Oxidation reaction kettle for bromine recovery

Abstract

The invention relates to the technical field of bromine recovery, in particular to an oxidation reaction kettle for bromine recovery. Comprising a reaction tank, a rotating shaft is rotatably connected in the reaction tank, and a plurality of stirring plates are rotatably connected to the lower part of the rotating shaft; the gas injection part is arranged at the lower part of the reaction tank, and a plurality of through holes are formed in the gas injection part; the fixed shell is fixedly connected to the upper part in the reaction tank, and a sliding column is connected in the fixed shell in a sliding manner; the fixed frame is fixedly connected to the lower part of the reaction tank, the gas injection part penetrates through the fixed frame, a sliding plate is connected in the fixed frame in a sliding manner, and a through hole is formed in the sliding plate. The content of bromine in the solution is judged according to the boiling degree of the solution in the reaction tank, and then the circulation area of chlorine in the gas injection part is changed by moving the sliding plate, so that the boiling degree of the solution is kept within a certain range, the situation that byproducts are generated due to additional reaction of the solution is inhibited, and the quality and purity of the recycled bromine are guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of bromine recovery, and in particular to an oxidation reaction kettle used for bromine recovery. Background Art

[0002] Bromine is an important chemical raw material, widely used in the pharmaceutical, pesticide, dye and flame retardant industries. In the industrial production process, bromine is usually recovered from industrial wastewater or other solutions. The existing bromine recovery process is usually as follows: first, the bromine-containing solution is initially treated in a static reactor; then, the solution is transferred to an external heat exchange oxidation reactor; chlorine is intermittently and slowly injected into the oxidation reactor to cause the solution to undergo an oxidation reaction. As the reaction proceeds, bromine gradually precipitates and floats on the surface of the solution in an oily form; finally, the bromine and the solution are separated by a liquid separator and the bromine is collected.

[0003] However, in actual operation, after the solution is injected into the reactor, it is easy to inject too much chlorine at a time because it is impossible to accurately judge the specific content of bromine in the solution. Excessive chlorine will cause the solution to boil violently due to the violent oxidation reaction and release a large amount of heat. Excessive temperature will change the reaction path of the solution and generate unnecessary by-products, thereby affecting the purity and quality of the final bromine product. Summary of the invention

[0004] In view of the problem that the amount of chlorine gas injected at a single time is difficult to judge and easily leads to the generation of by-products in the solution, the present invention provides an oxidation reactor for bromine recovery.

[0005] The technical scheme is as follows: An oxidation reactor for bromine recovery, comprising: a reaction tank, a rotating shaft rotatably connected in the reaction tank, a disc-shaped cooling tube wound around the outer side of the reaction tank, a motor fixedly connected to the reaction tank, an output shaft of the motor fixedly connected to the rotating shaft, and a plurality of stirring plates rotatably connected to the lower part of the rotating shaft; a gas injection piece arranged at the lower part of the reaction tank, and a plurality of gas injection holes arranged on the gas injection piece; a fixed shell fixedly connected to the upper part of the reaction tank, a sliding column slidably connected in the fixed shell, and a floating ball arranged at the lower end of the sliding column; a fixed frame fixedly connected to the lower part of the reaction tank, the gas injection piece penetrates the fixed frame, a sliding plate slidably connected in the fixed frame, and a through hole is arranged on the sliding plate, and the through hole of the sliding plate is used to change the flow area of ​​chlorine gas in the gas injection piece; a detection mechanism arranged at the upper part of the reaction tank, and used to monitor the movement of the sliding column; a deflection mechanism arranged in the rotating shaft, and used to change the inclination angle of all the stirring plates.

[0006] As a preferred embodiment of the present invention, the projection range of the multiple gas injection holes on the gas injection member on the horizontal plane is located within the projection range of the multiple stirring plates on the horizontal plane, so as to increase the residence time of the chlorine bubbles in the solution.

[0007] As a preferred embodiment of the present invention, the detection mechanism includes: a plurality of elastic telescopic rods, all of which are fixedly connected to the upper part of the reaction tank, the telescopic ends of the elastic telescopic rods are slidably sealed with the reaction tank, and hydraulic oil is filled in the elastic telescopic rods; a plurality of sliding blocks, the number of which is the same as the number of the elastic telescopic rods, all of which are slidably connected to the fixed shell, the sliding blocks are provided with inclined surfaces, the fixed shell is slidably connected with a plurality of limit blocks, a first spring is fixedly connected between the limit blocks and the fixed shell, the telescopic ends of the elastic telescopic rods are provided with blind holes, the limit blocks limit the telescopic ends of the adjacent elastic telescopic rods through the blind holes, the limit blocks are provided with inclined surfaces, the sliding column is rotationally connected with a rotating block, the rotating block releases the limit of the telescopic ends of the adjacent elastic telescopic rods through the inclined surfaces of the sliding blocks and the limiting blocks, a fixed block is fixedly connected to the rotating shaft, and the fixed block is used to push the telescopic ends of the elastic telescopic rods to retract; a control component is provided at the lower part of the reaction tank, and is used to control the area of ​​the through hole on the sliding plate that is connected to the gas injection member.

[0008] As a preferred embodiment of the present invention, the control component includes: a fixed telescopic rod, fixedly connected to the lower part of the reaction tank, the telescopic end of the fixed telescopic rod is used to push the sliding plate to move; a liquid guide tube, connected to the fixed telescopic rod, a plurality of the elastic telescopic rods are connected to the liquid guide tube, and the fixed telescopic rod and the liquid guide tube are filled with hydraulic oil.

