A high-purity production batch rectification column device
By introducing a cleaning component into the batch distillation column, the combined movement of scrapers and guide channels solves the problem of heat transfer obstruction caused by sediment accumulation, achieving efficient sediment cleaning and improved equipment safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HAIYAN FINE CHEM IND CO LTD
- Filing Date
- 2025-07-16
- Publication Date
- 2026-07-14
AI Technical Summary
In batch distillation columns, the evaporation of light components leads to an increase in the liquid concentration in the bottom of the column, while the crystallization and deposition of non-volatile components on the column wall hinders heat transfer, which can easily cause local overheating and equipment deformation. Existing spray pipes are not effective at cleaning.
Design a batch distillation column for high-purity production, equipped with a cleaning component including upper and lower scrapers, scrapers, guide rods, and motor-driven limit rods. Deposits are removed by rotation and lifting scraping, and the cleaning effect is enhanced by the spiral motion of the guide grooves and scrapers.
It effectively avoids localized overheating caused by sediment accumulation, improves equipment cleaning quality, ensures smooth heat transfer, prevents equipment deformation, and enhances production purity and safety.
Smart Images
Figure CN224484982U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of batch distillation column technology, and in particular relates to a batch distillation column device for high-purity production. Background Technology
[0002] A batch distillation column is a type of chemical equipment that operates in batches. Its main characteristic is that the materials to be separated are added to the distillation vessel all at once for distillation. During operation, the composition of the distillate and operating parameters change over time, constituting a non-steady-state process. Its structure consists only of a rectification section, and it can be operated in two modes: maintaining a constant distillate composition or maintaining a constant reflux ratio. It is suitable for scenarios with variable material compositions and high separation requirements.
[0003] In batch distillation, light components continuously evaporate, and the liquid concentration in the bottom of the column gradually increases, causing non-volatile components to crystallize and precipitate due to supersaturation and deposit on the column wall. When the temperature in the bottom of the column decreases, these organic substances solidify in the cooling chamber and adhere firmly to the column wall. The deposits hinder heat transfer, and the temperature in the bottom of the column needs to be increased to compensate for heat loss, which can easily lead to local overheating, causing decomposition of heat-sensitive materials or overheating deformation of the equipment. Although the batch distillation column is equipped with spray pipes for rinsing, the rinsing force of the spray pipes is low and it is difficult to clean the column wall thoroughly. To solve the above problems, a batch distillation column for high-purity production is proposed. Utility Model Content
[0004] The purpose of this invention is to provide a batch distillation column for high-purity production, thereby solving the problems mentioned in the background art.
[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:
[0006] This utility model relates to a batch distillation column device for high-purity production, comprising a distillation column body, within which a cleaning component is installed.
[0007] The cleaning assembly includes an upper scraper and a lower scraper. A mounting frame is fixedly installed inside the distillation column body. A motor is fixedly installed on the upper surface of the mounting frame. A limit rod is fixedly connected to the output end of the motor. Several locking rods are fixedly connected to the peripheral side of the limit rod. Limit holes are opened at the center positions of the upper scraper, the lower scraper, and the connecting column. Several slots are opened on the peripheral side of the limit holes. The locking rods cooperate with the slots to limit the cleaning assembly, allowing it to rotate while moving up and down.
[0008] A connecting column is fixedly connected between the upper scraper and the lower scraper. A guide groove is provided on the circumferential side of the connecting column. A guide rod is fixedly installed on the circumferential side of the distillation column body. The guide rod, in conjunction with the guide groove, enables the cleaning component to rotate and scrape during the lifting and lowering scraping process.
[0009] Preferably, both the upper and lower scraper plates have several mounting slots inside. A tension spring is fixedly installed in each mounting slot. One end of the tension spring is fixedly connected to a limiting plate. A movable rod is fixedly connected to one surface of the limiting plate. A scraper is fixedly connected to one end of the movable rod, ensuring that the scraper is always in contact with the inner wall of the distillation column body.
[0010] Preferably, the limiting rod passes through the limiting hole and is slidably engaged with the limiting hole, and the locking rod is slidably engaged with the locking groove.
