Anti-clogging toluene extractive rectification column
By installing spherical screens and filter screens on the feed pipe of the toluene extraction distillation column, and using structures such as clamping plates and U-shaped plates to restrict the flow, the problem of clogging caused by impurity accumulation was solved, thereby improving the stability and reliability of the equipment and facilitating maintenance and cleaning.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TANGSHAN RUIDA IND CO LTD
- Filing Date
- 2025-07-25
- Publication Date
- 2026-06-26
AI Technical Summary
The existing toluene extractive distillation column lacks a raw material filtration mechanism, which leads to the accumulation of solid impurities, precipitates, or scale inside the column, causing blockage and affecting gas-liquid flow and mass transfer efficiency.
A spherical screen and filter screen are installed on the feed pipe. Solid impurities are filtered by rotating the filter screen. The position of the second circular pipe is restricted by the cooperation of the lower and upper clamping plates. The spherical screen is installed to prevent impurities from entering the tower. The position of the clamping plate is restricted by the U-shaped plate and the round rod to ensure stable rotation of the filter screen and prevent clogging.
It effectively prevents clogging inside the tower, ensures continuous dynamic filtration of the filter screen, improves equipment stability and reliability, facilitates disassembly and cleaning, and avoids filter screen clogging caused by the accumulation of impurities.
Smart Images
Figure CN224404408U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of toluene extraction technology, and in particular to an anti-clogging toluene extraction distillation column. Background Technology
[0002] A toluene extractive distillation column is a specialized device used to separate and purify toluene, commonly found in chemical production processes. It combines extraction and distillation to improve the separation efficiency and purity of toluene. Simply put, this device is a complex piece of equipment used in the chemical industry to efficiently purify toluene. By combining extraction and distillation, it ensures that the purity of toluene meets production requirements. However, most existing toluene extractive distillation columns still have problems that need to be solved.
[0003] Most existing toluene extractive distillation columns lack a mechanism for filtering the feedstock. Solid impurities, precipitates, or scale in the feedstock will enter the column along with the feedstock. These impurities may accumulate in the packing or on the trays, causing blockage, affecting gas-liquid flow, and reducing mass transfer efficiency. Therefore, it is necessary to design an anti-clogging toluene extractive distillation column to solve the above problems. Utility Model Content
[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing an anti-clogging toluene extraction distillation column.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A clog-resistant toluene extractive distillation column includes an extractive distillation column with a feed pipe at its top. A spherical screen is mounted on the feed pipe, and a filter screen, a first circular tube, and a second circular tube are mounted on the spherical screen. A support platform is fixedly connected to the outer wall of the feed pipe, and a lower clamping plate is fixedly connected to the top of the support platform. An upper clamping plate is mounted on the top of the lower clamping plate. The lower and upper clamping plates are fitted onto the second circular tube. Both the lower and upper clamping plates have square grooves, and a U-shaped plate is installed in the two square grooves at the same end. Circular grooves are also provided on the lower, upper, and U-shaped plates, and a circular rod is installed within each circular groove. A magnet is installed at the bottom of the circular rod, and the magnet is fixedly connected to the lower clamping plate. A limiting groove is formed on the outer wall of the second circular tube, and a limiting block is installed within the limiting groove. A drive disc is fixedly connected to the limiting block. The spherical screen is installed by using a rotating filter screen to filter solid impurities in the raw material and by the lower and upper clamping plates working together to restrict the position of the second circular tube. This technical approach uses a rotating filter screen to trap solid impurities, preventing them from entering the extractive distillation column and causing blockage. The lower and upper clamping plates restrict the position of the second circular tube, allowing the spherical screen to be installed. The second circular tube rotates within these plates, causing the filter screen to rotate and perform filtration, thus preventing blockage. The U-shaped plate and circular rod work together to restrict the position of the second circular tube between the lower and upper clamping plates, ensuring its stability. This effectively solves the problem mentioned in the background section where most existing toluene extractive distillation columns lack a mechanism for filtering the raw material. Solid impurities, precipitates, or scale in the raw material enter the column with it, potentially accumulating in the packing or on the trays, causing blockage, affecting gas-liquid flow, and reducing mass transfer efficiency. This approach effectively prevents blockage within the column, ensures continuous dynamic filtration, avoids impurity accumulation leading to filter screen blockage, improves equipment stability and reliability, and offers simple operation, easy disassembly, and convenient maintenance and cleaning.