[0009] As a preferred embodiment of the present invention, the deflection mechanism includes: a rotating column, which is slidably connected to the rotating shaft, a cavity is provided in the rotating column, the lower end of the rotating shaft is rotatably connected to a fixed cylinder, a sliding rod is slidably and rotatably connected in the fixed cylinder, and the sliding rod is used to push the rotating column to move; a connecting pipe, which is connected to the lower part of the fixed cylinder, the connecting pipe is connected to the elastic telescopic rod on the lower side, and the fixed cylinder and the connecting pipe are both filled with hydraulic oil; a plurality of racks, the number of which is the same as the number of the stirring plates, are all arranged on the rotating column, and the racks are connected to adjacent stirring plates through gear transmission; an auxiliary cooling component is arranged at the lower part of the reaction tank, which is used to make the coolant in the disc cooling tube circulate in all the stirring plates; a guide component is arranged at the lower part of the reaction tank, which is used to control the time for the coolant to circulate in the gas injection part.

[0010] As a preferred embodiment of the present invention, the auxiliary cooling assembly includes: a fixed tube fixedly connected to the lower part of the reaction tank, one end of the fixed tube being connected to the disc-shaped cooling tube on the outer side of the reaction tank; two annular shells arranged on the rotating shaft, the lower annular shell being connected to the cavity in the rotating column through a pipeline, the annular shell being rotatably connected to an annular plate, and the chamber composed of the lower annular shell and the annular plate being connected to the fixed tube; a shunt pipe arranged in all the stirring plates, the shunt pipe being connected to the cavity in the rotating column, and the shunt pipe being connected to the disc-shaped cooling tube on the outer side of the reaction tank through the upper annular shell and the annular plate.

[0011] As a preferred embodiment of the present invention, the guide assembly includes: a sliding bent plate, slidably connected to the lower part of the reaction tank, the sliding bent plate is provided with a through hole, the through hole of the sliding bent plate is used to control the connectivity state of the fixed pipe, and an annular groove is provided on one side of the sliding bent plate; a fixed rod, fixedly connected to the sliding rod, the fixed rod slides in the annular groove of the sliding bent plate, so that the sliding bent plate and the sliding rod move synchronously.

[0012] As a preferred embodiment of the present invention, it also includes: a gas delivery mechanism, which is arranged at the upper part of the reaction tank and is used to make the chlorine gas in the upper part of the reaction tank react with the solution again, and the gas delivery mechanism includes: a first ring, which is slidably connected to the upper part of the rotating shaft, and the rotating shaft is provided with a cavity and a through hole, the cavity of the rotating shaft is connected with the reaction tank through the through hole, and the stirring plate is provided with an exhaust hole, and the exhaust hole of the stirring plate is connected with the cavity of the rotating shaft; a second ring, which is slidably connected to the upper part of the reaction tank, and a second spring is fixedly connected between the second ring and the reaction tank, the first ring is used to squeeze and push the second ring so that the gas in the upper part of the reaction tank enters the cavity of the rotating shaft, and the first ring is provided with a pull rope; a continuous motion component, which is arranged at the upper part of the reaction tank and is used to control the pull rope to drive the first ring to move back and forth up and down.

[0013] As a preferred embodiment of the present invention, the exhaust holes of the stirring plate are always tilted upward to prevent the secondary injected chlorine gas from gathering to generate large bubbles.

[0014] As a preferred embodiment of the present invention, the continuous motion component includes: an electric push rod fixedly connected to the upper part of the reaction tank, the telescopic end of the electric push rod is slidably sealed with the reaction tank, and the part of the telescopic end of the electric push rod located in the reaction tank is provided with a rectangular shell; a limit slider slidably connected in the rectangular shell, the limit slider is connected to the pull rope, and a fixed lever is fixed on the rotating shaft, and the fixed lever is used to intermittently push the limit slider to move, so that the pull rope intermittently pulls the first ring upward.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention determines the bromine content in the solution according to the boiling degree of the solution in the reaction tank, and then changes the flow area of ​​chlorine gas in the gas injection part by moving the sliding plate, so that the boiling degree of the solution is maintained within a certain range, thereby suppressing the situation where the solution produces by-products due to additional reactions, and ensuring the quality and purity of the recovered bromine.

[0016] 2. The present invention drives the rack to move by the rotating column in the deflection mechanism, changes the inclination angle of the stirring plate, shortens the length of the rising path of the chlorine bubbles, reduces the reaction time of the solution and the chlorine gas, and ensures the temperature stability of the solution during the reaction.

[0017] 3. The present invention guides the cooling liquid through the shunt pipe in the auxiliary cooling assembly, so that the stirring plate reduces the temperature of the solution around it, preventing the solution from generating excessive heat during the reaction, thereby affecting the efficiency of the easy reaction to produce bromine.

[0018] 4. The present invention uses the first ring in the gas transmission mechanism to drive the second ring to rise synchronously, and re-injects the unreacted chlorine into the solution to carry out a secondary reaction, thereby reducing the cost of chlorine in the bromine recovery process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the structure inside the reaction tank of the present invention; Figure 3 It is a three-dimensional structural schematic diagram of the parts at the rotating shaft and the sliding column of the present invention; Figure 4 It is a three-dimensional structural schematic diagram of the parts for fixing the telescopic rod and the catheter of the present invention; Figure 5 It is a three-dimensional structural schematic diagram of the parts of the sliding plate and the fixed telescopic rod of the present invention; Figure 6 It is a three-dimensional structural schematic diagram of the parts at the sliding block and the limiting block of the present invention; Figure 7 It is a three-dimensional structural schematic diagram of the parts of the stirring plate and the diverter pipe of the present invention; Figure 8 It is a three-dimensional structural schematic diagram of the sliding rod and the connecting pipe parts of the present invention; Fig. 9 It is a three-dimensional structural schematic diagram of the parts of the annular shell and the annular plate of the present invention; Fig.10 It is a schematic diagram of the three-dimensional structure of the parts at the first and second rings of the present invention; Fig.11 It is a three-dimensional structural schematic diagram of the parts at the limit sliding block and the fixed lever of the present invention.

