A two-stage refining device for removing sulfuric acid reduction products and a method for removing the same

Abstract

The present application relates to the technical field of sulfuric acid production, in particular to a two-stage refined sulfuric acid reduction device and removal method thereof, comprising a box; a support plate is fixedly connected to the bottom end of the outer wall of the box; a discharge pipe is fixedly connected to the bottom end of the outer wall of the box and communicates with the box; a feeding pipe is fixedly connected to the top end of the outer wall of the box and communicates with the box, and valves are arranged in the interiors of the feeding pipe and the discharge pipe; the motor drives the rotating shaft to rotate, the rotating shaft drives the stirring plate to rotate, the stirring plate stirs the sulfuric acid in the shell, the sulfuric acid fully contacts with oxygen, catalyst and washing liquid under the action of stirring, the oxidation reaction efficiency of the sulfuric acid is improved, the sulfuric acid can be uniformly mixed with oxygen or air and preliminary catalyst under the stirring force to react, and the situation that part of the sulfuric acid cannot fully contact with oxygen or air and preliminary catalyst is solved, and the quality does not meet the standard.

Description

Technical Field

[0001] This invention relates to the field of sulfuric acid production technology, specifically to a two-stage purification sulfuric acid reducing agent removal device and method. Background Technology

[0002] Sulfuric acid is an important chemical raw material. During its production, some reducing substances are generated, which affect the purity of sulfuric acid and thus its performance. Therefore, a two-stage sulfuric acid refining and reducing substance removal device is needed in the production process. Through advanced chemical reaction and separation technology, reducing substances in sulfuric acid are effectively removed, thereby improving the purity and quality of sulfuric acid.

[0003] In the existing technology, the two-stage purification process for sulfuric acid reducing agent removal requires the introduction of oxygen or air and a catalyst into the sulfuric acid to react and wash it. However, simply introducing oxygen or air and a catalyst into the sulfuric acid reduces the efficiency of the reaction and washing process, and may not allow the sulfuric acid to react fully. This is too time-consuming and may result in some sulfuric acid not coming into contact with oxygen or air and the catalyst for reaction and washing, causing some sulfuric acid to fail to meet the quality standards. Summary of the Invention

[0004] The purpose of this invention is to address the problems in the two-stage sulfuric acid refining process, which requires the introduction of oxygen or air and a catalyst into the sulfuric acid for reaction and washing. These problems include reduced efficiency, insufficient reaction time, and the possibility of some sulfuric acid failing to react with oxygen or air and the catalyst, resulting in substandard quality. Therefore, this invention proposes a two-stage sulfuric acid refining device and method for removing sulfuric acid refining.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] A two-stage purification sulfuric acid reducing agent removal device includes a housing; a support plate is fixedly connected to the bottom of the outer wall of the housing; a discharge pipe is fixedly connected to the bottom of the outer wall of the housing and communicates with the housing; a feed pipe is fixedly connected to the top of the outer wall of the housing and communicates with the housing, and valves are provided inside both the feed pipe and the discharge pipe; an oxygen pipe and a catalyst pipe are fixedly connected to the top of the outer wall of the housing, and the bottom ends of the outer walls of both the oxygen pipe and the catalyst pipe penetrate the top of the outer wall of the housing and are located inside the housing; a cross-section is fixedly connected to the top of the inner wall of the housing. The filter housing has a feed pipe located above it. A placement shell is rotatably connected to the bottom of the inner wall of the housing via a cylinder, and the placement shell is located below the filter housing. The oxygen pipe and catalyst pipe are located between the inner side wall of the placement shell and the outer side wall of the filter housing. A motor is fixedly connected to the top of the outer wall of the housing via a fixing block. The output end of the motor has a rotating shaft, and the bottom of the outer wall of the rotating shaft penetrates the top of the outer wall of the housing and the filter housing located inside the placement shell. A set of stirring plates is provided on the outer side wall of the rotating shaft located inside the placement shell via an annular plate.

[0007] In a preferred embodiment of the present invention, a first annular rack is fixedly connected to the top of the outer wall of the placement shell; a rotating rod is rotatably connected to the top of the outer wall of the box, and the bottom end of the outer wall of the rotating rod penetrates the top of the outer wall of the box; a first gear is fixedly connected to the bottom end of the outer wall of the rotating rod, and the first gear meshes with the first annular rack; a first sprocket is fixedly connected to the top of the outer wall of the rotating rod and the outer wall of the rotating shaft, and a pair of first sprockets are connected by a chain; a first spray pipe and a second spray pipe are fixedly connected to the outer wall of the box, and one end of the outer wall of both the first spray pipe and the second spray pipe penetrates the outer wall of the box and is located inside the box, and the first spray pipe and the second spray pipe are both located between the bottom end of the outer wall of the filter shell and the top end of the outer wall of the placement shell; the first spray pipe and the second spray pipe are L-shaped.

[0008] In a preferred embodiment of the present invention, an annular groove is formed at the top of the outer wall of the placement shell; a set of filter grooves is formed at the bottom of the outer wall of the placement shell, and all of the filter grooves are connected to the annular groove; a baffle is slidably connected to the inner wall of the annular groove, and the baffle matches the set of filter grooves; a tension plate is fixedly connected to the top of the outer wall of the baffle; a set of locking grooves is formed on one side of the outer wall of the tension plate; a first bolt is threadedly connected to the outer wall of the placement shell, and one end of the outer wall of the first bolt penetrates the outer wall of the placement shell and is located in the annular groove, and the first bolt matches the set of locking grooves; a heating device is provided at the bottom of the inner wall of the box; a cooling collection pipe is fixedly connected to the bottom of the outer wall of the box, and the cooling collection pipe is connected to the box; a closed through groove is formed on the outer wall of the box; a closing plate is hinged to the top of the inner wall of the closed through groove, and a torsion spring is provided at the junction of the closing plate and the closed through groove; a handle is fixedly connected to the outer wall of the closing plate.

[0009] In a preferred embodiment of the present invention, a first threaded rod is rotatably connected to the outer wall of the placement shell; a guide rod is fixedly connected to the bottom end of the outer wall of the placement shell; a square plate is bolted to the outer wall of the first threaded rod, and the square plate is slidably connected to the guide rod; a pressing plate is fixedly connected to one side of the outer wall of the square plate by a first spring, and the pressing plate is arc-shaped and matches the outer wall of the placement shell.

[0010] In a preferred embodiment of the present invention, one side of the outer wall of each of the stirring plates is fixedly connected to the outer wall of the annular plate; a square through groove is provided on one side of the outer wall of the stirring plate; a circular rod is rotatably connected to the bottom of the inner wall of the square through groove, and the top of the outer wall of the circular rod penetrates through the stirring plate; a set of corrosion-resistant bristles is provided on the outer wall of the circular rod; an annular gear is fixedly connected to the top of the outer wall of the circular rod; a second annular rack is slidably connected to the inner wall of the placement shell, and the second annular rack meshes with the annular gear; a linkage rod is fixedly connected to one side of the outer wall of the stirring plate, and the top of the outer wall of the linkage rod is slidably connected to the bottom of the outer wall of the second annular rack.

