Separation and purification device for tetrabromoethane production

Abstract

The invention discloses a separation and purification device for tetrabromoethane production, and relates to the technical field of tetrabromoethane production equipment.The separation and purification device comprises a distillation mechanism, a separation mechanism, a condensation mechanism and a collection mechanism, the separation mechanism comprises a separation box, a movable sliding seat, a movable sliding frame and an activated carbon plate, and an air inlet groove communicated with an exhaust port is formed in the bottom of the separation box; a first sliding groove is formed in the inner side of the separation box, the movable sliding base is connected with the first sliding groove in a sliding fit mode, the bottom of the movable sliding frame abuts against the top of the air inlet groove, the side portion of the movable sliding frame is fixedly connected with the movable sliding base, and the activated carbon plate is arranged in the movable sliding frame. And the steam uniformly passes through each area of the activated carbon plate. Therefore, the activated carbon can give full play to the adsorption performance, pigments, peculiar smell and various impurity gases in the steam are continuously and efficiently removed, and the separation and purification degree of the tetrabromoethane steam is greatly improved, so that the high stability of the product quality is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of tetrabromoethane production equipment, and in particular to a separation and purification device for tetrabromoethane production. Background Art

[0002] Tetrabromoethane is a chemical substance with the chemical formula C2H2Br4, also known as 1,1,2,2-tetrabromoethane or acetylene tetrabromide. It is a colorless to pale yellow liquid, commonly used as an intermediate in organic synthesis (such as synthetic quaternary ammonium salts), medicine and dyes. It is also used in the preparation of refrigerants, fumigants, fire extinguishing agents, chemical fiber catalysts, initiators for polyester oxidation processes, as well as in mineral processing and as a solvent.

[0003] In the prior art scheme, a Chinese patent with authorization announcement number CN 114315509 B discloses a safe and low-waste tetrabromoethane production process, comprising the following steps: step 1, adding liquid bromine into a transparent reaction kettle equipped with a high-pressure mercury lamp, turning on the high-pressure mercury lamp in a nitrogen atmosphere at a constant temperature of 65-75°C, and then introducing acetylene gas to react for 4-5 hours to obtain a reaction liquid; step 2, adding ethanol and ethylene glycol glycidyl ether to the reaction liquid under stirring to obtain a mixed liquid, and filtering the mixed liquid with a modified separation membrane to obtain a permeate; step 3, recovering ethanol from the permeate through low-temperature distillation, purifying it through reduced-pressure distillation, and finally decolorizing it with activated carbon to obtain tetrabromoethane.

[0004] The disadvantages of the above-mentioned prior art solutions are that: during the vacuum distillation process, a fixed activated carbon layer is often used to adsorb impurities. However, as the filtration process proceeds, steam often passes through a local area of ​​the activated carbon layer, causing the area to be quickly saturated and the adsorption capacity to drop sharply, while the remaining areas fail to fully function, and the overall adsorption efficiency is greatly reduced, making it difficult to achieve an ideal purification effect for tetrabromoethane and causing unstable product quality. Summary of the invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a separation and purification device for tetrabromoethane production, which solves the problems of uneven adsorption of activated carbon, low efficiency and poor practicality of the equipment in the traditional tetrabromoethane purification process.

[0006] To achieve the above-mentioned purpose, according to an embodiment of the first aspect of the present invention, a separation and purification device for tetrabromoethane production is proposed, comprising a distillation mechanism, a separation mechanism, a condensation mechanism and a collection mechanism, wherein the distillation mechanism comprises a distillation tank, a top of which is provided with a feed port and an exhaust port, a heating component is arranged in the distillation tank, the separation mechanism comprises a separation box, a movable slide, a movable slide frame and an activated carbon plate, the bottom of the separation box is provided with an air inlet groove connected to the exhaust port, the inner side of the separation box is provided with a first slide groove in a horizontal state, the movable slide is slidably connected to the first slide groove, the bottom of the movable slide frame is in contact with the top of the air inlet groove, the side of the movable slide frame is fixedly connected to the movable slide seat, the activated carbon plate is fixedly arranged in the movable slide frame, the condensation mechanism comprises a condensation pipe, one end of which is connected to the separation box, and the collection mechanism comprises a collection tank, the other end of which is connected to the collection tank.

