Magnesium sulfate catalytic oxidation reactor and method

Abstract

The invention relates to the technical field of catalytic oxidation reactors, and discloses a magnesium sulfate catalytic oxidation reactor and method.The magnesium sulfate catalytic oxidation reactor comprises a support, and a reactor tank is mounted on the support; the catalyst adding unit comprises a catalyst bin arranged in the reactor tank body, a grinding disc is mounted in the catalyst bin, and a grinding core is arranged in the grinding disc; the catalyst dispersing unit comprises a dispersing disc arranged at the bottom of the catalyst bin, and a plurality of groups of dispersing pipes are annularly mounted at one end, far away from the catalyst bin, of the dispersing disc. The grinding disc and the grinding core are driven by the connecting shaft to finely grind the catalyst, so that the specific surface area of the catalyst is remarkably increased, active sites are fully exposed, the activity of the catalyst is fully exerted, and the reaction efficiency is remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of catalytic oxidation reactors, and more specifically, to a magnesium sulfate catalytic oxidation reactor and method. Background Art

[0002] In the production of magnesium sulfate, the catalytic oxidation reaction of magnesium sulfite is a key process step. In the chemical industry, magnesium sulfate, as an important inorganic chemical product, is widely used in industries such as fertilizers, pharmaceuticals, and dyeing. Currently, the industrial method for preparing magnesium sulfate is often the catalytic oxidation method of magnesium sulfite.

[0003] In the industrial production process of the magnesium sulfate catalytic oxidation reaction, the use of a catalyst is one of the core factors determining the reaction efficiency and product quality. From the perspective of the characteristics of the catalyst itself, the catalyst without grinding treatment exists in the form of larger particles, and its specific surface area is relatively small. According to surface chemistry theory, the catalytic activity of a catalyst mainly depends on its surface active sites. Insufficient specific surface area means that the number of exposed active sites is limited. When directly putting such unrefined catalysts into the magnesium sulfite solution, the actual contact area between the catalyst and the solution is greatly limited, resulting in a large number of catalysts being unable to fully exert their catalytic effects, making the oxidation reaction rate of magnesium sulfite slow, the reaction cycle prolonged, and the production efficiency significantly reduced.

[0004] In addition, existing reactors usually adopt a combination of simple stirring and bottom aeration, which is difficult to achieve full mixing of the magnesium sulfite solution and uniform distribution of oxygen. Due to poor stirring effect, local concentration differences are likely to occur in the solution, resulting in inconsistent reaction rates and incomplete reactions in some areas, not only prolonging the reaction time but also reducing the overall reaction efficiency. At the same time, the single bottom aeration method makes oxygen mainly concentrated in the lower part of the solution, with insufficient oxygen supply in the upper part, limited gas-liquid contact area, and unable to provide sufficient oxygen for the magnesium sulfite oxidation reaction, thus affecting the yield of magnesium sulfate. Summary of the Invention

[0005] The present invention provides a magnesium sulfate catalytic oxidation reactor and method, which solve the technical problem that in the related art, the actual contact area between the catalyst and the solution is greatly limited, resulting in a large number of catalysts being unable to fully exert their catalytic effects, making the oxidation reaction rate of magnesium sulfite slow, the reaction cycle prolonged, and the production efficiency significantly reduced.

[0006] On one hand, the present invention discloses a magnesium sulfate catalytic oxidation reactor, comprising a bracket, a reactor tank body is installed on the bracket, a motor is installed on the reactor tank body, a connecting shaft is installed on the output shaft of the motor, and a feed pipe is also installed on the reactor tank body; a catalyst adding unit, the catalyst adding unit comprises a catalyst bin arranged inside the reactor tank body, a grinding disc is installed inside the catalyst bin, and a grinding core is arranged inside the grinding disc; a catalyst dispersing unit, the catalyst dispersing unit comprises a dispersing disc arranged at the bottom of the catalyst bin, and a plurality of groups of dispersing pipes are annularly installed at one end of the dispersing disc away from the catalyst bin, and the interior of the dispersing disc is connected with the dispersing pipes.