[0020] Markings in the accompanying drawings: 1-reaction tank, 2-rotating shaft, 3-motor, 4-stirring plate, 5-gas injection part, 6-fixed shell, 7-sliding column, 8-fixed frame, 9-sliding plate, 201-elastic telescopic rod, 202-sliding block, 203-limiting block, 204-fixed block, 205-rotating block, 301-fixed telescopic rod, 302-liquid guide tube, 401-rotating column, 402-fixed cylinder, 403-sliding rod, 404-connecting tube, 405-rack, 501-fixed tube, 502-annular shell, 503-annular plate, 504-diverter tube, 601-sliding bent plate, 602-fixed rod, 701-first circular ring, 702-second circular ring, 703-pull rope, 801-electric push rod, 802-rectangular shell, 803-limiting slider, 804-fixed lever. DETAILED DESCRIPTION

[0021] The following is combined with Figure 1 -Attached Fig.11 , the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0022] Example 1: In the existing process of recovering bromine, after the bromine-containing solution is injected into the oxidation reactor, it is easy to inject too much chlorine at a time due to the inability to accurately determine the bromine content in the solution, resulting in a violent oxidation reaction of the solution, generating a large amount of heat in the solution, causing the reaction path of the solution to change, and generating unnecessary by-products, affecting the quality and purity of the prepared bromine.

[0023] An oxidation reactor for bromine recovery, please refer to the attached Figure 1 -Attached Figure 6As shown, it includes: a reaction tank 1, a rotating shaft 2 is rotatably connected inside the reaction tank 1, a disc-shaped cooling tube is wound around the outer side of the reaction tank 1, a motor 3 is fixedly connected to the reaction tank 1, the output shaft of the motor 3 is fixedly connected to the rotating shaft 2, and a plurality of stirring plates 4 are rotatably connected to the lower part of the rotating shaft 2; a gas injection member 5 is arranged at the lower part of the reaction tank 1, and a plurality of gas injection holes are arranged on the gas injection member 5; a fixed shell 6 is fixedly connected to the upper part of the reaction tank 1, a sliding column 7 is slidably connected inside the fixed shell 6, and a floating ball is arranged at the lower end of the sliding column 7; a fixed frame 8 is fixedly connected to the lower part of the reaction tank 1, the gas injection member 5 penetrates the fixed frame 8, a sliding plate 9 is slidably connected inside the fixed frame 8, and the sliding plate 9 is provided with a through hole, and the through hole of the sliding plate 9 is used to change the flow area of ​​chlorine in the gas injection member 5; the detection mechanism is arranged at the upper part of the reaction tank 1, and is used to monitor the movement of the sliding column 7; the deflection mechanism is arranged in the rotating shaft 2, and is used to change the inclination angle of all stirring plates 4, and the range of the projection of multiple gas injection holes on the gas injection member 5 on the horizontal plane is located within the projection of the stirring range of multiple stirring plates 4 on the horizontal plane, which is used to increase the retention time of chlorine bubbles in the solution. The detection mechanism includes: multiple elastic telescopic rods 201, which are all fixedly connected to the upper part of the reaction tank 1, and the telescopic ends of the elastic telescopic rods 201 are slidably sealed with the reaction tank 1, and the elastic telescopic rods 201 are elastically telescopic. The rod 201 is filled with hydraulic oil; multiple sliding blocks 202, the number of which is the same as the number of the elastic telescopic rod 201, are all slidably connected to the fixed shell 6, the sliding block 202 is provided with an inclined surface, the fixed shell 6 is slidably connected with multiple limit blocks 203, a first spring is fixedly connected between the limit block 203 and the fixed shell 6, the telescopic end of the elastic telescopic rod 201 is provided with a blind hole, the limit block 203 limits the telescopic end of the adjacent elastic telescopic rod 201 through the blind hole, the limit block 203 is provided with an inclined surface, the sliding column 7 is limited and rotatably connected with a rotating block 205, and the rotating block 205 is released by the inclined surface of the sliding block 202 and the inclined surface of the limit block 203 The telescopic ends of adjacent elastic telescopic rods 201 are limited, and a fixed block 204 is fixedly connected to the rotating shaft 2, and the fixed block 204 is used to push the telescopic end of the elastic telescopic rod 201 to retract; a control component is arranged at the lower part of the reaction tank 1, and is used to control the area of ​​the through hole on the sliding plate 9 that is connected to the gas injection part 5. The control component includes: a fixed telescopic rod 301, which is fixedly connected to the lower part of the reaction tank 1, and the telescopic end of the fixed telescopic rod 301 is used to push the sliding plate 9 to move; a liquid guide tube 302, which is connected to the fixed telescopic rod 301, and multiple elastic telescopic rods 201 are connected to the liquid guide tube 302, and hydraulic oil is injected into the fixed telescopic rod 301 and the liquid guide tube 302.

