Full-process continuous production device and production method for tetrabromobisphenol A

Abstract

The invention relates to the technical field of tetrabromobisphenol A production devices, in particular to a tetrabromobisphenol A full-process continuous production device and method. The tetrabromobisphenol A full-process continuous production device comprises two supporting frames, a reaction mechanism fixed to the supporting frames, a horizontal screw centrifuge fixed between the two supporting frames and a waste liquid storage tank fixed to the supporting frame on the other side. The crystallization mechanism is located between the reaction mechanism and the waste liquid storage tank and comprises a sealing tank, a supporting plate is fixed to the inner wall of the sealing tank, and a spiral heat exchange pipe is arranged on the upper side of the supporting plate. According to the tetrabromobisphenol A production device, the crystallization mechanism and the horizontal screw centrifugal machine are matched for use, after tetrabromobisphenol A is produced, the waste liquid storage tank and the sealing tank can form a U-shaped pipe, waste liquid flows back into the sealing tank through the weight of the waste liquid, the interior of the sealing tank is cleaned through the waste liquid, a solution entering the sealing tank cannot be diluted, and the production efficiency of tetrabromobisphenol A is improved. And it is ensured that the device can conduct production continuously and uninterruptedly.

Description

Technical Field

[0001] The invention relates to the technical field of tetrabromobisphenol A production devices, and in particular to a full-process continuous production device and a production method for tetrabromobisphenol A. Background Art

[0002] Tetrabromobisphenol A is a derivative of bisphenol A, a white powder, mainly used as an additive for plastic products, and is one of the commonly used brominated flame retardants. In order to efficiently and stably produce tetrabromobisphenol A, a full-process continuous production system of tetrabromobisphenol A is required for processing, among which improving the purity of tetrabromobisphenol A through crystallization is the most important, such as the circulating crystallization device for tetrabromobisphenol A production disclosed in publication number CN115487529B.

[0003] Tetrabromobisphenol A is toxic to a certain extent and can cause certain harm to the human body and the environment. When producing tetrabromobisphenol A, solid tetrabromobisphenol A produced by crystallization will remain in the device, but the device is cleaned by adding clean water. In order to ensure the dryness of the device, a long time of processing is required, otherwise the solution will be diluted during continued production. During production, more devices are required to coordinate, and production work cannot be continued uninterruptedly. Summary of the invention

[0004] In view of the above-mentioned shortcomings of the prior art, the present invention provides a full-process continuous production device and production method of tetrabromobisphenol A, which can effectively solve the problem that the prior art cannot carry out production work continuously and uninterruptedly.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: The present invention provides a full-process continuous production device of tetrabromobisphenol A, comprising two support frames, a reaction mechanism fixed on one of the support frames, a horizontal screw centrifuge fixed between the two support frames, and a waste liquid storage tank fixed on the other support frame; A crystallization mechanism located between the reaction mechanism and the waste liquid storage tank, the crystallization mechanism comprising a sealed tank, a support plate is fixed to the inner wall of the sealed tank, and a spiral heat exchange tube is provided on the upper side of the support plate; A control mechanism fixed to the lower end of the waste liquid storage tank, the control mechanism comprising an adjustment component, the surface of the adjustment component being connected to an anti-blocking component; The regulating assembly comprises an L-shaped tube connected to the horizontal screw centrifuge and the waste liquid storage tank, an arc groove is formed at the upper end of the L-shaped tube, a fixing frame is fixed to the inner wall of the L-shaped tube, an elastic member 1 is fixed to the lower end of the fixing frame, an indirectly driven sealing cover is slidably connected in the L-shaped tube, and a plurality of rectangular grooves are formed on the outer surface of the sealing cover; During production, the rectangular groove is hermetically sealed by the L-shaped tube. After production, the rectangular groove is hermetically connected to the arc groove, so that the waste liquid storage tank is connected to the L-shaped tube and the sealed tank, and the solution stored in the waste liquid storage tank enters the sealed tank again.

