1, 4-butenediol hydrogenation catalyst preparation tank

Abstract

The utility model discloses a 1, 4-butenediol hydrogenation catalyst preparation tank which comprises a tank body and a cooling box, the top surface of the tank body is rotatably connected with a main shaft pipe in a penetrating manner, and the surface of the main shaft pipe is connected with a stirring pipe in a penetrating manner. The device has the beneficial effects that the main shaft pipe and the stirring pipe are adopted, and the gas outlet is formed in the surface of the stirring pipe, so that when the 1, 4-butylene glycol hydrogenation catalyst is prepared, raw materials can be added into the tank body, then the driving motor can be started to drive the driving gear to rotate, the driven gear is driven to rotate, the main shaft pipe is driven to rotate, and the stirring pipe is driven to rotate; meanwhile, a valve on the surface of a gas supplementing pipe is opened, hydrogen is injected into a first connecting pipe along the gas supplementing pipe, a gas conveying pump injects the hydrogen into a main shaft pipe, the hydrogen is discharged along a gas outlet, the hydrogen is uniformly distributed into the raw materials along with rotation of a stirring pipe, gas injection and stirring are conducted synchronously, and the dispersion efficiency is improved; the preparation efficiency is further improved.

Description

Technical Field

[0001] This utility model relates to the field of butenyl glycol production technology, specifically to a 1,4-butenyl glycol hydrogenation catalyst preparation tank. Background Technology

[0002] 1,4-Butynediol and its hydrogenation products include the selectively semi-hydrogenated product—1,4-butenediol (abbreviated as butenediol or B2D) and the fully hydrogenated product—1,4-butanediol (abbreviated as butanediol or BDO). The main production process of 1,4-butenediol includes the 1,4-butyne semi-hydrogenation method. The 1,4-butyne semi-hydrogenation process mainly includes decolorization treatment, semi-hydrogenation treatment, concentration, distillation, and rectification steps. After decolorization treatment, 1,4-butynediol is put into a hydrogenation reactor, and then palladium chloride catalyst is added. Hydrogen gas is introduced to carry out the hydrogenation reaction, and the heating temperature is maintained at about 75°C. Among them, temperature control is very important. Theoretically, the hydrogenation reaction of 1,4-butynediol can be carried out within the range of 60-120°C.

[0003] A search revealed application CN202410007810.3, entitled "A Reactor for Continuous Hydrogenation Catalysis in the Production of 1,4-Butenediol." This application proposes that higher temperatures lead to stronger catalyst activity, resulting in an increased reaction rate and exacerbating the deep hydrogenation of 1,4-butenediol, thus increasing the co-production of 1,4-butenediol. Directly cooling the reactor would reduce the reaction rate. The proposed solution involves controlling the rotation of the stirring blades while simultaneously tilting the reactor at a certain angle to increase the reaction rate. Furthermore, the system automatically cools the circulating hydrogen gas based on the reactor's internal temperature. The process involves maintaining a suitable temperature within the reactor to ensure optimal conditions. When product preparation is required, hydrogen is pumped into the reactor by a hydrogen circulation component. A stirring component drives the stirring blades, and a reciprocating oscillating mechanism deflects the blades at a certain angle to increase the reaction rate. However, this application uses a bottom-feeding gas distribution plate, which has limited stirring effect. Relying solely on blade deflection makes it difficult to improve the uniformity of hydrogen distribution. Furthermore, the blade deflection structure is complex, which can lead to raw material residue adhesion and affect subsequent cleaning. Further improvements are needed.

[0004] There are currently no effective solutions to the problems in the relevant technologies. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this invention provides a 1,4-butenediol hydrogenation catalyst preparation tank, which has the advantages of high working efficiency and simple structure, thereby solving the problems mentioned in the background technology.