[0024] In the above scheme, it is intended to solve the problem that it is difficult to determine the flow rate of chlorine gas injected into the solution when the bromine content in the solution cannot be accurately determined; the parts in the device that are in direct contact with chlorine gas are all made of corrosion-resistant materials, a liquid inlet is provided in the middle of the reaction tank 1, a liquid outlet is provided at the lower part of the reaction tank 1, the disc-shaped cooling pipe outside the reaction tank 1 is connected to a liquid circulation device (an existing mechanism, not shown in the figure, used to control the flow rate of the coolant in the disc-shaped cooling pipe), the gas injection member 5 is connected to a gas delivery device (an existing mechanism, not shown in the figure, used to slowly inject chlorine gas into the gas injection member 5 at a stable pressure), and the gas injection member 5 is composed of an annular gas guide shell rotating with the rotating shaft 2. and a plurality of circumferentially uniformly distributed fixed air pipes, wherein one of the fixed air pipes penetrates the reaction tank 1 and the fixed frame 8 and is connected to the gas delivery device, a plurality of uniformly distributed gas injection holes are provided on the plurality of fixed air pipes, a control panel is provided on the reaction tank 1 (which is an existing mechanism, not shown in the figure), the liquid circulation device, the gas delivery device and the motor 3 are all electrically connected to the control panel, the number of stirring plates 4 can be changed according to the size of the actual oxidation reactor, the number of stirring plates 4 in the device is set to six, and the six stirring plates 4 are staggeredly distributed at the lower part of the rotating shaft 2, so as to extend the length of the rising path of the output chlorine bubbles in the gas injection member 5 and increase the time for the chlorine gas to contact the solution.

[0025] The liquid level of the solution injected into the reaction tank 1 is above all the stirring plates 4, preventing the stirring plates 4 from stirring the bromine floating on the surface of the solution, ensuring the effective stratification state of the bromine and the solution, and the highest point where the float ball on the sliding column 7 moves with the boiling of the solution is used to detect the boiling degree of the solution, so as to facilitate the adjustment of the speed of injecting chlorine into the solution. When the rotating block 205 contacts the sliding block 202 during the downward movement of the sliding column 7, the rotating block 205 rotates 90° without hindering the downward movement of the sliding column 7. The through hole of the sliding plate 9 is fan-shaped. The number of elastic telescopic rods 201 and the number of sliding blocks 202 in the device are both set to three, and the elastic telescopic rods 201 and the sliding blocks 202 are both set to three. The rod 201 (composed of a cylinder, a spring, a sliding straight rod and a piston, the sliding straight rod slides in a sealed manner with the cylinder through the piston, and the sliding straight rod is the telescopic end described below) is an existing mechanism, and the two elastic telescopic rods 201 on the upper side are both connected to the liquid guide tube 302. By pushing the sliding plate 9 into the fixed frame 8, the shielding area of ​​the sliding plate 9 on the gas injection part 5 is gradually increased. Since chlorine is injected into the gas injection part 5 at a constant pressure, the amount of chlorine injected into the solution is reduced, and the heat generated by the solution reaction is reduced, so that the solution temperature is maintained in a stable range, the solution is inhibited from undergoing additional reactions, and unnecessary by-products are avoided, thereby ensuring the quality and purity of the recovered bromine.

[0026] Working process: When the operator uses the device to recover bromine in the solution, the operator first filters out impurities in the solution through the static reactor, and then injects the solution into the reaction tank 1 through the liquid inlet. When the solution has completely covered all the stirring plates 4, the injection of the solution into the reaction tank 1 is stopped. The operator starts the motor 3, the liquid circulation device and the gas transmission device through the control panel. The output shaft of the motor 3 drives all the stirring plates 4 to rotate synchronously and slowly through the rotating shaft 2. The stirring plates 4 stir the solution. The liquid circulation device injects the coolant through the lower part of the disc-shaped cooling pipe outside the reaction tank 1. The cooling liquid flows in the disc-shaped cooling tube to cool the solution in the reaction tank 1, and the cooling liquid flows back to the liquid circulation device from the upper part of the disc-shaped cooling tube. The gas delivery device intermittently and slowly injects chlorine into the gas injection part 5 at a constant pressure. The chlorine enters the solution from the gas injection hole of the gas injection part 5 through the through hole of the sliding plate 9. The chlorine moves upward in the solution in the form of bubbles. The chlorine reacts with the solution to generate heat, and the solution boils. At the same time, the moving inclined stirring plate 4 extends the moving path of the bubbles, so that the chlorine reacts with the solution fully. Finally, the unreacted chlorine bubbles are mixed into the air above the solution in the reaction tank 1.

