A device for removing impurities from crude tetrabromoethane by vacuum distillation

Abstract

This utility model discloses a vacuum distillation device for removing impurities from crude tetrabromoethane. It includes four support legs fixedly installed at the bottom of a dynamic filter tank. A sealing cover is rotatably connected to the top of the dynamic filter tank via a rotating shaft. Two symmetrical L-shaped plates are fixedly connected to the upper part of the inner cavity of the dynamic filter tank. A neutral plate is fixedly connected to the central axis of the top of each L-shaped plate, and long plates are provided on both sides of the neutral plate. This utility model utilizes the cooperation of a ring, neutral plates, and locking blocks to install a filter screen inside the dynamic filter tank. Tetrabromoethane enters the inner cavity of the dynamic filter tank through a connecting pipe. Since tetrabromoethane flows from top to bottom, it first undergoes preliminary filtration through the filter screen. Then, the dynamic filter inside the dynamic filter tank performs fine filtration of the tetrabromoethane before it finally enters the vacuum distillation tower.

Description

Technical Field

[0001] This utility model belongs to the field of tetrabromoethane production technology, and in particular relates to a vacuum distillation device for removing impurities from crude tetrabromoethane. Background Technology

[0002] Tetrabromoethane is an organic bromide that is a colorless or pale yellow liquid at room temperature with an irritating odor. It has a boiling point of about 243°C at normal pressure and is readily soluble in organic solvents such as ethanol and ether. It is mainly used in organic synthesis and flame retardant preparation, and can also be used as a solvent and pesticide intermediate. However, it is toxic, and precautions should be taken during use and storage to avoid skin contact or inhalation of its vapor.

[0003] The filter screen in the vacuum distillation impurity removal device for crude tetrabromoethane is fixedly installed inside the tank. Replacing it requires stopping the entire distillation system and disassembling the tank components, which is cumbersome and time-consuming, leading to production interruptions. Therefore, it is necessary to design a vacuum distillation impurity removal device for crude tetrabromoethane that can be directly removed and replaced without stopping the distillation system or disassembling the tank components. This simplifies the operation, shortens the replacement time, and ensures the stability of impurity removal and the continuity of the process. Utility Model Content

[0004] The purpose of this invention is to provide a vacuum distillation device for removing impurities from crude tetrabromoethane. This device has the advantages of not requiring the distillation system to be stopped or tank components to be disassembled during disassembly, allowing for direct removal and replacement, simplifying operation, shortening replacement time, and ensuring the stability of impurity removal and the continuity of the process, thereby solving the aforementioned technical problems.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A vacuum distillation device for removing impurities from crude tetrabromoethane includes four support legs fixedly installed at the bottom of a dynamic filter tank. A sealing cover is rotatably connected to the top of the dynamic filter tank via a rotating shaft. Two symmetrical L-shaped plates are fixedly connected to the upper part of the inner cavity of the dynamic filter tank. A central plate is fixedly connected to the central axis of the top of each of the two L-shaped plates. Long plates are provided on the left and right sides of each central plate. The bottom of the two long plates is fixedly connected to the top of the L-shaped plates. A ring is provided in the inner cavity of the dynamic filter tank. A filter screen is installed at the central axis of the inner cavity of the ring. Two symmetrical upper top plates are fixedly connected to the bottom of the ring. A locking block is fixedly connected to the bottom of each of the two upper top plates. The left and right sides of the locking block are slidably connected to the long plate.

[0006] Preferably, rectangular plates are provided on both the front and rear sides of the neutral plate, the bottom of the two rectangular plates are fixedly connected to the top of the L-shaped plate, and the rectangular plates are slidably connected to the front and rear sides of the locking block.

[0007] Preferably, limit blocks are fixedly connected to both the front and rear sides of the two long plates.

[0008] Preferably, long strips are fixedly connected to both the left and right sides of the locking block, and the inner wall of the limiting block is slidably connected to the locking block.

[0009] Preferably, a rectangular groove is provided at the central axis of the locking block, and the central plate is adapted to the rectangular groove.