[0011] In a preferred embodiment of the present invention, the circular rod includes a circular shell and a first circular rod; the bottom end of the outer wall of the first circular rod is rotatably connected to the center of the bottom end of the inner wall of the circular shell; one end of the outer wall of a set of corrosion-resistant bristles is fixed to the outer wall of the first circular rod; a set of circular holes are provided on the outer wall of the circular shell, and the set of circular holes matches the set of corrosion-resistant bristles; the set of corrosion-resistant bristles are located outside the circular shell through the set of circular holes; the first circular rod is located in the hollow part of the ring gear; a second bolt is bolted to the handle of the first circular rod, and the bottom end of the outer wall of the second bolt penetrates the handle of the first circular rod; a set of limiting grooves are provided at the top end of the outer wall of the ring gear, and the set of limiting grooves matches the second bolt.

[0012] In a preferred embodiment of the present invention, a set of first circular shells is fixedly connected to the outer wall of the circular shell, and the set of first circular shells and a set of corrosion-resistant bristles are alternately distributed; an impact rod is fixedly connected to one side of the inner wall of the first circular shell by a second spring, and the outer wall of the impact rod is slidably connected to the inner wall of the first circular shell; one end of the outer wall of the impact rod is semi-circular.

[0013] In a preferred embodiment of the present invention, the outer wall of the annular plate is slidably connected to the inner wall of the rotating shaft; the outer wall of the rotating shaft is rotatably connected to a second threaded rod through a first square plate, and the bottom end of the outer wall of the second threaded rod penetrates the annular plate, and the second threaded rod is threadedly connected to the annular plate; a worm gear is fixedly connected to the outer wall of the second threaded rod; a worm is rotatably connected to the outer wall of the rotating shaft through a connecting block, and the worm and the worm gear mesh with each other; both the worm and the worm gear are located between the placement shell and the filter shell.

[0014] A two-stage purification method for removing sulfuric acid reducing agents, comprising the following steps:

[0015] Step 1: By feeding sulfuric acid into the tank through the feed pipe, the sulfuric acid will fall into the filter shell and be filtered by the filter shell. Finally, it will fall into the placement shell. Then, oxygen or air is used as an oxidant and is transported to the placement shell through the oxygen pipe, so that the oxygen or air can fully contact the sulfuric acid and undergo an oxidation reaction. Then, a catalyst such as vanadium pentoxide is transported to the placement shell through the catalyst pipe, so that the catalyst can mix and react with sulfuric acid and oxygen or air.

[0016] Step 2: After the sulfuric acid has fully reacted with oxygen or air and catalyst, water or other absorbents are sprayed from the first spray pipe into the placement shell, so that the water or other absorbents are sprayed on the surface of the sulfuric acid, and fully contact and react with the impurities in the sulfuric acid, thereby removing gaseous impurities and small particles from the sulfuric acid, and completing the sulfuric acid pretreatment process.

[0017] Step 3: The motor drives the rotating shaft to rotate, which in turn drives the stirring plate to rotate. This causes the stirring plate to agitate the sulfuric acid and oxygen or air, catalyst, and spray liquid, allowing the sulfuric acid to fully contact and react with oxygen or air, catalyst, and spray liquid under the force of agitation.

[0018] Step 4: When the rotating shaft drives the stirring plate to rotate, the rotation of the rotating shaft will drive the rotating rod to rotate through the first sprocket and chain. The rotation of the rotating rod will drive the first gear to rotate. Since the first gear meshes with the first ring rack, the rotation of the first gear will drive the placement shell to rotate through the first ring rack. The rotation direction of the placement shell is different from the rotation direction of the stirring plate. Thus, through double counter-rotation, sulfuric acid, catalyst, oxygen and washing liquid are mixed and reacted.

[0019] Step 5: After the sulfuric acid pretreatment section is completed, oxygen, hydrogen peroxide and other deep oxidants are transported from the oxygen pipe to the placement shell to react with sulfuric acid, so that the oxidation reaction of sulfuric acid is fully carried out. Then, an appropriate amount of catalyst is added through the catalyst pipe, and then dilute sulfuric acid, alkaline solution and other washing liquids are transported into the placement shell through the second spray pipe, so that the washing liquid is evenly sprayed on the surface of sulfuric acid, and fully contacted and reacted with the impurities in sulfuric acid, so as to ensure the effective removal of trace reducing agents and gaseous impurities, thus completing the deep treatment section.

[0020] Step Six: After the sulfuric acid completes the deep treatment process, open the closing plate by the handle. At this time, the closed channel is in the open state. The staff will then wrap the filter cloth or filter paper around the outer wall of the placement shell through the closed channel. By rotating the placement shell, it is easier for the filter cloth or filter paper to be wrapped around the outer wall of the placement shell and block the filter channel. Then, rotate the first threaded rod. Since the first threaded rod is threadedly connected to the square plate, the rotation of the first threaded rod will drive the square plate to move. The movement of the square plate will drive the extrusion plate to move, so that the extrusion plate will cooperate with the outer wall of the placement shell to fix the two ends of the filter cloth or filter paper.

[0021] Step 7: After the filter cloth or filter paper is placed, rotate the first bolt to move it out of the locking groove, release the tension plate, then stretch the tension plate to move the baffle upward. Rotate the first bolt again to lock it into the locking groove and fix the tension plate. At this time, the baffle can no longer block the filter tank. Close the closed passage and rotate the placement shell. At this time, the sulfuric acid will fall to the bottom of the box through the filter tank and the filter cloth or filter paper, so that the sulfuric acid is filtered by the filter tank and the filter cloth or filter paper to remove impurities.

[0022] Step 8: When the rotating shaft drives the annular plate and the stirring plate to rotate, the rotation of the stirring plate will drive the circular rod and the corrosion-resistant bristles to rotate. Since the outer top of the circular rod is fixed with an annular gear, and the annular gear meshes with the second annular rack, when the circular rod and the annular gear rotate around the rotating shaft, the annular gear will rotate on its own axis, thereby driving the circular rod and the corrosion-resistant bristles to rotate on their own axis. This allows the corrosion-resistant bristles to clean the inner wall of the housing and the filter tank during their rotation.

[0023] Step 9: Using the circular rod, which includes the circular shell and the first circular rod, rotate the second bolt to move the second bolt out of the limiting groove, release the fixation of the first circular rod, and then rotate the first circular rod. When the first circular rod rotates, the corrosion-resistant bristles will either wrap around the first circular rod or move out of the circular shell, so that the length of the corrosion-resistant bristles outside the circular shell can be adjusted according to the cleaning situation and wear condition.