[0027] During the process of injecting chlorine into the solution by the gas injection part 5, if the flow rate of chlorine is too large, the solution will react violently and the surface of the solution will boil violently. The solution will push the sliding column 7 and its connected float to move upward, and the rotating block 205 on the sliding column 7 squeezes the inclined surfaces of several sliding blocks 202 in turn from bottom to top. Then, the sliding column 7 moves downward with the liquid surface under the action of its own gravity. The rotating block 205 avoids the sliding block 202 by rotating, and does not hinder the sliding column 7 from moving downward and resetting. If only the two sliding blocks 202 on the lower side are squeezed, the two sliding blocks 202 both move backward and squeeze the inclined surfaces of the adjacent limit blocks 203. The limit blocks 203 move downward and compress the first spring. The limit blocks 203 move out of the blind hole at the telescopic end of the adjacent elastic telescopic rod 201, and the telescopic end of the elastic telescopic rod 201 extends out, and the middle elastic telescopic rod 20 The hydraulic oil in 1 enters the fixed telescopic rod 301 through the liquid guide tube 302, and the telescopic end of the fixed telescopic rod 301 extends out and pushes the sliding plate 9 to move into the fixed frame 8. The communication area between the through hole of the sliding plate 9 and the gas injection part 5 is reduced, and the amount of chlorine gas injected into the solution by the gas injection part 5 is reduced, thereby reducing the boiling degree of the solution. The higher the boiling degree of the solution, the more sliding blocks 202 are triggered, and the sliding plate 9 moves a greater distance into the fixed frame 8. The hydraulic oil in the lower elastic telescopic rod 201 rotates all the stirring plates 4 through the deflection mechanism, and the inclination angle of the stirring plate 4 with the horizontal plane becomes larger. The path distance of the bubbles injected into the solution by the gas injection part 5 is shortened, and the contact time between the chlorine gas and the solution is shortened, which helps to reduce the boiling degree of the solution, reduce the heat generated by the reaction between the solution and the chlorine gas, and inhibit the generation of by-products in the solution reaction.

[0028] After the deflection mechanism controls the stirring plate 4 to rotate, the deflection mechanism causes the coolant in the disc cooling tube to flow in the stirring plate 4. Since the bubbles react with the solution near the stirring plate 4, the heat dissipation speed of the solution is further accelerated. As the rotating shaft 2 slowly rotates, the rotating shaft 2 causes the telescopic end of the elastic telescopic rod 201 to contract and reset through the fixed block 204. When the limit block 203 is aligned with the blind hole at the telescopic end of the elastic telescopic rod 201, the limit block 203 moves upward under the elastic force of the first spring connected thereto, and the limit block 203 is inserted into the blind hole at the telescopic end of the elastic telescopic rod 201, and the telescopic end of the elastic telescopic rod 201 resumes the limit position. The inclined surface of the limit block 203 pushes the sliding block 202 to move forward and reset, and the number of the elastic telescopic rods 201 triggered by the rotating block 205 on the sliding column 7 is used to monitor the boiling degree of the solution. The distance of the sliding plate 9 entering the fixed frame 8 is controlled accordingly to ensure that the flow rate of the chlorine gas injected into the solution is appropriate, so that the boiling degree of the solution remains stable. When the precipitation of bromine in the solution is completed, the operator turns off the motor 3, the liquid circulation device and the gas transmission device through the control panel, takes out the solution and bromine through the discharge port of the reaction tank 1, and separates the bromine through the liquid separation device. At this point, the device completes the bromine recovery operation.

[0029] For further information, please refer to the attached Figure 2 , Attachment Figure 3 , Attachment Figure 6 , Attachment Figure 8 and attached Fig. 9As shown, the deflection mechanism includes: a rotating column 401, which is slidably connected to the rotating shaft 2, a cavity is provided in the rotating column 401, the lower end of the rotating shaft 2 is rotatably connected to a fixed cylinder 402, a sliding rod 403 is slidably and rotatably connected in the fixed cylinder 402, and the sliding rod 403 is used to push the rotating column 401 to move; a connecting pipe 404, which is connected to the lower part of the fixed cylinder 402, the connecting pipe 404 is connected to the elastic telescopic rod 201 at the lower side, and the fixed cylinder 402 and the connecting pipe 404 are both filled with hydraulic oil ; A plurality of racks 405, the number of which is the same as the number of stirring plates 4, are all arranged on the rotating column 401, and the racks 405 and the adjacent stirring plates 4 are driven by gears; an auxiliary cooling component is arranged at the lower part of the reaction tank 1, and is used to make the coolant in the disc cooling pipe flow in all the stirring plates 4; a flow guide component is arranged at the lower part of the reaction tank 1, and is used to control the time for the coolant to flow in the gas injection part 5. The auxiliary cooling component includes: a fixed pipe 501, which is fixed to the lower part of the reaction tank 1, and one side of the fixed pipe 501 is fixed to the lower part of the reaction tank 1. The end is connected to the outer disc cooling pipe of the reaction tank 1; two annular shells 502 are arranged on the rotating shaft 2, the lower annular shell 502 is connected to the cavity in the rotating column 401 through a pipeline, the annular shell 502 is rotatably connected to the annular plate 503, and the chamber composed of the lower annular shell 502 and the annular plate 503 is connected to the fixed pipe 501; the shunt pipe 504 is arranged in all the stirring plates 4, the shunt pipe 504 is connected to the cavity in the rotating column 401, and the shunt pipe 504 is connected to the cavity in the rotating column 401 through the upper annular shell 502 and the annular plate 503. The plate 503 is connected to the disc-shaped cooling pipe on the outer side of the reaction tank 1, and the guide component includes: a sliding bent plate 601, which is slidably connected to the lower part of the reaction tank 1, and a through hole is set on the sliding bent plate 601. The through hole of the sliding bent plate 601 is used to control the connection state of the fixed tube 501, and an annular groove is set on one side of the sliding bent plate 601; a fixed rod 602 is fixed to the sliding rod 403, and the fixed rod 602 slides in the annular groove of the sliding bent plate 601, so that the sliding bent plate 601 and the sliding rod 403 move synchronously.

