A regeneration recovery device for a pta oxidation catalyst

Abstract

The utility model belongs to PTA oxidation catalyst technical field, concretely speaking it is a kind of PTA oxidation catalyst's regeneration recovery device, including bottom plate, the upper surface of bottom plate is fixedly connected with support frame, the inside fixedly connected with settling barrel of support frame, the outer wall of settling barrel is provided with feed inlet, the inner wall slidingly connected with collection sieve of settling barrel, the top of collection sieve is fixedly connected with support rod, the top of support rod is fixedly connected with top plate, the outer wall slidingly connected in the inner wall of settling barrel of top plate, the outer wall fixedly connected with support frame of settling barrel, the inside rotationally connected with threaded rod of support frame, through the lifting movement of collection sieve, it is convenient for the use personnel to the catalyst solid particles filtered in it to carry out recovery collection, and then it is favorable to improve particle collection efficiency, reduce artificial cleaning difficulty and labour intensity.

Description

Technical Field

[0001] This invention belongs to the field of PTA oxidation catalyst technology, specifically a PTA oxidation catalyst regeneration and recovery device. Background Technology

[0002] In the production of PTA (purified terephthalic acid), the oxidation reaction requires catalysts primarily composed of cobalt, manganese, and bromides to enhance reaction efficiency. However, after repeated use, these catalysts gradually deactivate due to factors such as organic carbon buildup, impurity poisoning, and changes in metal valence states. Direct disposal not only wastes precious metal resources like cobalt and manganese but also increases production costs and environmental impact. Furthermore, traditional catalyst regeneration and recycling technologies suffer from low efficiency, high energy consumption, insufficient metal recovery rates, and equipment corrosion, failing to meet the demands of modern green chemical engineering and the development of a circular economy. Against this backdrop, developing efficient, low-energy-consumption, and environmentally friendly PTA oxidation catalyst regeneration and recycling devices to restore catalyst activity and recycle metal resources has become a key technological requirement for PTA producers to reduce costs, enhance competitiveness, and implement sustainable development.

[0003] The mother liquor containing deactivated catalyst particles enters the settling tank. Under the action of gravity, the particles settle to the bottom of the tank. The collecting screen (porous structure) in the tank intercepts the particles to form a filter cake, and the clear liquid overflows from the top through the screen holes.

[0004] However, in the existing technology of PTA oxidation catalyst regeneration and recovery sedimentation, the collection screen is mostly fixed, which means that when the operator recovers the filtered catalyst solid particles, he / she needs to use tools to reach into the sedimentation tank to clean them. The operating space is limited and the process is cumbersome, which easily leads to long particle collection time and low efficiency. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art and solve at least one of the technical problems mentioned in the background art, this utility model proposes a regeneration and recovery device for PTA oxidation catalyst.

[0006] The technical solution adopted by this utility model to solve its technical problem is:

[0007] A regeneration and recovery device for PTA oxidation catalyst includes a base plate; a support frame is fixedly connected to the upper surface of the base plate; a settling tank is fixedly connected inside the support frame; a feed inlet is provided on the outer wall of the settling tank; a collecting screen is slidably connected to the inner wall of the settling tank; a support rod is fixedly connected to the top of the collecting screen; a top plate is fixedly connected to the top of the support rod; the outer wall of the top plate is slidably connected to the inner wall of the settling tank; a support frame is fixedly connected to the outer wall of the settling tank; a threaded rod is rotatably connected inside the support frame; the outer wall of the threaded rod is rotatably connected to the inside of the support frame; an internally threaded slider is threadedly connected to the outer wall of the threaded rod; an L-shaped connecting block is fixedly connected to the outer wall of the internally threaded slider; the outer wall of the L-shaped connecting block is slidably connected to the inside of the support frame; the outer wall of the L-shaped connecting block is fixedly connected to the inside of the top plate; and a rotating assembly is provided on the outer wall of the support frame.

[0008] Preferably, the rotating assembly includes a motor, the outer wall of which is fixedly connected to the outer wall of the support frame, the output end of which is rotatably connected to the inside of the support frame and fixedly connected to a worm gear, the outer wall of which is rotatably connected to the inside of the support frame, the tooth end of which is meshed with a worm wheel, and the inner wall of which is fixedly connected to the outer wall of the threaded rod.

[0009] Preferably, the bottom end of the settling tank is fixedly connected to a discharge port, and the outer wall of the discharge port is provided with a solenoid valve.

[0010] Preferably, the inner wall of the discharge port is rotatably connected to a movable discharge pipe, the outer wall of the movable discharge pipe is fixedly connected to a limit ring, and the inner wall of the discharge port is provided with a limit groove.