[0007] As a further optimization scheme of the present invention, a first sleeve is installed on the grinding core, the first sleeve is slidably connected to the outside of the connecting shaft, and multiple groups of spline blocks are slidably connected to the inside of the first sleeve, and the connecting shaft and the spline blocks are fixedly connected.

[0008] As a further optimization scheme of the present invention, a first feed pipe is installed on the catalyst bin, and a second feed pipe is slidably connected inside the first feed pipe, and the second feed pipe passes through the reactor tank body and extends to the upper surface of the reactor tank body.

[0009] As a further optimization solution of the present invention, a dispersion diaphragm is provided at one end of the second feed pipe close to the catalyst bin, and a plurality of connecting rods are installed between the dispersion diaphragm and the second feed pipe.

[0010] As a further optimization scheme of the present invention, a first annular groove is formed at one end of the dispersion disk close to the catalyst bin, and a first annular slider is slidably connected inside the first annular groove, and the first annular slider is fixedly connected to the catalyst bin.

[0011] As a further optimization scheme of the present invention, a first gear is installed on the dispersion disk, and a second gear is meshingly connected to the first gear, a second sleeve is installed on the second gear, a spline shaft is slidably connected inside the second sleeve, and a rotating shaft is installed on the spline shaft, and the output shaft of the motor is connected to the rotating shaft through a pulley transmission mechanism.

[0012] As a further optimization solution of the present invention, an aeration plate is arranged inside the reactor tank, a transmission pipe is installed on the aeration plate, and a pneumatic processing unit is arranged on the dispersion plate.

[0013] As a further optimized solution of the present invention, the pneumatic treatment unit includes a gas supply disk arranged outside the dispersion disk and a second annular sliding groove opened on the dispersion disk. A second annular sliding block is slidably connected in the second annular sliding groove, and the second annular sliding block is fixedly connected to the gas supply disk. A gas supply pipe is installed on the gas supply disk. The transfer pipe and the gas supply pipe are connected and communicated through a connecting pipe. A plurality of groups of air ports are annularly opened on the dispersion disk, and the air ports are connected and communicated with the inside of the gas supply disk.

[0014] As a further optimized solution of the present invention, a connecting frame is installed on the catalyst bin, and an electric push rod is installed on the reactor tank body. The telescopic end of the electric push rod passes through the reactor tank body and is fixedly connected to the connecting frame.

[0015] On the other hand, the present invention discloses a method for catalytic oxidation reaction of magnesium sulfate, which includes the following steps: S1. Feed the magnesium sulfite solution into the reactor tank body through the feed pipe, and at the same time, add the catalyst into the catalyst bin through the first feed pipe and the second feed pipe; S2. Cooperate the grinding core with the grinding disk to grind the catalyst in the catalyst bin to refine the catalyst particles; S3. The ground catalyst falls to the bottom of the catalyst bin and rotates through the dispersion pipe. The catalyst is thrown out through the dispersion pipe by centrifugal force and evenly dispersed into the solution in the reactor tank body; S4. The electric push rod drives the connecting frame to drive the catalyst bin to move up and down. When the catalyst bin moves down, the dispersion pipe enters the solution to form an up-and-down synchronous aeration mode with the aeration disk; S5. When the gas is discharged through the dispersion pipe, it impacts the impeller to make it rotate, and the shearing force and impact force generated by the blades are used to secondarily disperse and crush the residual catalyst powder in the dispersion pipe.