[0024] Step 10: When the circular rod rotates, the rotation of the circular rod will drive the first circular shell and the impact rod to rotate, causing the impact rod to strike the inner wall of the placement shell and generate vibration force, thereby causing the impurities to be shaken off under the action of vibration force.

[0025] Step 11: By rotating the worm, the worm and worm wheel mesh with each other, causing the worm to rotate and the worm wheel to rotate. The rotation of the worm wheel causes the second threaded rod to rotate. Since the second threaded rod is threadedly connected to the annular plate, the rotation of the second threaded rod causes the annular plate to move up and down, so that the position of the stirring plate can be adjusted.

[0026] Step 12: When the sulfuric acid falls to the bottom of the tank, the heating device heats and distills the sulfuric acid, turning it from a liquid into a gas. The gas is then cooled and collected as a liquid through the cooling collection pipe. After the sulfuric acid is collected, the washing liquid and other waste are recovered through the discharge pipe.

[0027] Compared with the prior art, the beneficial effects of the present invention are:

[0028] 1. The rotation of the rotating shaft drives the rotating rod to rotate via the first sprocket and chain. The rotation of the rotating rod drives the first gear to rotate. Because the first gear meshes with the first ring rack, the rotation of the first gear drives the placement shell to rotate via the first ring rack. The rotation direction of the placement shell is different from that of the stirring plate. This double counter-rotation allows the sulfuric acid to mix and react with other catalysts, oxygen, and washing liquid more quickly. When the sulfuric acid rotates in one direction, it may cause the sulfuric acid to remain relatively stationary with other catalysts, oxygen, and washing liquid, resulting in low mixing efficiency. The double counter-rotation solves the problem of the sulfuric acid remaining relatively stationary with other catalysts, oxygen, and washing liquid.

[0029] 2. By rotating the first bolt, the first bolt is moved out of the locking groove, releasing the tension plate. Then, the tension plate is stretched, causing the baffle to move upward. The first bolt is then rotated again to lock into the locking groove, fixing the tension plate. At this point, the baffle can no longer block the filter tank. The closed passage is then closed, causing the housing to rotate. Sulfuric acid will then fall to the bottom of the tank through the filter tank and filter cloth or filter paper. When the sulfuric acid passes through the filter tank and filter cloth or filter paper, the filter tank and filter cloth or filter paper will perform double filtration of the sulfuric acid, thereby trapping small particles and suspended matter in the sulfuric acid, thus improving the quality of the sulfuric acid and reducing impurities in the sulfuric acid. Attached Figure Description

[0030] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0031] Figure 1 This is a structural diagram of the main body of the present invention;

[0032] Figure 2 This is a partial structural diagram of the main body of the present invention;

[0033] Figure 3 This is a structural diagram of the housing, rotating rod, first gear, and first annular rack of the present invention;

[0034] Figure 4 This is an exploded structural diagram of the baffle and the housing of the present invention;

[0035] Figure 5This is a structural diagram of the square plate, the extrusion plate, and the first threaded rod of the present invention;

[0036] Figure 6 This is a structural diagram of the second annular rack, stirring plate, annular gear, and circular rod of the present invention;

[0037] Figure 7 This is a structural diagram of the annular plate, stirring plate, circular rod, second threaded rod, and worm gear of the present invention;

[0038] Figure 8 This is an exploded structural diagram of the circular shell and the first circular rod of the present invention;

[0039] Figure 9 This is an exploded structural diagram of the first circular shell and the impact rod of the present invention;

[0040] In the diagram: 1. Box body; 2. Support plate; 3. Discharge pipe; 4. Feed pipe; 5. Oxygen pipe; 6. Catalyst pipe; 7. Filter shell; 8. Placement shell; 9. Motor; 10. Rotating shaft; 11. Annular plate; 12. Stirring plate; 13. First annular rack; 14. Rotating rod; 15. First gear; 16. First sprocket; 17. Chain; 18. First spray pipe; 19. Second spray pipe; 20. Annular groove; 21. Filter groove; 22. Baffle; 23. Stretching plate; 24. Locking groove; 25. First bolt; 26. Addition... 27. Heating device; 28. Cooling collection pipe; 29. ​​First threaded rod; 30. Guide rod; 31. Square plate; 32. Extrusion plate; 33. Square through groove; 34. Circular rod; 35. Corrosion-resistant bristles; 36. Ring gear; 37. Second ring rack; 38. Linkage rod; 39. Circular shell; 40. First round rod; 41. Circular hole; 42. Second bolt; 43. Limiting groove; 44. First round shell; 45. Impact rod; 46. Second threaded rod; 47. Worm gear; 48. Worm; 49. Closed through groove; 40. Closed plate. Detailed Implementation

[0041] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] Example 1:

[0043] Please see Figures 1-9As shown, a two-stage purification sulfuric acid reducing agent removal device includes a housing 1; a support plate 2 is fixedly connected to the bottom of the outer wall of the housing 1; a discharge pipe 3 is fixedly connected to the bottom of the outer wall of the housing 1 and is connected to the housing 1; a feed pipe 4 is fixedly connected to the top of the outer wall of the housing 1 and is connected to the housing 1, and valves are provided inside both the feed pipe 4 and the discharge pipe 3; an oxygen pipe 5 and a catalyst pipe 6 are fixedly connected to the top of the outer wall of the housing 1, and the bottom of the outer walls of the oxygen pipe 5 and the catalyst pipe 6 both penetrate the top of the outer wall of the housing 1 and are located inside the housing 1; a filter shell 7 is fixedly connected to the top of the inner wall of the housing 1, and the feed pipe 4 is located above the filter shell 7; a placement shell 8 is rotatably connected to the bottom of the inner wall of the housing 1 via a cylinder, and the placement shell 8 is located below the filter shell 7; the oxygen pipe 5 and the catalyst pipe 6 are located between the inner side wall of the placement shell 8 and the outer side wall of the filter shell 7; A motor 9 is fixedly connected to the top of the outer wall of body 1 via a fixing block; the output end of motor 9 is provided with a rotating shaft 10, and the bottom end of the outer wall of rotating shaft 10 passes through the top of the outer wall of body 1 and the filter shell 7 and is located inside the placement shell 8; a set of stirring plates 12 is provided on the outer wall of the end of rotating shaft 10 located inside the placement shell 8 via an annular plate 11. The rotating shaft 10 is driven to rotate by motor 9, and the rotating shaft 10 drives the stirring plates 12 to rotate, so that the stirring plates 12 agitate the sulfuric acid in the placement shell 8, so that the sulfuric acid can fully contact and react with oxygen or air, preliminary catalyst and washing liquid under the action of stirring, thereby improving the oxidation reaction efficiency of sulfuric acid, and so that the sulfuric acid can be uniformly mixed and reacted with oxygen or air and preliminary catalyst under the action of stirring, thereby solving the problem that some sulfuric acid cannot fully contact oxygen or air and preliminary catalyst, and thus the quality is not up to standard.