[0007] (II) Technical Solution

[0008] To achieve the aforementioned advantages of high work efficiency and simple structure, the specific technical solution adopted by this utility model is as follows:

[0009] A 1,4-butenediol hydrogenation catalyst preparation tank includes a tank body and a cooling box. A main shaft tube is rotatably connected through the top surface of the tank body, and a stirring tube is connected through the surface of the main shaft tube. The stirring tube has a gas outlet. A lifting platform is fixedly connected above the tank body to the surface of the main shaft tube. A drive motor and a gas pump are fixedly mounted on the top surface of the lifting platform, and a drive gear is installed at the output end of the drive motor. A driven gear is fixedly connected to the top surface of the main shaft tube, and the driven gear meshes with the drive gear. A gas outlet is provided through the top surface of the main shaft tube. A gas supply pipe is rotatably connected via a rotary connector. The other end of the gas supply pipe is connected to the outlet of the gas pump, and the inlet of the gas pump is connected to a first connecting pipe. A make-up gas pipe is connected to the surface of the first connecting pipe. A cooling box is installed on one side of the tank, and a spiral tube is installed inside the cooling box. The top of the spiral tube is connected to the bottom of the first connecting pipe. A second connecting pipe is connected to the bottom of the spiral tube, and the other end of the second connecting pipe is connected to the top of the tank. An electric cylinder is vertically installed between the lifting platform and the top surface of the tank.

[0010] Furthermore, the two ends of the electric cylinder are fixedly connected to the bottom surface of the lifting platform and the top surface of the tank, respectively, and a guide rod is fixedly installed on the top surface of the tank, and the guide rod passes through the lifting platform and is slidably connected to the lifting platform.

[0011] Furthermore, a one-way valve is installed on the surface of the spindle tube, and the one-way valve is installed in the direction in which hydrogen enters the spindle tube.

[0012] Furthermore, a discharge port is continuously connected to the bottom surface of the tank, and a valve is installed on the surface of the discharge port; and a feeding port is continuously connected to the top surface of the tank.

[0013] Furthermore, a valve is installed on the surface of the gas supply pipe, and the gas supply pipe is connected to a hydrogen storage device.

[0014] Furthermore, a drain pipe is connected through the top surface of the cooling tank, and an inlet pipe is connected through the bottom surface of the cooling tank. The inlet pipe and the drain pipe are respectively connected through to the output end and the input end of the coolant circulation cooling device.

[0015] Furthermore, the main shaft tube is rotatably connected to the top surface of the tank via a linear bearing, and the main shaft is arranged coaxially with the tank.

[0016] Furthermore, a sleeve is fixedly connected to the top surface of the tank outside the main shaft tube, and a sealing sleeve is fixedly connected to the inner wall of the sleeve, with the inner wall of the sealing sleeve abutting against the main shaft tube.

[0017] (III) Beneficial Effects

[0018] Compared with the prior art, this utility model provides a 1,4-butenediol hydrogenation catalyst preparation tank, which has the following beneficial effects:

[0019] (1) This utility model adopts a main shaft tube and a stirring tube. The stirring tube has an outlet. When preparing the 1,4-butenediol hydrogenation catalyst, the raw materials can be added into the tank. Then, the drive motor can be started to drive the drive gear to rotate, which in turn drives the driven gear to rotate, drives the main shaft tube to rotate, drives the stirring tube to rotate, stirs the raw materials inside the tank, and accelerates the preparation process. At the same time, the valve on the surface of the gas supply pipe is opened, and hydrogen is injected into the first connecting pipe along the gas supply pipe. The gas pump injects hydrogen into the main shaft tube, and the hydrogen is discharged along the outlet. As the stirring tube rotates, it is evenly distributed into the raw materials. Gas injection and stirring are carried out simultaneously to improve the dispersion efficiency and thus improve the preparation efficiency.