[0007] As a further embodiment of this utility model, two slots are provided on the feed tube.
[0008] As a further embodiment of this utility model, the slot is adapted to the first round tube and the second round tube, and the first round tube and the second round tube are respectively disposed in the two slots.
[0009] As a further embodiment of this utility model, positioning rods are fixedly connected to the top of both ends of the lower plate, and both positioning rods pass through the upper plate. Holes adapted to the positioning rods are provided on the upper plate.
[0010] As a further embodiment of this utility model, the support platform is fixedly connected to a fixing frame on the side away from the feed pipe, and a motor is fixedly connected to one side of the fixing frame. The output end of the motor is connected to the drive disk through a coupling.
[0011] As a further embodiment of this utility model, the drive disc is rotatably connected to the fixing frame.
[0012] The beneficial effects of this utility model are as follows:
[0013] This invention employs a rotating filter screen to filter solid impurities from the raw material, and a combination of lower and upper clamping plates to restrict the position of the second circular tube for installing the spherical screen. The rotating filter screen traps solid impurities within it, preventing them from entering the extractive distillation column and causing blockage. The lower and upper clamping plates restrict the position of the second circular tube, allowing the spherical screen to be installed. The second circular tube rotates within the lower and upper clamping plates, causing the filter screen to rotate and perform the filtering process, preventing blockage. The U-shaped plate and the circular rod work together to control the position between the lower and upper clamping plates. The design restricts the position of the second circular tube, ensuring its stability. This effectively solves the problem mentioned in the background section that most existing toluene extraction distillation columns lack a mechanism for filtering the raw materials. Solid impurities, precipitates, or scale in the raw materials enter the column along with the raw materials. These impurities may accumulate in the packing or on the trays, causing blockage, affecting gas-liquid flow, and reducing mass transfer efficiency. This design effectively prevents blockage within the column, ensures continuous dynamic filtration of the filter screen, avoids impurity accumulation leading to filter screen blockage, improves the stability and reliability of the equipment, and offers the technical benefits of simple operation, easy disassembly and assembly, and convenient maintenance and cleaning. Attached Figure Description
[0014] Figure 1 This is a three-dimensional structural diagram of an anti-clogging toluene extraction distillation column proposed in this utility model;
[0015] Figure 2 This is a schematic cross-sectional view of the feed pipe of an anti-clogging toluene extraction distillation column proposed in this utility model.
[0016] Figure 3 This is a partial structural diagram of an anti-clogging toluene extraction distillation column proposed in this utility model;
[0017] Figure 4 This is a partial cross-sectional structural diagram of an anti-clogging toluene extraction distillation column proposed in this utility model;
[0018] Figure 5 This is a schematic cross-sectional view of the drive plate of an anti-clogging toluene extraction distillation column proposed in this utility model.
[0019] Figure 6 This is a partial cross-sectional view of the anti-clogging toluene extraction distillation column proposed in this utility model.