[0044] A first annular rack 13 is fixedly connected to the top of the outer wall of the housing 8; a rotating rod 14 is rotatably connected to the top of the outer wall of the box 1, and the bottom end of the outer wall of the rotating rod 14 penetrates the top of the outer wall of the box 1; a first gear 15 is fixedly connected to the bottom end of the outer wall of the rotating rod 14, and the first gear 15 meshes with the first annular rack 13; a first sprocket 16 is fixedly connected to the top of the outer wall of the rotating rod 14 and the outer wall of the rotating shaft 10, and a pair of first sprockets 16 are connected by a chain 17; a first spray pipe 18 and a second spray pipe 19 are fixedly connected to the outer wall of the box 1, and one end of the outer wall of the first spray pipe 18 and the second spray pipe 19 penetrates the outer wall of the box 1 and is located inside the box 1; the first spray pipe 18 and the second spray pipe 19 are both located between the bottom end of the outer wall of the filter shell 7 and the top end of the outer wall of the housing 8; the first spray pipe 18 and the second spray pipe 19 are L-shaped, and when the rotating shaft 10 drives the stirring plate 1 2. When rotating, the rotation of the rotating shaft 10 will drive the rotating rod 14 to rotate through the first sprocket 16 and chain 17. The rotation of the rotating rod 14 will drive the first gear 15 to rotate. Since the first gear 15 meshes with the first ring rack 13, the rotation of the first gear 15 will drive the placement shell 8 to rotate through the first ring rack 13. The rotation direction of the placement shell 8 is different from the rotation direction of the stirring plate 12. Thus, through double counter-rotation, the sulfuric acid can be mixed and reacted more quickly with other catalysts, oxygen and washing liquid. When the sulfuric acid rotates in one direction, it may cause the sulfuric acid to form a relatively static state with other catalysts, oxygen and washing liquid, resulting in low mixing reaction efficiency. The double counter-rotation solves the problem of the sulfuric acid maintaining a relatively static state with other catalysts, oxygen and washing liquid.

[0045] A first threaded rod 28 is rotatably connected to the outer wall of the housing 8; a guide rod 29 is fixedly connected to the bottom end of the outer wall of the housing 8; a square plate 30 is bolted to the outer wall of the first threaded rod 28, and the square plate 30 is slidably connected to the guide rod 29; a pressing plate 31 is fixedly connected to one side of the outer wall of the square plate 30 by a first spring, and the pressing plate 31 is arc-shaped and matches the outer wall of the housing 8. The closing plate 47 is opened by the handle, and the closing groove 46 is in the open state. At this time, the operator wraps the filter cloth or filter paper around the outer wall of the housing 8 through the closing groove 46. By rotating the housing 8, the filter cloth or filter paper is opened. Wrapping the filter cloth or filter paper around the outer wall of the housing 8 makes it easier to block the filter groove 21. Then, rotating the first threaded rod 28, which is threadedly connected to the square plate 30, causes the square plate 30 to move. The movement of the square plate 30 causes the pressing plate 31 to move, which in turn fixes the two ends of the filter cloth or filter paper to the outer wall of the housing 8. The filter cloth or filter paper is then fixed to the outer wall of the housing 8. Reversing the first threaded rod 28 allows the filter cloth or filter paper to be removed, making the placement and removal of the filter cloth or filter paper convenient and quick.

[0046] An annular groove 20 is formed at the top of the outer wall of the housing 8; a set of filter grooves 21 is formed at the bottom of the outer wall of the housing 8, and all filter grooves 21 are connected to the annular groove 20; a baffle 22 is slidably connected to the inner wall of the annular groove 20, and the baffle 22 matches the set of filter grooves 21; a tension plate 23 is fixedly connected to the top of the outer wall of the baffle 22; a set of locking grooves 24 is formed on one side of the outer wall of the tension plate 23; a first bolt 25 is threadedly connected to the outer wall of the housing 8, and one end of the outer wall of the first bolt 25 penetrates the outer wall of the housing 8 and is located in the annular groove 20, and the first bolt 25 matches the set of locking grooves 24; a heating device 26 is provided at the bottom of the inner wall of the box 1; a cooling collection pipe 27 is fixedly connected to the bottom of the outer wall of the box 1, and the cooling collection pipe 27 is connected to the box 1; a closed through groove 46 is formed on the outer wall of the box 1; a closing plate is hinged to the top of the inner wall of the closed through groove 46. 47, and a torsion spring is provided at the junction of the closing plate 47 and the closing channel 46; a handle is fixed to the outer wall of the closing plate 47. After the filter cloth or filter paper is placed, the first bolt 25 is rotated to move the first bolt 25 out of the locking groove 24, releasing the fixation of the stretching plate 23. Then the stretching plate 23 is stretched, causing the stretching plate 23 to drive the baffle 22 to move upward. Then the first bolt 25 is rotated to lock the first bolt 25 into the locking groove 24, fixing the stretching plate 23. At this time, the baffle 22 cannot block the filter channel 21. At this time, the closing channel 46 is closed, causing the placement shell 8 to rotate. At this time, the sulfuric acid will fall to the bottom of the box 1 through the filter channel 21 and the filter cloth or filter paper. When the sulfuric acid passes through the filter channel 21 and the filter cloth or filter paper, the filter channel 21 and the filter cloth or filter paper will perform double filtration on the sulfuric acid, thereby intercepting the small particles and suspended matter in the sulfuric acid, thereby improving the quality of the sulfuric acid and reducing the impurities in the sulfuric acid.

[0047] One side of the outer wall of a set of stirring plates 12 is fixed to the outer wall of the annular plate 11; a square through groove 32 is opened on one side of the outer wall of the stirring plate 12; a circular rod 33 is rotatably connected to the bottom of the inner wall of the square through groove 32, and the top of the outer wall of the circular rod 33 penetrates through the stirring plate 12; a set of corrosion-resistant bristles 34 is provided on the outer wall of the circular rod 33; an annular gear 35 is fixedly connected to the top of the outer wall of the circular rod 33; a second annular rack 36 is slidably connected to the inner wall of the housing 8, and the second annular rack 36 meshes with the annular gear 35; a linkage rod 37 is fixedly connected to one side of the outer wall of the stirring plate 12, and the top of the outer wall of the linkage rod 37 is slidably connected to the bottom of the outer wall of the second annular rack 36. When the rotating shaft 10 drives the annular plate When the stirring plate 11 and the stirring plate 12 rotate, the rotation of the stirring plate 12 will drive the circular rod 33 and the corrosion-resistant bristles 34 to rotate. Since the outer top of the circular rod 33 is fixedly connected to the ring gear 35, and the ring gear 35 meshes with the second ring rack 36, when the circular rod 33 and the ring gear 35 rotate around the rotating shaft 10, the ring gear 35 will rotate on its own axis, thereby causing the ring gear 35 to drive the circular rod 33 and the corrosion-resistant bristles 34 to rotate on their own axis. This allows the corrosion-resistant bristles 34 to clean the inner wall of the housing 8 and the filter tank 21 when they rotate, thus making the filter tank 21 less prone to clogging. Also, when the housing 8 is being cleaned, the corrosion-resistant bristles 34 make the cleaning of the housing 8 more convenient and faster.