[0030] In the above scheme, the purpose is to further accelerate the dissipation rate of heat generated by the oxidation reaction in the solution and suppress the generation of by-products in the solution due to high temperature; the fixed tube 501 is a hard tube, which is used to fix the position of the lower annular shell 502 and the annular plate 503 unchanged, the shunt tube 504 penetrates the gear of the stirring plate 4 located in the rotating shaft 2, and the shunt tube 504 is a hose. The shunt tube 504 can rotate at a certain angle with the stirring plate 4. Since the stirring plate 4 guides the bubbles, the reaction between chlorine and the solution is mostly near the stirring plate 4. The coolant enters the cavity of the rotating column 401, flows through the shunt pipe 504 in all the stirring plates 4, and then flows back to the disc-shaped cooling tube through the upper annular shell 502 and the annular plate 503, thereby reducing the temperature of the solution near the stirring plate 4, assisting the cooling of the solution in the disc-shaped cooling tube, and further accelerating the discharge of heat in the solution. During the rotation of the rotating shaft 2, the fixed cylinder 402 and the reaction tank 1 are relatively stationary, and the sliding rod 403 rotates synchronously with the rotating shaft 2 under the action of the fixed rod 602, and the annular plate 503 does not rotate.

[0031] Working process: During the upward movement of the sliding column 7, when the rotating block 205 on the sliding column 7 contacts and pushes the inclined surface of the lowermost sliding block 202, the sliding block 202 moves backward, the limit of the telescopic end of the lowermost elastic telescopic rod 201 is released, the telescopic end of the elastic telescopic rod 201 extends, and the hydraulic oil in the elastic telescopic rod 201 enters the fixed cylinder 402 through the connecting pipe 404, the sliding rod 403 moves upward and pushes the rotating column 401 to move synchronously, and the rotating column 401 rotates all the stirring plates 4 through the rack 405 on it. The stirring plate 4 moves, and the inclination angle of the stirring plate 4 increases. As the stirring plate 4 stirs the solution, the rotating shaft 2 contacts the fixed block 204 and pushes the telescopic end of the lowermost elastic telescopic rod 201 to gradually shrink and reset. The hydraulic oil in the fixed cylinder 402 flows back to the lowermost elastic telescopic rod 201 through the connecting pipe 404. Each time chlorine is injected, if the boiling degree of the solution reaches the lowermost sliding block 202, the stirring plate 4 will maintain a large inclination angle for a period of time, thereby shortening the contact time between the chlorine bubbles and the solution and reducing the heat generated by the solution reaction.

[0032] When the sliding rod 403 moves upward, the sliding rod 403 drives the sliding bent plate 601 to move upward through the fixed rod 602, and the through hole on the sliding bent plate 601 is connected with the fixed tube 501. The coolant injected into the disc-shaped cooling tube by the liquid circulation device enters the fixed tube 501, and the coolant flows back into the disc-shaped cooling tube through the fixed tube 501, the lower annular shell 502, the rotating column 401, the shunt tube 504 and the upper annular shell 502, so that the heat of the solution near the stirring plate 4 is quickly dissipated, ensuring that the temperature of the solution remains in a stable range during the reaction process, thereby inhibiting the generation of by-products. Then the stirring plate 4 slowly rotates and resets, and the sliding rod 403 gradually drives the sliding bent plate 601 to move and reset, the through hole on the sliding bent plate 601 is misaligned with the fixed tube 501, and the coolant in the shunt tube 504 stops flowing. In the subsequent chlorine injection process, the above-mentioned stirring plate 4 inclination angle change and temperature reduction operations are repeated until the solution reaction is completed, and the solution and bromine are taken out of the reaction tank 1, and all parts are in the initial position.

[0033] Example 2: Based on Example 1, please refer to the attached Figure 1 , Attachment Figure 2 , Attachment Fig.10 and attached Fig.11 As shown, it also includes: a gas delivery mechanism, which is arranged at the upper part of the reaction tank 1 and is used to make the chlorine gas in the upper part of the reaction tank 1 react with the solution again, and the gas delivery mechanism includes: a first ring 701, which is slidably connected to the upper part of the rotating shaft 2, and the rotating shaft 2 is provided with a cavity and a through hole, and the cavity of the rotating shaft 2 is communicated with the reaction tank 1 through the through hole, and the stirring plate 4 is provided with an exhaust hole, and the exhaust hole of the stirring plate 4 is communicated with the cavity of the rotating shaft 2; a second ring 702, which is slidably connected to the upper part of the reaction tank 1, and a second spring is fixedly connected between the second ring 702 and the reaction tank 1, and the first ring 701 is used to squeeze and push the second ring 702, so that the gas in the upper part of the reaction tank 1 enters the cavity of the rotating shaft 2, and the first ring 701 is provided with a pull rope 703; a continuous motion component, set It is placed on the upper part of the reaction tank 1 and is used to control the pull rope 703 to drive the first ring 701 to move back and forth up and down. The exhaust hole of the stirring plate 4 is always tilted upward to prevent the secondary injected chlorine from gathering and generating large bubbles. The continuous motion component includes: an electric push rod 801, which is fixed to the upper part of the reaction tank 1. The telescopic end of the electric push rod 801 is slidably sealed with the reaction tank 1. The part of the telescopic end of the electric push rod 801 located in the reaction tank 1 is provided with a rectangular shell 802; a limit slider 803, which is slidably connected in the rectangular shell 802, the limit slider 803 is connected to the pull rope 703, and a fixed lever 804 is fixed on the rotating shaft 2. The fixed lever 804 is used to intermittently push the limit slider 803 to move, so that the pull rope 703 intermittently pulls the first ring 701 upward.

