided for the embodiment of this utility model Figure 1 ;

[0024] Figure 4 Schematic diagram of the internal structure of the tank provided for the embodiment of this utility model Figure 2 ;

[0025] Figure 5 A schematic diagram of the rotating shaft structure provided for an embodiment of this utility model.

[0026] In the diagram: 1. Tank body; 2. Rotating shaft; 3. First drive motor; 4. Conveying pipe; 5. First branch pipe; 6. Second branch pipe; 7. Conduit; 8. Hydraulic oil tank; 9. First conveying pump; 10. First solenoid valve; 11. Second conveying pump; 12. Second solenoid valve; 13. Connecting seat; 14. Sleeve; 15. Stirring rod; 16. Piston; 17. Oil filling pipe; 18. Heating plate; 19. Connecting pipe; 20. First gear; 21. Second gear; 22. Second drive motor; 23. Receiving trough; 24. Through hole; 25. Feeding pipe; 26. Control box; 27. Discharge pipe. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Example

[0028] Reference Figures 1-5 This utility model provides a technical solution: a reaction vessel for processing cyclohexanone cyanohydrin, including a tank body 1, with at least three spaced support legs installed along the bottom edge of the tank body 1 to support the tank body 1, and a feeding pipe 25 installed on one side of the top of the tank body 1. In use, the cyclohexanone cyanohydrin raw material to be mixed can be added into the tank body 1 through the feeding pipe 25. After mixing and reaction are completed in the tank body 1, a discharge pipe 27 is installed on one side of the bottom of the tank body 1 to discharge the processed cyclohexanone cyanohydrin through the discharge pipe 27.

[0029] like Figure 1 As shown, a rotating shaft 2 is provided inside the tank body 1. The top of the rotating shaft 2 passes through the top of the tank body 1 and is connected to a first drive motor 3. The first drive motor 3 is fixed to the tank body 1 by a bracket, and the rotating shaft 2 is rotatably connected to the tank body 1 by a connector, providing power for the rotation of the rotating shaft 2.

[0030] Among them, such as Figure 1 and Figure 3 As shown, the connector includes a connecting pipe 19, which is coaxially sleeved on the top of the rotating shaft 2. The connecting pipe 19 passes through the top of the tank 1 and is rotatably connected to the tank 1. The connecting pipe 19 is also rotatably connected to the rotating shaft 2, ensuring the stability of the rotating shaft 2 without affecting its normal rotation. A ring-shaped receiving groove 23 with an open top is provided at the bottom of the connecting pipe 19. Multiple through holes 24 are arranged at intervals at the bottom of the receiving groove 23. The receiving groove 23 is fixed to the connecting pipe 19 by a connecting frame. After the raw material falls into the tank 1 from the feeding pipe 25, it will fall into the receiving groove 23. As the connecting pipe 19 drives the receiving groove 23 to rotate, the raw material can pass through the through holes 24 and fall evenly, thereby improving the mixing efficiency of the raw material in the tank 1.

[0031] A first gear 20 is coaxially mounted on the top of the connecting pipe 19. A second gear 21 meshes with the side of the first gear 20. A second drive motor 22 is mounted on the second gear 21 and is fixed to the top of the tank body 1 by a bracket to provide power for the rotation of the connecting pipe 19.

[0032] like Figure 2 and Figure 5 As shown, the rotating shaft 2 is a hollow tube with an opening at the bottom. The bottom of the rotating shaft 2 passes through the bottom of the tank 1 and is equipped with a conveying pipe 4. The rotating shaft 2 is rotatably connected to the tank 1. A first branch pipe 5 and a second branch pipe 6 are connected to the other end of the conveying pipe 4. The other end of the first branch pipe 5 and the other end of the second branch pipe 6 are both connected to one end of the conduit 7. The other end of the conduit 7 is located in the hydraulic oil tank 8. The hydraulic oil tank 8 is located on one side of the tank 1, and the end of the conduit 7 is located at the bottom of the hydraulic oil tank 8. A first conveying pump 9 is installed on the first branch pipe 5, and a first solenoid valve 10 is also installed on the first branch pipe 5. A second conveying pump 11 is installed on the second branch pipe 6, and a second solenoid valve 12 is also installed on the second branch pipe 6, allowing the hydraulic oil in the hydraulic oil tank 8 to flow repeatedly between the rotating shaft 2 and the hydraulic oil tank 8.

