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

Abstract

Industrial kiln flue gas noble metal purification and resource utilization equipment and method, belong to flue gas treatment technical field. In view of the problems of low purification efficiency, difficult recovery of noble metal, secondary pollution of spray liquid in prior art, the equipment is composed of spray tower and resource utilization device: the exhaust disc and multilayer rotating disc are arranged in the spray tower, the flue gas is driven to rotate by arc groove to realize preliminary dispersion, and then dispersed again through the rotating disc exhaust hole, combined with the alkaline solution or chelating agent sprayed by the spray pipe, the purified flue gas is filtered by activated carbon layer and discharged. The resource utilization device includes a rotatable collection box, four collection pools are arranged in the collection box to alternately receive the spray liquid, a special-shaped convex disc is driven by a driving shaft to control the periodic lifting of the lifting plate, so that the cathode rod, anode rod and water inlet pipe are inserted into the collection pool for electrolysis recovery, and the noble metal is attached to the surface of the cathode rod. The equipment realizes the integration of flue gas dispersion, spray adsorption and electrolysis recovery, significantly improves the recovery rate of noble metal and reduces the risk of secondary pollution.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of flue gas treatment, in particular to an industrial kiln flue gas noble metal purification and resource utilization equipment and method. BACKGROUND

[0002] In the industrial production process, especially the industrial kiln involving high-temperature smelting, calcination and other processes, the flue gas emitted by the industrial kiln often contains trace amounts of noble metal particles. These noble metals not only have significant economic value, but if not treated directly discharged, not only will result in the waste of noble metal resources, the loss of economic value, but also may cause serious pollution to the ecological environment. Therefore, how to efficiently purify flue gas and realize the resource recovery of noble metals has become a key technical problem to be solved in the current industrial field.

[0003] Currently, the industrial kiln flue gas noble metal purification mainly adopts physical adsorption method, chemical precipitation method, electrolysis method and other processes. However, in practical application, these methods all have obvious limitations: for example, the physical adsorption method has adsorption capacity limitation, the chemical precipitation method is easy to produce secondary sludge, the electrolysis method has high energy consumption, resulting in the difficulty in balancing the overall purification efficiency and economy. Especially for the uniform dispersion of noble metal particles in flue gas and the efficient contact with the purification liquid, the existing technology still lacks effective solutions.

[0004] In addition, the noble metal-containing spray liquid generated during the operation of the traditional flue gas purification equipment, if not properly treated and directly discharged or simply disposed, not only will cause the secondary loss of noble metal resources, but also the residual pollutants may cause the risk of secondary pollution of water bodies or soil.

[0005] In view of the above problems, the present application provides an industrial kiln flue gas noble metal purification and resource utilization equipment and method. SUMMARY

[0006] The purpose of the present application is to solve the problems that the existing flue gas cannot be fully reacted with the spray liquid and the noble metal in the flue gas cannot be effectively purified and recovered, and an industrial kiln flue gas noble metal purification and resource utilization equipment and method are provided.

[0007] In order to achieve the above purpose, the present application adopts the following technical scheme:

[0008] The industrial kiln flue gas noble metal purification equipment is used for purifying and separating the noble metal in the flue gas, comprising a spray tower, a gas inlet pipe is fixedly penetrated at the bottom of the spray tower, an exhaust pipe is fixedly communicated at the top of the spray tower, and a collection pipe is arranged at the bottom of the spray tower;

[0009] The purification structure is composed of multiple groups of spraying units arranged from top to bottom, each group of spraying units comprising a rotating disc and a spraying pipe above the rotating disc, the rotating disc being rotatably arranged in the spraying tower and having multiple exhaust holes, and the spraying pipe having multiple nozzles at the bottom thereof;

[0010] The active carbon layer is fixed in the spraying tower and above the purification structure.

[0011] The flue gas enters the spraying tower through the air inlet pipe, is dispersed through the exhaust holes of the rotating disc in sequence, the spraying liquid is sprayed downward through the nozzles to contact the flue gas, the noble metal particles are captured by the spraying liquid to form suspensions or are dissolved, the purified flue gas is filtered through the active carbon layer and is discharged through the air outlet pipe, and the spraying liquid is recycled through the collecting pipe.

[0012] In a possible design, the top end of the air inlet pipe extends into the spraying tower and is rotatably connected to an exhaust disc, the sidewall of the exhaust disc is circumferentially provided with multiple arc-shaped grooves, each arc-shaped groove is fixed with an arc-shaped plate, and the flue gas drives the exhaust disc to rotate when being discharged through the arc-shaped grooves, so that the flue gas is uniformly diffused.