[0006] Preferably, the reaction mechanism comprises an insulating shell, a reaction tank is fixed inside the insulating shell, a surface of the reaction tank is connected to a plurality of liquid feed pipes, an upper end of the reaction tank is connected to a plurality of solid feed pipes, a screening funnel is fixed inside the reaction tank, an extraction tank is fixed at the lower end of the reaction tank, and the extraction tank is connected to the sealing tank by a solution pumping device.

[0007] Preferably, a liquid pump is fixed to the upper end of the support plate, a liquid pumping pipe penetrating the support plate is fixed to the input end of the liquid pump, the output end of the liquid pump is connected to the spiral heat exchange tube, and the surface of the spiral heat exchange tube is connected to a liquid outlet pipe penetrating the support plate.

[0008] Preferably, a threaded rod is provided in the L-shaped tube, an open groove is opened at the lower end of the threaded rod, a cross rod is slidably connected in the open groove, a motor is provided on the lower side of the adjustment component, and the output end of the motor is interconnected with the lower end of the cross rod.

[0009] Preferably, the horizontal screw centrifuge adopts a waste liquid pumping device connected to the L-shaped tube.

[0010] Preferably, the anti-blocking component includes a sealing pipe, the outer surface of the sealing pipe is connected to a liquid flow pipe, the outer surface of the sealing pipe is provided with a plurality of liquid outlet holes 1, a movable pipe is slidably connected inside the sealing pipe, the outer surface of the movable pipe is provided with a plurality of liquid outlet holes 2, the liquid outlet holes 1 are airtightly blocked or connected with the liquid outlet holes 2, an elastic part 2 is fixed between the movable pipe and the inner wall of the sealing pipe, and a limiting ring for limiting the movable pipe is fixed inside the sealing pipe.

[0011] Preferably, one-way valves are provided at the connection points between the sealing pipe and the L-shaped pipe, and between the liquid flow pipe and the sealing pipe.

[0012] A production method based on a full-process continuous production device of tetrabromobisphenol A, the production steps of which are: S1, placing a raw material into a reaction mechanism for bromination reaction, and then separating a solid catalyst in the solution through a screening funnel; S2, the solution flows into an extraction tank, an organic solution is added thereto, and tetrabromobisphenol A in the reaction mixture is separated by extraction; S3, the crude tetrabromobisphenol A product obtained by extraction is pumped into a sealed tank, the solution is cooled and crystallized by recrystallization, and finally centrifuged by a horizontal screw centrifuge to obtain tetrabromobisphenol A with high purity; S4. The waste liquid in the waste liquid storage tank enters the sealed tank again and is flushed out of the residual toxic tetrabromobisphenol A through the pumping of the pump and the pumping pipe.

[0013] Compared with the known prior art, the technical solution provided by the present invention has the following beneficial effects: First, the device cooperates with the horizontal screw centrifuge through the crystallization mechanism. After the production of tetrabromobisphenol A is completed, the waste liquid storage tank and the sealed tank can form a U-shaped tube. The waste liquid can flow back into the sealed tank by its own weight, and the sealed tank can be cleaned with the waste liquid. Not only can the residual solid tetrabromobisphenol A be cleaned, but most importantly, when the device is put into production again, the solution entering the sealed tank will not be diluted, ensuring that the device can continue to carry out production work uninterruptedly.

[0014] Second, when the device is in the production process, the liquid outlet hole 2 and the liquid outlet hole 1 will not remain overlapped, that is, the solid tetrabromobisphenol A crystallized in the sealed tank cannot enter the sealed pipe, ensuring that the device will not cause blockage during production, and when cleaning, when the water pressure in the sealed tank and the waste liquid storage tank is the same, the movable tube will be reset, regardless of whether it is in production or cleaning status, the tetrabromobisphenol A in the sealed tank cannot enter the sealed pipe.