[0016] The beneficial effects of the present invention are as follows: The present invention finely grinds the catalyst through the cooperation of the grinding disk and the grinding core driven by the connecting shaft, significantly increasing the specific surface area of the catalyst and fully exposing the active sites; and through the dispersion disk and the dispersion pipe, the ground catalyst is evenly distributed in the solution by centrifugal force, ensuring the uniform distribution of the catalyst in the reactor, enabling the catalyst activity to be fully exerted, and significantly improving the reaction efficiency. In addition, the aeration disk and the dispersion pipe form an up-and-down synchronous aeration mode, injecting oxygen into the solution in the form of tiny bubbles from the upper and lower ends of the reactor, effectively reducing the reaction dead angle and incomplete reaction phenomenon, thereby significantly improving the yield and quality of magnesium sulfate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional structural schematic diagram of the present invention; Figure 2 is a three-dimensional sectional structural schematic diagram inside the reactor tank body of the present invention; Figure 3 is a partial three-dimensional structure diagram of the present invention; Figure 4 is a partial three-dimensional structure diagram of the catalyst addition unit, catalyst dispersion unit and pneumatic treatment unit of the present invention; Figure 5 is the Figure 4 structural cross-sectional view in; Figure 6 is the Figure 4 three-dimensional structural cross-sectional view in; Figure 7 is the Figure 6 enlarged view of the structure at position A in; Figure 8 is the Figure 6 enlarged view of the structure at position B in; Figure 9 is a schematic diagram of the internal structure of the dispersion tube of the present invention.

[0018] In the figure: 1, bracket; 2, reactor tank body; 3, motor; 4, connecting shaft; 5, stirring blade; 6, aeration disc; 7, transmission pipe; 8, catalyst bin; 9, grinding disc; 10, grinding core; 11, first shaft sleeve; 12, spline block; 13, first feed pipe; 14, second feed pipe; 15, dispersion diaphragm; 16, connecting rod; 17, dispersion disc; 18, dispersion tube; 19, first annular slider; 20, connecting frame; 21, electric push rod; 22, first gear; 23, second gear; 24, second shaft sleeve; 25, fixing frame; 26, spline shaft; 27, rotating shaft; 28, pulley drive mechanism; 29, air supply disc; 30, second annular slider; 31, air supply pipe; 32, connecting pipe; 33, air port; 34, impeller. Detailed implementation manners

[0019] Now, the subject matter described herein will be discussed with reference to exemplary embodiments. It should be understood that discussing these embodiments is only to enable those skilled in the art to better understand and thus implement the subject matter described herein. Without departing from the scope of protection of the content of this specification, changes can be made to the functions and arrangements of the elements discussed. Each example can omit, substitute or add various processes or components as needed. Additionally, the features described relative to some examples can also be combined in other examples.

[0020] Example 1: According to Figure 1 , Figure 2 and Figure 3As shown in the figure, a magnesium sulfate catalytic oxidation reactor includes a bracket 1, on which a reactor tank 2 is installed. A motor 3 is installed on the reactor tank 2, and a connecting shaft 4 is installed on the output shaft of the motor 3. The connecting shaft 4 is connected to the inside of the reactor tank 2 by bearings. A plurality of stirring blades 5 are installed on the connecting shaft 4, and an aeration disc 6 is arranged below the bottom group of stirring blades 5.

[0021] Specifically, a transmission pipe 7 is installed on the aeration disc 6, and the transmission pipe 7 passes through the reactor tank 2 and extends to the outer surface of the reactor tank 2. Among them, the transmission pipe 7 is used to connect an external air supply device, and by driving the air supply device to work, the aeration disc 6 aerates the solution inside the reactor tank 2. In addition, a feed pipe for the entry of magnesium sulfite solution is also installed on the reactor tank 2 to oxidize magnesium sulfite into magnesium sulfate.

[0022] During operation, the motor 3 drives the connecting shaft 4 to rotate, and the plurality of stirring blades 5 on the connecting shaft 4 rotate accordingly. The stirring blades 5 rotate inside the reactor tank 2, which can make the magnesium sulfite solution inside the reactor tank 2 flow, playing a role in stirring and mixing, making the components in the solution more evenly distributed, avoiding the situation of too high or too low local concentration, and improving the uniformity and efficiency of the reaction; at the same time, the external air supply device supplies air to the aeration disc 6 through the transmission pipe 7, and the aeration disc 6 disperses the gas into tiny bubbles and releases them into the solution in the reactor tank 2.

