Spray drying device for laboratory test gas-phase polyethylene catalyst
By introducing a vibrating motor and screening plate into the spray drying device, the poor dispersion problem caused by the agglomeration of catalyst particles is solved, effective dispersion and separation of particles is achieved, and the quality and production efficiency of the catalyst are improved.
Patent Information
- Application Number
- CN202421291404.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-07
- Publication Date
- 2025-02-21
- Estimated Expiration
- 2034-06-07
AI Technical Summary
During the spray drying process, the catalyst particles are prone to agglomeration, resulting in uneven particle size and poor dispersion. It is difficult for existing devices to effectively disperse and screen these agglomerated particles.
A spray drying device including a vibrating motor and a screening plate is designed. The vibration motor drives the fixed plate to vibrate and disperse the agglomerated catalyst particles, and the particle size of the particles is screened using the screening plate to achieve the undispersible agglomerated particles. separation.
The catalyst particles are effectively dispersed, the quality of the particles is improved, and the separation of undispersed agglomerated particles is achieved through the screening plate, simplifying the subsequent particle extraction process.
Smart Images
Figure CN222510678U_ABST
Abstract
Description
Technical Field
[0001] The utility model provides a gas phase polyethylene catalyst spray drying device for laboratory small-scale tests, belonging to the technical field of gas phase polyethylene catalyst preparation. Background Art
[0002] Gas-phase polyethylene catalyst spray drying equipment is often used to spray-dry gas-phase polyethylene catalysts on a laboratory scale to prepare solid catalyst particles for subsequent experiments or production processes. The principle is to inject the catalyst solution into the sprayer, and then atomize the solution into small droplets through the sprayer. Subsequently, these small droplets evaporate rapidly in the air to form solid particles.
[0003] However, during the spraying process, catalyst particles often agglomerate, that is, multiple catalyst particles stick together, resulting in uneven particle size and poor dispersion, which affects the catalytic performance. Existing spray drying devices are not convenient for dispersing agglomerated catalyst particles during drying, and for catalyst particles with tight agglomeration that are difficult to disperse, they must be screened out, which is time-consuming and labor-intensive. Utility Model Content
[0004] The technical problem to be solved by the utility model is that during spray drying, it is inconvenient to disperse the agglomerated catalyst particles, and it is inconvenient to screen and separate the agglomerated catalyst particles that cannot be dispersed.
[0005] In order to solve the above problems, the utility model proposes a technical solution: a spray drying device for laboratory small-scale gas-phase polyethylene catalyst testing, comprising a support leg, the support leg is fixedly connected to a drying box upward, a sprayer is arranged on the drying box, and the lower end of the sprayer is connected to a nozzle located in the drying box; a fixed plate is fixedly arranged in the drying box, a through groove is opened on the upper surface of the fixed plate, a card slot connected to the through groove is opened on the lower surface of the fixed plate, and a screening plate is placed in the card slot; a vibration motor is fixedly arranged at the bottom of the fixed plate; a through hole is opened on the upper surface of the drying box bottom plate, and a groove connected to the through hole is opened on the lower surface of the drying box bottom plate; a sealing plate is arranged in the groove, and a receiving frame located in the drying box is fixedly connected to the sealing plate; the sealing plate is connected to the screening plate through a movable connection structure, and an electric telescopic rod fixedly connected to the sealing plate is arranged below the drying box; a temperature monitoring device is arranged in the drying box, and a temperature regulating device is arranged outside the drying box.
[0006] As an improvement, the movable connection structure includes a spring, a sliding column, and a limit block. The sliding column slides through the sealing plate, and the sliding column is fixedly connected to the screening plate; the limit block is fixedly connected to the lower end of the sliding column; the spring is located between the screening plate and the sealing plate, and the spring is sleeved on the sliding column.
[0007] As an improvement, the temperature monitoring device includes a temperature sensor, and the outer wall of the drying box is provided with a controller connected to the temperature sensor circuit.
[0008] As an improvement, the temperature regulating device includes a hot air blower, which is connected to the controller circuit and communicates with the interior of the drying box through a connecting pipe.
[0009] As an improvement, the drying box is provided with ventilation holes, the fixing plate is fixedly connected with a protection frame, and the through slot is located in the protection frame.
[0010] Beneficial effects of the utility model:
[0011] 1. A vibration motor is fixedly arranged at the bottom of the fixed plate. The vibration motor can drive the fixed plate to vibrate, thereby vibrating and dispersing the agglomerated catalyst particles on the fixed plate to increase the quality of the catalyst particles.