[0011] Preferably, both the lower scraper and the upper scraper have drainage holes on their upper surfaces. A number of cleaning brushes are fixedly connected to the bottom surface of the lower scraper. The cleaning brushes cooperate with the bottom of the distillation column body to scrape. After the lower scraper rotates to the bottom, the cleaning brushes rotate with the lower scraper to clean the bottom of the distillation column body.
[0012] Preferably, one end of the guide rod is installed in the guide groove, and the guide rod and the guide groove are slidably engaged.
[0013] Preferably, the guide groove is spirally arranged.
[0014] Preferably, the movable rod and the limiting plate are slidably engaged with the mounting groove, and the scraper is engaged with the inner wall of the distillation column body.
[0015] This utility model has the following beneficial effects:
[0016] This invention features a function of rotating and scraping the inner wall of a distillation column to prevent the accumulation of sediment and subsequent localized overheating. Specifically, it is achieved by setting up a cleaning component, a guide rod, and a guide groove. A motor drives the cleaning component to rotate via a limit rod, and the guide rod, in conjunction with the guide groove, guides the cleaning component, causing it to move up and down. The scraper scrapes the sediment on the inner wall of the distillation column body, and the component rotates during the lifting and lowering process to improve the scraping quality of the equipment.
[0017] The scraper of this invention has the function of adapting to the deformation of the column body. Specifically, it is equipped with a tension spring and a movable rod. The distillation column may expand thermally at high temperatures. The extension and contraction capacity of the tension spring can offset the scraper gap caused by the deformation of the column body, maintain the continuous contact between the scraper and the column wall, and thus further improve the scraping quality of the equipment.
[0018] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description
[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of 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.
[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0021] Figure 2 This is a cross-sectional structural diagram of the present invention;
[0022] Figure 3 This is a schematic diagram of the cleaning mechanism of this utility model;
[0023] Figure 4 This is a schematic diagram of the lifting mechanism of this utility model;
[0024] Figure 5 This is a schematic diagram of the upper scraper of this utility model;
[0025] Figure 6 This is a schematic diagram of the lower scraper of this utility model;
[0026] Figure 7 for Figure 5 Schematic diagram of the cross-sectional structure.
[0027] The components represented by each number in the attached diagram are listed below: 1. Distillation column body; 2. Guide rod; 3. Upper scraper; 4. Lower scraper; 5. Connecting column; 6. Guide groove; 7. Mounting bracket; 8. Motor; 9. Limiting rod; 10. Locking rod; 11. Leakage hole; 12. Cleaning brush; 13. Movable rod; 14. Scraper; 15. Limiting hole; 16. Mounting groove; 17. Tension spring; 18. Limiting plate; 19. Locking slot. Detailed Implementation
[0028] 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.
[0029] In the description of this utility model, it should be understood that the terms "upper", "middle", "outer", "inner", etc., which indicate orientation or positional relationship, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0030] Please see Figures 1-7 As shown, this utility model is a batch distillation column equipment for high-purity production, including a distillation column body 1. The distillation column body 1 is equipped with a cleaning component. During the batch distillation process, the material in the distillation column body 1 is boiled by heating. The vapor at the top of the column is condensed and separated into product and reflux liquid. After each batch operation is completed, the residual liquid needs to be discharged and the material is fed back for the next round of separation.
[0031] The cleaning assembly includes an upper scraper 3 and a lower scraper 4. A mounting bracket 7 is fixedly installed inside the distillation column body 1. A motor 8 is fixedly installed on the upper surface of the mounting bracket 7. It should be noted that a wiring hole is opened on one side of the distillation column body 1 for the power supply wiring of the motor 8 (not shown in the figure). A sealing ring is provided at the wiring location to ensure the airtightness of the inside of the distillation column body 1. The output end of the motor 8 is fixedly connected to a limit rod 9. Several locking rods 10 are fixedly connected to the periphery of the limit rod 9. Limit holes 15 are opened at the center of the upper scraper 3, the lower scraper 4, and the connecting column 5. The limit rod 9 passes through the limit hole 15 and slides with the limit hole 15. Several slots 19 are opened on the periphery of the limit hole 15. The locking rods 10 slide with the slots 19. The locking rods 10 and the slots 19 limit the cleaning assembly, so that the limit rod 9 can drive the cleaning assembly to rotate. During the rotation, the cleaning assembly can also move up and down.
