Industrial kiln flue gas precious metal purification and resource utilization equipment and method

Abstract

The invention discloses industrial kiln flue gas precious metal purification and resource utilization equipment and method, and belongs to the technical field of flue gas treatment. In order to solve the problems that in the prior art, purification efficiency is low, precious metal is difficult to recycle, and spraying liquid is prone to secondary pollution, the equipment is composed of a spraying tower and a resource utilization device, an exhaust disc and multiple layers of rotating discs are arranged in the spraying tower, flue gas is primarily dispersed through rotation of the exhaust disc driven by an arc-shaped groove, and then secondary dispersion is achieved through exhaust holes of the rotating discs; and in cooperation with an alkaline solution or a chelating agent sprayed by the spraying pipe, purified flue gas is filtered and discharged through the activated carbon layer. The recycling device comprises a rotatable collecting box, four collecting pools are arranged in the collecting box to alternately receive spraying liquid, a driving shaft drives a special-shaped convex disc to control a lifting plate to periodically ascend and descend, the cathode bar, the anode bar and a water inlet pipe are inserted into the collecting pools to be subjected to electrolytic recycling, and precious metal is attached to the surface of the cathode bar. The equipment realizes integration of flue gas dispersion, spraying adsorption and electrolytic recovery, significantly improves the recovery rate of noble metals and reduces the risk of secondary pollution.

Description

Technical Field

[0001] The present invention relates to the technical field of flue gas treatment, and in particular to equipment and methods for purifying precious metals in industrial furnace flue gas and recycling them as resources. Background Art

[0002] In the industrial production process, especially in industrial kilns involving high-temperature smelting, roasting and other processes, the flue gas emitted often contains trace amounts of precious metal particles. These precious metals not only have significant economic value, but if they are directly discharged without treatment, it will not only lead to the waste of precious metal resources and the loss of their economic value, but may also cause serious pollution to the ecological environment. Therefore, how to efficiently purify flue gas and realize the recycling of precious metal resources has become a key technical problem that needs to be solved in the current industrial field.

[0003] At present, the purification of precious metals in flue gas from industrial kilns mainly adopts physical adsorption, chemical precipitation, electrolysis and other processes. However, in practical applications, these methods all have obvious limitations: for example, physical adsorption has adsorption capacity limitations, chemical precipitation is prone to produce secondary sludge, and electrolysis has high energy consumption, making it difficult to balance the overall purification efficiency and economy. In particular, the existing technology still lacks effective solutions for the uniform dispersion of precious metal particles in flue gas and the efficient contact with the purification liquid.

[0004] In addition, if the precious metal spray liquid generated during the operation of traditional flue gas purification equipment is directly discharged or simply disposed of without proper treatment, it will not only cause secondary loss of precious metal resources, but its residual pollutants may also cause secondary pollution risks to water or soil.

[0005] In response to the above problems, the present invention document proposes equipment and methods for purifying and recycling precious metals in industrial kiln flue gas. Summary of the invention

[0006] The purpose of the present invention is to solve the shortcomings of the existing flue gas that cannot fully react with the spray liquid and cannot effectively purify and recover the precious metals in the flue gas, and to propose an industrial kiln flue gas precious metal purification and resource utilization equipment and method.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] Industrial furnace flue gas precious metal purification equipment is used to purify and separate precious metals in flue gas, including a spray tower, the bottom of which is fixedly penetrated by an air inlet pipe, the top is fixedly connected to an exhaust pipe, and the bottom is provided with a collection pipe;

[0009] Purification structure, which consists of multiple groups of spray units arranged from top to bottom. Each group of spray units includes a rotating disk and a spray pipe located above it. The rotating disk is rotatably arranged in the spray tower and is provided with a plurality of exhaust holes, and a plurality of nozzles are provided at the bottom of the spray pipe;

[0010] Activated carbon layer, fixed in the spray tower and located above the purification structure;

[0011] Among them, after the flue gas enters the spray tower through the inlet pipe, it passes through the exhaust holes of the rotating disk in turn and is dispersed. The spray liquid is sprayed downward through the nozzles to contact the flue gas. The precious metal particles are captured by the spray liquid to form suspended substances or dissolved. The purified flue gas is discharged through the activated carbon layer after filtration, and the spray liquid is recycled through the collection pipe.

[0012] In a possible design, the top end of the inlet pipe extends into the spray tower and is rotatably connected to an exhaust disk. A plurality of arc-shaped grooves are circumferentially provided on the side wall of the exhaust disk, and an arc-shaped plate is fixed in each arc-shaped groove. When the flue gas is discharged through the arc-shaped grooves, it drives the exhaust disk to rotate, so that the flue gas is evenly diffused.

[0013] In a possible design, the spray liquid contains an alkaline solution or a chelating agent.

[0014] Resource utilization equipment, including the above-mentioned precious metal purification of industrial furnace flue gas, further includes:

[0015] Bottom plate, on the top of which a cylinder and a U-shaped frame are fixed. A collection box is rotatably arranged in the cylinder, and four collection pools are arranged in the collection box;

[0016] Drive shaft, rotatably connected to the top of the U-shaped frame and fixed to the collection box at the bottom end;

[0017] Conversion structure, including a lifting plate and a special-shaped convex disk sleeved on the outer wall of the drive shaft. The lifting plate is connected to a sliding plate through a connecting rod, and the sliding plate is matched with the special-shaped convex disk through a rolling wheel to realize lifting;

[0018] Electrolysis component, including a cathode rod and an anode rod penetrating through the lifting plate;

[0019] Inlet pipe, fixedly penetrating through the lifting plate and communicated with the spray pipe through a water pump.

[0020] In a possible design, four protrusions and grooves are provided on the outer wall of the special-shaped convex disk. When the drive shaft rotates, the rolling wheel is pushed by the protrusions to make the sliding plate move horizontally, and then the lifting plate is controlled to lift through the connecting rod, so that the cathode rod, the anode rod and the inlet pipe are periodically inserted into or separated from the collection pool.