[0034] In the above scheme, the problem that the chlorine gas that has not reacted with the solution will gradually accumulate in the upper part of the reaction tank 1, and the precipitated bromine will isolate the solution from the unreacted chlorine gas, so that the pressure in the reaction tank 1 will continue to increase, resulting in a large amount of chlorine gas being wasted, and the production cost will be increased is solved; a pressure sensor (an existing mechanism, not shown in the figure, used to monitor the air pressure in the reaction tank 1) is arranged in the upper part of the reaction tank 1, and the rectangular shell 802 guides the pull rope 703, so that the limit slider 803 drives the pull rope 703 to move by moving to increase the distance, thereby increasing the distance that the first ring 701 moves upward in a single time, Initially, the range of movement of the fixed lever 804 does not contact the limit slider 803, and the limit slider 803 only contacts and squeezes the fixed lever 804, the first ring 701 and the second ring 702 are in a misaligned state, the first ring 701 is located below the second ring 702, so that the unreacted chlorine gas moves to the top of the second ring 702, the first ring 701 is always located above the surface of the solution, and the second ring 702 is driven by the first ring 701 to move synchronously, so that the chlorine gas on the upper part of the reaction tank 1 is re-injected into the solution, the unreacted chlorine gas is reused, and the use cost of chlorine gas is reduced.

[0035] Working process: When the pressure sensor at the upper part of the reaction tank 1 detects that the pressure nearby reaches the set value (as the solution continues to react, the chlorine in the air above the solution continues to increase, and the chlorine concentration reaches a certain minimum value that can be re-injected into the solution for secondary reaction), the control panel starts the electric push rod 801, and the telescopic end of the electric push rod 801 extends and drives the rectangular shell 802 close to the rotating shaft 2. As the rotating shaft 2 drives the fixed lever 804 to rotate, the fixed lever 804 contacts and pushes the limit slider 803 to move backward. The limit slider 803 pulls the first ring 701 upward through the pull rope 703, and the first ring 701 drives the second ring 702 to move synchronously and inject the gas at the upper part of the reaction tank 1. The second ring 701 and the second ring 702 are inserted into the cavity of the rotating shaft 2, and the second ring 702 compresses the second spring connected thereto. The chlorine-containing gas is re-injected into the solution through the stirring plate 4 to react with the solution for a secondary time. As the fixed lever 804 rotates, the fixed lever 804 loses contact with the limit slider 803. Under the elastic force of the second spring connected thereto, the second ring 702 drives the limit slider 803 to move forward and reset through the pull rope 703. The first ring 701 and the second ring 702 move downward and reset. After the limit slider 803 moves back and forth several times, the control panel controls the telescopic end of the electric push rod 801 to retract, and the limit slider 803 loses contact with the fixed lever 804. At this point, all parts in the device return to their initial positions.

[0036] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An oxidation reactor for bromine recovery, characterized in that: include: A reaction tank (1), wherein a rotating shaft (2) is rotatably connected inside the reaction tank (1), a disc-shaped cooling pipe is wound around the outside of the reaction tank (1), a motor (3) is fixedly connected to the reaction tank (1), an output shaft of the motor (3) is fixedly connected to the rotating shaft (2), and a plurality of stirring plates (4) are rotatably connected to the lower part of the rotating shaft (2); A gas injection component (5) is arranged at the lower part of the reaction tank (1), and a plurality of gas injection holes are provided on the gas injection component (5); A fixed shell (6) is fixedly connected to the upper part of the reaction tank (1), a sliding column (7) is slidably connected inside the fixed shell (6), and a floating ball is arranged at the lower end of the sliding column (7); A fixed frame (8) is fixedly connected to the lower part of the reaction tank (1), the gas injection member (5) penetrates the fixed frame (8), a sliding plate (9) is slidably connected inside the fixed frame (8), the sliding plate (9) is provided with a through hole, and the through hole of the sliding plate (9) is used to change the flow area of ​​chlorine gas in the gas injection member (5); A detection mechanism, arranged at the upper part of the reaction tank (1), for monitoring the movement of the sliding column (7); A deflection mechanism is arranged in the rotating shaft (2) and is used to change the inclination angle of all the stirring plates (4).

2. An oxidation reactor for bromine recovery according to claim 1, characterized in that: The projection range of the multiple gas injection holes on the gas injection member (5) on the horizontal plane is located within the projection range of the stirring range of the multiple stirring plates (4) on the horizontal plane, so as to increase the retention time of the chlorine gas bubbles in the solution.

3. An oxidation reactor for bromine recovery according to claim 1, characterized in that: The detection mechanism includes: A plurality of elastic telescopic rods (201) are all fixedly connected to the upper part of the reaction tank (1); the telescopic ends of the elastic telescopic rods (201) are slidably sealed with the reaction tank (1); and hydraulic oil is filled in the elastic telescopic rods (201); A plurality of sliding blocks (202), the number of which is the same as the number of the elastic telescopic rods (201), are all slidably connected in the fixed shell (6), the sliding blocks (202) are provided with inclined surfaces, the fixed shell (6) is slidably connected with a plurality of limit blocks (203), a first spring is fixedly connected between the limit blocks (203) and the fixed shell (6), the telescopic ends of the elastic telescopic rods (201) are provided with blind holes, and the limit blocks (203) are connected to the adjacent elastic telescopic rods (201) through the blind holes. 1), the limit block (203) is provided with an inclined surface, the sliding column (7) is connected to a rotating block (205) for limiting rotation, the rotating block (205) releases the limit of the telescopic end of the adjacent elastic telescopic rod (201) through the inclined surface of the sliding block (202) and the inclined surface of the limit block (203), the fixed block (204) is fixedly connected to the rotating shaft (2), and the fixed block (204) is used to push the telescopic end of the elastic telescopic rod (201) to retract; A control component is arranged at the lower part of the reaction tank (1) and is used to control the area of ​​the through hole on the sliding plate (9) communicating with the gas injection member (5).