[0020] (2) This utility model adopts an electric cylinder and a lifting platform. During the mixing and preparation process, the electric cylinder extends and retracts, which drives the lifting platform to rise and fall, thereby driving the main shaft tube to rise and fall, and driving the mixing tube to rise and fall, expanding the mixing range, improving the mixing efficiency, and further improving the preparation efficiency. At the same time, the surface structure of the mixing tube and the main shaft tube is simple, avoiding the problem of complex internal structure and a lot of internal material that is difficult to clean. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the internal structure of a 1,4-butenediol hydrogenation catalyst preparation tank proposed in this utility model.

[0023] Figure 2 This is a front view of a 1,4-butenediol hydrogenation catalyst preparation tank proposed in this utility model;

[0024] Figure 3 This is a schematic diagram of the external structure of a 1,4-butenediol hydrogenation catalyst preparation tank proposed in this utility model.

[0025] Figure 4 This is an enlarged view of node A of a 1,4-butenediol hydrogenation catalyst preparation tank proposed in this utility model.

[0026] In the picture:

[0027] 1. Tank body; 2. Main shaft tube; 3. Stirring tube; 4. Air outlet; 5. One-way valve; 6. Feeding port; 7. Lifting platform; 8. Electric cylinder; 9. Drive motor; 10. Drive gear; 11. Driven gear; 12. Pneumatic rotary connector; 13. Guide rod; 14. Gas supply pipe; 15. Gas pump; 16. First connecting pipe; 17. Cooling box; 18. Spiral tube; 19. Liquid inlet pipe; 20. Liquid outlet pipe; 21. Second connecting pipe; 22. Discharge port; 23. Sleeve; 24. Sealing sleeve; 25. Linear bearing; 26. Air replenishment pipe. Detailed Implementation

[0028] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0029] According to an embodiment of the present invention, a 1,4-butenediol hydrogenation catalyst preparation vessel is provided.

[0030] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments, such as... Figure 1-4As shown, a 1,4-butenediol hydrogenation catalyst preparation tank according to an embodiment of the present invention includes a tank body 1 and a cooling box 17. A main shaft tube 2 is rotatably connected through the top surface of the tank body 1, and a stirring tube 3 is connected through the surface of the main shaft tube 2. Multiple sets of stirring tubes 3 are arranged, and multiple sets of gas outlets 4 are opened on the surface of the stirring tube 3. A lifting platform 7 is fixedly connected above the tank body 1 on the surface of the main shaft tube 2, and a drive motor 9 and a gas pump 15 are fixedly installed on the top surface of the lifting platform 7. A drive gear 10 is installed at the output end of the drive motor 9, and a driven gear is fixedly connected to the top surface of the main shaft tube 2. 11, and the driven gear 11 meshes with the driving gear 10, and the top surface of the main shaft tube 2 is rotatably connected to the air supply pipe 14 through the air rotary connector 12. The other end of the air supply pipe 14 is connected to the air outlet of the air supply pump 15, and the air inlet of the air supply pump 15 is connected to the first connecting pipe 16. The surface of the first connecting pipe 16 is connected to the air supply pipe 26. A cooling box 17 is installed on one side of the tank body 1, and a spiral tube 18 is installed inside the cooling box 17. The top end of the spiral tube 18 is connected to the bottom end of the first connecting pipe 16, and the bottom end of the spiral tube 18 is connected to the second connecting pipe 21. One end is connected to the top of the tank 1. An electric cylinder 8 is vertically installed between the lifting platform 7 and the top surface of the tank 1. Cooling liquid is injected into the cooling box 17 to cool the hydrogen. A gas outlet 4 is opened on the surface of the stirring tube 3. When preparing the 1,4-butenediol hydrogenation catalyst, the raw materials can be added into the tank 1. Then, the drive motor 9 can be started to drive the drive gear 10 to rotate, which in turn drives the driven gear 11 to rotate, which drives the main shaft tube 2 to rotate, which drives the stirring tube 3 to rotate, stirring the raw materials inside the tank 1 and accelerating the preparation process. At the same time, the valve on the surface of the gas supply pipe 26 is opened, and hydrogen is injected into the first gas supply pipe 26. In a connecting pipe 16, a gas pump 15 injects hydrogen into the main shaft pipe 2. The hydrogen is discharged through the outlet 4 and evenly distributed into the raw materials as the stirring pipe 3 rotates. Gas injection and stirring are carried out simultaneously to improve dispersion efficiency and thus improve preparation efficiency. At the same time, during the stirring and preparation process, the electric cylinder 8 extends and retracts, driving the lifting platform 7 to rise and fall, which in turn drives the main shaft pipe 2 to rise and fall, and the stirring pipe 3 to rise and fall, expanding the stirring range and improving stirring efficiency, further improving preparation efficiency. Meanwhile, the surface structure of the stirring pipe 3 and the main shaft pipe 2 is simple, avoiding the problem of complex internal structure of the tank 1 and the difficulty in cleaning due to the large amount of material adhering inside.