[0015] Third, during production, the liquid pump pumps the solution to exchange heat in the spiral heat exchange tube, so that the solution in the sealed tank is not always static, and the solution in it is in a flowing state, which can replace the work of the stirring blades, while ensuring the normal production of the solution, reducing the residual amount of tetrabromobisphenol A solid in the sealed tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the overall internal structure of the present invention; Figure 3 It is a schematic diagram of the internal structure of the reaction mechanism of the present invention; Figure 4 It is a schematic diagram of part of the internal structure of the present invention; Figure 5 It is a schematic diagram of the internal structure of the crystallization mechanism of the present invention; Figure 6It is a schematic diagram of the internal structure of the control mechanism of the present invention; Figure 7 It is a schematic diagram of the internal structure of the regulating component of the present invention; Figure 8 It is a schematic diagram of the internal structure of the anti-blocking component of the present invention; Fig. 9 This is a schematic diagram of the position of the sealing cover when the regulating assembly of the present invention is working.

[0018] Figure numerals: 1, support frame; 2, reaction mechanism; 3, crystallization mechanism; 4, horizontal screw centrifuge; 5, control mechanism; 6, waste liquid storage tank; 21, insulation shell; 22, reaction tank; 23, liquid feed pipe; 24, solid feed pipe; 25, screening funnel; 26, extraction tank; 31, sealing tank; 32, support plate; 33, liquid pump; 34, liquid pump; 35, spiral heat exchange tube; 36, liquid outlet pipe; 51, Adjustment component; 52, anti-blocking component; 53, motor; 54, liquid flow pipe; 511, L-shaped pipe; 512, arc groove; 513, fixing frame; 514, elastic part 1; 515, threaded rod; 516, cross rod; 517, sealing cover; 518, rectangular groove; 521, sealing pipe; 522, liquid outlet hole 1; 523, movable pipe; 524, liquid outlet hole 2; 525, limiting ring; 526, elastic part 2. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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.

[0020] The present invention will be further described below in conjunction with the embodiments.

[0021] Example 1: Reference Figures 1 to 9 , a full-process continuous production device of tetrabromobisphenol A, comprising: two support frames 1, a reaction mechanism 2 fixed on one of the support frames 1, a horizontal screw centrifuge 4 fixed between the two support frames 1 and a waste liquid storage tank 6 fixed on the other support frame 1; A crystallization mechanism 3 located between the reaction mechanism 2 and the waste liquid storage tank 6; A control mechanism 5 is fixed to the lower end of the waste liquid storage tank 6 .

[0022] It should be noted that the raw materials and various catalysts are placed in the reaction mechanism 2, and the raw materials need to be added in corresponding proportions. Through the catalysis of the catalyst, a bromination reaction can be carried out in the reaction mechanism 2 to obtain a solid-liquid mixture, and then the solid catalyst is separated from the solution by filtering and separation. The liquid mixture flows downward and the catalyst is added again. The tetrabromobisphenol A in the liquid mixture is separated by extraction, and then the purity of the tetrabromobisphenol A is improved by crystallization. During the crystallization process, tetrabromobisphenol A will remain on the inner wall of the crystallization mechanism 3, and tetrabromobisphenol A will affect the subsequent crystallization and also has certain toxicity. The control mechanism 5 is used to flow the waste liquid in the waste liquid storage tank 6 back to the crystallization mechanism 3, which will not affect the speed of tetrabromobisphenol A during subsequent crystallization. At the same time, the remaining tetrabromobisphenol A will also be discharged from the device without causing waste.

[0023] Further explanation, in order to obtain the crude product of tetrabromobisphenol A, such as Figure 3 As shown, the reaction mechanism 2 includes an insulation shell 21. The synthesis of tetrabromobisphenol A is mainly a bromination reaction of bisphenol A and bromine. The reaction temperature is controlled between 20-30°C. This temperature range is conducive to controlling the reaction rate and selectivity. The insulation shell 21 can serve the purpose of insulation. A reaction tank 22 is fixed in the insulation shell 21. The surface of the reaction tank 22 is connected with a plurality of liquid feed pipes 23. The upper end of the reaction tank 22 is connected with a plurality of solid feed pipes 24. Tetrabromobisphenol A is toxic, so the reaction tank 22 has a certain sealing performance. The raw materials and catalysts enter the reaction tank 22 through the liquid feed pipe 23 and the solid feed pipe 24. The hydrogen bromide generated in the bromination reaction will be discharged through the solid feed pipe 24 to the tail gas treatment device for absorption; Then, a screening funnel 25 is fixed in the reaction tank 22, and an extraction tank 26 is fixed at the lower end of the reaction tank 22. The organic solution is dropped into the filtered liquid mixture for extraction, and tetrabromobisphenol A therein is separated from the solution. Then, the liquid mixture is subjected to liquid separation treatment. The solubility of a substance in different solvents is different. Extraction is based on this characteristic. A solvent that is immiscible with the original solvent and has a greater solubility for the solute is selected to transfer the solute from the original solution to the solvent.