[0021] In a possible design, a liquid inlet is provided on the side wall of the collection box, and the collection pipe penetrates through the cylinder and is dynamically sealed and connected to the liquid inlet, and the spray liquid is injected into the collection pool through the collection pipe.

[0022] In a possible design, it further includes a stripping structure, which includes:

[0023] A fixing plate, fixed to one side of the U-shaped frame and rotatably connected to the upper clamping seat and the reciprocating screw rod;

[0024] A collecting plate, slidably sleeved on the fixed rod and adjusted in height through a nut block;

[0025] A lifting mounting block, which is in screw-threaded groove fit with the reciprocating screw rod through a slider, and a cutter is fixed to one side thereof;

[0026] Wherein, the cathode rod is clamped between the upper clamping seat and the lower clamping seat, and the reciprocating screw rod rotates to drive the cutter to descend and strip the precious metal on the surface of the cathode rod.

[0027] In a possible design, the upper clamping seat and the reciprocating screw rod are in meshing transmission through a first gear and a second gear, and the diameter of the second gear is larger than that of the first gear, so that the rotation speed of the reciprocating screw rod is lower than that of the upper clamping seat.

[0028] In a possible design, a rotating rod is rotatably connected to the outside of the spray tower. The rotating rod is in meshing with a toothed ring through a third gear. A second magnet block is provided on the inner wall of the toothed ring, and a first magnet block is provided on the outer wall of the rotating disk. The magnetic attraction drives the rotating disk to rotate with the toothed ring; the rotating rod is in transmission connection with the upper clamping seat through a synchronous belt.

[0029] In this application, the usage method of the resource utilization equipment includes the following steps:

[0030] S1. The flue gas is injected into the spray tower through the inlet pipe. When passing through the exhaust disk, the exhaust disk is driven to rotate under the cooperation of the arc-shaped groove and the arc-shaped plate, so that the flue gas is evenly distributed in the spray tower; the flue gas drifts upward through the rotating disk, and multiple exhaust holes thereon further disperse the flue gas, facilitating the spray liquid sprayed by the nozzle to fully contact the flue gas, so that the precious metal particles in the flue gas are combined with water to form suspended substances or dissolved; the purified flue gas is further purified by the activated carbon layer and then discharged through the exhaust pipe;

[0031] S2. After the spray liquid adsorbs the precious metal particles, it is discharged into the collection pool through the collection pipe; when the spray liquid in the collection pool reaches a predetermined amount, the motor drives the drive shaft and the collection box to rotate 90°. During the rotation process, the liquid inlet of the collection box is misaligned with one end of the collection pipe, closing the collection pipe. When the collection pool rotates to the position of the collection pipe later, the two correspond, and the spray liquid is discharged into the collection pool again;

[0032] S3. When the drive shaft drives the collection box to rotate, the special-shaped convex disk is synchronously driven to rotate. Under the cooperation of the rolling wheel and the outer wall of the protruding part of the special-shaped convex disk, the sliding plate moves outward, driving the connecting rod to rotate, driving the lifting plate to move upward, so that the cathode rod, anode rod and water inlet pipe are separated from the original collection pool. When the new collection pool rotates to the corresponding position, the sliding plate moves towards the middle without the push of the special-shaped convex disk, and the lifting plate moves downward again, extending the cathode rod, anode rod and water inlet pipe into the new collection pool. Subsequently, the cathode rod and anode rod are energized to electrolyze the spraying liquid to separate precious metals, and the precious metals adhere to the cathode rod. Because the cathode rod, anode rod and water inlet pipe are symmetrically placed, after the collection box rotates 90°, the electrolyzed spraying liquid with adjusted pH value turns to the position of the water inlet pipe, and the water pump injects the spraying liquid into the spray pipe through the water inlet pipe to continue spraying the flue gas.

[0033] S4. After a large amount of precious metals adhere to the cathode rod, it is removed from the lifting plate and placed in the lower clamp seat. Rotating the nut block drives the collection plate to move upward, driving the cathode rod to move upward. The upper clamp seat and the lower clamp seat cooperate to clamp the cathode rod. The motor drives the reciprocating lead screw to rotate. Through the meshing transmission of the first gear and the second gear, the reciprocating lead screw drives the lifting mounting block and the tool to slowly descend. At the same time, the upper clamp seat drives the cathode rod to rotate, and the tool strips the precious metals on the cathode rod. The stripped materials fall into the collection tank for later collection.

[0034] S5. When the upper clamp seat and the reciprocating lead screw rotate to strip the precious metals, the upper clamp seat drives the rotating rod and the third gear to rotate through the synchronous pulley and the synchronous belt. The third gear drives the toothed ring to rotate. The toothed ring drives the rotating disk to rotate through the magnetic attraction of the second magnet block and the first magnet block, breaking up the flue gas passing through, making it further evenly distributed in the spray tower and fully contacting the spraying liquid.

[0035] Beneficial effects: In the present invention, the top end of the air inlet pipe is rotationally communicated with an exhaust disk, and a plurality of arc-shaped grooves are provided on the side wall of the exhaust disk for discharging the flue gas to the periphery of the exhaust disk. Arc-shaped plates are fixed in a plurality of the arc-shaped grooves. When the flue gas passes through the exhaust disk, under the cooperation of the arc-shaped grooves and the arc-shaped plates, the flue gas can drive the exhaust disk to rotate, so that the flue gas can be evenly distributed in the spray tower, facilitating the subsequent full contact between the spraying liquid and the flue gas.

[0036] In the present invention, two connecting rods are rotatably provided at the top of the lifting plate. The top ends of the two connecting rods are rotatably connected to a fixing plate. The two sliding plates are both slid on the inner wall of the top of the U-shaped frame. The mutually close ends of the two sliding plates are rotatably connected with rolling wheels. The drive shaft drives the special-shaped convex disk to rotate. The cooperation of the special-shaped convex disk with the sliding plate and the rolling wheel drives the lifting plate to lift and lower, placing the cathode rod and the anode rod in the newly collected spraying liquid for separating precious metals in the spraying liquid, avoiding waste of precious metals.