[0011] Preferably, the inner wall of the discharge port is provided with a limiting groove, and the outer wall of the limiting ring is rotatably connected to the inner wall of the limiting groove.

[0012] Preferably, a second motor is fixedly connected to the outer wall of the discharge port, and a gear is fixedly connected to the output end of the second motor, with the tooth end of the gear meshing with the tooth end of the gear ring.

[0013] The beneficial effects of this utility model are:

[0014] 1. This utility model provides a regeneration and recovery device for PTA oxidation catalyst. By lifting and moving the collection screen, it is convenient for users to recover and collect the solid catalyst particles filtered inside, thereby improving particle collection efficiency and reducing the difficulty and labor intensity of manual cleaning. In addition, when it is necessary to clean, repair or replace the collection screen, raising it can provide operators with a safer and more convenient operating space and reduce equipment maintenance time.

[0015] 2. This utility model provides a regeneration and recovery device for PTA oxidation catalyst. By rotating the movable discharge pipe, the angle of the movable discharge pipe can be adjusted. By flexibly adjusting the discharge angle, it can be better matched with the inlet position of the next stage. Quick docking can be achieved by adjusting the angle without modifying the equipment, which significantly reduces the modification cost and debugging time, improves compatibility and scalability, and increases the flexibility of operation. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and are used to explain the present invention, but do not constitute an undue limitation of the present invention.

[0017] In the attached diagram:

[0018] Figure 1 This is a perspective view of the present invention;

[0019] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0020] Figure 3 This is a perspective view of the settling tank in this utility model;

[0021] Figure 4 This is a perspective view of the movable discharge pipe in this utility model;

[0022] Figure 5 This is a cross-sectional view of the internal structure of the discharge port in this utility model.

[0023] Legend:

[0024] 1. Base plate; 2. Support frame; 3. Settling tank; 4. Threaded rod; 5. Support frame; 6. Internal threaded slider; 7. L-shaped connecting block; 8. Top plate; 9. Support rod; 10. Collection screen; 11. Feed inlet; 12. Motor 1; 13. Worm gear; 14. Worm wheel; 15. Discharge port; 16. Solenoid valve; 17. Movable discharge pipe; 18. Limiting groove; 19. Limiting ring; 20. Motor 2; 21. Gear; 22. Gear ring. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0026] Specific implementation examples are given below.

[0027] Please see Figure 1 - Figure 3 This utility model provides a regeneration and recovery device for PTA oxidation catalyst, including a base plate 1; a support frame 2 is fixedly connected to the upper surface of the base plate 1, a settling tank 3 is fixedly connected inside the support frame 2, a feed inlet 11 is provided on the outer wall of the settling tank 3, a collecting screen 10 is slidably connected to the inner wall of the settling tank 3, a support rod 9 is fixedly connected to the top of the collecting screen 10, a top plate 8 is fixedly connected to the top of the support rod 9, the outer wall of the top plate 8 is slidably connected to the inner wall of the settling tank 3, a support frame 5 is fixedly connected to the outer wall of the settling tank 3, a threaded rod 4 is rotatably connected inside the support frame 5, and the outer wall of the threaded rod 4 is rotatably connected to the support frame 5. Inside the frame 2, the outer wall of the threaded rod 4 is threadedly connected to an internally threaded slider 6. An L-shaped connecting block 7 is fixedly connected to the outer wall of the internally threaded slider 6. The outer wall of the L-shaped connecting block 7 is slidably connected to the inside of the support frame 5. The outer wall of the L-shaped connecting block 7 is fixedly connected to the inside of the top plate 8. A rotating assembly is provided on the outer wall of the support frame 2. Specifically, the base plate 1 serves as the basic support structure of the device, and the fixed installation of the support frame 2 ensures overall stability. The support frame 2 connects the base plate 1 and the settling tank 3, providing vertical support for the settling tank 3 and serving as the mounting carrier for the rotating assembly. The settling tank 3 is the core separation container, containing and completely separating the mother liquor. In the catalyst particle settling process, the feed inlet 11 is used to introduce mother liquor containing deactivated catalyst, which is then transported to the settling tank 3 after the oxidation reaction. The collecting screen 10 intercepts the settling catalyst particles through its porous structure, forming a filter cake to achieve preliminary solid-liquid separation. The support rod 9 connects the collecting screen 10 to the top plate 8, transmitting lifting power to ensure that the collecting screen 10 slides smoothly inside the settling tank 3. The top plate 8 is fixedly connected to the support rod 9 and is linked to the internal threaded slider 6 through the L-shaped connecting block 7, driving the collecting screen 10 to move up and down while sealing the upper space of the settling tank 3. The support frame 5 is fixed to the outer wall of the settling tank 3, and the internal volume... The threaded rod 4 and the internally threaded slider 6, among other transmission components, restrict the movement trajectory of the L-shaped connecting block 7, ensuring transmission stability. The threaded rod 4 passes through the support frame 5 and the support frame 2, and drives the internally threaded slider 6 to move axially through rotation, converting rotational motion into linear motion to achieve the lifting and lowering of the collection screen 10. The internally threaded slider 6 is threadedly engaged with the threaded rod 4 and moves up and down as the threaded rod 4 rotates. Through the L-shaped connecting block 7, it drives the top plate 8 and the collection screen 10 to move synchronously. The L-shaped connecting block 7 connects the internally threaded slider 6 and the top plate 8, transmitting lifting power, and simultaneously slides within the support frame 5 to ensure the accuracy of the top plate 8's movement direction.