[0024] Further explanation: In order to make the crude tetrabromobisphenol A product crystallize better, Figure 5As shown, the crystallization mechanism 3 includes a sealed tank 31, and the extraction tank 26 is connected to the sealed tank 31 by a solution pumping device. The solution pumping device is composed of a water pump and a pipeline, which is used to transport the crude tetrabromobisphenol A product. The tetrabromobisphenol A left after extraction and separation will be pumped into the sealed tank 31. A support plate 32 is fixed to the inner wall of the sealed tank 31, and a spiral heat exchange tube 35 is provided on the upper side of the support plate 32. A liquid pump 33 is fixed to the upper end of the support plate 32. A liquid pump 34 that penetrates the support plate 32 is fixed to the input end of the liquid pump 33. The output end of the liquid pump 33 is connected to the spiral heat exchange tube 35 is connected, and the surface of the spiral heat exchange tube 35 is connected to a liquid outlet pipe 36 that penetrates the support plate 32. The liquid pump 33 extracts the tetrabromobisphenol A solution in the sealed tank 31 through the liquid outlet pipe 34. The tetrabromobisphenol A solution will enter the spiral heat exchange tube 35 for heat exchange, and then flow back into the sealed tank 31 through the liquid outlet pipe 36. The tetrabromobisphenol A therein is not always static by the liquid extraction, which replaces the work of the stirring blade and can prevent tetrabromobisphenol A crystals from remaining on the stirring blade. There is no need to deliberately clean the sealed tank 31, ensuring that the device can carry out production work continuously and uninterruptedly.

[0025] Further explanation, in order to prevent the waste liquid entering the waste liquid storage tank 6 from flowing back, as Figure 7 As shown, the control mechanism 5 includes an adjustment component 51, the surface of the adjustment component 51 is connected to an anti-blocking component 52, the adjustment component 51 includes an L-shaped tube 511 connected to the horizontal screw centrifuge 4 and the waste liquid storage tank 6, the horizontal screw centrifuge 4 adopts a waste liquid pumping device connected to the L-shaped tube 511, the waste liquid pumping device is the same as the solution pumping device, but the solution used for pumping is different, the upper end of the L-shaped tube 511 is provided with an arc groove 512, the inner wall of the L-shaped tube 511 is fixed with a fixing frame 513, the lower end of the fixing frame 513 is fixed with an elastic member 514, and the L-shaped tube 511 is slidably connected with an indirectly driven The sealing cover 517 has a plurality of rectangular grooves 518 on its outer surface, and a threaded rod 515 is provided in the L-shaped tube 511, and the threaded rod 515 is threadedly connected to the sealing cover 517. When the waste liquid pumping device pumps waste liquid into the waste liquid storage tank 6, the waste liquid flows from bottom to top, and the liquid impulse of the waste liquid flow pushes the threaded rod 515 and the sealing cover 517 to move upward at the same time, so that the rectangular groove 518 is in airtight communication with the arc groove 512. However, when the waste liquid pumping device stops, the impulse of the waste liquid flow is lost, and the rectangular groove 518 and the arc groove 512 will always maintain an airtight seal. Then, an open groove is provided at the lower end of the threaded rod 515, and a cross rod 516 is slidably connected in the open groove. A motor 53 is provided on the lower side of the adjustment component 51, and the output end of the motor 53 is connected to the lower end of the cross rod 516. When the cross rod 516 drives the threaded rod 515 to rotate, the sealing cover 517 will first be limited by the L-shaped tube 511. Under the action of the threaded connection, the sealing cover 517 will move up and down along the threaded rod 515. When the production is completed and the waste liquid needs to enter the crystallization mechanism 3 again, the sealing cover 517 needs to move upward to keep the rectangular groove 518 and the arc groove 512 in airtight connection.