[0007] As a further solution of the present invention: the separation mechanism also includes a sliding baffle and a telescopic baffle, a second horizontal slide groove is opened on the inner side of the separation box, the two sliding baffles are relatively slidably arranged in the second slide groove, the two telescopic baffles are arranged between the two sliding baffles, and the two ends of the telescopic baffle are respectively fixedly connected to the corresponding sliding baffles, the area enclosed by the two sliding baffles and the two telescopic baffles constitutes the air inlet groove, and the bottom of the movable sliding frame is abutted against the top of the sliding baffle and the telescopic baffle.

[0008] As a further solution of the present invention: a plurality of slots arranged in a matrix are provided on the side of the sliding baffle, and both ends of the telescopic baffle are matched and connected with the corresponding slots.

[0009] As a further solution of the present invention: the telescopic baffle includes a first baffle and a second baffle, one end of the first baffle is fixedly provided with an insert block that matches the corresponding slot, the other end of the first baffle is provided with a slot that slides with one end of the second baffle, and the other end of the second baffle is fixedly provided with an insert block that matches the corresponding slot.

[0010] As a further solution of the present invention: the separation box includes a box body and a box cover, the box cover is arranged on the top of the box body, one end of the condenser tube is connected to the box cover, and the box cover is an inverted funnel-shaped structure.

[0011] As a further solution of the present invention: the condensing mechanism also includes a cooling shell, which is sleeved on the outside of the condenser tube, and a cooling cavity is opened on the inside of the cooling shell, and a water inlet and a water outlet connected to the cooling cavity are respectively opened at the bottom and top of the cooling shell.

[0012] As a further solution of the present invention: the condensing mechanism also includes a heat-conducting ring, and a plurality of heat-conducting rings are arranged in a matrix on the outside of the condensing tube.

[0013] As a further solution of the present invention: an observation window is provided on the side of the aggregate tank, and a scale bar is provided on the side of the observation window.

[0014] As a further solution of the present invention: the heating component includes an electric heating coil and a temperature sensor, a heating cavity is opened on the side of the distillation tank, the electric heating coil and the temperature sensor are both arranged in the heating cavity, and the electric heating coil is electrically connected to the temperature sensor.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The separation mechanism of the present invention ensures that the steam passes through each area of ​​the activated carbon plate evenly through the movable slide and the slide frame. This enables the activated carbon to give full play to its adsorption performance, continuously and efficiently remove the pigment, odor and various impurity gases in the steam, greatly improving the degree of separation and purification of tetrabromoethane vapor, thereby ensuring the high stability of product quality. Since each area of ​​the activated carbon plate is uniformly adsorbed, its overall adsorption capacity can be fully utilized, avoiding the situation of replacing the activated carbon in advance due to local saturation, thereby reducing the replacement frequency of the activated carbon and significantly reducing the procurement cost of the activated carbon.

[0017] 2. The adaptability of the separation mechanism is increased by the cooperation of the sliding baffle and the telescopic baffle. For mixed materials containing tetrabromoethane of different batches, different components or different impurity contents, the flow rate and velocity of steam entering the separation box can be optimized by adjusting the size and shape of the air inlet slot, thereby achieving better separation and purification effects. For example, for materials with high impurity content, the air inlet slot can be appropriately enlarged to increase the processing speed; for situations that require more refined separation, the air inlet slot can be reduced to allow the steam to stay longer at the activated carbon plate and enhance the adsorption effect.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 The present invention is a schematic diagram of the three-dimensional structure of a separation and purification device for producing tetrabromoethane.

[0021] Figure 2 It is a three-dimensional structural schematic diagram of the distillation mechanism in the present invention.

[0022] Figure 3 It is a three-dimensional structural schematic diagram of the separation box in the present invention.

[0023] Figure 4 It is a three-dimensional structural schematic diagram of the separation mechanism in the present invention.

[0024] Figure 5 It is a schematic diagram of the three-dimensional structure of the air inlet groove in the present invention.

[0025] Figure 6 yes Figure 5 A magnified view of the local structure at center A.

[0026] Figure 7 It is a three-dimensional structural schematic diagram of the condensation mechanism in the present invention.

[0027] Figure 8 It is a schematic diagram of the three-dimensional structure of the heat conducting ring in the present invention.