[0028] Furthermore, such as Figure 1 , Figure 2 and Figure 3As shown, the rotating assembly includes a motor 12. The outer wall of the motor 12 is fixedly connected to the outer wall of the support frame 2. The output end of the motor 12 is rotatably connected to the inside of the support frame 2 and fixedly connected to a worm gear 13. The outer wall of the worm gear 13 is rotatably connected to the inside of the support frame 2. The tooth end of the worm gear 13 is meshed with a worm wheel 14. The inner wall of the worm wheel 14 is fixedly connected to the outer wall of the threaded rod 4. Specifically, the rotating assembly consists of a motor 12, a worm gear 13, and a worm wheel 14. The motor 12 provides power, which is transmitted to the threaded rod 4 through the worm gear 13 and the worm wheel 14, thereby realizing the automated control of the lifting and lowering of the collecting screen 10 and improving operating efficiency.

[0029] Furthermore, such as Figure 1 As shown, a discharge port 15 is fixedly connected to the bottom of the settling tank 3. A solenoid valve 16 is installed on the outer wall of the discharge port 15. Specifically, the discharge port 15 serves as the bottom discharge channel of the settling tank 3, used to discharge the clear liquid after settling, and connect to subsequent filtration, regeneration and other processes. The solenoid valve 16 is installed on the outer wall of the discharge port 15 and controls the opening and closing of the valve through an electrical signal to precisely adjust the timing and flow rate of discharge.

[0030] Furthermore, such as Figure 4 and Figure 5 As shown, a movable discharge pipe 17 is rotatably connected to the inner wall of the discharge port 15. A limiting ring 19 is fixedly connected to the outer wall of the movable discharge pipe 17. A limiting groove 18 is opened on the inner wall of the discharge port 15. Specifically, the limiting groove 18 on the inner wall of the discharge port 15 cooperates with the limiting ring 19 on the outer wall of the movable discharge pipe 17, so that the movable discharge pipe 17 can rotate within the discharge port 15 to adjust the discharge angle, while restricting its axial movement to ensure the flexibility and stability of the angle adjustment.

[0031] Furthermore, such as Figure 4 and Figure 5 As shown, a limiting groove 18 is provided on the inner wall of the discharge port 15, and the outer wall of the limiting ring 19 is rotatably connected to the inner wall of the limiting groove 18. Specifically, the axial movement of the limiting ring 19 is constrained by the groove wall of the limiting groove 18, while allowing the movable discharge pipe 17 to rotate around the axis of the settling tank 3, so as to realize the flexible adjustment of the discharge angle and ensure that the discharge direction is accurately connected with the next stage equipment.

[0032] Furthermore, such as Figure 4 and Figure 5 As shown, a second motor 20 is fixedly connected to the outer wall of the discharge port 15. A gear 21 is fixedly connected to the output end of the second motor 20. The tooth end of the gear 21 meshes with the tooth end of the gear ring 22. Specifically, the second motor 20 on the outer wall of the discharge port 15 drives the movable discharge pipe 17 to rotate through the meshing transmission of the gear 21 and the gear ring 22, thereby realizing the automatic adjustment of the discharge angle. This can accurately match the feeding requirements of the next stage equipment, improve the flexibility and efficiency of the process connection, and reduce manual intervention.