[0031] In one embodiment, the two ends of the electric cylinder 8 are fixedly connected to the bottom surface of the lifting platform 7 and the top surface of the tank 1, respectively. A guide rod 13 is fixedly installed on the top surface of the tank 1, and the guide rod 13 passes through the lifting platform 7 and is slidably connected to the lifting platform 7. The guide rod 13 guides the lifting of the lifting platform 7 and improves the stability of the lifting.

[0032] In one embodiment, a one-way valve 5 is installed on the surface of the spindle tube 2, and the one-way valve 5 is installed in the direction that hydrogen enters the spindle tube 2, so as to prevent material from entering the spindle tube 2.

[0033] In one embodiment, a discharge port 22 is connected through the bottom surface of the tank body 1, and a valve is installed on the surface of the discharge port 22. A feeding port 6 is connected through the top surface of the tank body 1, and a sealing cap is spirally fitted on the top surface of the feeding port 6 to facilitate discharge and feeding.

[0034] In one embodiment, a valve is installed on the surface of the gas supply pipe 26, and the gas supply pipe 26 is connected to a hydrogen storage device to facilitate the replenishment of hydrogen.

[0035] In one embodiment, a drain pipe 20 is connected through the top surface of the cooling tank 17, and an inlet pipe 19 is connected through the bottom surface of the cooling tank 17. The inlet pipe 19 and the drain pipe 20 are respectively connected through to the output end and the input end of the coolant circulation cooling device, which is a common circulation cooling device, not shown in the figure.

[0036] In one embodiment, the main shaft tube 2 is rotatably connected to the top surface of the tank body 1 via a linear bearing 25, and the main shaft is arranged coaxially with the tank body 1 to facilitate the movement of the main shaft tube 2.

[0037] In one embodiment, a sleeve 23 is fixedly connected to the top surface of the tank body 1 outside the main shaft tube 2, and a sealing sleeve 24 is fixedly connected to the inner wall of the sleeve 23, and the inner wall of the sealing sleeve 24 abuts against the main shaft tube 2 to improve the sealing performance.

[0038] Working principle:

[0039] In the preparation of the 1,4-butenediol hydrogenation catalyst, the raw materials can be added into the tank 1. Then, the drive motor 9 can be started to drive the drive gear 10 to rotate, which in turn drives the driven gear 11 to rotate, which in turn drives the main shaft tube 2 to rotate, and drives the stirring tube 3 to rotate, stirring the raw materials inside the tank 1 and accelerating the preparation process. At the same time, the valve on the surface of the gas supply pipe 26 is opened, and hydrogen is injected into the first connecting pipe 16 along the gas supply pipe 26. The gas pump 15 injects hydrogen into the main shaft tube 2, and the hydrogen is discharged along the gas outlet 4. With the rotation of the stirring tube 3, it is evenly distributed into the raw materials. Gas injection and stirring are carried out simultaneously to improve dispersion efficiency, thereby improving preparation efficiency. At the same time, during the stirring and preparation process, the electric cylinder 8 extends and retracts, driving the lifting platform 7 to rise and fall, which in turn drives the main shaft tube 2 to rise and fall, and drives the stirring tube 3 to rise and fall, expanding the stirring range and improving stirring efficiency, further improving preparation efficiency. Meanwhile, the surface structure of the stirring tube 3 and the main shaft tube 2 is simple, avoiding the problem of complex internal structure of the tank 1 and the difficulty in cleaning due to the large amount of material adhering inside.