[0020] In the diagram: 1. Extractive distillation column; 2. Feed pipe; 201. Slot; 3. Spherical sieve; 301. Filter screen; 302. First circular tube; 303. Second circular tube; 4. Support platform; 5. Lower clamping plate; 6. Upper clamping plate; 7. Square slot; 8. U-shaped plate; 9. Circular slot; 10. Circular rod; 11. Drive disc; 12. Limiting slot; 13. Limiting block; 14. Positioning rod; 15. Fixing frame; 16. Motor; 17. Magnet. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0022] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0023] Reference Figure 1 - Figure 6A clog-resistant toluene extractive distillation column includes an extractive distillation column 1. A feed pipe 2 is installed at the top of the extractive distillation column 1. A spherical screen 3 is installed on the feed pipe 2. A filter screen 301, a first circular tube 302, and a second circular tube 303 are installed on the spherical screen 3. A support platform 4 is fixedly connected to the outer wall of the feed pipe 2. A lower clamping plate 5 is fixedly connected to the top of the support platform 4. An upper clamping plate 6 is installed on the top of the lower clamping plate 5. The lower clamping plate 5 and the upper clamping plate 6 are fitted onto the second circular tube 303. Square grooves 7 are provided on both the lower clamping plate 5 and the upper clamping plate 6. Two square grooves 7 at one end are equipped with the same U-shaped plate 8. Circular grooves 9 are formed on the lower clamping plate 5, upper clamping plate 6, and U-shaped plate 8. A circular rod 10 is installed in each circular groove 9, and a magnet 17 is installed at the bottom of the circular rod 10. The magnet 17 is fixedly connected to the lower clamping plate 5. A limiting groove 12 is formed on the outer wall of the second circular tube 303, and a limiting block 13 is installed in the limiting groove 12. A driving disk 11 is fixedly connected to the limiting block 13. Due to the use of a rotating filter screen to filter solid impurities in the raw material and the cooperation of the lower and upper clamping plates to control the second circular tube 303... This technique involves restricting the position of the tube to install the spherical screen. The rotating filter screen traps solid impurities, preventing them from entering the extractive distillation column and causing blockage. The lower and upper clamping plates restrict the position of the second circular tube, allowing the spherical screen to be installed. The second circular tube rotates within these plates, causing the filter screen to rotate and perform filtration, preventing blockage. The U-shaped plate and circular rod work together to restrict the position between the lower and upper clamping plates, ensuring the stability of the second circular tube. This effectively solves the problem mentioned in the background art: most existing toluene extractive distillation columns lack a mechanism for filtering the raw material. Solid impurities, precipitates, or scale in the raw material enter the column with the raw material, potentially accumulating in the packing or on the trays, causing blockage, affecting gas-liquid flow, and reducing mass transfer efficiency. This technique effectively prevents blockage within the column, ensures continuous dynamic filtration, avoids impurity accumulation leading to filter blockage, improves equipment stability and reliability, and offers simple operation, easy disassembly, and convenient maintenance and cleaning.
[0024] In this embodiment, two slots 201 are provided on the feed pipe 2.
[0025] In this embodiment, the slot 201 is adapted to the first round tube 302 and the second round tube 303. The first round tube 302 and the second round tube 303 are respectively set in the two slots 201. When the first round tube 302 and the second round tube 303 are placed in the slot 201, they can provide a certain limiting effect when the spherical screen 3 is rotated, so as to ensure the stability of the spherical screen 3 when it rotates.
[0026] In this embodiment, positioning rods 14 are fixedly connected to the top of both ends of the lower plate 5. Both positioning rods 14 pass through the upper plate 6. The upper plate 6 has holes that are compatible with the positioning rods 14. When installing the upper plate 6, the upper plate 6 is placed on the positioning rods 14 to position the upper plate 6 and ensure that the position between the upper plate 6 and the lower plate 5 is accurate.
[0027] In this embodiment, a fixed frame 15 is fixedly connected to the side of the support platform 4 away from the feed pipe 2, and a motor 16 is fixedly connected to one side of the fixed frame 15. The output end of the motor 16 is connected to the drive disk 11 through a coupling.
[0028] In this embodiment, the drive disk 11 is rotatably connected to the fixing frame 15.