[0037] In the present invention, a collection plate is slidably sleeved on the outer wall of the fixed rod. A lower clamp seat is rotatably connected to the top of the collection plate. The lifting and mounting block is slidably sleeved on the outer wall of the fixed rod. The lifting and mounting block is in sliding cooperation with the spiral groove on the outer wall of the reciprocating lead screw through a slider. The nut block drives the collection plate to move upward. The collection plate drives the cathode rod to move upward through the lower clamp seat. The upper clamp seat and the lower clamp seat cooperate to clamp the cathode rod. The reciprocating lead screw and the upper clamp seat are meshed and driven through a first gear and a second gear. The reciprocating lead screw drives the lifting and mounting block and the tool to slowly descend. The tool can strip the precious metals attached to the cathode rod, automatically completing the collection of the metal.

[0038] In the present invention, during the flue gas purification process, the flue gas is fully dispersed, and the flue gas is distributed in the spray tower, which is convenient for the spray liquid to separate the precious metals in the flue gas. After separation, the precious metals in the spray liquid can be directly precipitated through electrolysis to complete the collection, avoiding waste of precious metals and realizing resource recycling. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a three-dimensional sectional structure diagram of the precious metal purification of industrial kiln flue gas provided by Embodiment 1 of the present invention;

[0040] Figure 2 It is a top sectional structure diagram of the exhaust disk of the precious metal purification of industrial kiln flue gas provided by Embodiment 1 of the present invention;

[0041] Figure 3 It is a three-dimensional structure diagram of the rotating disk and the nozzle of the precious metal purification of industrial kiln flue gas provided by Embodiment 1 of the present invention;

[0042] Figure 4 It is a three-dimensional structure diagram of the resource utilization equipment provided by Embodiment 1 of the present invention;

[0043] Figure 5 It is a three-dimensional structure diagram of the U-shaped frame, the cylinder and the fixing plate of the resource utilization equipment provided by Embodiment 1 of the present invention;

[0044] Figure 6 It is a three-dimensional sectional structure diagram of the cylinder and the collection box of the resource utilization equipment provided by Embodiment 1 of the present invention;

[0045] Figure 7 It is a three-dimensional sectional structure diagram of the U-shaped frame and the collection box of the resource utilization equipment provided by Embodiment 1 of the present invention.

[0046] Figure 8 It is a three-dimensional exploded structure diagram of the connecting rod, the special-shaped convex disk and the lifting plate of the resource utilization equipment provided by Embodiment 1 of the present invention;

[0047] Figure 9A three-dimensional sectional structure diagram of the fixing plate and the collecting plate of the resource utilization device provided in Embodiment 1 of the present invention;

[0048] Figure 10 A three-dimensional structure diagram of the resource utilization device provided in Embodiment 2 of the present invention;

[0049] Figure 11 A three-dimensional structure diagram of the toothed ring and the rotating rod of the resource utilization device provided in Embodiment 2 of the present invention;

[0050] Figure 12 A three-dimensional exploded structure diagram of the rotating disc and the toothed ring of the resource utilization device provided in Embodiment 2 of the present invention.

[0051] In the figure: 1. Spray tower; 2. Inlet pipe; 3. Exhaust disc; 4. Arc groove; 5. Arc plate; 6. Rotating disc; 7. Exhaust hole; 8. Spray pipe; 9. Nozzle; 10. Activated carbon layer; 11. Exhaust pipe; 12. Collection pipe; 13. Bottom plate; 14. Cylinder; 15. Collection box; 16. Collection pool; 17. Liquid inlet; 18. U-shaped frame; 19. Drive shaft; 20. Lifting plate; 21. Cathode rod; 22. Anode rod; 23. Water inlet pipe; 24. Water pump; 25. Special-shaped convex disc; 26. Sliding plate; 27. Rolling wheel; 28. Connecting rod; 29. Fixing plate; 30. Fixed rod; 31. Collecting plate; 32. Nut block; 33. Reciprocating lead screw; 34. Lifting mounting block; 35. Tool; 36. First gear; 37. Second gear; 38. Upper clamping seat; 39. Lower clamping seat; 40. Collection groove; 41. First magnet block; 42. Toothed ring; 43. Second magnet block; 44. Rotating rod; 45. Third gear. Detailed implementation manners

[0052] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0053] Embodiment 1: Refer to Figures 1 - 3 , metal purification, which relates to the technical field of flue gas treatment and is used for purifying and separating precious metals in flue gas. The device mainly includes a spray tower 1. The spray tower 1 serves as the main place for flue gas purification. An inlet pipe 2 is fixedly penetrated through the bottom inner wall thereof for injecting flue gas into the spray tower 1 for purification. A purification structure composed of multiple groups of spray structures is arranged in the spray tower 1 for purifying the flue gas entering the spray tower 1 multiple times. An activated carbon layer 10 is fixed above the purification structure for filtering the purified flue gas again. The top of the spray tower 1 is fixedly communicated with an exhaust pipe 11 for discharging the purified and filtered flue gas; the bottom of the spray tower 1 is fixedly communicated with a collection pipe 12 for recovering the spray liquid sprayed by the spray structure.

[0054] Reference Figure 1 , the flue gas purified by the purification structure continues to move upward and passes through the activated carbon layer 10. The activated carbon layer 10 has good adsorption performance and can further adsorb the impurities and odors that may remain in the flue gas, and purify the flue gas again. The flue gas purified by the activated carbon layer 10 meets the emission standards and is discharged into the atmosphere through the exhaust pipe 11.