[0026] Further explanation, in order to prevent the tetrabromobisphenol A crystals in the sealed tank 31 from clogging the pipeline, as shown in FIG. Figure 8 As shown, the anti-blocking component 52 includes a sealing pipe 521, the outer surface of the sealing pipe 521 is connected to the liquid flow pipe 54, the outer surface of the sealing pipe 521 is provided with a plurality of first liquid outlet holes 522, a movable pipe 523 is slidably connected in the sealing pipe 521, the outer surface of the movable pipe 523 is provided with a plurality of second liquid outlet holes 524, the first liquid outlet holes 522 and the second liquid outlet holes 524 are hermetically blocked or connected, an elastic member 2 526 is fixed between the movable pipe 523 and the inner wall of the sealing pipe 521, a limiting ring 525 for limiting the movable pipe 523 is fixed in the sealing pipe 521, and the sealing pipe 521 and the L One-way valves are provided at the connection points between the shaped tube 511 and the liquid flow tube 54 and the sealed pipe 521. When the catalyst or waste liquid is not added into the sealed tank 31 through the sealed pipe 521, the positions of the liquid outlet hole 1 522 and the liquid outlet hole 2 524 are staggered, so that the tetrabromobisphenol A crystals in the sealed tank 31 cannot enter the sealed pipe 521 through the liquid outlet hole 1 522. When the catalyst or waste liquid enters the sealed pipe 521, under the impact force of the liquid flow, the movable tube 523 will move to fit with the limit ring 525, and at this time, the liquid outlet hole 1 522 and the liquid outlet hole 2 524 will overlap.

[0027] The working principle of the present invention is as follows: raw materials and various catalysts are placed in the reaction mechanism 2 through the liquid feed pipe 23 and the solid feed pipe 24, and the reaction mechanism 2 with the raw materials added in corresponding proportions can carry out bromination reaction, and a solid-liquid mixture is obtained after the reaction. The hydrogen bromide generated during the reaction will be discharged to the tail gas treatment device through the solid feed pipe 24, and then the solid catalyst and the solution are filtered and separated by a screening funnel 25, and the liquid mixture flows downward to the extraction tank 26 to add the catalyst again, and the tetrabromobisphenol A in the liquid mixture is separated by extraction, and then the crude tetrabromobisphenol A product is retained in the extraction tank 26 by liquid separation; The crude tetrabromobisphenol A product is pumped into the sealed tank 31 by using a solution pumping device. After the crude product is dissolved by adding toluene or xylene, the liquid pump 33 is started to extract the tetrabromobisphenol A solution in the sealed tank 31 through the liquid pumping pipe 34. The tetrabromobisphenol A solution enters the spiral heat exchange tube 35 for heat exchange, and then flows back into the sealed tank 31 through the liquid outlet pipe 36. The tetrabromobisphenol A therein is not always static by the liquid pumping, which replaces the work of the stirring blade and can prevent the tetrabromobisphenol A crystals from remaining on the stirring blade, ensuring that the device can continuously and uninterruptedly carry out production work. Then, the solid-liquid mixture flows into the horizontal screw centrifuge 4 below to separate it thoroughly, and the purified solid tetrabromobisphenol A is collected. The remaining waste liquid is pumped into the L-shaped tube 511 by the waste liquid pumping device; When the waste liquid pumping device pumps the waste liquid into the waste liquid storage tank 6, the waste liquid flows from bottom to top, and the liquid impulse of the waste liquid flow will push the threaded rod 515 and the sealing cover 517 to move upward at the same time, so that the rectangular groove 518 and the arc groove 512 are in airtight communication. However, when the waste liquid pumping device stops, the impulse of the waste liquid flow is lost, and the rectangular groove 518 and the arc groove 512 will always maintain an airtight seal to prevent the waste liquid in the waste liquid storage tank 6 from flowing back downward. When the production is completed and the waste liquid needs to enter the crystallization mechanism 3 again, the motor 53 is started to drive the cross rod 516 and the threaded rod 515 to rotate, so that the sealing cover 517 will move upward, the rectangular groove 518 and the arc groove 512 will always be in airtight communication, and the waste liquid stored in the waste liquid storage tank 6 will flow into the sealing pipe 521 through the L-shaped tube 511; Under the impact of the liquid flow, the movable tube 523 will move to fit the limiting ring 525, and the limiting ring 525 will squeeze the elastic part 2 526 to shrink it. At this time, the liquid outlet hole 1 522 and the liquid outlet hole 2 524 will overlap, and the waste liquid will be able to enter the sealed tank 31. At this time, the sealed tank 31, the waste liquid storage tank 6, the L-shaped tube 511 and the arc groove 512 will become a U-shaped tube, and the waste liquid in the waste liquid storage tank 6 will also enter the sealed tank 31 without the need for a pumping device. Then the liquid extraction pump 33 draws the waste liquid into the spiral heat exchange tube 35 for flow. After the waste liquid flows for a period of time, all the remaining crystals will be taken away. When the waste liquid pumping device pumps the waste liquid to the waste liquid storage tank 6 for storage again, the device can continue to be used for production work.