[0029] Working principle: During use, the raw material is injected into the spherical screen 3 through the first circular tube 302. The filter screen 301 filters impurities in the raw material, preventing impurities from entering the extractive distillation column 1 and causing blockage. When in use, an external power supply is used. The motor 16 is started via the external controller. The output of the motor 16 drives the coupling to rotate, which in turn drives the drive disc 11 to rotate. The drive disc 11 then drives the limit block 13 to rotate, which in turn drives the second circular tube 303 to rotate. The second circular tube 303 then drives the spherical screen 3 to rotate, thus rotating the filter screen 301. This disperses the impurities accumulated inside the filter screen 301, preventing continuous accumulation and blockage, ensuring continuous filtration. During assembly, the first circular tube 302 and the second circular tube 303 are placed into the slot 201. Two circular tubes 303 are placed on the lower clamping plate 5, and the limiting groove 12 is engaged with the limiting block 13, so that the limiting block 13 is placed in the limiting groove 12. Then, the upper clamping plate 6 is put on the positioning rod 14, so that the upper clamping plate 6 is lowered and will contact the lower clamping plate 5. At this time, the U-shaped plate 8 is inserted into the square groove 7 on the lower clamping plate 5 and the upper clamping plate 6, so that the position between the lower clamping plate 5 and the upper clamping plate 6 is restricted, and the circular groove 9 is made coaxial. Then, the circular rod 10 is inserted into the circular groove 9 to restrict the position of the U-shaped plate 8. The circular rod 10 is a metal rod, and the circular rod 10 is attracted by the magnet 17 to ensure the stability of the position of the circular rod 10, so that the lower clamping plate 5, the upper clamping plate 6, and the U-shaped plate 8 remain stable. When disassembling, the circular rod 10 is pulled out and the U-shaped plate 8 is removed, so that the upper clamping plate 6 and the lower clamping plate 5 can be separated, and the spherical screen 3 can be removed to treat the impurities in the filter screen 301.
[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A clog-resistant toluene extractive distillation column, comprising an extractive distillation column (1), characterized in that, The top of the extractive distillation column (1) is provided with a feed pipe (2), and a spherical screen (3) is provided on the feed pipe (2). The spherical screen (3) is provided with a filter screen (301), a first circular tube (302) and a second circular tube (303). A support platform (4) is fixedly connected to the outer wall of the feed pipe (2). A lower clamping plate (5) is fixedly connected to the top of the support platform (4). An upper clamping plate (6) is provided on the top of the lower clamping plate (5). The lower clamping plate (5) and the upper clamping plate (6) are sleeved on the second circular tube (303). Square openings are provided on both the lower clamping plate (5) and the upper clamping plate (6). The two square grooves (7) at the same end are provided with the same U-shaped plate (8). The lower plate (5), the upper plate (6) and the U-shaped plate (8) are all provided with circular grooves (9). A circular rod (10) is provided in the circular groove (9). A magnet (17) is provided at the bottom of the circular rod (10). The magnet (17) is fixedly connected to the lower plate (5). A limit groove (12) is provided on the outer wall of the second circular tube (303). A limit block (13) is provided in the limit groove (12). A drive disk (11) is fixedly connected to the limit block (13).
2. The anti-clogging toluene extraction distillation column according to claim 1, characterized in that, The feed pipe (2) has two slots (201).
3. The anti-clogging toluene extraction distillation column according to claim 2, characterized in that, The slot (201) is adapted to the first round tube (302) and the second round tube (303), and the first round tube (302) and the second round tube (303) are respectively disposed in the two slots (201).
4. The anti-clogging toluene extraction distillation column according to claim 1, characterized in that, The top of both ends of the lower plate (5) are fixedly connected with positioning rods (14), and both positioning rods (14) pass through the upper plate (6). The upper plate (6) has holes that are compatible with the positioning rods (14).
5. The anti-clogging toluene extraction distillation column according to claim 1, characterized in that, The support platform (4) has a fixed frame (15) fixedly connected to the side away from the feed pipe (2), and a motor (16) is fixedly connected to one side of the fixed frame (15). The output end of the motor (16) is connected to the drive disk (11) through a coupling.
6. The anti-clogging toluene extraction distillation column according to claim 5, characterized in that, The drive disk (11) is rotatably connected to the fixing frame (15).