[0055] Reference Figure 1 and Figure 2 , the top end of the intake pipe 2 extends into the spray tower 1 and is located below the purification structure. The top end of the intake pipe 2 is rotationally connected to an exhaust disk 3. A plurality of arc-shaped grooves 4 are provided on the side wall of the exhaust disk 3. The function of the arc-shaped grooves 4 is to discharge the flue gas to the periphery of the exhaust disk 3. Arc-shaped plates 5 are fixed in a plurality of arc-shaped grooves 4. When the flue gas enters the exhaust disk 3 from the intake pipe 2 and is discharged from the arc-shaped grooves 4, the flue gas impacts the arc-shaped plates 5. Due to the cooperation of the arc-shaped grooves 4 and the arc-shaped plates 5, a reaction force will be generated, thereby driving the exhaust disk 3 to rotate. The rotation of the exhaust disk 3 enables the flue gas to be evenly distributed in the spray tower 1, providing good conditions for the subsequent purification process.

[0056] Reference Figure 1 and Figure 3 , the purification structure includes a rotating disk 6 and a spray pipe 8. The rotating disk 6 is rotatably arranged in the spray tower 1. A plurality of arc-shaped sliders are provided at the bottom of the rotating disk 6, and the rotating disk 6 is slidably matched with the annular slide rail in the spray tower 1 through the arc-shaped sliders for enabling the rotating disk 6 to rotate stably. A plurality of exhaust holes 7 are provided in the rotating disk 6. When the flue gas is discharged from the exhaust disk 3, it drifts upward and passes through the rotating disk 6. The plurality of exhaust holes 7 provided in the rotating disk 6 can further disperse the flue gas in the spray tower 1.

[0057] Among them, the rotating disk 6 can be designed in the following forms: 1. Wavy sieve plate: The exhaust holes 7 are distributed in a staggered manner along the wavy curved surface. When the flue gas passes through, turbulence is generated by the curved surface diversion, extending the residence time; 2. Honeycomb composite disk: Adopting a double-layer ceramic honeycomb structure, the upper layer has round holes with a diameter of 2 mm, and the lower layer has hexagonal holes with a side length of 1 mm, realizing the hierarchical diffusion of the flue gas.

[0058] The spray pipe 8 is fixed inside the spray tower 1 and above the rotating disk 6. Multiple nozzles 9 are fixed to the bottom of the spray pipe 8. The spray pipe 8 is connected to an external spray liquid supply system through a pipeline. The spray liquid can be a solution containing specific chemical substances, such as alkaline substances like sodium hydroxide (NaOH), calcium hydroxide (Ca(OH)2), chelating agents, oxidants, reductants, and heavy metal flocculants, etc., to enhance the adsorption or reaction ability for precious metals. The nozzles 9 spray the spray liquid downward. Since the flue gas has been further dispersed by the rotating disk 6, the spray liquid can fully contact the flue gas. The precious metal particles in the flue gas combine with water to form suspended substances or dissolve in water, thereby achieving the purification of the flue gas.

[0059] Reference Figure 1 , after the spray liquid sprayed by the nozzles 9 on the spray pipe 8 comes into contact with the flue gas, it will carry substances such as precious metals in the flue gas and fall. The collection pipe 12 at the bottom of the spray tower 1 recovers this spray liquid. The collection pipe 12 is connected to an external recovery and treatment system. The recovered spray liquid can be further processed, such as separating valuable substances such as precious metals, to achieve the recycling of resources.

[0060] Through the above specific implementation manners, the precious metal purification equipment for industrial furnace flue gas can effectively purify and separate precious metals in the flue gas. The cooperation of the air inlet pipe 2 and the exhaust disk 3 evenly distributes the flue gas in the spray tower 1, providing good initial conditions for the purification process. The rotating disk 6 and the spray pipe 8 in the purification structure enable the flue gas to fully contact the spray liquid, improving the purification efficiency. The activated carbon layer 10 further ensures the quality of the discharged gas. The recovery and treatment of the spray liquid realizes the recycling of resources, reduces the production cost, and at the same time reduces the environmental pollution.

[0061] Refer to Figure 5 and Figure 6 , a resource utilization device, which relates to the technical field of flue gas treatment. This resource utilization device includes a bottom plate 13. The bottom plate 13 serves as the support foundation for the entire device, and a cylinder 14 and a U-shaped frame 18 are fixedly installed on its top. A collection box 15 is arranged inside the cylinder 14 through a rotating structure (such as a conventional rotating connection method like a bearing). Four collection pools 16 are provided inside the collection box 15 for respectively collecting spray liquid at different stages. The top inner wall of the U-shaped frame 18 is connected to a driving shaft 19 through a rotating connection method such as a bearing. The bottom end of the driving shaft 19 is fixedly connected to the top of the collection box 15. By rotating the driving shaft 19, the collection box 15 can be driven to rotate inside the cylinder 14.

[0062] Refer to Figure 7 and Figure 8, the U-shaped frame 18 is provided with an electrolysis component and a water inlet pipe 23, and the electrolysis component and the water inlet pipe 23 are symmetrically arranged. The electrolysis component is composed of a cathode rod 21 and an anode rod 22. Both the cathode rod 21 and the anode rod 22 penetrate through the lifting plate 20, and fixed retaining rings are fixedly sleeved on the outer walls of the cathode rod 21 and the anode rod 22. The cathode rod 21 and the anode rod 22 are stably placed on the lifting plate 20 through the fixed retaining rings. The cathode rod 21 and the anode rod 22 are connected to the positive and negative electrodes of an external power supply through wires for electrolyzing the spraying liquid. The water inlet pipe 23 also fixedly penetrates through the lifting plate 20, and the electrolysis component and the water inlet pipe 23 can extend into the corresponding collection pool 16.

[0063] Referring to Figure 3 , Figure 7 and Figure 8 , a conversion structure is provided between the U-shaped frame 18 and the collection box 15. The conversion structure includes a lifting plate 20 sleeved on the outer wall of the driving shaft 19 and a special-shaped convex disc 25 fixedly sleeved on the outer wall of the driving shaft 19. Two connecting rods 28 are rotatably connected to the top of the lifting plate 20. The two connecting rods 28 are distributed on both sides of the driving shaft 19. The tops of the two connecting rods 28 are rotatably connected to a sliding plate 26. Both sliding plates 26 are slidably connected to the inner wall of the top of the U-shaped frame 18 (the sliding connection can be realized by arranging a slide rail on the inner wall of the top of the U-shaped frame 18 and arranging a slider on the sliding plate 26 that cooperates with the slide rail). Rotating wheels 27 are rotatably connected to one end of the two sliding plates 26 close to each other, and the rotating wheels 27 cooperate with the special-shaped convex disc 25. A water pump 24 is fixed to the top of the U-shaped frame 18 through a frame. The liquid inlet end of the water pump 24 is fixedly communicated with the top end of the water inlet pipe 23 through a hose. The liquid outlet end of the water pump 24 is fixed with a liquid outlet hose, and the liquid outlet hose is divided into two parts and fixedly communicated with the two spraying pipes 8.