4. An oxidation reactor for bromine recovery according to claim 3, characterized in that: The control component comprises: A fixed telescopic rod (301) is fixedly connected to the lower part of the reaction tank (1), and the telescopic end of the fixed telescopic rod (301) is used to push the sliding plate (9) to move; The liquid guiding tube (302) is connected to the fixed telescopic rod (301), the plurality of elastic telescopic rods (201) are all connected to the liquid guiding tube (302), and hydraulic oil is filled in the fixed telescopic rod (301) and the liquid guiding tube (302).

5. An oxidation reactor for bromine recovery according to claim 4, characterized in that: The deflection mechanism comprises: A rotating column (401) is slidably connected to the rotating shaft (2), a cavity is provided in the rotating column (401), a fixed cylinder (402) is rotatably connected to the lower end of the rotating shaft (2), a sliding rod (403) is slidably and rotatably connected to the fixed cylinder (402), and the sliding rod (403) is used to push the rotating column (401) to move; A connecting pipe (404) is connected to the lower part of the fixed cylinder (402), the connecting pipe (404) is connected to the elastic telescopic rod (201) at the lowermost side, and hydraulic oil is filled in the fixed cylinder (402) and the connecting pipe (404); a plurality of racks (405), the number of which is the same as the number of the stirring plates (4), and all of which are arranged on the rotating column (401); the racks (405) and adjacent stirring plates (4) are driven by gears; An auxiliary cooling assembly, arranged at the lower part of the reaction tank (1), and used to allow the coolant in the disc-shaped cooling tube to flow through all the stirring plates (4); A flow guide component is arranged at the lower part of the reaction tank (1) and is used to control the time for the coolant to flow in the gas injection component (5).

6. An oxidation reactor for bromine recovery according to claim 5, characterized in that: The auxiliary cooling assembly comprises: A fixed pipe (501) is fixedly connected to the lower part of the reaction tank (1), and one end of the fixed pipe (501) is connected to the disc-shaped cooling pipe outside the reaction tank (1); Two annular shells (502) are arranged on the rotating shaft (2), the lower annular shell (502) is connected to the cavity in the rotating column (401) through a pipeline, the annular shell (502) is rotatably connected to an annular plate (503), and the chamber formed by the lower annular shell (502) and the annular plate (503) is connected to the fixed pipe (501); A diverter pipe (504) is arranged in all the stirring plates (4), the diverter pipe (504) is connected to the cavity in the rotating column (401), and the diverter pipe (504) is connected to the disc-shaped cooling pipe on the outside of the reaction tank (1) through the upper annular shell (502) and the annular plate (503).

7. An oxidation reactor for bromine recovery according to claim 6, characterized in that: The flow guide assembly comprises: A sliding bent plate (601) is slidably connected to the lower part of the reaction tank (1), the sliding bent plate (601) is provided with a through hole, the through hole of the sliding bent plate (601) is used to control the connection state of the fixed tube (501), and an annular groove is provided on one side of the sliding bent plate (601); The fixed rod (602) is fixedly connected to the sliding rod (403), and the fixed rod (602) slides in the annular groove of the sliding curved plate (601), so that the sliding curved plate (601) and the sliding rod (403) move synchronously.

8. An oxidation reactor for bromine recovery according to claim 7, characterized in that: Also includes: A gas delivery mechanism is arranged at the upper part of the reaction tank (1) and is used to allow the chlorine gas in the upper part of the reaction tank (1) to react with the solution again. The gas delivery mechanism comprises: A first ring (701) is slidably connected to the upper part of the rotating shaft (2); a cavity and a through hole are provided in the rotating shaft (2); the cavity of the rotating shaft (2) is communicated with the interior of the reaction tank (1) through the through hole; the stirring plate (4) is provided with an exhaust hole; the exhaust hole of the stirring plate (4) is communicated with the cavity of the rotating shaft (2); a second circular ring (702) slidably connected to the upper part of the reaction tank (1); a second spring is fixedly connected between the second circular ring (702) and the reaction tank (1); the first circular ring (701) is used to squeeze and push the second circular ring (702) so that the gas in the upper part of the reaction tank (1) enters the cavity of the rotating shaft (2); the first circular ring (701) is provided with a pull rope (703); A continuous motion component is arranged on the upper part of the reaction tank (1) and is used to control the pull rope (703) to drive the first ring (701) to move reciprocatingly up and down.

9. An oxidation reactor for bromine recovery according to claim 8, characterized in that: The exhaust holes of the stirring plate (4) are always tilted upwards, so as to prevent the secondary injected chlorine gas from agglomerating to generate large bubbles.

10. An oxidation reactor for bromine recovery according to claim 9, characterized in that: The continuous motion assembly comprises: An electric push rod (801) is fixedly connected to the upper part of the reaction tank (1), the telescopic end of the electric push rod (801) is slidably sealed with the reaction tank (1), and the part of the telescopic end of the electric push rod (801) located inside the reaction tank (1) is provided with a rectangular shell (802); A limit slider (803) is slidably connected in the rectangular shell (802), the limit slider (803) is connected to the pull rope (703), a fixed lever (804) is fixedly connected to the rotating shaft (2), and the fixed lever (804) is used to intermittently move the limit slider (803) so that the pull rope (703) intermittently pulls the first ring (701) upward.

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