[0032] A connecting column 5 is fixedly connected between the upper scraper 3 and the lower scraper 4. Both the upper scraper 3 and the lower scraper 4 are fixedly connected to the connecting column 5 by bolts. Several mounting slots 16 are opened inside the upper scraper 3 and the lower scraper 4. A tension spring 17 is fixedly installed in the mounting slot 16. One end of the tension spring 17 is fixedly connected to a limiting plate 18. The function of the limiting plate 18 is to limit the movable rod 13 and prevent the movable rod 13 from falling out of the mounting slot 16. A movable rod 13 is fixedly connected to one surface of the limiting plate 18. Both the movable rod 13 and the limiting plate 18 are slidably engaged with the mounting slot 16. A scraper 14 is fixedly connected to one end of the movable rod 13. The scraper 14 scrapes against the inner wall of the distillation column body 1 to keep the scraper 14 in contact with the inner wall of the distillation column body 1.
[0033] When the cleaning component moves up and down to scrape and clean multiple locations on the inner wall of the distillation column body 1, the scraper 14 abuts against the inner wall of the distillation column body 1. The tension spring 17 can automatically adjust the pressure of the scraper 14 according to the roughness of the column wall or the degree of scaling. During the rotation of the connecting column 5, the scraper 14 extends outward under the action of centrifugal force. When the column wall is coked and hardened, the compression of the tension spring 17 increases to maintain a constant contact force and avoid insufficient pressure leading to incomplete cleaning or excessive pressure damaging the column wall.
[0034] The connecting column 5 has a guide groove 6 on its circumferential side. The guide groove 6 is spirally arranged. A guide rod 2 is fixedly installed on the circumferential side of the distillation column body 1. One end of the guide rod 2 is installed in the guide groove 6, and the guide rod 2 and the guide groove 6 are slidably engaged. The guide rod 2 and the guide groove 6 enable the cleaning component to lift and scrape during the rotation. During the up and down movement of the cleaning component, the guide rod 2 guides and limits the connecting column 5 because the guide groove 6 is spirally arranged. This allows the cleaning component to lift and scrape along the spiral direction of the guide groove 6 during rotation. During the rotation, it can lift and scrape simultaneously. The centrifugal force generated by the rotation and the feeding force of the scraper 14 can effectively peel off high-viscosity deposits, break the local thermal boundary layer between the deposits and the column wall, accelerate heat transfer, and cause the hard scale to become brittle and fall off under thermal stress, thus expanding the cleaning range of the equipment.
[0035] Both the lower scraper 4 and the upper scraper 3 have drainage holes 11 on their upper surfaces. The distillation column body 1 has a built-in flushing assembly. The flushing water can flow downward through the drainage holes 11 to flush the column wall.
[0036] Several cleaning brushes 12 are fixedly connected to the bottom surface of the lower scraper 4. The cleaning brushes 12 are fixedly connected to the lower scraper 4 by bolts. The cleaning brushes 12 cooperate with the bottom of the distillation column body 1 for scraping. After the lower scraper 4 rotates to the bottom, the cleaning brushes 12 follow the rotation of the lower scraper 4 to clean the bottom of the distillation column body 1, so that multiple positions of the distillation column body 1 can be cleaned, avoiding cleaning dead corners.