[0033] Furthermore, a filling pipe 17 is installed on one side of the top of the hydraulic oil tank 8 to allow hydraulic oil to be removed and added to the hydraulic oil tank 8, facilitating subsequent cleaning of the hydraulic oil tank 8.

[0034] As hydraulic oil flows in and out of the rotating shaft 2, multiple spaced-apart connecting seats 13 are installed on the rotating shaft 2. Each connecting seat 13 is a hollow shell and is connected to the rotating shaft 2. Several spaced-apart sleeves 14 are installed on the side of each connecting seat 13, communicating with the connecting seat 13. A stirring rod 15 is built into the other end of each sleeve 14. A piston 16 is installed on the end of the stirring rod 15 inside the sleeve 14, with the outer wall of the piston 16 tightly against the inner wall of the sleeve 14. The hydraulic oil in the rotating shaft 2 flows into the sleeve 14. As the hydraulic oil continuously flows into the sleeve 14, it pushes the piston 16. As the rotating shaft 2 is drawn back into the hydraulic oil tank 8, the pressure difference inside and outside the sleeve 14 will cause the piston 16 to pull the stirring rod 15 back into the sleeve 14. In this way, during the stirring of the raw materials, the stirring rod 15 can reciprocate and extend on the sleeve 14, changing the range of action of the stirring rod 15 and allowing the stirring rod 15 to fully act on the raw materials.

[0035] Specifically, when the stirring rod 15 retracts into the sleeve 14, it concentrates its force on the raw material near the rotating shaft 2, and exerts a force on the raw material that moves towards the inner wall of the tank 1. Subsequently, the stirring rod 15 extends outward, allowing it to contact and act on the raw material moving towards the inner wall of the outer tank 1. This enhances the mixing efficiency of the stirring rod 15. To further enhance the mixing effect, several stirring blades are installed on the end of the stirring rod 15 away from the sleeve 14 during actual use. This allows the stirring blades to act on more raw material during rotation, increasing the range of action of the stirring blades and improving the processing efficiency of cyclohexanone cyanohydrin.

[0036] To ensure the stability of the stirring rod 15 within the sleeve 14, the inner diameter of the end of the sleeve 14 furthest from the connecting seat 13 is smaller than the inner diameter of the sleeve 14, and the outer wall of the stirring rod 15 is fitted with the inner wall of the sleeve 14 with a clearance.

[0037] It should be noted that, as Figure 3 As shown, several heating plates 18 are installed on the inner wall of the tank 1 at intervals to heat the raw materials in the tank 1, so as to improve the mixing and reaction efficiency between the raw materials. In addition, a temperature sensor is installed at the bottom of the tank 1 to monitor the temperature inside the tank 1, so as to ensure that the temperature is suitable during the mixing and reaction of the raw materials.

[0038] Specifically, such as Figure 1 As shown, a control box 26 is installed on the outer wall of the tank 1. The control box 26 contains a controller. The controller is connected to the first drive motor 3, the first delivery pump 9, the first solenoid valve 10, the second delivery pump 11, the second solenoid valve 12, the temperature sensor, the heating plate 18, and the second drive motor 22 via wires. In actual use, the controller is one of the following: a PLC logic controller, a control motherboard, or a control host.