[0028] Example 2: This example discloses a production method based on the full-process continuous production device of tetrabromobisphenol A in Example 1, and the specific production steps are: S1, putting the raw materials into the reaction mechanism 2 for bromination reaction, the raw materials need to be added in a certain proportion, and a solid-liquid mixture can be obtained after the reaction. The hydrogen bromide generated during the reaction will be discharged into the tail gas treatment device through the solid feed pipe 24, and then the solid catalyst in the solution will be separated through the screening funnel 25; S2, the solution flows into the extraction tank 26, an organic solution is added thereto, tetrabromobisphenol A in the reaction mixture is separated by extraction, and then the crude tetrabromobisphenol A product is retained in the extraction tank 26 by liquid separation; S3, the crude tetrabromobisphenol A product obtained by extraction is pumped into a sealed tank 31, and the solution is cooled and crystallized by recrystallization. After the crude product is dissolved by the added toluene or xylene, the liquid pump 33 is started to extract the tetrabromobisphenol A solution in the sealed tank 31 through the liquid extraction pipe 34, and the tetrabromobisphenol A solution enters the spiral heat exchange tube 35 for heat exchange to ensure that the temperature of the solution is low. Finally, the horizontal screw centrifuge 4 is used for centrifugation to obtain tetrabromobisphenol A with high purity; S4, the waste liquid in the waste liquid storage tank 6 enters the sealed tank 31 again, and the residual toxic tetrabromobisphenol A is flushed out by the pumping pump 33 and the pumping pipe 34, so as to ensure that the device can work continuously and uninterruptedly and that no tetrabromobisphenol A produced by crystallization will remain in the device.

[0029] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A full-process continuous production device for tetrabromobisphenol A, characterized in that: include: Two support frames (1), a reaction mechanism (2) fixed on one of the support frames (1), a horizontal screw centrifuge (4) fixed between the two support frames (1), and a waste liquid storage tank (6) fixed on the other support frame (1); a crystallization mechanism (3) located between the reaction mechanism (2) and the waste liquid storage tank (6), the crystallization mechanism (3) comprising a sealed tank (31), a support plate (32) being fixed to the inner wall of the sealed tank (31), and a spiral heat exchange tube (35) being provided on the upper side of the support plate (32); A control mechanism (5) fixed to the lower end of the waste liquid storage tank (6), the control mechanism (5) comprising an adjustment component (51), the surface of the adjustment component (51) being connected to an anti-blocking component (52); The regulating assembly (51) comprises an L-shaped tube (511) communicating with the horizontal screw centrifuge (4) and the waste liquid storage tank (6); an arc-shaped groove (512) is formed at the upper end of the L-shaped tube (511); a fixing frame (513) is fixed to the inner wall of the L-shaped tube (511); an elastic member (514) is fixed to the lower end of the fixing frame (513); an indirectly driven sealing cover (517) is slidably connected inside the L-shaped tube (511); and a plurality of rectangular grooves (518) are formed on the outer surface of the sealing cover (517); During production, the rectangular groove (518) is hermetically sealed by the L-shaped tube (511). After production is completed, the rectangular groove (518) is hermetically connected to the arc-shaped groove (512), allowing the waste liquid storage tank (6) to communicate with the L-shaped tube (511) and the sealed tank (31), and the solution stored in the waste liquid storage tank (6) enters the sealed tank (31) again.