[0037] Working principle:
[0038] During the cleaning of the distillation column body 1, the motor 8 drives the limiting rod 9 to rotate. Under the limiting action of the clamping rod 10 and the clamping groove 19, the limiting rod 9 drives the upper scraper 3, the lower scraper 4, and the connecting column 5 to rotate. The upper scraper 3 and the lower scraper 4 simultaneously clean and scrape the inside of the distillation column body 1, removing the deposits adhering to the inner wall of the distillation column body 1. During the rotation of the cleaning components, the guide rod 2, in conjunction with the guide groove 6, guides the connecting column 5, causing the upper scraper 3 and the lower scraper 4 to rise and fall simultaneously along the spiral direction of the guide groove 6 during rotation, thus allowing the scraper blades to move freely. 14 can lift, rotate and scrape the column wall, improving cleaning efficiency and quality. When the lower scraper 4 reaches the bottom of the distillation column body 1, the lower scraper 4 drives the cleaning brush 12 to rotate and scrape the bottom of the distillation column body 1. The tension spring 17 can automatically adjust the pressure of the scraper 14 according to the roughness of the column wall or the degree of scaling, in conjunction with the extension and retraction of the movable rod 13. When the column wall is coked and hardened, the compression of the tension spring 17 increases to maintain a constant contact force, avoiding insufficient pressure leading to incomplete cleaning or excessive pressure damaging the column wall. The distillation column body 1 has a built-in flushing mechanism, which works with the scraper 14 to clean the inside of the column.
[0039] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0040] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.
Claims
1. A batch distillation column device for high-purity production, comprising a distillation column body (1), wherein a cleaning assembly is provided inside the distillation column body (1), characterized in that: The cleaning assembly includes an upper scraper (3) and a lower scraper (4). A mounting frame (7) is fixedly installed inside the distillation column body (1). A motor (8) is fixedly installed on the upper surface of the mounting frame (7). A limit rod (9) is fixedly connected to the output end of the motor (8). Several locking rods (10) are fixedly connected to the peripheral side of the limit rod (9). Limit holes (15) are opened at the center positions of the upper scraper (3), the lower scraper (4) and the connecting column (5). Several slots (19) are opened on the peripheral side of the limit holes (15). The locking rods (10) cooperate with the slots (19) to limit the cleaning assembly, so that it can rotate and move up and down at the same time. A connecting column (5) is fixedly connected between the upper scraper (3) and the lower scraper (4). A guide groove (6) is provided on the circumferential side of the connecting column (5). A guide rod (2) is fixedly installed on the circumferential side of the distillation column body (1). The guide rod (2) cooperates with the guide groove (6) to make the cleaning component rotate and scrape during the lifting and scraping process.
2. The batch distillation column equipment for high-purity production according to claim 1, characterized in that, The upper scraper (3) and the lower scraper (4) are provided with several mounting slots (16). A tension spring (17) is fixedly installed in the mounting slot (16). One end of the tension spring (17) is fixedly connected to a limiting plate (18). A movable rod (13) is fixedly connected to one surface of the limiting plate (18). A scraper (14) is fixedly connected to one end of the movable rod (13), keeping the scraper (14) in contact with the inner wall of the distillation column body (1).
3. The batch distillation column equipment for high-purity production according to claim 1, characterized in that, The limiting rod (9) passes through the limiting hole (15) and the limiting rod (9) slides in conjunction with the limiting hole (15), and the locking rod (10) slides in conjunction with the locking groove (19).
4. The batch distillation column equipment for high-purity production according to claim 1, characterized in that, Both the lower scraper (4) and the upper scraper (3) have drainage holes (11) on their upper surfaces. Several cleaning brushes (12) are fixedly connected to the bottom surface of the lower scraper (4). The cleaning brushes (12) cooperate with the bottom scraping of the distillation column body (1). After the lower scraper (4) rotates to the bottom, the cleaning brushes (12) follow the rotation of the lower scraper (4) to clean the bottom of the distillation column body (1).
5. The batch distillation column equipment for high-purity production according to claim 1, characterized in that, One end of the guide rod (2) is installed in the guide groove (6), and the guide rod (2) and the guide groove (6) slide together.
6. The batch distillation column equipment for high-purity production according to claim 1, characterized in that, The guide groove (6) is spirally arranged.
7. The batch distillation column equipment for high-purity production according to claim 2, characterized in that, The movable rod (13) and the limiting plate (18) are both slidably engaged with the mounting groove (16), and the scraper (14) is engaged with the inner wall of the distillation column body (1).