[0048] The circular rod 33 includes a circular shell 331 and a first circular rod 332; the bottom end of the outer wall of the first circular rod 332 is rotatably connected to the center of the bottom end of the inner wall of the circular shell 331; one end of the outer wall of a set of corrosion-resistant bristles 34 is fixed to the outer wall of the first circular rod 332; a set of circular holes 38 are provided on the outer wall of the circular shell 331, and the set of circular holes 38 matches the set of corrosion-resistant bristles 34; the set of corrosion-resistant bristles 34 are located outside the circular shell 331 through the set of circular holes 38; the first circular rod 332 is located in the hollow part of the ring gear 35; a second bolt 39 is bolted to the handle of the first circular rod 332, and the bottom end of the outer wall of the second bolt 39 passes through the handle of the first circular rod 332; a set of limiting grooves 40 are provided on the top end of the outer wall of the ring gear 35, and the set of limiting grooves 40 matches the second bolt 39; by rotating the second bolt 39, the first circular rod 332, including the circular shell 331 and the first circular rod 332, is used to make the first circular rod 332... Two bolts 39 are removed from the limiting groove 40, releasing the fixation of the first round rod 332. Then, the first round rod 332 is rotated. When the first round rod 332 rotates, the corrosion-resistant bristles 34 will wrap around the first round rod 332 or move out of the circular shell 331. This allows the device to adjust the length of the corrosion-resistant bristles 34 outside the circular shell 331 according to the cleaning situation and the wear of the corrosion-resistant bristles 34. This allows the corrosion-resistant bristles 34 to operate normally when worn and by adjusting the length, thereby increasing the service life of the corrosion-resistant bristles 34. Adjusting the length of the corrosion-resistant bristles 34 allows them to perform cleaning work more effectively without affecting other devices, such as filter cloth or filter paper. In various situations, such as cleaning the placement shell 8 and cleaning the filter tank 21, the corrosion-resistant bristles 34 can work better as needed.

[0049] A set of first circular shells 41 are fixed to the outer wall of the circular shell 331, and the set of first circular shells 41 and a set of corrosion-resistant bristles 34 are distributed alternately. An impact rod 42 is fixed to one side of the inner wall of the first circular shell 41 by a second spring, and the outer wall of the impact rod 42 is slidably connected to the inner wall of the first circular shell 41. One end of the outer wall of the impact rod 42 is semi-circular. When the circular rod 33 rotates, the rotation of the circular rod 33 will drive the first circular shell 41 and the impact rod 42 to rotate, so that the impact rod 42 impacts the inner wall of the placement shell 8 to generate vibration force, thereby causing impurities to be shaken off under the action of vibration force, thereby further improving the cleaning efficiency and effect of the placement shell 8 and the anti-clogging effect of the filter tank 21.

[0050] Example 2:

[0051] Please see Figure 3 and Figures 6-7As shown, the outer wall of the annular plate 11 is slidably connected to the inner wall of the rotating shaft 10; the outer wall of the rotating shaft 10 is rotatably connected to a second threaded rod 43 via a first square plate, and the bottom end of the outer wall of the second threaded rod 43 penetrates the annular plate 11, and the second threaded rod 43 is threadedly connected to the annular plate 11; a worm gear 44 is fixedly connected to the outer wall of the second threaded rod 43; a worm 45 is rotatably connected to the outer wall of the rotating shaft 10 via a connecting block, and the worm 45 and the worm gear 44 mesh with each other; the worm 45 and the worm gear 44 are both located between the placement shell 8 and the filter shell 7. By rotating the worm 45, because the worm 45 and the worm gear 44 mesh with each other, the rotation of the worm 45 drives the worm gear 44 to rotate, and the rotation of the worm gear 44 drives the second threaded rod 43 to rotate. Because the second threaded rod 43 is threadedly connected to the annular plate 11, the second threaded rod 45... The rotation of plate 3 causes the annular plate 11 to move up and down, thereby allowing the device to adjust the position of the annular plate 11 and the stirring plate 12. This allows the device to adjust the position of the stirring plate 12 according to the amount of sulfuric acid, improving the stirring efficiency of the stirring plate 12 and adjusting the stirring range of the stirring plate 12. This makes the device suitable for various environments. When the stirring plate 12 moves up and down, the up and down movement of the stirring plate 12 will drive the second annular rack 36 to move up and down through the linkage rod 37. Because the second annular gear 35 is slidably connected to the inner wall of the housing 8, the linkage rod 37 can only drive the second annular rack 36 to move up and down, but cannot drive the second annular gear 35 to rotate. This ensures that the second annular gear 35 always remains in mesh with the annular gear 35 and does not affect the rotation of the annular gear 35.