2. A full-process continuous production device for tetrabromobisphenol A according to claim 1, characterized in that: The reaction mechanism (2) comprises a heat-insulating shell (21), a reaction tank (22) being fixed inside the heat-insulating shell (21), a plurality of liquid feed pipes (23) being connected to the surface of the reaction tank (22), a plurality of solid feed pipes (24) being connected to the upper end of the reaction tank (22), a screening funnel (25) being fixed inside the reaction tank (22), an extraction tank (26) being fixed to the lower end of the reaction tank (22), and the extraction tank (26) being connected to the sealing tank (31) by means of a solution pumping device.

3. A full-process continuous production device for tetrabromobisphenol A according to claim 1, characterized in that: A liquid pump (33) is fixed to the upper end of the support plate (32); a liquid pumping pipe (34) penetrating the support plate (32) is fixed to the input end of the liquid pump (33); an output end of the liquid pump (33) is in communication with a spiral heat exchange tube (35); and a liquid outlet pipe (36) penetrating the support plate (32) is connected to the surface of the spiral heat exchange tube (35).

4. A full-process continuous production device for tetrabromobisphenol A according to claim 1, characterized in that: A threaded rod (515) is provided in the L-shaped tube (511), an open slot is provided at the lower end of the threaded rod (515), a cross rod (516) is slidably connected in the open slot, a motor (53) is provided at the lower side of the adjustment component (51), and an output end of the motor (53) is connected to the lower end of the cross rod (516).

5. A full-process continuous production device for tetrabromobisphenol A according to claim 4, characterized in that: The horizontal screw centrifuge (4) is connected to the L-shaped pipe (511) by a waste liquid pumping device.

6. A full-process continuous production device for tetrabromobisphenol A according to claim 1, characterized in that: The anti-blocking component (52) comprises a sealing pipe (521), the outer surface of the sealing pipe (521) is connected to a liquid flow pipe (54), the outer surface of the sealing pipe (521) is provided with a plurality of first liquid outlet holes (522), a movable pipe (523) is slidably connected inside the sealing pipe (521), the outer surface of the movable pipe (523) is provided with a plurality of second liquid outlet holes (524), the first liquid outlet holes (522) and the second liquid outlet holes (524) are hermetically blocked or connected, a second elastic member (526) is fixed between the movable pipe (523) and the inner wall of the sealing pipe (521), and a limiting ring (525) for limiting the movable pipe (523) is fixed inside the sealing pipe (521).

7. A full-process continuous production device for tetrabromobisphenol A according to claim 6, characterized in that: One-way valves are provided at the connection points between the sealing pipe (521) and the L-shaped pipe (511), and between the liquid flow pipe (54) and the sealing pipe (521).

8. A production method based on the full-process continuous production device of tetrabromobisphenol A according to any one of claims 1 to 7, characterized in that: The production steps are: S1, placing the raw materials into the reaction mechanism (2) for bromination reaction, and then separating the solid catalyst in the solution through the screening funnel (25); S2, the solution flows into an extraction tank (26), an organic solution is added thereto, and tetrabromobisphenol A in the reaction mixture is separated by extraction; S3, the crude tetrabromobisphenol A product obtained by extraction is pumped into the sealed tank (31), the solution is cooled and crystallized by recrystallization, and finally centrifuged by the horizontal screw centrifuge (4) to obtain tetrabromobisphenol A with higher purity; S4. The waste liquid in the waste liquid storage tank (6) enters the sealed tank (31) again, and the residual toxic tetrabromobisphenol A is flushed out through the pumping of the liquid pump (33) and the liquid pumping pipe (34).

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