[0064] Specifically, when it is necessary to electrolyze the spraying liquid in the collection pool 16, the driving shaft 19 drives the collection box 15 to rotate, and synchronously drives the special-shaped convex disc 25 to rotate. During the rotation of the special-shaped convex disc 25, the sliding plate 26 moves outward under the cooperation of the rotating wheel 27 and the outer wall of the protruding part of the special-shaped convex disc 25. The sliding plate 26 drives the connecting rod 28 to rotate and drives the lifting plate 20 to move upward until the cathode rod 21, the anode rod 22 and the water inlet pipe 23 are separated from the corresponding collection pool 16.

[0065] When the new collection pool 16 rotates to the corresponding position (that is, the collection pool 16 that previously collected the spraying liquid rotates below the electrolysis component and the water inlet pipe 23), the sliding plate 26 moves toward the middle without the push of the special-shaped convex disc 25, and then the lifting plate 20 can be moved downward again, extending the cathode rod 21, the anode rod 22 and the water inlet pipe 23 into the corresponding collection pool 16 again. Then, the cathode rod 21 and the anode rod 22 are energized to electrolyze the spraying liquid, separating the precious metals in the spraying liquid, and the precious metals adhere to the cathode rod 21.

[0066] Since the cathode rod 21, the anode rod 22 and the water inlet pipe 23 are symmetrically arranged, when the collection box 15 rotates 90°, the previously electrolyzed spray liquid rotates to the position of the water inlet pipe 23 after the pH value is adjusted by adding electrolyte components. At this time, the water pump 24 is started, and the spray liquid in the corresponding collection tank 16 is pumped out through the water inlet pipe 23 and injected into the spray pipe 8 through the liquid outlet hose to continue the flue gas spraying, realizing the recycling of the spray liquid.

[0067] Refer to Figure 5 and Figure 9 As shown in FIGS.

[0068] Refer to Figure 9 , a stripping structure is provided on one side of the U-shaped frame 18. The stripping structure includes a lifting mounting block 34 and a cutter 35 fixed on one side thereof. A fixing plate 29 is fixed on one side of the U-shaped frame 18, and the fixing plate 29 provides a support basis for the entire stripping structure. A top clamp 38 and a reciprocating lead screw 33 are rotatably penetrated through the fixing plate 29, and the top clamp 38 and the reciprocating lead screw 33 can rotate freely within the fixing plate 29. A fixing rod 30 is fixed to the bottom of the fixing plate 29, and a chute is provided on the outer wall of the fixing rod 30. The collecting plate 31 is slidably sleeved on the outer wall of the fixing rod 30 through a slider engaged with the chute on the outer wall of the fixing rod 30. The collecting plate 31 can slide up and down on the fixing rod 30.

[0069] Refer to Figure 9 , the top of the collecting plate 31 is rotatably connected to a bottom clamp 39, and the bottom clamp 39 cooperates with the top clamp 38 to clamp the cathode rod 21. An external thread is provided at the bottom end of the outer wall of the fixing rod 30, and the fixing rod 30 is threadedly connected with a nut block 32 through the external thread, and the nut block 32 is located at the bottom of the collecting plate 31. When the nut block 32 is rotated, since the nut block 32 is threadedly connected with the fixing rod 30, the nut block 32 will move up and down along the fixing rod 30, thereby driving the collecting plate 31 to move up or down.

[0069] Refer to Figure 9 , the bottom end of the reciprocating lead screw 33 penetrates through the collecting plate 31, and this design can increase the rotational stability of the reciprocating lead screw 33. The lifting mounting block 34 is slidably sleeved on the outer wall of the fixing rod 30, and the lifting mounting block 34 is slidably engaged with the spiral groove on the outer wall of the reciprocating lead screw 33 through a slider. When the reciprocating lead screw 33 rotates, the lifting mounting block 34 can be driven to reciprocate up and down through the cooperation of the slider and the spiral groove.

[0070] Refer to Figure 9 , a first gear 36 and a second gear 37 are respectively and fixedly sleeved on the outer walls of the top clamp 38 and the reciprocating lead screw 33 above the fixing plate 29, and the first gear 36 and the second gear 37 are meshed with each other. The diameter of the second gear 37 is larger than that of the first gear 36, and the rotational speed ratio of the top clamp 38 and the reciprocating lead screw 33 can be adjusted through this gear meshing method. A collecting groove 40 is provided at the top of the collecting plate 31 for collecting the stripped metal.

[0071] In the actual operation process, first, the cathode rod 21 is taken out from the lifting plate 20 and placed in the lower clamping seat 39. Then, the nut block 32 is rotated, and the nut block 32 moves upward along the fixed rod 30, driving the collection plate 31 to move upward. The collection plate 31 drives the cathode rod 21 to move upward through the lower clamping seat 39, so that the top end of the cathode rod 21 extends into the upper clamping seat 38. At this time, the upper clamping seat 38 and the lower clamping seat 39 cooperate to clamp the cathode rod 21. Since the outer diameter of the cathode rod 21 remains unchanged, the tool 35 fits against the outer wall of the cathode rod 21. Then, the motor is started, and the motor drives the reciprocating lead screw 33 to rotate. The reciprocating lead screw 33 is meshed and driven with the upper clamping seat 38 through the first gear 36 and the second gear 37. Since the diameter of the second gear 37 is larger than the diameter of the first gear 36, the reciprocating lead screw 33 drives the lifting mounting block 34 and the tool 35 to slowly descend, while the upper clamping seat 38 synchronously drives the cathode rod 21 to rotate. During the descending process of the tool 35, the precious metals attached to the cathode rod 21 are peeled off, and the peeled precious metals fall into the collection tank 40, which is convenient for later collection.

