A coupling rectification device for separating aromatic ketone compounds
By using an adjustable tray spacing and a servo motor-driven rotary scraper system, the problems of non-adjustable tray spacing and coking blockage in traditional distillation units have been solved, achieving efficient separation of aromatic ketone compounds and improved unit stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SINO HIGH CHINA
- Filing Date
- 2025-07-04
- Publication Date
- 2026-06-02
AI Technical Summary
Traditional distillation units have a fixed structure and the tray spacing is not adjustable, resulting in low separation efficiency. Aromatic ketone materials are prone to adhering and coking on the top of the trays, affecting the stability and continuous operation of the unit.
Design a coupled distillation apparatus with adjustable tray spacing, combining a servo motor-driven rotary scraper system to scrape off residue from the top of the trays, and achieve stable tray adjustment through a bidirectional threaded rod and sliding block structure to avoid coking and blockage.
It improves the applicability and stability of the device, prevents the reduction of separation efficiency, extends the service life of the equipment, and enhances the separation effect on aromatic ketone compounds.
Smart Images
Figure CN224307840U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of aromatic ketone compound separation technology, specifically a coupled distillation apparatus for separating aromatic ketone compounds. Background Technology
[0002] Aromatic ketones are a class of organic compounds widely used in fine chemicals, pharmaceuticals, and fragrance synthesis. They are characterized by large molecular weight, high boiling point, and easy polymerization and coking. Coupled distillation is often used for purification and separation.
[0003] Traditional distillation units mostly have fixed structures and non-adjustable tray spacing, making it impossible to flexibly optimize separation efficiency according to different materials or experimental needs, thus reducing the applicability of the unit. At the same time, aromatic ketone materials are prone to adhering and depositing on the top of the tray or the wall of the column during high-temperature distillation, resulting in a decrease in mass transfer efficiency or even blockage, affecting the stability of continuous operation.
[0004] Therefore, it is necessary to design a coupled distillation apparatus for the separation of aromatic ketone compounds to solve the above problems. Utility Model Content
[0005] The purpose of this invention is to provide a coupled distillation apparatus for separating aromatic ketone compounds, which solves the technical problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a coupled distillation apparatus for separating aromatic ketone compounds, comprising a tank body, a tray fixedly connected inside the tank body, and another tray slidably disposed at the top and bottom of the tray, with a weir fixedly connected to the top of each tray, and a downcomer fixedly inserted into the outer surface of each tray. The outer surface of the tank body has two symmetrical sliding openings, with a positioning post inserted into the interior of the two sliding openings on one side, and a bidirectional threaded rod rotatably connected to the interior of the two sliding openings on the other side, with the positioning post having a sliding sleeve on its outer surface. The device has two symmetrical sliding blocks, and two other symmetrical sliding blocks are threaded onto the outer surface of the bidirectional threaded rod. The upper two sliding blocks and the lower two sliding blocks are respectively fixed to the outside of a tray. A first servo motor and a second servo motor are fixed to the top of the tank. The top of the bidirectional threaded rod is fixed to the top of the second servo motor. A rotating shaft is fixed to the bottom of the first servo motor. Two scrapers are elastically inserted into the rotating shaft. Another scraper is fixedly inserted into the top of a central tray. The bottoms of the two scrapers are respectively in contact with the tops of the two trays.
[0007] Preferably, the outer surface of the rotating shaft has two sliding openings, and the top of each of the two sliding openings has a cylindrical groove. A connecting column is slidably disposed inside each of the two cylindrical grooves. The outer surface of each of the two connecting columns is in contact with the inner wall of the two cylindrical grooves. A spring is fixedly connected to the top of each of the two connecting columns. The top of each of the two springs is fixedly connected to the top of the two cylindrical grooves. The bottom of each of the two connecting columns is fixedly connected to the top of the two scrapers.
[0008] Preferably, there are two scrapers, and both sides of the two scrapers are provided with arc-shaped surfaces, and the arc-shaped surfaces at both ends of the two scrapers are respectively attached to one side of the outer surface of the two weirs on the two tower plates.
[0009] Preferably, the outer surface of the tank is provided with a feed inlet and an air inlet, and the bottom of the tank is provided with a discharge outlet. A condenser is provided on the top of the tank, and both sides of the condenser are connected to pipes, and both pipes are connected to the interior of the tank. A reboiler is connected to one side of the tank.
[0010] Preferably, there are three downcomers, and the three downcomers are alternately arranged on the outer surface of the three trays.
[0011] Preferably, the sliding block is square in shape, and there are four sliding blocks, with the outer surfaces of the four sliding blocks respectively fitting into the interior of the four sliding openings.