[0028] Fig. 9 It is a three-dimensional structural cross-sectional view of the collecting mechanism in the present invention.

[0029] Reference numerals include:

[0030] 1. Distillation mechanism; 2. Separation mechanism; 3. Condensation mechanism; 4. Collection mechanism; 5. Distillation tank; 6. Feed inlet; 7. Exhaust port; 8. Heating component; 9. Separation box; 10. Movable slide; 11. Movable slide frame; 12. Activated carbon plate; 13. First slide slot; 14. Condenser; 15. Collection tank; 16. Sliding baffle; 17. Telescopic baffle; 18. Second slide slot; 19. Inlet slot; 20. Slot; 21. First baffle; 22. Second baffle; 23. Insert; 24. Box body; 25. Box cover; 26. Cooling shell; 27. Cooling cavity; 28. Water inlet; 29. ​​Water outlet; 30. Heat transfer ring; 31. Observation window; 32. Scale bar; 33. Electric heating coil; 34. Temperature sensor. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] like Figures 1 to 9 As shown, a separation and purification device for producing tetrabromoethane includes a distillation mechanism 1, a separation mechanism 2, a condensation mechanism 3 and a collection mechanism 4. The distillation mechanism 1 includes a distillation tank 5. A feed inlet 6 and an exhaust port 7 are provided on the top of the distillation tank 5. A heating component 8 is provided inside the distillation tank 5.

[0033] First, a mixture containing tetrabromoethane and impurities is fed into the distillation tank 5 from the feed port 6 at the top of the distillation tank 5. The heating component 8 in the distillation tank 5 starts to work to heat the material in the tank. Since tetrabromoethane and impurities have different boiling points, during the heating process, tetrabromoethane and substances with lower boiling points will gradually vaporize to form steam, while impurities with higher boiling points will remain at the bottom of the distillation tank 5. The steam is discharged through the exhaust port 7 at the top of the distillation tank 5 and enters the separation mechanism 2.

[0034] The separation mechanism 2 includes a separation box 9, a movable slide 10, a movable slide frame 11 and an activated carbon plate 12. The bottom of the separation box 9 is provided with an air inlet groove 19 connected to the exhaust port 7. The inner side of the separation box 9 is provided with a first slide groove 13 in a horizontal state. The movable slide 10 is slidably connected with the first slide groove 13. The bottom of the movable slide frame 11 is in contact with the top of the air inlet groove 19. The side of the movable slide frame 11 is fixedly connected with the movable slide 10. The activated carbon plate 12 is fixedly arranged in the movable slide frame 11. Specifically, the movable slide 10, the movable slide frame 11 and the activated carbon plate 12 can slide in the first slide groove 13 by arranging a screw rod in the first slide groove 13 and providing a rotating hole in the movable slide 10 that is threaded with the screw rod. Furthermore, a motor can be provided to drive the screw rod to rotate, so as to realize the automatic sliding of the movable slide 10, the movable slide frame 11 and the activated carbon plate 12 in the first slide groove 13. The movable slide seat 10 , the movable slide frame 11 and the activated carbon plate 12 can also be automatically slid in the first slide groove 13 by installing an electric telescopic rod in the first slide groove 13 .

[0035] After the steam enters the air inlet groove 19 at the bottom of the separation box 9 from the exhaust port 7, it will pass upward through the activated carbon plate 12 in the movable slide frame 11. Activated carbon has a rich pore structure and can adsorb pigments, odors and some impurity gases in the steam, thereby achieving the preliminary purification of tetrabromoethane vapor. As the filtration process proceeds, the movable slide 10 slides in the first slide groove 13, thereby guiding the steam in the air inlet groove 19 to evenly pass through different positions of the activated carbon plate 12, effectively avoiding the local excessive adsorption of steam on the activated carbon plate 12, ensuring that each area of ​​the activated carbon plate 12 can fully exert the adsorption effect, thereby significantly improving the overall adsorption capacity of the activated carbon layer, and greatly improving the separation and purification effect of tetrabromoethane vapor.

[0036] At the same time, this uniform adsorption method can make full use of the adsorption capacity of activated carbon and reduce the problem of decreased overall adsorption efficiency due to local saturation, thereby effectively reducing the replacement frequency of the activated carbon layer, reducing production costs and equipment maintenance workload, greatly improving the practicability and ease of use of the equipment, and providing a strong guarantee for long-term stable operation in industrial production.