[0023] It should be understood that the bubbles provide a source of oxygen, and the oxygen comes into full contact with the magnesium sulfite solution and oxidizes magnesium sulfite into magnesium sulfate under certain conditions. Moreover, the stirring action of the stirring blades 5 makes the solution flow, further promoting the contact and mixing of oxygen and magnesium sulfite, and accelerating the progress of the oxidation reaction.

[0024] In an embodiment, according to Figures 4 to 7 As shown in the figure, a catalyst addition unit is arranged inside the reactor tank 2. The catalyst addition unit includes a catalyst bin 8 arranged inside the reactor tank 2. A grinding disc 9 is installed inside the catalyst bin 8, a grinding core 10 is arranged inside the grinding disc 9, a first bushing 11 is installed on the grinding core 10, the first bushing 11 is slidably connected to the outside of the connecting shaft 4, and a plurality of spline blocks 12 are also slidably connected inside the first bushing 11. The connecting shaft 4 and the spline blocks 12 are fixedly connected. Among them, the catalyst is ground by the grinding disc 9 and the grinding core 10 to refine the catalyst particles and increase its contact area with the magnesium sulfite solution, thereby improving the activity and catalytic efficiency of the catalyst, accelerating the reaction rate of oxidizing magnesium sulfite into magnesium sulfate, and enhancing the overall reaction efficiency.

[0025] Specifically, a first feed pipe 13 is installed on the catalyst bin 8, and a second feed pipe 14 is slidably connected inside the first feed pipe 13. The second feed pipe 14 passes through the reactor tank body 2 and extends to the upper surface of the reactor tank body 2, and the second feed pipe 14 is fixedly connected to the reactor tank body 2. During use, the second feed pipe 14 is connected to an external feeding device.

[0026] Furthermore, a dispersion diaphragm 15 is provided at one end of the second feed pipe 14 close to the catalyst bin 8, and multiple groups of connecting rods 16 are installed between the dispersion diaphragm 15 and the second feed pipe 14.

[0027] It should be understood that the catalyst can be accurately added into the catalyst bin 8 through the first feed pipe 13 and the second feed pipe 14. And the arrangement of the dispersion diaphragm 15 and the connecting rods 16 ensures that the catalyst is fully dispersed when entering the catalyst bin 8, avoiding catalyst agglomeration.

[0028] During operation, the catalyst enters the catalyst bin 8 through the first feed pipe 13 and the second feed pipe 14. During the addition process, the dispersion diaphragm 15, supported by the connecting rods 16, plays a preliminary dispersion role on the entering catalyst. And, the connecting shaft 4 rotates driven by the motor 3. Through the transmission of multiple groups of spline blocks 12, the first sleeve 11 can rotate with the connecting shaft 4. The first sleeve 11 drives the grinding core 10 to rotate. The grinding core 10 cooperates with the grinding disc 9 to grind the catalyst in the catalyst bin 8, refine the catalyst particles, increase the specific surface area of the catalyst, and improve the catalytic activity.

[0029] In one embodiment, according to Figures 4 to 6 As shown, a catalyst dispersion unit is provided at the bottom of the catalyst bin 8. Through this catalyst dispersion unit, the uniform distribution of the catalyst in the solution is ensured, avoiding the problem of inconsistent reaction rates caused by uneven local concentration of the catalyst, creating better reaction conditions for the catalytic oxidation reaction of magnesium sulfite, and helping to improve the yield and product quality of magnesium sulfate. The catalyst dispersion unit includes a dispersion disc 17 provided at the bottom of the catalyst bin 8, and multiple groups of dispersion pipes 18 are annularly installed at one end of the dispersion disc 17 away from the catalyst bin 8. The inside of the dispersion disc 17 is communicated with the dispersion pipes 18. Among them, the combined structure of the dispersion disc 17 and the dispersion pipes 18 can quickly and evenly disperse the catalyst into the solution by means of centrifugal force.