[0012] The technical solution provided by this utility model has the following advantages compared with the prior art:
[0013] This invention, by setting up multiple trays and their adjustable spacing structure, enables the device to meet industrial separation requirements while also having the function of adjusting the spacing under experimental conditions. Combined with the rotating scraper system driven by the first servo motor at the top, the three scrapers can remove the residue on the top of the trays in real time, avoiding the reduction in separation efficiency caused by coking and clogging of aromatic ketones. In addition, the bidirectional threaded rod with sliding block structure can be adjusted up and down while maintaining the stability of the trays. With the help of the spring-supported scrapers, it can automatically fit the adjusted tray surface, thereby improving the adaptability, stability and service life of the distillation process. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the structure of this utility model;
[0015] Figure 2 This is an exploded view of the tank structure of this utility model;
[0016] Figure 3 This is an exploded view of the rotating column structure of this utility model;
[0017] In the diagram: 1. Tank body; 2. Feed inlet; 3. First servo motor; 4. Air inlet; 5. Second servo motor; 6. Condenser; 7. Reboiler; 8. Discharge outlet; 9. Tray; 10. Downcomer; 11. Weir; 12. Sliding block; 13. Positioning column; 14. Rotating shaft; 15. Bidirectional threaded rod; 16. Sliding port; 17. Scraper; 18. Spring; 19. Connecting column. Detailed Implementation
[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.
[0019] Obviously, many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.
[0020] Please see Figure 1-3This utility model provides a coupled distillation apparatus for separating aromatic ketone compounds, including a tank body 1. A tray 9 is fixedly connected inside the tank body 1, and another tray 9 is slidably disposed at the top and bottom of the tray 9. A weir 11 is fixedly connected to the top of each tray 9, and a downcomer 10 is fixedly inserted into the outer surface of each tray 9. Two symmetrical sliding openings 16 are formed on the outer surface of the tank body 1. A positioning post 13 is inserted into the interior of the two sliding openings 16 on one side, and a bidirectional threaded rod 15 is rotatably connected to the interior of the two sliding openings 16 on the other side. The outer surface of the positioning post 13... Two symmetrical sliding blocks 12 are slidably connected, and two other symmetrical sliding blocks 12 are threaded onto the outer surface of the bidirectional threaded rod 15. The upper two sliding blocks 12 and the lower two sliding blocks 12 are respectively fixed to the outside of a tower plate 9. A first servo motor 3 and a second servo motor 5 are fixed to the top of the tank body 1. The top end of the bidirectional threaded rod 15 is fixed to the top of the second servo motor 5. A rotating shaft 14 is fixed to the bottom of the first servo motor 3. Two scrapers 17 are elastically inserted into the interior of the rotating shaft 14. Another scraper 17 is fixedly inserted into the top of a central tower plate 9 on the rotating shaft 14. 7. The bottoms of the two scrapers 17 are respectively attached to the tops of the two trays 9. When the tank 1 is performing routine separation of aromatic ketone compounds, there is no need to adjust the spacing between the three trays 9. By turning on the first servo motor 3, normal coupled distillation can be carried out. At the same time, the three scrapers 17 are used to rotate and scrape the tops of the three trays 9, thereby removing deposits, coking materials or viscous residues on the tops or walls of the trays 9. The material is discharged with the liquid flow after being scraped off, avoiding accumulation and blockage. In addition, when it is necessary to conduct experiments on the tank 1 to verify the effect of different spacings on separation efficiency and gas-liquid load, the three trays 9 can be adjusted. The spacing between the three trays 9 is adjustable. By activating the second servo motor 5, the upper and lower trays 9 can slide towards or away from each other using the rotation of the bidirectional threaded rod 15. This allows for adjustment of the spacing between the three trays 9 while simultaneously providing elastic support to the upper and lower scrapers 17 via two springs 18. This ensures that the scrapers 17 are in contact with the tops of the two trays 9 at the two adjusted positions. Thus, even after adjusting the spacing between the three trays 9, the device can still scrape off material residue, improving its applicability and avoiding the problem of reduced coupling distillation efficiency of the three trays 9 due to material residue during the separation of aromatic ketone compounds.
[0021] To ensure that the two scrapers 17 can slide stably on the outer surface of the rotating shaft 14 and remain in contact with the tops of the two trays 9 when their positions are adjusted, the outer surface of the rotating shaft 14 has two sliding openings. Each of the two sliding openings has a cylindrical groove at its top, and a connecting post 19 is slidably disposed inside each of the cylindrical grooves. The outer surfaces of the two connecting posts 19 are in contact with the inner walls of the two cylindrical grooves. A spring 18 is fixedly connected to the top of each of the two connecting posts 19, and the tops of the two springs 18 are respectively fixed to the tops of the two cylindrical grooves. The bottoms of the two connecting posts 19 are respectively fixed to the tops of the two scrapers 17.
[0022] To facilitate the rotation of the two scrapers 17, there are two scrapers 17, and both sides of the two scrapers 17 are provided with arc-shaped surfaces, and the arc-shaped surfaces at both ends of the two scrapers 17 are respectively attached to one side of the outer surface of the two weirs 11 on the two tower plates 9.