[0037] The condensing mechanism 3 includes a condensing tube 14, one end of which is connected to the separation box 9. The steam after preliminary purification by the activated carbon plate 12 enters the condensing tube 14. The steam will recondense into liquid tetrabromoethane when it encounters cooling in the condensing tube 14, realizing the transformation from gaseous state to liquid state. The collecting mechanism 4 includes a collecting tank 15, the other end of which is connected to the collecting tank 15. The liquid tetrabromoethane flows out from the other end of the condensing tube 14 and enters the collecting tank 15 for collection and storage, thereby obtaining a purified tetrabromoethane product, which can be used for subsequent processing or use.

[0038] In the traditional tetrabromoethane vacuum distillation purification, the fixed activated carbon layer cannot effectively remove impurities due to uneven steam flow and local rapid saturation, resulting in large fluctuations in product purity. The separation mechanism 2 of the present invention ensures that steam evenly passes through each area of ​​the activated carbon plate 12 through the movable slide 10 and the slide frame. This allows the activated carbon to fully exert its adsorption performance, continuously and efficiently remove pigments, odors and various impurity gases in the steam, greatly improving the separation and purification degree of tetrabromoethane steam, thereby ensuring the high stability of product quality.

[0039] Since each area of ​​the activated carbon plate 12 is uniformly adsorbed, its overall adsorption capacity can be fully utilized, avoiding the situation where the activated carbon is replaced prematurely due to local saturation, thereby reducing the replacement frequency of the activated carbon and significantly reducing the purchase cost of the activated carbon.

[0040] refer to Figure 5 As shown, in some specific embodiments, the separation mechanism 2 further includes a sliding baffle 16 and a telescopic baffle 17, a second slide groove 18 in a horizontal state is provided on the inner side of the separation box 9, the two sliding baffles 16 are relatively slidably arranged in the second slide groove 18, the two telescopic baffles 17 are arranged between the two sliding baffles 16, and the two ends of the telescopic baffle 17 are respectively fixedly connected to the corresponding sliding baffles 16, the area enclosed by the two sliding baffles 16 and the two telescopic baffles 17 constitutes the air inlet groove 19, and the bottom of the movable slide frame 11 is in contact with the top of the sliding baffle 16 and the telescopic baffle 17. Specifically, a screw rod can be arranged in the second slide groove 18, the screw rod is provided with symmetrical and opposite threads at both ends, and rotating holes matching the corresponding threads are respectively provided on the two sliding baffles 16, so as to realize the sliding of the sliding baffle 16 in the second slide groove 18. Furthermore, a motor can be provided to drive the screw rod to rotate, so as to realize the adjustment of the spacing between the two sliding baffles 16. The distance between the two sliding baffles 16 can also be adjusted by installing an electric telescopic rod in the second slide groove 18 .

[0041] By adjusting the relative positions of the two sliding baffles 16, the length of the air intake slot 19 can be flexibly changed, thereby affecting the air intake amount and air intake uniformity. For example, when the air intake amount needs to be increased, the distance between the two sliding baffles 16 can be appropriately increased; conversely, if the air intake amount needs to be reduced or the air intake is more concentrated, the distance between the two sliding baffles 16 can be reduced.

[0042] The adaptability of the separation mechanism 2 is increased by the cooperation of the sliding baffle 16 and the telescopic baffle 17. For mixed materials containing tetrabromoethane of different batches, different components or different impurity contents, the flow rate and velocity of steam entering the separation box 9 can be optimized by adjusting the size and shape of the air inlet slot 19, thereby achieving a better separation and purification effect. For example, for materials with a high impurity content, the air inlet slot 19 can be appropriately enlarged to increase the processing speed; for situations where more precise separation is required, the air inlet slot 19 can be reduced to allow the steam to stay longer at the activated carbon plate 12 to enhance the adsorption effect.

[0043] refer to Figure 6 As shown, in some specific embodiments, a plurality of slots 20 arranged in a matrix are provided on the side of the sliding baffle 16, and the telescopic baffle 17 includes a first baffle 21 and a second baffle 22, one end of the first baffle 21 is fixedly provided with an insert block 23 that matches the corresponding slot 20, the other end of the first baffle 21 is provided with a slot that slidably matches with one end of the second baffle 22, and the other end of the second baffle 22 is fixedly provided with an insert block 23 that matches the corresponding slot 20.