[0010] The beneficial effects of this utility model are: 1. This utility model utilizes the combined use of a circular ring, a central plate, and a locking block to install a filter screen inside the dynamic filter tank. Tetrabromoethane enters the inner cavity of the dynamic filter tank through a connecting pipe. Since tetrabromoethane flows from top to bottom, it first undergoes preliminary filtration through the filter screen. Then, the dynamic filter inside the dynamic filter tank performs fine filtration on the tetrabromoethane. Finally, it enters the vacuum distillation tower. This achieves the goal of eliminating the need to stop the distillation system or disassemble tank components during disassembly, allowing for direct removal and replacement. This simplifies operation, shortens replacement time, and ensures the stability of impurity removal and the continuity of the process. 2. This utility model uses the combination of a limiting block and a long strip. When the long strip slides on the inner wall of the limiting block, the limiting block guides the long strip, ensuring that the long strip slides horizontally and vertically, thus avoiding the phenomenon of the ring shifting when installed in the inner cavity of the dynamic filter tank. Attached Figure Description

[0011] The advantages of the present invention, as described above and / or in the following detailed description in conjunction with the accompanying drawings, will become clearer and more readily understood. These drawings are merely illustrative and do not limit the scope of the present invention. Figure 1 This is a front view schematic diagram of one embodiment of the present utility model; Figure 2 This is a three-dimensional anatomical diagram of a dynamic filter tank according to an embodiment of the present invention; Figure 3 This is a three-dimensional schematic diagram of a ring and a filter screen according to an embodiment of the present invention; Figure 4 This is a three-dimensional schematic diagram of an embodiment of the L-shaped plate and the locking block of the present invention.

[0012] The attached diagram lists the components represented by each number as follows: 1. Dynamic filter tank, 2. Support legs, 3. Sealing cover, 4. L-shaped plate, 5. Central plate, 6. Rectangular plate, 7. Long plate, 8. Limiting block, 9. Circular ring, 10. Filter screen, 11. Top plate, 12. Locking block, 13. Long strip, 14. Rectangular groove. Detailed Implementation

[0013] In the following description, embodiments of the vacuum distillation apparatus for removing impurities from crude tetrabromoethane according to the present invention will be described with reference to the accompanying drawings.

[0014] Figure 1-4 This invention illustrates a vacuum distillation device for removing impurities from crude tetrabromoethane according to an embodiment of the present invention. It includes four support legs 2 fixedly installed at the bottom of a dynamic filter tank 1. A sealing cover 3 is rotatably connected to the top of the dynamic filter tank 1 via a rotating shaft. Two symmetrical L-shaped plates 4 are fixedly connected to the upper part of the inner cavity of the dynamic filter tank 1. A central plate 5 is fixedly connected to the central axis at the top of each L-shaped plate 4. Long plates 7 are provided on both the left and right sides of the central plate 5. The bottoms of the two long plates 7 are fixedly connected to the tops of the L-shaped plates 4. Limiting blocks 8 are fixedly connected to the front and rear sides of each long plate 7. Long strips 13 are fixedly connected to both the left and right sides of a locking block 12. The inner wall of the limiting block 8 is slidably connected to the locking block 12. Through the cooperation of the limiting block 8 and the long strips 13, when the long strips 13 slide against the inner wall of the limiting block 8, the limiting block 8... Position block 8 guides the long strip 13, ensuring that the long strip 13 slides horizontally and vertically, preventing the ring 9 from shifting when installed in the inner cavity of the dynamic filter tank 1. The inner cavity of the dynamic filter tank 1 is provided with a ring 9, and a filter screen 10 is installed at the central axis of the inner cavity of the ring 9. Two symmetrical upper top plates 11 are fixedly connected to the bottom of the ring 9, and locking blocks 12 are fixedly connected to the bottom of each of the two upper top plates 11. Rectangular plates 6 are provided on the front and rear sides of the central plate 5. The bottom of the two rectangular plates 6 is fixedly connected to the top of the L-shaped plate 4. The rectangular plates 6 are slidably connected to the front and rear sides of the locking blocks 12. The left and right sides of the locking blocks 12 are slidably connected to the long plate 7. A rectangular groove 14 is provided at the central axis of the locking blocks 12, and the central plate 5 is adapted to the rectangular groove 14.