[0030] Specifically, a first annular sliding groove is opened at one end of the dispersion disc 17 close to the catalyst bin 8, and a first annular sliding block 19 is slidably connected inside the first annular sliding groove. The first annular sliding block 19 is fixedly connected to the catalyst bin 8.

[0031] It should be explained in detail that, in the catalyst bin 8, after the ground catalyst falls to the bottom, the dispersion disc 17 forms a sliding connection structure with the first annular groove at the bottom of the catalyst bin 8 through the first annular slider 19, so that the dispersion disc 17 can rotate flexibly.

[0032] When the dispersion disk 17 rotates, it drives the multiple groups of dispersion tubes 18 connected to it to rotate together, and the catalyst enters the dispersion disk 17 from the bottom of the catalyst bin 8. Since the dispersion disk 17 is connected to the dispersion tubes 18, during the rotation of the dispersion disk 17 and the dispersion tubes 18, the catalyst is thrown out through the dispersion tubes 18 by centrifugal force and evenly dispersed into the solution of the reactor tank 2, thereby achieving further dispersion of the catalyst.

[0033] In yet another embodiment, according to Figure 4 and Figure 5 As shown, a first gear 22 is installed on the dispersion disk 17, and a second gear 23 is meshedly connected to the first gear 22, a second sleeve 24 is installed on the second gear 23, a spline shaft 26 is slidably connected inside the second sleeve 24, and a rotating shaft 27 is installed on the spline shaft 26, the rotating shaft 27 passes through the reactor tank body 2 and is connected to the bearing of the reactor tank body 2, and the output shaft of the motor 3 and the rotating shaft 27 are connected through a pulley transmission mechanism 28.

[0034] The second sleeve 24 and the outer part of the dispersion disc 17 are rotatably connected to a fixing frame 25 through a bearing. In this embodiment, the fixing frame 25 allows the second sleeve 24 and the dispersion disc 17 to rotate freely, and limits their radial and axial displacements, thereby ensuring the stability and accuracy of the gear transmission.

[0035] It should be noted that the output shaft of the motor 3 drives the rotating shaft 27 to rotate through the pulley transmission mechanism 28. The spline shaft 26 on the rotating shaft 27 is connected to the second sleeve 24 through a spline sliding connection, so that the second sleeve 24 can rotate synchronously with the rotating shaft 27. The second gear 23 on the second sleeve 24 is engaged with the first gear 22, thereby driving the dispersion disk 17 to rotate.

[0036] In yet another embodiment, according to Figures 4 to 6 ,as well as Figure 8 As shown, a pneumatic processing unit is provided on the dispersion disk 17, and the pneumatic processing unit includes an air supply disk 29 arranged outside the dispersion disk 17 and a second annular groove opened on the dispersion disk 17, a second annular slider 30 is slidably connected in the second annular groove, and the second annular slider 30 is fixedly connected to the air supply disk 29, and an air supply pipe 31 is installed on the air supply disk 29, the air supply pipe 31 is a hose, and the air supply pipe 31 passes through the reactor tank body 2 and extends to the outer surface of the reactor tank body 2.

[0037] The dispersion disk 17 has a plurality of gas ports 33 formed in an annular shape, and the gas ports 33 are connected to the interior of the gas supply disk 29 .

[0038] Specifically, the transmission pipe 7 and the gas supply pipe 31 are connected via a connecting pipe 32. An electrically controlled valve may be installed on the connecting pipe 32 to control the gas of the aeration and gas supply device so that the gas can enter or cannot enter the interior of the gas supply pipe 31.

[0039] When the electric control valve on the connecting pipe 32 is opened, the gas enters the gas supply pipe 31 from the transmission pipe 7 through the connecting pipe 32, and then flows into the gas supply disk 29. During the rotation of the dispersion disk 17, the gas supply disk 29 can maintain a relatively stable position. After the gas accumulates in the gas supply disk 29, it is evenly sprayed into the dispersion disk 17 through the multiple groups of gas ports 33 distributed in an annular manner on the dispersion disk 17, and then discharged outwardly through the dispersion pipe 18, thereby realizing the aeration function.