[0044] The length of the telescopic baffle 17 can be changed by sliding the second baffle 22 in the slot of the first baffle 21. When the width of the air inlet slot 19 needs to be adjusted, the relative positions of the two telescopic baffles 17 can be adjusted according to the positions of different slots 20, thereby changing the width of the air inlet slot 19, so that the separation mechanism 2 can use activated carbon plates 12 of different models and sizes.

[0045] Through the matrix slots 20 on the side of the sliding baffle 16 and the adjustable structure of the telescopic baffle 17, the separation mechanism 2 can flexibly adjust the size of the air inlet slot 19 so that it can adapt to activated carbon plates 12 of different models and sizes. The device can select activated carbon plates 12 of appropriate sizes according to different production needs and purification effect requirements, providing more possibilities for optimizing the purification process of tetrabromoethane. For production tasks of different scales or products with different purity requirements, activated carbon plates 12 of different specifications can be flexibly replaced without large-scale transformation of the entire separation mechanism 2, thereby improving the versatility and scalability of the equipment.

[0046] refer to Figure 3As shown, in some specific embodiments, the separation box 9 includes a box body 24 and a box cover 25, the box cover 25 is arranged on the top of the box body 24, one end of the condenser 14 is connected to the box cover 25, and the box cover 25 is in an inverted funnel-shaped structure. The inverted funnel-shaped structure is narrow at the top and wide at the bottom, which helps to gather and guide the steam. The steam entering from the air inlet groove 19 flows upward into the box cover 25 after being adsorbed by the activated carbon plate 12 in the box body 24. The inverted funnel-shaped box cover 25 can make the steam converge more concentratedly to one end of the condenser 14, thereby improving the efficiency of the steam entering the condenser 14.

[0047] refer to Figure 7 As shown, in some specific embodiments, the condensing mechanism 3 further includes a cooling shell 26, the cooling shell 26 is sleeved on the outside of the condenser tube 14, and a cooling cavity 27 is provided inside the cooling shell 26. The cooling cavity 27 provides space for the flow of cooling medium and heat exchange, and realizes the cooling of the steam in the condenser tube 14 through the heat transfer principle. The bottom and top of the cooling shell 26 are respectively provided with a water inlet 28 and a water outlet 29 connected to the cooling cavity 27. The cooling medium, such as cooling water, can enter the cooling cavity 27 from the water inlet 28, absorb the heat of the condenser tube 14 in the cooling cavity 27, and then flow out from the water outlet 29. Such an inlet and outlet water setting ensures the continuous circulation of the cooling medium, so that the cooling process can be carried out continuously.

[0048] The cooling shell 26 surrounds the condenser 14, increasing the contact area between the cooling medium and the condenser 14 and improving the heat exchange efficiency. When the cooling medium flows into the cooling cavity 27 from the water inlet 28, it will fully contact the outer surface of the condenser 14, more effectively absorbing the heat of the steam, so that the steam is quickly cooled and converted into liquid tetrabromoethane.

[0049] refer to Figure 8 As shown, in some specific embodiments, the condensing mechanism 3 also includes a heat-conducting ring 30, and a plurality of heat-conducting rings 30 are arranged in a matrix on the outside of the condensing tube 14. The heat-conducting rings 30 increase the contact area with the condensing tube 14 and the cooling medium, thereby promoting heat transfer.

[0050] When the steam flows in the condenser tube 14, the condenser tube 14 transfers the heat of the steam to the outside, and the heat-conducting ring 30, as an intermediate medium, can quickly transfer the heat to the cooling medium such as cooling water. Because of the presence of the heat-conducting ring 30, the contact area with the cooling medium is increased, the speed and efficiency of heat exchange are improved, so that the heat in the steam can be absorbed more quickly, thereby accelerating the condensation speed.

[0051] The matrix-like arrangement of the heat-conducting rings 30 can evenly disperse heat, avoiding the local overheating or overcooling that may occur in the traditional condenser 14, making the cooling effect of the entire condenser 14 more uniform, ensuring uniform cooling of the steam in the condenser 14, and helping to improve the purification quality of tetrabromoethane.