[0023] Furthermore, to facilitate feeding and discharging, and to provide a heat source for the tower to vaporize the liquid, drive the distillation process, and condense the rising gas into liquid, partially refluxing it back into the tower, the outer surface of the tank 1 is provided with a feed inlet 2 and an air inlet 4, and the bottom of the tank 1 is provided with a discharge outlet 8. A condenser 6 is provided at the top of the tank 1, and both sides of the condenser 6 are connected to pipes, both of which are connected to the interior of the tank 1. A reboiler 7 is connected to one side of the tank 1.
[0024] Furthermore, in order to control the liquid flow from the upper layer to the lower layer, maintain the liquid level, and avoid flooding or short circuit, the number of downcomers 10 is three, and the three downcomers 10 are alternately arranged on the outer surface of the three trays 9.
[0025] To facilitate the stability of the two trays 9 during position adjustment, the sliding block 12 is square in shape, and there are four sliding blocks 12. The outer surfaces of the four sliding blocks 12 are respectively in contact with the interior of the four sliding ports 16.
[0026] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.
[0027] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without contradiction. In order to avoid unnecessary repetition, this utility model will not describe the various possible combinations separately.
[0028] Furthermore, various different embodiments of this utility model can be combined in any way, as long as they do not violate the spirit of this utility model, they should also be regarded as the content disclosed by this utility model.
Claims
1. A coupled distillation apparatus for separating aromatic ketone compounds, comprising a tank (1), characterized in that: A tray (9) is fixedly connected inside the tank (1), and another tray (9) is slidably provided at the top and bottom of the tray (9). A weir (11) is fixedly connected to the top of the tray (9), and a downcomer (10) is fixedly inserted into the outer surface of the tray (9). Two symmetrical sliding ports (16) are opened on the outer surface of the tank (1). A positioning post (13) is inserted into the two sliding ports (16) on one side, and a bidirectional threaded rod (15) is rotatably connected to the two sliding ports (16) on the other side. Two symmetrical sliding blocks (12) are slidably sleeved on the outer surface of the positioning post (13), and the outer surface of the bidirectional threaded rod (15) is threaded. Two other symmetrical sliding blocks (12) are fitted together, and the two upper sliding blocks (12) and the two lower sliding blocks (12) are respectively fixed to the outside of a tower plate (9). The top of the tank body (1) is fixed to a first servo motor (3) and a second servo motor (5). The top of the bidirectional threaded rod (15) is fixed to the top of the second servo motor (5). The bottom of the first servo motor (3) is fixed to a rotating shaft (14). Two scrapers (17) are elastically inserted into the inside of the rotating shaft (14). Another scraper (17) is fixedly inserted into the top of a central tower plate (9). The bottoms of the two scrapers (17) are respectively attached to the tops of the two tower plates (9).
2. The coupled distillation apparatus for separating aromatic ketone compounds according to claim 1, characterized in that: The outer surface of the rotating shaft (14) has two sliding openings, and the top of each of the two sliding openings is provided with a cylindrical groove. A connecting column (19) is slidably arranged inside each of the two cylindrical grooves. The outer surface of each of the two connecting columns (19) is in contact with the inner wall of the two cylindrical grooves. A spring (18) is fixedly connected to the top of each of the two connecting columns (19). The top of each of the two springs (18) is fixedly connected to the top of the two cylindrical grooves. The bottom of each of the two connecting columns (19) is fixedly connected to the top of the two scrapers (17).
3. The coupled distillation apparatus for separating aromatic ketone compounds according to claim 1, characterized in that: The number of scrapers (17) is two, and both sides of the two scrapers (17) are provided with arc-shaped surfaces, and the arc-shaped surfaces at both ends of the two scrapers (17) are respectively attached to one side of the outer surface of the two weirs (11) on the two tower plates (9).
4. The coupled distillation apparatus for separating aromatic ketone compounds according to claim 1, characterized in that: The outer surface of the tank (1) is provided with a feed inlet (2) and an air inlet (4), and the bottom of the tank (1) is provided with a discharge outlet (8). A condenser (6) is provided on the top of the tank (1), and pipes are connected to both sides of the condenser (6), and both pipes are connected to the interior of the tank (1). A reboiler (7) is connected to one side of the tank (1).
5. The coupled distillation apparatus for separating aromatic ketone compounds according to claim 1, characterized in that: The number of downcomers (10) is three, and the three downcomers (10) are alternately arranged on the outer surface of the three trays (9).
6. The coupled distillation apparatus for separating aromatic ketone compounds according to claim 1, characterized in that: The sliding block (12) is square in shape, and there are four sliding blocks (12). The outer surfaces of the four sliding blocks (12) are respectively attached to the interior of the four sliding openings (16).