[0040] In yet another embodiment, according to Figure 2 and Figure 3 As shown, a connecting frame 20 is installed on the catalyst bin 8 , an electric push rod 21 is installed on the reactor tank body 2 , and the telescopic end of the electric push rod 21 passes through the reactor tank body 2 and is fixedly connected to the connecting frame 20 .

[0041] Specifically, after the electric push rod 21 is powered on, its telescopic end can perform telescopic movement in the channel reserved on the reactor tank body 2. When the electric push rod 21 is telescopic, it can drive the connecting frame 20, and then push or pull the catalyst bin 8 to move up and down in the reactor tank body 2.

[0042] Furthermore, the connecting frame 20 is driven by the electric push rod 21 to move up and down. When the catalyst bin 8 moves downward, the dispersion pipe 18 on the dispersion plate 17 enters the magnesium sulfite solution. At this time, the dispersion pipe 18 discharges gas for aeration, and works simultaneously with the aeration plate 6 located at the bottom of the reactor tank body 2, forming an upper and lower synchronous aeration mode in which the solution is aerated simultaneously from the top and bottom.

[0043] In the upper and lower synchronous aeration mode, the aeration plate 6 releases bubbles from the bottom, and the dispersion pipe 18 discharges gas from the upper part of the solution, so that oxygen can be more evenly and fully distributed in the magnesium sulfite solution, greatly increasing the contact area and contact time between oxygen and magnesium sulfite, significantly improving the oxidation reaction rate and efficiency, and promoting a more thorough conversion of magnesium sulfite into magnesium sulfate.

[0044] In addition, the intake air volume and aeration time of the pneumatic treatment unit can be precisely controlled through the electric control valve. In cooperation with the electric push rod 21 to lower the position of the catalyst bin 8, the aeration mode and the catalyst addition position can be dynamically adjusted according to the reaction process. In the initial stage of the reaction, the upper aeration intensity can be reduced, and mainly rely on the bottom aeration disk 6 for aeration; in the middle and late stages of the reaction, the upper aeration is turned on and the position of the catalyst bin 8 is lowered to optimize the reaction conditions and ensure that the reaction is always in the best state.

[0045] It should be noted that when driving the catalyst bin 8 to move downward, the dispersion diaphragm 15 seals the interiors of the first feed pipe 13 and the second feed pipe 14, so that a seal is formed inside the catalyst bin 8, and the gas can only be discharged from the dispersion pipe 18.

[0046] In another embodiment, according to Figure 9 As shown, an impeller 34 is provided at one end of the dispersion pipe 18 away from the dispersion disk 17, and a mounting frame is connected to the impeller 34 by a bearing, and the mounting frame is installed on the dispersion pipe 18.

[0047] It should be noted that when the gas is discharged through the dispersion pipe 18, the high-speed airflow impacts the blades of the impeller 34, pushing the impeller 34 to rotate around its bearing connection point with the mounting frame. Since the impeller 34 is located at the outlet end of the dispersion pipe 18, its rotation will agitate the surrounding solution, further breaking and refining the bubbles discharged from the dispersion pipe 18, and accelerating the diffusion of the bubbles in the solution.

[0048] At the same time, the rotation of the impeller 34 will also drive the surrounding solution to form a local eddy current, enhancing the mixing effect of the solution and promoting the contact and reaction between oxygen, magnesium sulfite and the catalyst.

[0049] In addition, the rotating blades of the impeller 34 will generate a strong shearing force and impact force on the solution, which can secondary disperse and break the residual powder inside the dispersion pipe 18, so that the catalyst is distributed in the solution in a finer and more uniform state.