[0072] Refer to Figure 6 , a plurality of liquid inlets 17 are provided in the collection box 15, and the liquid inlets 17 are communicated with the collection pool 16. One end of the collection pipe 12 is fixedly penetrated through the cylinder 14 and abuts against the outer wall of the collection box 15 through a sealing ring. When the collection box 15 rotates, the collection pipe 12 is misaligned with the liquid inlet 17, which can avoid leakage of the collection pipe 12. When the collection pipe 12 corresponds to the liquid inlet 17, the collected spraying liquid can be injected into the collection pool 16 through the collection pipe 12.

[0073] Refer to Figure 8 , four protrusions and four grooves are provided on the outer wall of the special-shaped convex disk 25. When the special-shaped convex disk 25 rotates, its protrusions and grooves cooperate with the rolling wheels 27, which can drive the sliding plate 26 to move horizontally back and forth. Furthermore, when the collection box 15 rotates, the lifting plate 20 is controlled to lift and lower, avoiding the cathode rod 21, the anode rod 22 and the water inlet pipe 23 from hindering the rotation of the collection box 15.

[0074] Example 2: Refer to Figures 10 - 12, improved on the basis of Example 1, one side of the spray tower 1 is rotatably connected with a rotating rod 44 through a base, and the outer wall fixed sleeve of the rotating rod 44 is provided with a plurality of third gears 45. The outer wall rotating sleeve of the spray tower 1 is provided with a plurality of gear rings 42, and the bottom of the gear ring 42 is provided with a plurality of arc-shaped sliders, and the gear ring 42 is slidably matched with the annular slide rail of the outer wall of the spray tower 1 through the arc-shaped sliders, so as to make the gear ring 42 rotate stably, the gear ring 42 is meshed with the adjacent third gear 45, and the gear ring 42 and the corresponding rotating disk 6 are in the same horizontal plane. The inner wall of the gear ring 42 is fixedly embedded with a plurality of second magnet blocks 43, and the outer wall of the rotating disk 6 is fixedly embedded with a plurality of first magnet blocks 41, and a magnetic attraction is generated between the second magnet blocks 43 and the first magnet blocks 41, so that the gear ring 42 can drive the rotating disk 6 to rotate. The rotating rod 44 is connected to the upper clamp seat 38 through a synchronous wheel and a synchronous belt transmission.

[0075] When the upper clamping seat 38 and the reciprocating screw rod 33 rotate to strip the precious metal on the outer wall of the cathode rod 21, the upper clamping seat 38 drives the rotating rod 44 and the third gear 45 to rotate through the synchronous wheel and the synchronous belt. The third gear 45 drives the gear ring 42 to rotate, and the gear ring 42 drives the rotating disk 6 to rotate through the magnetic attraction between the second magnet block 43 and the first magnet block 41. The rotating rotating disk 6 can break up the passing smoke and evenly distribute the smoke in the spray tower 1, so that the smoke is fully in contact with the spray liquid, thereby improving the spray effect.

[0076] Through the above specific implementation methods, the resource utilization equipment can realize the stripping and collection of precious metals on the cathode rod, while ensuring sufficient contact between the flue gas and the spray liquid in the spray tower, thereby improving the efficiency and quality of resource utilization.

[0077] The method for using the resource utilization equipment comprises the following steps:

[0078] S1. The flue gas is injected into the spray tower 1 through the air inlet pipe 2. When the flue gas passes through the exhaust disk 3, the flue gas can drive the exhaust disk 3 to rotate under the cooperation of the arc groove 4 and the arc plate 5, so that the flue gas can be evenly dispersed in the spray tower 1. The flue gas floats upward through the rotating disk 6, and the multiple exhaust holes 7 arranged in the rotating disk 6 can further disperse the flue gas in the spray tower 1, so that the spray liquid sprayed by the nozzle 9 in the later stage can fully contact with the flue gas. The precious metal particles in the flue gas combine with water to form a suspension or dissolve in water (a solution containing specific chemical substances is used in the spray tower 1 to enhance the adsorption or reaction ability of the precious metals. These specific chemical substances can be alkaline substances such as sodium hydroxide (NaOH), calcium hydroxide (Ca(OH)2), chelating agents, oxidants, reducing agents and heavy metal flocculants, which are not limited here). The purified flue gas moves upward through the activated carbon layer 10 for further purification and is discharged through the exhaust pipe 11;

[0079] S2. After the spray liquid adsorbs the precious metal particles in the flue gas, it is discharged into the corresponding collection pool 16 through the collection pipe 12. When the spray liquid in the collection pool 16 reaches a predetermined amount, the drive shaft 19 and the collection box 15 are rotated 90° by the motor drive. When the collection box 15 rotates, the liquid inlet 17 is misaligned with one end of the collection pipe 12 to seal the collection pipe 12. When the subsequent collection pool 16 rotates to the position of the collection pipe 12, the collection pipe 12 corresponds to the liquid inlet 17, and thus the spray liquid can be discharged back into the collection pool 16;

[0080] S3. When the drive shaft 19 drives the collection box 15 to rotate, the special-shaped convex disk 25 is synchronously driven to rotate. The sliding plate 26 moves outward under the cooperation of the rolling wheel 27 and the outer wall of the protruding part of the special-shaped convex disk 25. The sliding plate 26 drives the connecting rod 28 to rotate and drives the lifting plate 20 to move upward until the cathode rod 21, the anode rod 22, and the water inlet pipe 23 are separated from the corresponding collection pool 16. When the new collection pool 16 rotates to the corresponding position, the sliding plate 26 moves toward the middle without the push of the special-shaped convex disk 25, and thus the lifting plate 20 can move downward again, extending the cathode rod 21, the anode rod 22, and the water inlet pipe 23 back into the corresponding collection pool 16 (the collection pool 16 that collected the spray liquid before). Then, the cathode rod 21 and the anode rod 22 are energized to electrolyze the spray liquid to separate the precious metals in the spray liquid, and the precious metals adhere to the cathode rod 21. Since the cathode rod 21, the anode rod 22, and the water inlet pipe 23 are symmetrically arranged, when the collection box 15 rotates 90°, the previously electrolyzed spray liquid rotates to the position of the water inlet pipe 23 after adjusting the pH value by adding electrolyte components, and the water pump 24 injects the spray liquid in the corresponding collection pool 16 into the spray pipe 8 through the water inlet pipe 23 to continue the flue gas spraying;