[0039] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A reaction vessel for processing cyclohexanone cyanohydrin, comprising a tank body (1), wherein at least three spaced-apart support legs are installed along the bottom edge of the tank body (1), characterized in that: Inside the tank (1), there is a rotating shaft (2). The top of the rotating shaft (2) passes through the top of the tank (1) and is connected to a first drive motor (3). The first drive motor (3) is fixed to the tank (1) by a bracket, and the rotating shaft (2) is rotatably connected to the tank (1) by a connector. The rotating shaft (2) is a hollow tube with an opening at the bottom. The bottom of the rotating shaft (2) passes through the bottom of the tank (1) and is equipped with a conveying pipe (4). The rotating shaft (2) is rotatably connected to the tank (1). The other end of the conveying pipe (4) is connected to the first branch pipe (5) and the second branch pipe (6). The other end of the first branch pipe (5) and the other end of the second branch pipe (6) are connected to one end of the conduit (7). The other end of the conduit (7) is located in the hydraulic oil tank (8). The hydraulic oil tank (8) is located on one side of the tank (1). The end of the conduit (7) is located at the bottom of the hydraulic oil tank (8). A first delivery pump (9) is installed on the first branch pipe (5), and a first solenoid valve (10) is also installed on the first branch pipe (5). A second delivery pump (11) is installed on the second branch pipe (6), and a second solenoid valve (12) is also installed on the second branch pipe (6). Multiple spaced connecting seats (13) are installed on the rotating shaft (2). The connecting seats (13) are hollow shells and are connected to the rotating shaft (2). Several spaced sleeves (14) are installed on the side of the connecting seats (13). The sleeves (14) are connected to the connecting seats (13). A stirring rod (15) is built into the other end of the sleeve (14). Several stirring blades are installed on the end of the stirring rod (15) away from the sleeve (14). A piston (16) is installed on the end of the stirring rod (15) inside the sleeve (14). The outer wall of the piston (16) is in close contact with the inner wall of the sleeve (14).

2. The reaction vessel for processing cyclohexanone cyanohydrin according to claim 1, characterized in that: The inner diameter of the end of the sleeve (14) away from the connecting seat (13) is smaller than the inner diameter of the sleeve (14), and the outer wall of the stirring rod (15) is in clearance fit with the inner wall of the end of the sleeve (14).

3. The reaction vessel for processing cyclohexanone cyanohydrin according to claim 1, characterized in that: A control box (26) is installed on the outer wall of the tank (1). A controller is installed inside the control box (26). The controller is connected to the first drive motor (3), the first delivery pump (9), the first solenoid valve (10), the second delivery pump (11), and the second solenoid valve (12) respectively via wires.

4. The reaction vessel for processing cyclohexanone cyanohydrin according to claim 2, characterized in that: Several heating plates (18) are installed on the inner wall of the tank (1) at intervals, and a temperature sensor is installed at the bottom of the tank (1). The temperature sensor and the heating plates (18) are connected to the controller through wires.

5. The reaction vessel for processing cyclohexanone cyanohydrin according to claim 2, characterized in that: The connector includes a connecting pipe (19), which is coaxially sleeved on the top of the rotating shaft (2). The connecting pipe (19) passes through the top of the tank (1) and is rotatably connected to the tank (1). The connecting pipe (19) is also rotatably connected to the rotating shaft (2). A ring-shaped receiving groove (23) with an open top is provided at the bottom of the connecting pipe (19). Multiple through holes (24) are arranged at intervals at the bottom of the receiving groove (23). The receiving groove (23) is fixed to the connecting pipe (19) by a connecting frame. A first gear (20) is coaxially mounted on the top of the connecting pipe (19). A second gear (21) meshes with the side of the first gear (20). A second drive motor (22) is mounted on the second gear (21). The second drive motor (22) is connected to the controller through a wire and is fixed on the top of the tank (1) by a bracket.

6. The reaction vessel for processing cyclohexanone cyanohydrin according to claim 1, characterized in that: A feeding pipe (25) is installed on the top side of the tank (1), and a discharge pipe (27) is installed on the bottom side of the tank (1).

7. The reaction vessel for processing cyclohexanone cyanohydrin according to claim 1, characterized in that: A filler pipe (17) is installed on the top side of the hydraulic oil tank (8).

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