[0015] Working principle: When using this utility model, rotate to open the top sealing cover 3 to expose the inner cavity of the tank for installing the filter screen 10. Assemble the filter screen 10 with the ring 9. Hold the ring 9 and align it with the L-shaped plate 4 structure inside the tank, so that the two upper top plates 11 and the locking block 12 at the bottom of the ring 9 are precisely aligned. During installation, the rectangular groove 14 of the locking block 12 needs to be fitted into the central plate 5. The left and right sides of the locking block 12 slide along the long plate 7, and the front and back sides are attached to the rectangular plate 6. At the same time, the long strip 13 on the locking block 12 slides synchronously along the inner wall of the limiting block 8 to avoid displacement. The filter screen 10 is locked in place until the bottom of the locking block 12 is completely attached to the top of the L-shaped plate 4. Finally, the sealing cover 3 is closed. The crude bromoethane enters the tank through the feed pipe and flows from top to bottom. It first passes through the filter screen 10 to intercept large particles for preliminary filtration, and then flows through the dynamic filtration component in the tank for fine impurity removal. Dynamic filtration is a mature technology in existing equipment and will not be described in detail. The processed material enters the subsequent vacuum distillation tower. When the filter screen 10 needs to be replaced, simply open the sealing cover 3 and pull up the ring 9 to remove it, ensuring the continuous impurity removal process.

[0016] In summary, this vacuum distillation device for removing impurities from crude tetrabromoethane utilizes the combined use of the circular ring 9, the central plate 5, and the locking block 12 to install the filter screen 10 inside the dynamic filter tank 1. Tetrabromoethane enters the dynamic filter tank 1 through the connecting pipe. Since tetrabromoethane flows from top to bottom, it undergoes preliminary filtration through the filter screen 10. Then, the dynamic filter inside the dynamic filter tank 1 performs fine filtration before finally entering the vacuum distillation tower. This design allows for easy disassembly without stopping the distillation system or disassembling tank components; the components can be directly removed and replaced, simplifying operation, reducing replacement time, and ensuring stable impurity removal and continuous process flow.

Claims

1. A vacuum distillation apparatus for removing impurities from crude tetrabromoethane, characterized in that, The system includes four support legs (2) fixedly installed at the bottom of the dynamic filter tank (1). A sealing cover (3) is rotatably connected to the top of the dynamic filter tank (1) via a rotating shaft. Two symmetrical L-shaped plates (4) are fixedly connected to the top of the inner cavity of the dynamic filter tank (1). A central plate (5) is fixedly connected to the central axis of the top of the two L-shaped plates (4). Long plates (7) are provided on the left and right sides of the central plate (5). The bottom of the two long plates (7) is fixedly connected to the top of the L-shaped plates (4). A ring (9) is provided in the inner cavity of the dynamic filter tank (1). A filter screen (10) is installed at the central axis of the inner cavity of the ring (9). Two symmetrical upper top plates (11) are fixedly connected to the bottom of the ring (9). A locking block (12) is fixedly connected to the bottom of the two upper top plates (11). The left and right sides of the locking block (12) are slidably connected to the long plate (7).

2. The apparatus for vacuum distillation and impurity removal of crude tetrabromoethane according to claim 1, characterized in that, The neutral plate (5) is provided with rectangular plates (6) on both the front and rear sides. The bottom of the two rectangular plates (6) is fixedly connected to the top of the L-shaped plate (4). The rectangular plates (6) are slidably connected to the front and rear sides of the locking block (12).

3. The vacuum distillation apparatus for removing impurities from crude tetrabromoethane according to claim 2, characterized in that, Limiting blocks (8) are fixedly connected to the front and rear sides of the two long plates (7).

4. The apparatus for vacuum distillation and impurity removal of crude tetrabromoethane according to claim 3, characterized in that, The locking block (12) has long strips (13) fixedly connected to both sides, and the inner wall of the limiting block (8) is slidably connected to the locking block (12).

5. The vacuum distillation apparatus for removing impurities from crude tetrabromoethane according to claim 4, characterized in that, A rectangular groove (14) is provided at the central axis of the locking block (12), and the central plate (5) is adapted to the rectangular groove (14).

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