[0081] S4. In addition, after a large amount of precious metals adhere to the cathode rod 21, these precious metals need to be stripped. At this time, the cathode rod 21 is taken out from the lifting plate 20 and placed in the lower clamp seat 39. The nut block 32 is rotated to drive the collection plate 31 to move upward. The collection plate 31 drives the cathode rod 21 to move upward through the lower clamp seat 39, and the top end of the cathode rod 21 extends into the upper clamp seat 38. The upper clamp seat 38 and the lower clamp seat 39 cooperate to clamp the cathode rod 21. Since the outer diameter of the cathode rod 21 remains unchanged, the tool 35 fits the outer wall of the cathode rod 21. Then, the motor drives the reciprocating lead screw 33 to rotate. The reciprocating lead screw 33 and the upper clamp seat 38 are meshed and driven by the first gear 36 and the second gear 37. Therefore, the reciprocating lead screw 33 drives the lifting mounting block 34 and the tool 35 to slowly descend, and the upper clamp seat 38 synchronously drives the cathode rod 21 to rotate. The tool 35 can strip the precious metals attached to the cathode rod 21, and the stripped precious metals fall into the collection groove 40 for convenient later collection;

[0082] S5. When the upper clamping seat 38 and the reciprocating screw rod 33 rotate to strip the precious metal on the outer wall of the cathode rod 21, the upper clamping seat 38 drives the rotating rod 44 and the third gear 45 to rotate through the synchronous pulley and the synchronous belt. The third gear 45 drives the toothed ring 42 to rotate. The toothed ring 42 drives the rotating disc 6 to rotate through the magnetic attraction force between the second magnet block 43 and the first magnet block 41. Furthermore, the rotating rotating disc 6 can disperse the passing flue gas, further distributing the flue gas in the spray tower 1 and enabling the flue gas to fully contact the spray liquid.

[0083] The accompanying drawings in this application are only for illustrative purposes. The dimensions and shapes of the components shown therein are not actually limited, but only for an illustrative representation. During the actual implementation process, the components can be reasonably configured and adjusted according to specific requirements and actual situations.

[0084] The above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes, should be covered by the protection scope of the present invention.

Claims

1. Industrial furnace flue gas precious metal purification equipment, which is used to purify and separate precious metals in flue gas, is characterized in that, It includes a spray tower (1) with an air inlet pipe (2) fixedly penetrating through its bottom, an exhaust pipe (11) fixedly connected to its top, and a collection pipe (12) provided at the bottom; A purification structure, which consists of multiple groups of spray units arranged from top to bottom. Each group of spray units includes a rotating disk (6) and a spray pipe (8) located above it. The rotating disk (6) is rotatably arranged in the spray tower (1) and is provided with a plurality of exhaust holes (7). The bottom of the spray pipe (8) is provided with a plurality of nozzles (9); An activated carbon layer (10), which is fixed in the spray tower (1) and is located above the purification structure; Among them, after the flue gas enters the spray tower (1) through the air inlet pipe (2), it successively passes through the exhaust holes (7) of the rotating disk (6) and is dispersed. The spray liquid is sprayed downward through the nozzles (9) to contact the flue gas. The precious metal particles are captured by the spray liquid to form suspended substances or dissolved. The purified flue gas is filtered by the activated carbon layer (10) and then discharged through the exhaust pipe (11). The spray liquid is recovered through the collection pipe (12).

2. The precious metal purification equipment for industrial furnace flue gas according to claim 1, characterized in that, The top end of the air inlet pipe (2) extends into the spray tower (1) and is rotatably connected to an exhaust disk (3). The side wall of the exhaust disk (3) is circumferentially provided with a plurality of arc-shaped grooves (4). Each arc-shaped groove (4) is fixed with an arc-shaped plate (5). When the flue gas is discharged through the arc-shaped grooves (4), it drives the exhaust disk (3) to rotate, so that the flue gas is evenly diffused.

3. The precious metal purification equipment for industrial furnace flue gas according to claim 2, characterized in that, The spray liquid contains an alkaline solution or a chelating agent.

4. A resource utilization device, including the industrial furnace flue gas noble metal purification described in claim 3, wherein It also includes: A bottom plate (13), on the top of which a cylinder (14) and a U-shaped frame (18) are fixed. A collection box (15) is rotatably arranged in the cylinder (14), and four collection pools (16) are arranged in the collection box (15); A drive shaft (19), which is rotatably connected to the top of the U-shaped frame (18) and the bottom end is fixed to the collection box (15); A conversion structure, which includes a lifting plate (20) and a special-shaped convex disk (25) sleeved on the outer wall of the drive shaft (19). The lifting plate (20) is connected to a sliding plate (26) through a connecting rod (28), and the sliding plate (26) is matched with the special-shaped convex disk (25) through a rolling wheel (27) to realize lifting; An electrolysis component, which includes a cathode rod (21) and an anode rod (22) penetrating through the lifting plate (20); A water inlet pipe (23), which is fixedly penetrating through the lifting plate (20) and is communicated with the spray pipe (8) through a water pump (24).

5. The resource utilization device according to claim 4, characterized in that, The outer wall of the special-shaped convex disk (25) is provided with four protrusions and grooves. When the drive shaft (19) rotates, it pushes the rolling wheel (27) through the protrusions to make the sliding plate (26) move horizontally, and then controls the lifting of the lifting plate (20) through the connecting rod (28), so that the cathode rod (21), the anode rod (22) and the water inlet pipe (23) are periodically inserted into or separated from the collection pool (16).