[0050] Embodiment 2: According to Figures 1 to 9 As shown, a method for catalytic oxidation of magnesium sulfate uses the magnesium sulfate catalytic oxidation reactor disclosed in Embodiment 1, and includes the following steps: S1. Feed the magnesium sulfite solution into the reactor tank body 2 through the feed pipe, and at the same time add the catalyst into the catalyst bin 8 through the first feed pipe 13 and the second feed pipe 14; S2. Cooperate the grinding core 10 with the grinding disk 9 to grind the catalyst in the catalyst bin 8 to refine the catalyst particles; S3. The ground catalyst falls to the bottom of the catalyst bin 8 and rotates through the dispersion pipe 18. The catalyst is thrown out through the dispersion pipe 18 by centrifugal force and evenly dispersed into the solution in the reactor tank body 2; S4. The electric push rod 21 drives the connecting frame 20 to drive the catalyst chamber 8 to move up and down. When the catalyst chamber 8 moves down, the dispersion tube 18 enters the solution, forming an up-and-down synchronous aeration mode with the aeration disc 6, promoting the full contact between magnesium sulfite and oxygen and the occurrence of an oxidation reaction to generate magnesium sulfate.

[0051] S5. When the gas is discharged through the dispersion tube 18, it impacts the impeller 34 to make it rotate. The shearing force and impact force generated by the blades are used to secondarily disperse and crush the residual catalyst powder in the dispersion tube 18, further improving the mass transfer efficiency and catalytic effect.

[0052] The above describes the embodiments of the specific implementation manner, but this embodiment is not limited to the above specific implementation manner. The above specific implementation manner is only illustrative, not restrictive. Under the inspiration of this embodiment, those of ordinary skill in the art can also make many forms, all of which fall within the protection scope of this embodiment.

Claims

1. A magnesium sulfate catalytic oxidation reactor, characterized in that, Comprising: A bracket (1), on which a reactor tank body (2) is installed, and a motor (3) is installed on the reactor tank body (2). A connecting shaft (4) is installed on the output shaft of the motor (3), and a feed pipe is also installed on the reactor tank body (2). A catalyst addition unit, which includes a catalyst bin (8) arranged inside the reactor tank body (2), and a grinding disc (9) is installed inside the catalyst bin (8), and a grinding core (10) is arranged inside the grinding disc (9). A catalyst dispersion unit, which includes a dispersion disc (17) arranged at the bottom of the catalyst bin (8), and a plurality of groups of dispersion pipes (18) are annularly installed at one end of the dispersion disc (17) away from the catalyst bin (8), and the inside of the dispersion disc (17) is communicated with the dispersion pipes (18). When the dispersion disc (17) rotates, it drives the plurality of groups of dispersion pipes (18) connected thereto to rotate together. The catalyst enters the inside of the dispersion disc (17) from the bottom of the catalyst bin (8). Since the dispersion disc (17) is communicated with the dispersion pipes (18), during the rotation of the dispersion disc (17) and the dispersion pipes (18), the catalyst is thrown out through the dispersion pipes (18) by using centrifugal force and evenly dispersed into the solution in the reactor tank body (2). One end of the dispersion pipe (18) away from the dispersion disc (17) is provided with an impeller (34), and a mounting frame is connected to the impeller (34) by a bearing, and the mounting frame is installed on the dispersion pipe (18). When the gas is discharged through the dispersion pipe (18), the high-speed air flow impacts the blades of the impeller (34), pushing the impeller (34) to rotate around its bearing connection point with the mounting frame, generating a stirring effect on the surrounding solution, and further breaking and refining the bubbles discharged from the dispersion pipe (18).

2. The magnesium sulfate catalytic oxidation reactor according to claim 1, wherein A first bushing (11) is installed on the grinding core (10), the first bushing (11) is slidably connected to the outside of the connecting shaft (4), and a plurality of groups of spline blocks (12) are also slidably connected to the inside of the first bushing (11), and the connecting shaft (4) is fixedly connected to the spline blocks (12).