[0012] 2. A screening plate is placed in the slot, which can screen the catalyst particles during vibration. Catalyst particles that meet the particle size and particles dispersed by vibration can enter the receiving frame through the screening plate, thereby completing the separation of agglomerated catalyst particles that cannot be dispersed. At the same time, the sealing plate and the screening plate are connected through a movable connection structure, and the receiving frame and the screening plate can be quickly taken out at the same time through the electric telescopic rod, so as to facilitate the removal of the separated catalyst particles. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 The utility model is a stereoscopic diagram of a gas phase polyethylene catalyst spray drying device used for laboratory small-scale tests.
[0014] Figure 2 The utility model is a bottom view of a gas phase polyethylene catalyst spray drying device used for laboratory small-scale tests.
[0015] Figure 3 The utility model is a diagram showing the internal structure of a drying box for a laboratory small-scale test gas-phase polyethylene catalyst spray drying device.
[0016] Figure 4 This is another perspective view of the internal structure of a drying box for a laboratory small-scale test of a gas-phase polyethylene catalyst spray drying device according to the utility model.
[0017] Figure 5 This is an exploded diagram of the connection between a drying box and a sealing plate of a laboratory small-scale test gas-phase polyethylene catalyst spray drying device of the utility model.
[0018] 1. Legs; 2. Drying box; 3. Sprayer; 4. Controller; 5. Connecting pipe; 6. Hot air blower; 7. Groove; 8. Electric telescopic rod; 9. Sealing plate; 10. Air vent; 11. Nozzle; 12. Protective frame; 13. Fixed plate; 14. Support frame; 15. Vibration motor; 16. Temperature sensor; 17. Screening plate; 18. Slot; 19. Through hole; 20. Spring; 21. Sliding column; 22. Limit block. DETAILED DESCRIPTION
[0019] The utility model is further described below in conjunction with the accompanying drawings.
[0020] according to Figure 1-5 As shown: the utility model provides a spray drying device for laboratory small-scale gas-phase polyethylene catalyst testing: comprising a support leg 1, the support leg 1 is fixedly connected with a drying box 2 upward, a sprayer 3 is arranged on the drying box 2, and the lower end of the sprayer 3 is connected with a nozzle 11 located in the drying box 2; a fixed plate 13 is fixedly arranged in the drying box 2, a through groove is opened on the upper surface of the fixed plate 13, a card slot 18 connected with the through groove is opened on the lower surface of the fixed plate 13, and a screening plate 17 is placed in the card slot 18; a vibration motor 15 is fixedly arranged at the bottom of the fixed plate 13; a through hole 19 is opened on the upper surface of the bottom plate of the drying box 2, and a groove 7 connected with the through hole 19 is opened on the lower surface of the bottom plate of the drying box 2; a sealing plate 9 is arranged in the groove 7, and a receiving frame 14 located in the drying box 2 is fixedly connected to the sealing plate 9; the sealing plate 9 is connected to the screening plate 17 through a movable connection structure, and an electric telescopic rod 8 fixedly connected with the sealing plate 9 is arranged below the drying box 2; a temperature monitoring device is arranged in the drying box 2, and a temperature regulating device is arranged outside the drying box 2.
[0021] By setting the vibration motor 15 and the sieve plate 17, not only the agglomerated catalyst can be dispersed, but also the catalyst particles that cannot be dispersed can be separated; at the same time, the sealing plate 9 is connected to the sieve plate 17 by a movable connection structure, so that the two batches of separated catalysts can be quickly taken out at the same time.
[0022] The movable connection structure includes a spring 20, a sliding column 21, and a limit block 22. The sliding column 21 slides through the sealing plate 9, and the sliding column 21 is fixedly connected to the screening plate 17; the limit block 22 is fixedly connected to the lower end of the sliding column 21; the spring 20 is located between the screening plate 17 and the sealing plate 9, the spring 20 is sleeved on the sliding column 21, and the spring 20 has a compression amount.
[0023] The arrangement of the spring 20 and the sliding column 21 enables the sieve plate 17 and the sealing plate 9 to be elastically connected, and the spring 20 can exert pressure on the sieve plate 17, so that the sieve plate 17 can fit tightly with the slot 18 in the fixed plate 13. When the electric telescopic rod 8 drives the sealing plate 9 to move downward, the receiving frame 14 and the sieve plate 17 can be taken out at the same time, so as to facilitate the removal of the two batches of catalyst particles after screening.