[0052] In use, this invention involves feeding sulfuric acid into the housing 1 through the feed pipe 4. The sulfuric acid falls into the filter shell 7, where it is filtered and finally falls into the placement shell 8. Oxygen or air, acting as an oxidant, is then supplied to the placement shell 8 through the oxygen pipe 5, allowing the oxygen or air to fully contact the sulfuric acid and initiate an oxidation reaction. A preliminary catalyst, such as vanadium pentoxide, is then supplied to the placement shell 8 through the catalyst pipe 6 to increase the rate and efficiency of the oxidation reaction. Simultaneously, the motor 9 drives the rotating shaft 10, which in turn drives the stirring plate 12, agitating the sulfuric acid. This agitation ensures that the sulfuric acid, under the influence of the stirring force, fully contacts and reacts with the oxygen or air and the preliminary catalyst, thereby improving the oxidation efficiency of the sulfuric acid and... Under stirring, sulfuric acid can be uniformly mixed and reacted with oxygen or air and a preliminary catalyst, thus solving the problem of some sulfuric acid failing to fully contact with oxygen or air and the preliminary catalyst, resulting in substandard quality. After the sulfuric acid has fully reacted with oxygen or air and the preliminary catalyst, water or other absorbents are sprayed from the first spray pipe 18 into the placement shell 8, allowing the water or other absorbents to be sprayed onto the surface of the sulfuric acid. This ensures full contact and reaction with impurities in the sulfuric acid, thereby removing gaseous impurities and small particles. Furthermore, the stirring of the stirring plate 12 ensures that the water or other absorbents can fully contact the sulfuric acid, thus enabling the sulfuric acid to undergo preliminary absorption and washing, removing gaseous impurities and small particles from the sulfuric acid. The particle removal is more thorough. After the sulfuric acid pretreatment section is completed, oxygen, hydrogen peroxide, and other deep oxidants are transported from oxygen pipe 5 to the placement shell 8 to react with sulfuric acid, ensuring a complete oxidation reaction. Then, an appropriate amount of catalyst is added through catalyst pipe 6 to improve the rate and efficiency of the oxidation reaction. Dilute sulfuric acid, alkaline solution, and other washing solutions are then transported to the placement shell 8 through the second spray pipe 19, ensuring the washing solution is evenly sprayed onto the sulfuric acid surface, allowing for full contact and reaction with impurities in the sulfuric acid. This ensures effective removal of trace reducing agents and gaseous impurities. The stirring plate 12 further agitates the washing solution, ensuring thorough mixing and reaction with the sulfuric acid. When the rotating shaft 10 drives the stirring plate 12 to rotate, the rotation of the rotating shaft 10 will... The first sprocket 16 and chain 17 drive the rotating rod 14 to rotate, which in turn drives the first gear 15 to rotate. Since the first gear 15 meshes with the first annular rack 13, the rotation of the first gear 15 drives the placement shell 8 to rotate via the first annular rack 13. The rotation direction of the placement shell 8 is different from that of the stirring plate 12. This double-opposite rotation allows for a faster mixing reaction of sulfuric acid with other catalysts, oxygen, and washing liquid. If the sulfuric acid rotates continuously in one direction, it may cause the sulfuric acid to remain relatively stationary with other catalysts, oxygen, and washing liquid, resulting in lower mixing efficiency. However, this double-opposite rotation...This solves the problem of maintaining a relatively static state between sulfuric acid and other catalysts, oxygen, and washing liquid. After the sulfuric acid reaction is complete, the closing plate 47 is opened by the handle, at which point the closed channel 46 is open. The operator then wraps filter cloth or filter paper around the outer wall of the placement shell 8 through the closed channel 46. The rotation of the placement shell 8 facilitates the wrapping of the filter cloth or filter paper around the outer wall, thus blocking the filter groove 21. Then, the first threaded rod 28 is rotated. Because the first threaded rod 28 is threadedly connected to the square plate 30, the rotation of the first threaded rod 28 moves the square plate 30. The movement of the square plate 30 moves the extrusion plate 31, causing the extrusion plate 31 to cooperate with the outer wall of the placement shell 8. The sidewalls fix both ends of the filter cloth or filter paper, securing it to the outer side wall of the housing 8. Reversing the first threaded rod 28 allows the filter cloth or filter paper to be removed, making placement and removal convenient and quick. After placement, the first bolt 25 is rotated to move out of the locking groove 24, releasing the tension plate 23. Then, the tension plate 23 is stretched, causing the baffle 22 to move upwards. The first bolt 25 is then rotated again to engage in the locking groove 24, fixing the tension plate 23. At this point, the baffle 22 can no longer block the filter groove 21. The closing channel 46 is then closed, causing the housing 8 to rotate, allowing sulfuric acid to pass through. The filter tank 21 and filter cloth or filter paper fall to the bottom of the box 1. When sulfuric acid passes through the filter tank 21 and filter cloth or filter paper, the filter tank 21 and filter cloth or filter paper will perform double filtration of the sulfuric acid, thereby intercepting the small particles and suspended matter in the sulfuric acid, thus improving the quality of the sulfuric acid and reducing the impurities in the sulfuric acid. When the rotating shaft 10 drives the annular plate 11 and the stirring plate 12 to rotate, the rotation of the stirring plate 12 will drive the circular rod 33 and the corrosion-resistant bristles 34 to rotate. Because the outer wall of the circular rod 33 is fixedly connected to the top of the ring gear 35, and the ring gear 35 meshes with the second ring rack 36, when the circular rod 33 and the ring gear 35 rotate around the rotating shaft 10, the ring gear 35 will rotate on its own axis, thus... The ring gear 35 drives the circular rod 33 and the corrosion-resistant bristles 34 to rotate, thereby cleaning the inner wall of the housing 8 and the filter tank 21 during rotation. This prevents the filter tank 21 from clogging and makes cleaning the housing 8 more convenient and faster. The circular rod 33, including the circular housing 331 and the first circular rod 332, allows the second bolt 39 to be moved out of the limiting groove 40 by rotating it, releasing the first circular rod 332. As the first circular rod 332 rotates, the corrosion-resistant bristles 34 either wrap around it or move out of the circular housing 331.This allows the device to adjust the length of the corrosion-resistant bristles 34 outside the circular shell 331 according to the cleaning conditions and the wear of the bristles 34. This ensures the corrosion-resistant bristles 34 can operate normally even when worn, thus increasing their service life. Adjusting the length of the bristles allows for more efficient cleaning without interfering with other components, such as filter cloth or filter paper. This is applicable in various situations, including cleaning the placement shell 8 and cleaning the filter tank 21. The corrosion-resistant bristles 34 can be made to work better according to requirements. When the circular rod 33 rotates, the rotation of the circular rod 33 will drive the first circular shell 41 and the impact rod 42 to rotate, causing the impact rod 42 to hit the inner wall of the placement shell 8 and generate vibration force. This vibration force will shake off the impurities, thereby further improving the cleaning efficiency and effect of the placement shell 8 and the anti-clogging effect of the filter tank 21. Furthermore, by rotating the worm 45, since the worm 45 and the worm wheel 44 mesh with each other, the rotation of the worm 45 drives the rotation of the worm wheel 44, and the rotation of the worm wheel 44 drives the first circular shell 41 and the impact rod 42 to rotate. The rotation of the second threaded rod 43, connected to the annular plate 11, causes the annular plate 11 to move up and down, thus allowing the device to adjust the positions of the annular plate 11 and the stirring plate 12. This allows the device to adjust the position of the stirring plate 12 according to the amount of sulfuric acid, improving the stirring efficiency and range of the stirring plate 12, making the device suitable for various environments. When the sulfuric acid falls to the bottom of the tank 1, the heating device 26 heats and distills the sulfuric acid, turning it from liquid to gas. This gas is then cooled and collected as liquid through the cooling collection pipe 27. This further distillation not only separates the sulfuric acid from washing liquids, improving its quality, but also allows for the recovery and reuse of washing liquids, reducing the cost of sulfuric acid production. This further purification further enhances the quality of the sulfuric acid. After the sulfuric acid is collected, the washing liquids can be recovered through the discharge pipe 3, and impurities inside the housing 8 can be collected through the oxygen pipe 5 and catalyst pipe 6, ensuring a clean sulfuric acid treatment environment within the tank 1.