[0033] Working principle: After the oxidation reaction, the mother liquor enters the settling tank 3 through the feed inlet 11. After entering the settling tank 3, it is intercepted by the collecting screen 10. The catalyst solid particles in the mother liquor after the oxidation reaction will remain inside the collecting screen 10. After a certain amount of catalyst solid particles accumulate inside the collecting screen 10, they need to be collected. At this time, the motor 12 is started. The start of the motor 12 causes the worm gear 13 to rotate inside the support frame 2. During the rotation of the worm gear 13, it drives the worm wheel 14 to rotate. The rotation of the worm wheel 14 drives the threaded rod 4 to rotate inside the support frame 2 and the support frame 5. During the rotation of the threaded rod 4, the internal threaded slider 6 moves upward. The upward movement of the internal threaded slider 6 drives the L The connecting block 7 moves upward and slides inside the support frame 5, which in turn drives the internal threaded slider 6 to move upward. The upward movement of the internal threaded slider 6 drives the collecting screen 10 to slide upward on the inner wall of the settling tank 3 via the support rod 9. When the collecting screen 10 moves to a position where it is convenient for the user to recover the catalyst solid particles inside, the starting motor 12 is stopped. The lifting and lowering movement of the collecting screen 10 facilitates the user to recover and collect the catalyst solid particles filtered inside, thereby improving particle collection efficiency and reducing the difficulty and labor intensity of manual cleaning. In addition, when it is necessary to clean, repair or replace the collecting screen 10, raising it can provide the operator with a safer and more convenient operating space and reduce equipment maintenance time.

[0034] When discharging the mother liquor after sedimentation and oxidation, opening the solenoid valve 16 allows the mother liquor to be discharged to the next stage through the discharge port 15 and the movable discharge pipe 17. During this process, the second motor 20 can be started. The start of the second motor 20 causes the gear 21 to rotate, which in turn causes the gear ring 22 to rotate. The rotation of the gear ring 22 drives the limit ring 19 to rotate on the inner wall of the limit groove 18 through the movable discharge pipe 17. The rotation of the movable discharge pipe 17 achieves the effect of adjusting the angle of the movable discharge pipe 17. By flexibly adjusting the discharge angle, it can be better matched with the position of the next stage. Quick docking can be achieved through angle adjustment without modifying the equipment, which significantly reduces the modification cost and debugging time, improves compatibility and scalability, and increases the flexibility of operation.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A regeneration and recovery device for PTA oxidation catalyst, comprising a base plate (1); characterized in that: A support frame (2) is fixedly connected to the upper surface of the base plate (1). A settling tank (3) is fixedly connected inside the support frame (2). An inlet (11) is provided on the outer wall of the settling tank (3). A collecting screen (10) is slidably connected to the inner wall of the settling tank (3). A support rod (9) is fixedly connected to the top of the collecting screen (10). A top plate (8) is fixedly connected to the top of the support rod (9). The outer wall of the top plate (8) is slidably connected to the inner wall of the settling tank (3). A support is fixedly connected to the outer wall of the settling tank (3). The support frame (5) has a threaded rod (4) rotatably connected inside. The outer wall of the threaded rod (4) is rotatably connected to the inside of the support frame (2). The outer wall of the threaded rod (4) is threadedly connected to an internal threaded slider (6). The outer wall of the internal threaded slider (6) is fixedly connected to an L-shaped connecting block (7). The outer wall of the L-shaped connecting block (7) is slidably connected to the inside of the support frame (5). The outer wall of the L-shaped connecting block (7) is fixedly connected to the inside of the top plate (8). The outer wall of the support frame (2) is provided with a rotating component.

2. The PTA oxidation catalyst regeneration and recovery device as described in claim 1, characterized in that: The rotating assembly includes a motor (12), the outer wall of which is fixedly connected to the outer wall of the support frame (2). The output end of the motor (12) is rotatably connected to the inside of the support frame (2) and is fixedly connected to a worm (13). The outer wall of the worm (13) is rotatably connected to the inside of the support frame (2). The tooth end of the worm (13) is meshed with a worm wheel (14). The inner wall of the worm wheel (14) is fixedly connected to the outer wall of the threaded rod (4).

3. The regeneration and recovery device for PTA oxidation catalyst as described in claim 1, characterized in that: The bottom end of the settling tank (3) is fixedly connected to a discharge port (15), and a solenoid valve (16) is provided on the outer wall of the discharge port (15).

4. The PTA oxidation catalyst regeneration and recovery device as described in claim 3, characterized in that: The inner wall of the discharge port (15) is rotatably connected to a movable discharge pipe (17), the outer wall of the movable discharge pipe (17) is fixedly connected to a limit ring (19), and the inner wall of the discharge port (15) is provided with a limit groove (18).

5. The PTA oxidation catalyst regeneration and recovery device as described in claim 4, characterized in that: The inner wall of the discharge port (15) is provided with a limiting groove (18), and the outer wall of the limiting ring (19) is rotatably connected to the inner wall of the limiting groove (18).

6. The PTA oxidation catalyst regeneration and recovery device as described in claim 5, characterized in that: A motor (20) is fixedly connected to the outer wall of the discharge port (15). A gear (21) is fixedly connected to the output end of the motor (20). The tooth end of the gear (21) meshes with the tooth end of the gear ring (22).

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