3. A magnesium sulfate catalytic oxidation reactor according to claim 1, characterized in that, A first feed pipe (13) is installed on the catalyst bin (8), and a second feed pipe (14) is slidably connected to the inside of the first feed pipe (13), and the second feed pipe (14) passes through the reactor tank body (2) and extends to the upper surface of the reactor tank body (2).

4. The magnesium sulfate catalytic oxidation reactor according to claim 3, characterized in that One end of the second feed pipe (14) close to the catalyst bin (8) is provided with a dispersion diaphragm (15), and a plurality of groups of connecting rods (16) are installed between the dispersion diaphragm (15) and the second feed pipe (14).

5. A magnesium sulfate catalytic oxidation reactor according to claim 1, characterized in that, A first annular sliding groove is opened at one end of the dispersion disc (17) close to the catalyst bin (8), and a first annular sliding block (19) is slidably connected to the inside of the first annular sliding groove, and the first annular sliding block (19) is fixedly connected to the catalyst bin (8).

6. A magnesium sulfate catalytic oxidation reactor according to claim 5, characterized in that, A first gear (22) is installed on the dispersion disc (17), and a second gear (23) is meshed with the first gear (22). A second bushing (24) is installed on the second gear (23). A spline shaft (26) is slidably connected inside the second bushing (24), and a rotating shaft (27) is installed on the spline shaft (26). The output shaft of the motor (3) and the rotating shaft (27) are drivingly connected through a pulley transmission mechanism (28).

7. A magnesium sulfate catalytic oxidation reactor according to claim 1, characterized in that, An aeration disc (6) is arranged inside the reactor tank body (2). A transmission pipe (7) is installed on the aeration disc (6), and a pneumatic treatment unit is arranged on the dispersion disc (17).

8. A magnesium sulfate catalytic oxidation reactor according to claim 7, characterized in that, The pneumatic treatment unit includes a gas supply disc (29) arranged outside the dispersion disc (17) and a second annular sliding groove formed in the dispersion disc (17). A second annular sliding block (30) is slidably connected in the second annular sliding groove, and the second annular sliding block (30) is fixedly connected with the gas supply disc (29). A gas supply pipe (31) is installed on the gas supply disc (29). The transmission pipe (7) and the gas supply pipe (31) are communicated through a connecting pipe (32). A plurality of groups of air ports (33) are annularly formed in the dispersion disc (17), and the air ports (33) are communicated with the inside of the gas supply disc (29).

9. A magnesium sulfate catalytic oxidation reactor according to claim 8, characterized in that, A connecting frame (20) is installed on the catalyst bin (8). An electric push rod (21) is installed on the reactor tank body (2), and the telescopic end of the electric push rod (21) passes through the reactor tank body (2) and is fixedly connected with the connecting frame (20).

10. A method for catalytic oxidation reaction of magnesium sulfate, using a magnesium sulfate catalytic oxidation reactor as described in any one of claims 1-9, characterized in that, It includes the following steps: S1. Feed the magnesium sulfite solution into the reactor tank body (2) through the feed pipe. At the same time, add the catalyst into the catalyst bin (8) through the first feed pipe (13) and the second feed pipe (14). S2. Cooperate the grinding core (10) with the grinding disc (9) to grind the catalyst in the catalyst bin (8) to refine the catalyst particles. S3. The ground catalyst falls to the bottom of the catalyst bin (8) and rotates through the dispersion pipe (18). The catalyst is thrown out through the dispersion pipe (18) by centrifugal force and evenly dispersed into the solution in the reactor tank body (2). S4. Subsequently, the electric push rod (21) drives the connecting frame (20) to drive the catalyst bin (8) to move up and down. When the catalyst bin (8) moves down, the dispersion pipe (18) enters the solution to form an up-and-down synchronous aeration mode with the aeration disc (6). S5. When the gas is discharged through the dispersion pipe (18), it impacts the impeller (34) to make it rotate, and the shearing force and impact force generated by the blades are used to secondarily disperse and crush the residual catalyst powder in the dispersion pipe (18).

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