[0052] refer to Fig. 9 As shown, in some specific embodiments, an observation window 31 is provided on the side of the aggregate tank 15, and a scale bar 32 is provided on the side of the observation window 31. Through the observation window 31, the operator can observe the liquid level and material status in the tank without opening the aggregate tank 15, so as to facilitate the collection of tetrabromoethane.

[0053] The scale bar 32 on the side of the observation window 31 is used to quantitatively measure the liquid level height of the material in the tank. The existence of the scale bar 32 allows the operator to accurately know the volume of tetrabromoethane in the aggregate tank 15, which is convenient for material management and production process control. By reading the scale on the scale bar 32, the operator can accurately determine whether the tetrabromoethane in the aggregate tank 15 has reached the required amount according to the production schedule and plan, so as to take corresponding operations in time, such as transporting tetrabromoethane to subsequent processes or stopping collection.

[0054] refer to Figure 2 As shown, in some specific embodiments, the heating assembly 8 includes an electric heating coil 33 and a temperature sensor 34. A heating cavity is provided on the side of the distillation tank 5. The electric heating coil 33 and the temperature sensor 34 are both arranged in the heating cavity, and the electric heating coil 33 is electrically connected to the temperature sensor 34. The electric heating coil 33 is used to heat the distillation tank 5, and the temperature sensor 34 is used to monitor the temperature of the distillation tank 5.

[0055] The temperature in the distillation tank 5 can be precisely controlled by the coordinated operation of the electric heating coil 33 and the temperature sensor 34. In the production process of tetrabromoethane, precise temperature control is crucial because different temperatures affect the vaporization efficiency of the material and possible side reactions. By means of the heating assembly 8, the temperature can be controlled within the required range, ensuring that tetrabromoethane and impurities can be effectively separated according to their boiling point differences, while avoiding the decomposition of tetrabromoethane or other adverse side reactions caused by excessively high temperatures, thereby improving product quality.

[0056] In order to facilitate the understanding of the embodiments of the present invention by those skilled in the art, the working principle of the embodiments of the present invention is now described in combination with specific application scenarios:

[0057] According to production requirements, a suitable activated carbon plate 12 is selected and installed in the movable sliding frame 11 of the separation mechanism 2. The positions of the sliding baffle 16 and the telescopic baffle 17 are adjusted to optimize the size and shape of the air inlet slot 19 to adapt to different batches, different components or different impurity contents of mixed materials containing tetrabromoethane.

[0058] The mixture containing tetrabromoethane and impurities is added from the feed port 6 at the top of the distillation tank 5. The heating assembly 8 is started, and the electric heating coil 33 starts to work to heat the material in the distillation tank 5. At the same time, the temperature sensor 34 monitors the temperature in the distillation tank 5 in real time to ensure that the temperature is controlled within the required range.

[0059] During the heating process, tetrabromoethane and substances with lower boiling points gradually vaporize to form steam, while impurities with higher boiling points remain at the bottom of the distillation tank 5. The steam enters the air inlet slot 19 of the separation mechanism 2 through the exhaust port 7 at the top of the distillation tank 5, and then passes upward through the activated carbon plate 12 in the movable slide frame 11. The activated carbon plate 12 adsorbs the pigment, odor and some impurity gases in the steam to achieve preliminary purification of tetrabromoethane steam. The movable slide 10 slides in the first slide groove 13 to guide the steam to evenly pass through different positions of the activated carbon plate 12, avoiding local excessive adsorption and ensuring that each area of ​​the activated carbon plate 12 can fully exert the adsorption effect.

[0060] The steam after preliminary purification by the activated carbon plate 12 enters the condenser 14. In the condenser 14, the steam is cooled and recondensed into liquid tetrabromoethane. The cooling shell 26 and the heat conducting ring 30 outside the condenser 14 accelerate the heat transfer and improve the condensation efficiency. The cooling medium such as cooling water flows into the cooling cavity 27 from the water inlet 28, absorbs the heat of the condenser 14 and then flows out from the water outlet 29, forming a continuous cycle.

[0061] Liquid tetrabromoethane flows out from the other end of the condenser tube 14 and enters the collecting tank 15 for collection and storage. Through the observation window 31 and the scale bar 32, the operator can monitor the liquid level and material status in the collecting tank 15 in real time.