[0040] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0041] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A preparation vessel for a 1,4-butenediol hydrogenation catalyst, characterized in that, The system includes a tank (1) and a cooling box (17). A main shaft tube (2) is rotatably connected through the top surface of the tank (1), and a stirring tube (3) is rotatably connected through the surface of the main shaft tube (2). An air outlet (4) is provided on the surface of the stirring tube (3). A lifting platform (7) is fixedly connected above the tank (1) on the surface of the main shaft tube (2). A drive motor (9) and an air pump (15) are fixedly installed on the top surface of the lifting platform (7). A drive gear (10) is installed at the output end of the drive motor (9). A driven gear (11) is fixedly connected to the top surface of the main shaft tube (2), and the driven gear (11) meshes with the drive gear (10). The top surface of the main shaft tube (2) is rotatably connected through a pneumatic rotary connector (12). A gas supply pipe (14) is connected to the gas outlet of a gas pump (15), and a first connecting pipe (16) is connected to the gas inlet of the gas pump (15). A gas supply pipe (26) is connected to the surface of the first connecting pipe (16). A cooling box (17) is installed on one side of the tank (1), and a spiral tube (18) is installed inside the cooling box (17). The top of the spiral tube (18) is connected to the bottom of the first connecting pipe (16). A second connecting pipe (21) is connected to the bottom of the spiral tube (18), and the other end of the second connecting pipe (21) is connected to the top of the tank (1). An electric cylinder (8) is vertically installed between the lifting platform (7) and the top surface of the tank (1).

2. The 1,4-butenediol hydrogenation catalyst preparation tank according to claim 1, characterized in that, The electric cylinder (8) is fixedly connected at both ends to the bottom surface of the lifting platform (7) and the top surface of the tank (1), and a guide rod (13) is fixedly installed on the top surface of the tank (1), and the guide rod (13) passes through the lifting platform (7) and is slidably connected to the lifting platform (7).

3. The 1,4-butenediol hydrogenation catalyst preparation tank according to claim 1, characterized in that, A one-way valve (5) is installed on the surface of the spindle tube (2), and the one-way valve (5) is installed in the direction in which hydrogen enters the spindle tube (2).

4. The 1,4-butenediol hydrogenation catalyst preparation vessel according to claim 1, characterized in that, The bottom surface of the tank (1) is connected to a discharge port (22), and a valve is installed on the surface of the discharge port (22). The top surface of the tank (1) is connected to a feeding port (6).

5. The 1,4-butenediol hydrogenation catalyst preparation tank according to claim 1, characterized in that, The gas supply pipe (26) is equipped with a valve on its surface and is connected to a hydrogen storage device.

6. The 1,4-butenediol hydrogenation catalyst preparation tank according to claim 1, characterized in that, The top surface of the cooling tank (17) is connected to a drain pipe (20), and the bottom surface of the cooling tank (17) is connected to an inlet pipe (19). The inlet pipe (19) and the drain pipe (20) are respectively connected to the output end and the input end of the cooling liquid circulation cooling device.

7. The 1,4-butenediol hydrogenation catalyst preparation tank according to claim 1, characterized in that, The main shaft tube (2) is rotatably connected to the top surface of the tank body (1) via a linear bearing (25), and the main shaft is arranged coaxially with the tank body (1).

8. The 1,4-butenediol hydrogenation catalyst preparation tank according to claim 1, characterized in that, The top surface of the tank (1) is fixedly connected to a sleeve (23) outside the main shaft tube (2), and a sealing sleeve (24) is fixedly connected to the inner wall of the sleeve (23), and the inner wall of the sealing sleeve (24) abuts against the main shaft tube (2).

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