[0053] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A two-stage sulfuric acid refining reducing agent removal device, comprising a housing (1); a support plate (2) is fixedly connected to the bottom of the outer wall of the housing (1); a discharge pipe (3) is fixedly connected to the bottom of the outer wall of the housing (1), and the discharge pipe (3) is connected to the housing (1); a feed pipe (4) is fixedly connected to the top of the outer wall of the housing (1), and the feed pipe (4) is connected to the housing (1), and valves are provided inside both the feed pipe (4) and the discharge pipe (3); an oxygen pipe (5) and a catalyst pipe (6) are fixedly connected to the top of the outer wall of the housing (1), and the bottom of the outer walls of the oxygen pipe (5) and the catalyst pipe (6) both penetrate the top of the outer wall of the housing (1) and are located inside the housing (1); characterized in that, A filter shell (7) is fixedly connected to the top of the inner wall of the box (1), and the feed pipe (4) is located above the filter shell (7); a placement shell (8) is rotatably connected to the bottom of the inner wall of the box (1) through a cylinder, and the placement shell (8) is located below the filter shell (7); the oxygen pipe (5) and the catalyst pipe (6) are located between the inner side wall of the placement shell (8) and the outer side wall of the filter shell (7); a motor (9) is fixedly connected to the top of the outer wall of the box (1) through a fixing block; the output end of the motor (9) is provided with a rotating shaft (10), and the bottom of the outer wall of the rotating shaft (10) penetrates the top of the outer wall of the box (1) and the filter shell (7) and is located inside the placement shell (8); a set of stirring plates (12) is provided on the outer side wall of the rotating shaft (10) located inside the placement shell (8) through an annular plate (11).

2. The two-stage sulfuric acid refining reducing agent removal device according to claim 1, characterized in that, A first annular rack (13) is fixedly connected to the top of the outer wall of the placement shell (8); a rotating rod (14) is rotatably connected to the top of the outer wall of the box (1), and the bottom end of the outer wall of the rotating rod (14) penetrates the top of the outer wall of the box (1); a first gear (15) is fixedly connected to the bottom end of the outer wall of the rotating rod (14), and the first gear (15) meshes with the first annular rack (13); a first sprocket (16) is fixedly connected to the top of the outer wall of the rotating rod (14) and the outer wall of the rotating shaft (10), and a pair of... The first sprocket (16) is connected by a chain (17); the outer wall of the box (1) is fixed with a first spray pipe (18) and a second spray pipe (19), and one end of the outer wall of the first spray pipe (18) and the second spray pipe (19) penetrates the outer wall of the box (1) and is located inside the box (1). The first spray pipe (18) and the second spray pipe (19) are both located between the bottom end of the outer wall of the filter shell (7) and the top end of the outer wall of the placement shell (8); the first spray pipe (18) and the second spray pipe (19) are L-shaped.

3. The two-stage sulfuric acid refining reducing agent removal device according to claim 2, characterized in that, The top of the outer wall of the placement shell (8) is provided with an annular groove (20); a set of filter grooves (21) is provided at the bottom of the outer wall of the placement shell (8), and the set of filter grooves (21) are all connected to the annular groove (20); a baffle (22) is slidably connected to the inner wall of the annular groove (20), and the baffle (22) matches the set of filter grooves (21); a tension plate (23) is fixedly connected to the top of the outer wall of the baffle (22); a set of locking grooves (24) is provided on one side of the outer wall of the tension plate (23); a first bolt (25) is threadedly connected to the outer wall of the placement shell (8), and the outer wall of the first bolt (25) is threadedly connected to the first bolt (25). The outer wall of the shell (8) is located in the annular groove (20), and the first bolt (25) matches a set of locking grooves (24); a heating device (26) is provided at the bottom of the inner wall of the box (1); a cooling collection pipe (27) is fixedly connected to the bottom of the outer wall of the box (1), and the cooling collection pipe (27) is connected to the box (1); a closed through groove (46) is opened on the outer wall of the box (1); a closing plate (47) is hinged to the top of the inner wall of the closed through groove (46), and a torsion spring is provided at the junction of the closing plate (47) and the closed through groove (46); a handle is fixedly connected to the outer wall of the closing plate (47).

4. The two-stage sulfuric acid refining reducing agent removal device according to claim 3, characterized in that, The outer wall of the placement shell (8) is rotatably connected to a first threaded rod (28); a guide rod (29) is fixedly connected to the bottom end of the outer wall of the placement shell (8); a square plate (30) is bolted to the outer wall of the first threaded rod (28), and the square plate (30) is slidably connected to the guide rod (29); a pressing plate (31) is fixedly connected to one side of the outer wall of the square plate (30) by a first spring, and the pressing plate (31) is arc-shaped and matches the outer wall of the placement shell (8).

5. The two-stage purification sulfuric acid reducing agent removal device according to claim 1, characterized in that, One side of the outer wall of a set of stirring plates (12) is fixed to the outer wall of an annular plate (11); a square through groove (32) is provided on one side of the outer wall of the stirring plate (12); a circular rod (33) is rotatably connected to the bottom of the inner wall of the square through groove (32), and the top of the outer wall of the circular rod (33) penetrates the stirring plate (12); a set of corrosion-resistant bristles (34) is provided on the outer wall of the circular rod (33); an annular gear (35) is fixedly connected to the top of the outer wall of the circular rod (33); a second annular rack (36) is slidably connected to the inner wall of the placement shell (8), and the second annular rack (36) meshes with the annular gear (35); a linkage rod (37) is fixedly connected to one side of the outer wall of the stirring plate (12), and the top of the outer wall of the linkage rod (37) is slidably connected to the bottom of the outer wall of the second annular rack (36).

6. The two-stage sulfuric acid refining reducing agent removal device according to claim 5, characterized in that, The circular rod (33) includes a circular shell (331) and a first circular rod (332); the bottom end of the outer wall of the first circular rod (332) is rotatably connected to the center of the bottom end of the inner wall of the circular shell (331); one end of the outer wall of a set of corrosion-resistant bristles (34) is fixed to the outer wall of the first circular rod (332); a set of circular holes (38) are provided on the outer wall of the circular shell (331), and the set of circular holes (38) matches the set of corrosion-resistant bristles (34); the set of corrosion-resistant bristles... The bristles (34) are located outside the circular shell (331) through a set of round holes (38); the first round rod (332) is located in the hollow part of the ring gear (35); the handle of the first round rod (332) is bolted to a second bolt (39), and the bottom end of the outer wall of the second bolt (39) passes through the handle of the first round rod (332); a set of limiting grooves (40) is opened at the top of the outer wall of the ring gear (35), and the set of limiting grooves (40) matches the second bolt (39).

7. The two-stage sulfuric acid refining reducing agent removal device according to claim 6, characterized in that, A set of first circular shells (41) are fixed to the outer wall of the circular shell (331), and the set of first circular shells (41) and a set of corrosion-resistant bristles (34) are alternately distributed; an impact rod (42) is fixed to one side of the inner wall of the first circular shell (41) by a second spring, and the outer wall of the impact rod (42) is slidably connected to the inner wall of the first circular shell (41); one end of the outer wall of the impact rod (42) is semi-circular.