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

[0014] The resource utilization equipment comprises the industrial kiln flue gas noble metal purification device and further comprises:

[0015] The bottom plate has a cylinder and a U-shaped frame fixed to the top thereof, the cylinder is rotatably provided with a collecting box inside, and the collecting box is provided with four collecting pools.

[0016] The driving shaft is rotatably connected to the top of the U-shaped frame and is fixed to the bottom end of the collecting box.

[0017] The conversion structure comprises a lifting plate and a special-shaped convex disc which are sleeved on the outer wall of the driving 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 disc through a rolling wheel to realize lifting.

[0018] The electrolysis member comprises a cathode rod and an anode rod which penetrate through the lifting plate.

[0019] The water inlet pipe is fixed to penetrate through the lifting plate and is communicated with the spraying pipe through a water pump.

[0020] In a possible design, the outer wall of the special-shaped convex disc is provided with four protrusions and grooves, the driving shaft rotates to push the rolling wheel through the protrusions to make the sliding plate move laterally, and then the lifting plate is controlled to lift through the connecting rod, so that the cathode rod, the anode rod and the water inlet pipe are periodically inserted into or separated from the collecting pools.

[0021] In a possible design, the sidewall of the collecting box is provided with a liquid inlet, the collecting pipe penetrates through the cylinder and is dynamically sealingly connected to the liquid inlet, and the spraying liquid is injected into the collecting pools through the collecting pipe.

[0022] In one possible design, a peeling structure is also included, which comprises:

[0023] A fixing plate is fixed to one side of the U-shaped frame and rotatably connected to the upper clamp and the reciprocating screw.

[0024] The collecting plate is slidably sleeved on the fixed rod and its height is adjusted by a nut block;

[0025] The lifting mounting block, through the cooperation of the slider and the helical groove of the reciprocating lead screw, has a cutter fixed on one side;

[0026] The cathode rod is clamped between the upper and lower clamps, and the reciprocating screw rotates to drive the cutter to descend and peel off the precious metal from the surface of the cathode rod.

[0027] In one possible design, the upper clamp and the reciprocating screw are driven by a first gear and a second gear meshing together. The diameter of the second gear is larger than that of the first gear, so that the rotational speed of the reciprocating screw is lower than that of the upper clamp.

[0028] In one possible design, a rotating rod is rotatably connected to the outside of the spray tower. The rotating rod meshes with a gear ring via a third gear. A second magnet is provided on the inner wall of the gear ring, and a first magnet is provided on the outer wall of the rotating disk. The magnetic attraction drives the rotating disk to rotate with the gear ring. The rotating rod is connected to the upper clamp via a synchronous belt.

[0029] The method of using the resource utilization equipment in this application includes the following steps:

[0030] S1. Flue gas is injected into the spray tower through the inlet pipe. When it passes through the exhaust plate, the exhaust plate is driven to rotate by the cooperation of the arc groove and the arc plate, so that the flue gas is evenly distributed in the spray tower. The flue gas floats upward through the rotating plate, and the multiple exhaust holes on it further disperse the flue gas, so that the spray liquid sprayed by the nozzle can fully contact the flue gas, so that the precious metal particles in the flue gas combine with water to form suspended matter or dissolve. 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 precious metal particles, it is discharged into the collection tank through the collection pipe. When the spray liquid in the collection tank reaches the predetermined amount, the motor drives the drive shaft and the collection box to rotate 90°. During the rotation, the liquid inlet of the collection box is misaligned with one end of the collection pipe, and the collection pipe is closed. When the subsequent collection tank rotates to the position of the collection pipe, the two correspond and the spray liquid is discharged back into the collection tank.

[0032] S3, when the drive shaft drives the collection box to rotate, the synchronous belt drives the special convex disc to rotate, under the cooperation of the outer wall of the protruding part of the special convex disc and the rolling wheel, the sliding plate moves outward, drives the connecting rod to rotate, drives the lifting plate to move upward, and the cathode rod, the anode rod and the water inlet pipe are separated from the original collection tank; when the new collection tank is turned to the corresponding position, the sliding plate moves to the middle under the loss of the special convex disc, the lifting plate moves downward again, the cathode rod, the anode rod and the water inlet pipe are extended into the new collection tank; then, the cathode rod and the anode rod electrolyze the spray liquid, separate the noble metal, and the noble metal is attached to the cathode rod; because the cathode rod, the anode rod and the water inlet pipe are symmetrically placed, after the collection box is rotated by 90 degrees, the spray liquid that is electrolyzed and has a PH value is turned to the water inlet pipe position, and the water pump injects the spray liquid into the spray pipe through the water inlet pipe to continue to spray the flue gas;