[0062] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A separation and purification device for producing tetrabromoethane, characterized in that: It comprises a distillation mechanism (1), a separation mechanism (2), a condensation mechanism (3) and a collection mechanism (4), The distillation mechanism (1) comprises a distillation tank (5), a feed inlet (6) and an exhaust port (7) are provided on the top of the distillation tank (5), and a heating component (8) is provided inside the distillation tank (5). The separation mechanism (2) comprises a separation box (9), a movable slide seat (10), a movable slide frame (11) and an activated carbon plate (12); the bottom of the separation box (9) is provided with an air inlet groove (19) connected to the exhaust port (7); the inner side of the separation box (9) is provided with a first slide groove (13) in a horizontal state; the movable slide seat (10) is slidably connected to the first slide groove (13); the bottom of the movable slide frame (11) is in contact with the top of the air inlet groove (19); the side of the movable slide frame (11) is fixedly connected to the movable slide seat (10); and the activated carbon plate (12) is fixedly arranged in the movable slide frame (11); The condensing mechanism (3) comprises a condensing pipe (14), one end of which is connected to the separation box (9). The collecting mechanism (4) comprises a material collecting tank (15), and the other end of the condensing pipe (14) is connected to the material collecting tank (15).

2. A separation and purification device for producing tetrabromoethane according to claim 1, characterized in that: The separation mechanism (2) further comprises a sliding baffle (16) and a telescopic baffle (17); a second sliding groove (18) in a horizontal state is provided on the inner side of the separation box (9); the two sliding baffles (16) are relatively slidably arranged in the second sliding groove (18); the two telescopic baffles (17) are arranged between the two sliding baffles (16); and the two ends of the telescopic baffle (17) are respectively fixedly connected to the corresponding sliding baffles (16); the area enclosed by the two sliding baffles (16) and the two telescopic baffles (17) constitutes the air inlet groove (19); and the bottom of the movable sliding frame (11) is in contact with the top of the sliding baffle (16) and the telescopic baffle (17).

3. A separation and purification device for producing tetrabromoethane according to claim 2, characterized in that: The side of the sliding baffle (16) is provided with a plurality of slots (20) arranged in a matrix, and both ends of the telescopic baffle (17) are matched and connected with the corresponding slots (20).

4. A separation and purification device for producing tetrabromoethane according to claim 3, characterized in that: The telescopic baffle (17) comprises a first baffle (21) and a second baffle (22); one end of the first baffle (21) is fixedly provided with an insert block (23) matched with a corresponding slot (20); the other end of the first baffle (21) is provided with a slot slidably matched with one end of the second baffle (22); the other end of the second baffle (22) is fixedly provided with an insert block (23) matched with the corresponding slot (20).

5. A separation and purification device for producing tetrabromoethane according to claim 1, characterized in that: The separation box (9) comprises a box body (24) and a box cover (25), wherein the box cover (25) is arranged on the top of the box body (24), and one end of the condensation pipe (14) is connected to the box cover (25).

6. A separation and purification device for producing tetrabromoethane according to claim 5, characterized in that: The box cover (25) is in an inverted funnel-shaped structure.

7. A separation and purification device for producing tetrabromoethane according to claim 1, characterized in that: The condensing mechanism (3) also includes a cooling shell (26), which is sleeved on the outside of the condensing tube (14), and a cooling cavity (27) is provided on the inside of the cooling shell (26), and a water inlet (28) and a water outlet (29) which are connected to the cooling cavity (27) are respectively provided at the bottom and the top of the cooling shell (26).

8. A separation and purification device for producing tetrabromoethane according to claim 1, characterized in that: The condensing mechanism (3) further comprises a heat-conducting ring (30), wherein a plurality of heat-conducting rings (30) are arranged in a rectangular shape on the outside of the condensing tube (14).

9. A separation and purification device for producing tetrabromoethane according to claim 1, characterized in that: The side of the aggregate tank (15) is provided with an observation window (31), and the side of the observation window (31) is provided with a scale bar (32).

10. A separation and purification device for producing tetrabromoethane according to claim 1, characterized in that: The heating component (8) includes an electric heating coil (33) and a temperature sensor (34). A heating chamber is opened on the side of the distillation tank (5). The electric heating coil (33) and the temperature sensor (34) are both arranged in the heating chamber, and the electric heating coil (33) is electrically connected to the temperature sensor (34).

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