8. The two-stage sulfuric acid refining reducing agent removal device according to claim 1, characterized in that, The outer wall of the annular plate (11) is slidably connected to the inner wall of the rotating shaft (10); the outer wall of the rotating shaft (10) is rotatably connected to a second threaded rod (43) through a first square plate, and the bottom end of the outer wall of the second threaded rod (43) penetrates the annular plate (11), and the second threaded rod (43) is threadedly connected to the annular plate (11); a worm wheel (44) is fixedly connected to the outer wall of the second threaded rod (43); a worm (45) is rotatably connected to the outer wall of the rotating shaft (10) through a connecting block, and the worm (45) and the worm wheel (44) mesh with each other; the worm (45) and the worm wheel (44) are both located between the placement shell (8) and the filter shell (7).

9. A two-stage purification method for removing sulfuric acid reducing agents, characterized in that, Applied to the two-stage purification sulfuric acid reducing agent removal apparatus according to any one of claims 1-8, the method includes the following steps: Step 1: By feeding sulfuric acid into the box (1) through the feed pipe (4), the sulfuric acid will fall into the filter shell (7) and be filtered by the filter shell (7), and finally fall into the placement shell (8). Then, oxygen or air is used as an oxidant and transported from the oxygen pipe (5) to the placement shell (8) so that the oxygen or air can fully contact the sulfuric acid and undergo an oxidation reaction. Then, a catalyst such as vanadium pentoxide is transported from the catalyst pipe (6) to the placement shell (8) so that the catalyst can mix and react with sulfuric acid and oxygen or air. Step 2: After the sulfuric acid reacts fully with oxygen or air and catalyst, water or other absorbent spray liquid is transported from the first spray pipe (18) to the placement shell (8) so that the water or other absorbent spray liquid is sprayed on the surface of sulfuric acid, and fully contacted and reacted with the impurities in the sulfuric acid, thereby removing gaseous impurities and tiny particles in the sulfuric acid, and completing the sulfuric acid pretreatment process. Step 3: The motor (9) drives the rotating shaft (10) to rotate, and the rotating shaft (10) drives the stirring plate (12) to rotate, so that the stirring plate (12) stirs the sulfuric acid and oxygen or air and catalyst and spray liquid, so that the sulfuric acid can fully contact and react with oxygen or air and catalyst and spray liquid under the action of stirring. Step 4: When the rotating shaft (10) drives the stirring plate (12) to rotate, the rotation of the rotating shaft (10) will drive the rotating rod (14) to rotate through the first sprocket (16) and the chain (17). The rotation of the rotating rod (14) will drive the first gear (15) to rotate. Since the first gear (15) meshes with the first ring rack (13), the rotation of the first gear (15) will drive the placement shell (8) to rotate through the first ring rack (13). The rotation direction of the placement shell (8) is different from the rotation direction of the stirring plate (12). Thus, through double reverse rotation, sulfuric acid, catalyst, oxygen and washing liquid are mixed and reacted. Step 5: After the sulfuric acid pretreatment section is completed, oxygen, hydrogen peroxide and other deep oxidants are transported from the oxygen pipe (5) to the placement shell (8) to react with sulfuric acid to make the sulfuric acid oxidation reaction fully carried out. Then, an appropriate amount of catalyst is added through the catalyst pipe (6), and the washing liquid is transported to the placement shell (8) through the second spray pipe (19) to make the washing liquid evenly sprayed on the surface of sulfuric acid to fully contact and react with the impurities in sulfuric acid, so as to ensure the effective removal of trace reducing agents and gaseous impurities, and complete the deep treatment section process. Step 6: After the sulfuric acid completes the deep treatment process, open the closing plate (47) by the handle. At this time, the closed channel (46) is open. At this time, the staff will wrap the filter cloth or filter paper around the outer wall of the placement shell (8) through the closed channel (46). By rotating the placement shell (8), it is easier to wrap the filter cloth or filter paper around the outer wall of the placement shell (8) so that the filter cloth or filter paper can block the filter groove (21). Then rotate the first threaded rod (28). Since the first threaded rod (28) is threadedly connected to the square plate (30), the rotation of the first threaded rod (28) will drive the square plate (30) to move. The movement of the square plate (30) will drive the extrusion plate (31) to move, so that the extrusion plate (31) will cooperate with the outer wall of the placement shell (8) to fix the two ends of the filter cloth or filter paper. Step 7: After the filter cloth or filter paper is placed, rotate the first bolt (25) to move the first bolt (25) out of the locking groove (24), release the fixation of the stretching plate (23), stretch the stretching plate (23) again, so that the stretching plate (23) drives the baffle (22) to move upward, rotate the first bolt (25) again to make the first bolt (25) lock into the locking groove (24), fix the stretching plate (23), at this time the baffle (22) cannot block the filter tank (21), at this time close the closed passage (46), so that the placement shell (8) rotates, at this time the sulfuric acid falls to the bottom of the box (1) through the filter tank (21) and the filter cloth or filter paper, so that the sulfuric acid is filtered by the filter tank (21) and the filter cloth or filter paper to remove impurities; Step 8: When the rotating shaft (10) drives the annular plate (11) and the stirring plate (12) to rotate, the rotation of the stirring plate (12) will drive the circular rod (33) and the corrosion-resistant bristles (34) to rotate. Since the outer wall of the circular rod (33) is fixedly connected to the top of the ring gear (35), and the ring gear (35) meshes with the second ring rack (36), when the circular rod (33) and the ring gear (35) rotate around the rotating shaft (10), the ring gear (35) rotates on its own, so that the ring gear (35) drives the circular rod (33) and the corrosion-resistant bristles (34) to rotate on its own, so that the corrosion-resistant bristles (34) clean the inner wall of the housing (8) and the filter tank (21) when rotating on their own. Step 9: Using the circular rod (33), which includes the circular shell (331) and the first circular rod (332), by rotating the second bolt (39), the second bolt (39) is moved out of the limiting groove (40), releasing the fixation of the first circular rod (332). Then, rotate the first circular rod (332). When the first circular rod (332) rotates, the corrosion-resistant bristles (34) will wrap around the first circular rod (332) or move out of the circular shell (331). The length of the corrosion-resistant bristles (34) outside the circular shell (331) can be adjusted according to the cleaning and wear conditions. Step 10: When the circular rod (33) rotates, the rotation of the circular rod (33) drives the first circular shell (41) and the impact rod (42) to rotate, causing the impact rod (42) to hit the inner wall of the placement shell (8) and generate vibration force, so that the impurities are shaken off under the action of vibration force. Step 11: By rotating the worm (45), the worm (45) meshes with the worm wheel (44), causing the worm (45) to rotate and the worm wheel (44) to rotate. The rotation of the worm wheel (44) causes the second threaded rod (43) to rotate. Since the second threaded rod (43) is threadedly connected to the annular plate (11), the rotation of the second threaded rod (43) causes the annular plate (11) to move up and down, thereby adjusting the position of the stirring plate (12). Step 12: When the sulfuric acid falls to the bottom of the box (1), the heating device (26) heats and distills the sulfuric acid, turning it from a liquid into a gas. The gas is then cooled and collected as a liquid through the cooling collection pipe (27). After the sulfuric acid collection is completed, the washing liquid is recovered through the discharge pipe (3).

Images