[0024] The temperature monitoring device includes a temperature sensor 16, and a controller 4 connected to the temperature sensor 16 is provided on the outer wall of the drying box 2. The temperature regulating device includes a hot air blower 6, which is connected to the controller 4 in a circuit, and the hot air blower 6 is connected to the inside of the drying box 2 through a connecting pipe 5. The temperature in the drying box 2 is monitored by the temperature sensor 16, and the hot air blower 6 is adjusted by the controller 4, so as to ensure that the drying box 2 is in a suitable constant temperature state to maintain the spray drying effect.
[0025] The drying box 2 is provided with air holes 10 for ventilation. The fixing plate 13 is fixedly connected with a protection frame 12 , and the through slot is located in the protection frame 12 , so that the catalyst particles are always within the range of the through slot and the sieve plate 17 .
[0026] Principle of the utility model
[0027] like Figure 1-3 As shown, when the utility model is used, the atomized catalyst is sprayed into the drying box 2 through the sprayer 3. Under the action of the drying box 2 and the hot air blower 6, the atomized catalyst particles are quickly dried, and the solid catalyst particles fall into the protective frame 12; the vibration motor 15 is started to vibrate the fixed plate 13, which can disperse the agglomerated catalyst particles on the fixed plate 13. At the same time, the catalyst particles that meet the particle size of the sieve plate 17 can pass through the sieve plate 17 and fall into the receiving frame 14; while the catalyst particles that cannot be dispersed will remain on the sieve plate 17.
[0028] like Figure 4 As shown, the temperature sensor 16 can monitor the temperature in the drying box 2 and transmit the monitored value to the controller 4. The controller 4 adjusts the heating power of the hot air blower 6 according to the temperature in the drying box 2, so that the temperature in the drying box 2 can always be maintained at a constant level to ensure the spray drying effect.
[0029] like Figure 4-5 As shown, after the dispersion and separation of the catalyst particles are completed, the electric telescopic rod 8 is started, and the sealing plate 9 drives the receiving frame 14 to detach from the drying box 2. At the same time, driven by the movable connection structure, the screening plate 17 can also detach from the fixed plate 13 and be taken out of the drying box 2 along with the sealing plate 9, which is quick and convenient.
[0030] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.
Claims
1. A spray drying device for laboratory test of gas phase polyethylene catalyst, comprising a support leg (1), the support leg (1) is fixedly connected to a drying box (2) upward, a sprayer (3) is arranged on the drying box (2), and the lower end of the sprayer (3) is connected to a nozzle (11) located in the drying box (2); characterized in that: A fixing plate (13) is fixedly arranged in the drying box (2), a groove (7) is provided on the upper surface of the fixing plate (13), a slot (18) connected to the groove (7) is provided on the lower surface of the fixing plate (13), and a screening plate (17) is placed in the slot (18); a vibration motor (15) is fixedly arranged at the bottom of the fixing plate (13); a through hole (19) is provided on the upper surface of the bottom plate of the drying box (2), and a groove (7) connected to the through hole (19) is provided on the lower surface of the bottom plate of the drying box (2); a sealing plate (9) is arranged in the groove (7), and a receiving frame (14) located in the drying box (2) is fixedly connected to the sealing plate (9); the sealing plate (9) is connected to the screening plate (17) through a movable connection structure, and an electric telescopic rod (8) fixedly connected to the sealing plate (9) is arranged below the drying box (2); a temperature monitoring device is arranged in the drying box (2), and a temperature regulating device is arranged outside the drying box (2).
2. A spray drying device for laboratory test gas phase polyethylene catalyst according to claim 1, characterized in that: The movable connection structure comprises a spring (20), a sliding column (21), and a limit block (22); the sliding column (21) slides through the sealing plate (9), and the sliding column (21) is fixedly connected to the screening plate (17); the limit block (22) is fixedly connected to the lower end of the sliding column (21); the spring (20) is located between the screening plate (17) and the sealing plate (9), and the spring (20) is sleeved on the sliding column (21).
3. The spray drying device for laboratory test of gas-phase polyethylene catalyst according to claim 1, characterized in that: The temperature monitoring device comprises a temperature sensor (16), and the outer wall of the drying box (2) is provided with a controller (4) which is connected to the temperature sensor (16) by circuit.
4. A spray drying device for laboratory test gas phase polyethylene catalyst according to claim 3, characterized in that: The temperature regulating device comprises a hot air blower (6), the hot air blower (6) is connected to the controller (4) circuit, and the hot air blower (6) is connected to the inside of the drying box (2) through a connecting pipe (5).
5. The spray drying device for laboratory test of gas phase polyethylene catalyst according to claim 1, characterized in that: The drying box (2) is provided with an air vent (10), the fixing plate (13) is fixedly connected with a protection frame (12), and the through groove is located in the protection frame (12).