6. The resource utilization device according to claim 5, characterized in that A liquid inlet (17) is provided on the side wall of the collection box (15). The collection pipe (12) penetrates through the cylinder (14) and is dynamically sealed and connected to the liquid inlet (17). The spray liquid is injected into the collection pool (16) through the collection pipe (12).

7. The resource utilization device according to claim 6, characterized in that, It also includes a stripping structure, which includes: A fixing plate (29), which is fixed on one side of the U-shaped frame (18) and is rotatably connected to an upper clamp seat (38) and a reciprocating lead screw (33); A collection plate (31), which is slidably sleeved on a fixed rod (30) and adjusts its height through a nut block (32); The lifting and mounting block (34) is in screw-thread engagement with the spiral groove of the reciprocating lead screw (33) through a slider, and a tool (35) is fixed to one side thereof; Among them, the cathode rod (21) is clamped between the upper clamp seat (38) and the lower clamp seat (39), and the rotation of the reciprocating lead screw (33) drives the tool (35) to descend and strip the precious metal on the surface of the cathode rod (21).

8. The resource utilization device according to claim 7, characterized in that The upper clamp seat (38) and the reciprocating lead screw (33) are in meshing transmission through the first gear (36) and the second gear (37). The diameter of the second gear (37) is larger than that of the first gear (36), so that the rotation speed of the reciprocating lead screw (33) is lower than that of the upper clamp seat (38).

9. The resource utilization device according to claim 8, characterized in that, The outer side of the spray tower (1) is rotatably connected with a rotating rod (44). The rotating rod (44) is in meshing engagement with a toothed ring (42) through a third gear (45). A second magnet block (43) is provided on the inner wall of the toothed ring (42), and a first magnet block (41) is provided on the outer wall of the rotating disk (6). The magnetic attraction drives the rotating disk (6) to rotate along with the toothed ring (42); the rotating rod (44) is in transmission connection with the upper clamp seat (38) through a synchronous belt.

10. A method of using a resource utilization device, applied to the resource utilization device described in claim 9, characterized in that, It includes the following steps: S1. The flue gas is injected into the spray tower (1) through the inlet pipe (2). When passing through the exhaust disk (3), the exhaust disk (3) is driven to rotate under the cooperation of the arc-shaped groove (4) and the arc-shaped plate (5), so that the flue gas is evenly dispersed in the spray tower (1); the flue gas drifts upward through the rotating disk (6), and multiple exhaust holes (7) thereon further disperse the flue gas, facilitating the full contact between the spray liquid sprayed by the spray head (9) and the flue gas, so that the precious metal particles in the flue gas are combined with water to form suspended substances or dissolve; the purified flue gas is further purified by the activated carbon layer (10) and then discharged through the exhaust pipe (11); S2. After the spray liquid adsorbs the precious metal particles, it is discharged into the collection pool (16) through the collection pipe (12); when the spray liquid in the collection pool (16) reaches a predetermined amount, the motor drives the drive shaft (19) and the collection box (15) to rotate by 90°. During the rotation, the liquid inlet (17) of the collection box (15) is misaligned with one end of the collection pipe (12), closing the collection pipe (12). When the subsequent collection pool (16) rotates to the position of the collection pipe (12), they correspond to each other, and the spray liquid is re-discharged into the collection pool (16); S3. When the drive shaft (19) drives the collection box (15) to rotate, the special-shaped convex disk (25) is synchronously driven to rotate. Under the cooperation of the rolling wheel (27) and the outer wall of the protruding part of the special-shaped convex disk (25), the sliding plate (26) moves outward, driving the connecting rod (28) to rotate, driving the lifting plate (20) to move upward, so that the cathode rod (21), the anode rod (22) and the water inlet pipe (23) are separated from the original collection pool (16). When the new collection pool (16) rotates to the corresponding position, the sliding plate (26) moves toward the middle without the push of the special-shaped convex disk (25), and the lifting plate (20) moves downward again, extending the cathode rod (21), the anode rod (22) and the water inlet pipe (23) into the new collection pool (16). Subsequently, the cathode rod (21) and the anode rod (22) are energized to electrolyze the spraying liquid to separate precious metals, and the precious metals adhere to the cathode rod (21). Because the cathode rod (21), the anode rod (22) and the water inlet pipe (23) are symmetrically placed, after the collection box (15) rotates 90°, the electrolyzed and pH-adjusted spraying liquid rotates to the position of the water inlet pipe (23), and the water pump (24) injects the spraying liquid into the spraying pipe (8) through the water inlet pipe (23) to continue spraying the flue gas. S4. After a large amount of precious metals adhere to the cathode rod (21), it is removed from the lifting plate (20) and placed in the lower clamp seat (39). Rotating the nut block (32) drives the collection plate (31) to move upward, driving the cathode rod (21) to move upward, and the upper clamp seat (38) and the lower clamp seat (39) cooperate to clamp the cathode rod (21). The motor drives the reciprocating lead screw (33) to rotate. Through the meshing transmission of the first gear (36) and the second gear (37), the reciprocating lead screw (33) drives the lifting and mounting block (34) and the tool (35) to slowly descend. At the same time, the upper clamp seat (38) drives the cathode rod (21) to rotate, and the tool (35) strips the precious metals on the cathode rod (21), and the stripped matter falls into the collection tank (40) for later collection. S5. When the upper clamp seat (38) and the reciprocating lead screw (33) rotate to strip the precious metals, the upper clamp seat (38) drives the rotating rod (44) and the third gear (45) to rotate through the synchronous pulley and the synchronous belt. The third gear (45) drives the toothed ring (42) to rotate. The toothed ring (42) drives the rotating disk (6) to rotate through the magnetic attraction of the second magnet block (43) and the first magnet block (41), breaking up the passing flue gas and making it further evenly distributed in the spray tower (1) to fully contact the spraying liquid.

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