[0033] S4, after the cathode rod is attached with a large amount of noble metal, the cathode rod is taken out from the lifting plate and placed in the lower clamping seat; the rotating nut block drives the collection plate to move upward, drives the cathode rod to move upward, the upper clamping seat and the lower clamping seat cooperate to clamp the cathode rod; the motor drives the reciprocating screw rod to rotate, the reciprocating screw rod drives the lifting mounting block and the cutter to slowly descend through the meshing transmission of the first gear and the second gear, the upper clamping seat drives the cathode rod to rotate, the cutter peels off the noble metal on the cathode rod, and the peeled material falls into the collection groove for later collection;

[0034] S5, when the upper clamping seat and the reciprocating screw rod rotate to peel off the noble metal, the upper clamping seat rotates the rotating rod and the third gear through the synchronous wheel and the synchronous belt, the third gear drives the gear ring to rotate, the gear ring drives the rotating disc to rotate through the magnetic attraction of the second magnet block and the first magnet block, disperses through the flue gas, and makes the flue gas further uniformly distributed in the spray tower to fully contact with the spray liquid.

[0035] Beneficial effects: in the application, the top end of the air inlet pipe is rotationally connected with an exhaust disc, the side wall of the exhaust disc is provided with a plurality of arc-shaped grooves for discharging flue gas to the periphery of the exhaust disc, and an arc-shaped plate is fixed in each of the arc-shaped grooves; when the flue gas passes through the exhaust disc, the flue gas can drive the exhaust disc to rotate under the cooperation of the arc-shaped groove and the arc-shaped plate, so that the flue gas can be uniformly distributed in the spray tower, and the spray liquid can fully contact with the flue gas in the later stage;

[0036] In the application, the top of the lifting plate is rotationally connected with two connecting rods, the top end of each of the two connecting rods is rotationally connected with a fixed plate, each of the two sliding plates is slidably arranged on the top inner wall of the U-shaped frame, and one end of each of the two sliding plates is rotationally connected with a rolling wheel; the drive shaft drives the special convex disc to rotate, the special convex disc cooperates with the sliding plate and the rolling wheel to drive the lifting plate to lift and lower, the cathode rod and the anode rod are placed in the newly collected spray liquid, which is used for separating the noble metal in the spray liquid, and the waste of the noble metal is avoided.

[0037] In the application, the outer wall of the fixed rod is sleeved with a collecting plate, the top of the collecting plate is rotationally connected with a lower clamping seat, the lifting mounting block is sleeved on the outer wall of the fixed rod, and the lifting mounting block is slidably connected with the screw groove of the outer wall of the reciprocating screw rod; the nut block drives the collecting plate to move upwards, the collecting plate drives the cathode rod to move upwards through the lower clamping seat, the upper clamping seat and the lower clamping seat clamp the cathode rod, the reciprocating screw rod drives the lifting mounting block and the cutter to slowly descend through the meshing transmission of the first gear and the second gear, and the cutter can strip the noble metal attached to the cathode rod, and the collection of the metal is automatically completed.

[0038] In the application, the flue gas is fully dispersed in the spraying tower during the flue gas purification process, the noble metal in the flue gas is separated by the spraying liquid, the noble metal in the spraying liquid can be directly separated out by electrolysis after separation, the collection is completed, the waste of noble metal is avoided, and resource recycling is realized. BRIEF DESCRIPTION OF DRAWINGS

[0039] Figure 1 It is a three-dimensional sectional view structure schematic diagram of noble metal purification of flue gas of an industrial kiln provided in embodiment 1 of the application;

[0040] Figure 2 It is a top view sectional structure schematic diagram of an exhaust disc of noble metal purification of flue gas of an industrial kiln provided in embodiment 1 of the application;

[0041] Figure 3 It is a three-dimensional structure schematic diagram of a rotating disc and a nozzle of noble metal purification of flue gas of an industrial kiln provided in embodiment 1 of the application;

[0042] Figure 4 It is a three-dimensional structure schematic diagram of a resource utilization equipment provided in embodiment 1 of the application;

[0043] Figure 5 It is a three-dimensional structure schematic diagram of a U-shaped frame, a cylinder and a fixed plate of a resource utilization equipment provided in embodiment 1 of the application;

[0044] Figure 6 It is a three-dimensional sectional structure schematic diagram of a cylinder and a collecting box of a resource utilization equipment provided in embodiment 1 of the application;

[0045] Figure 7 It is a three-dimensional sectional structure schematic diagram of a U-shaped frame and a collecting box of a resource utilization equipment provided in embodiment 1 of the application.

[0046] Figure 8 It is a three-dimensional explosion structure schematic diagram of a connecting rod, a special-shaped convex disc and a lifting plate of a resource utilization equipment provided in embodiment 1 of the application;

[0047] Figure 9A three-dimensional cross-sectional structure schematic view of the fixed plate and the collection plate of the resource utilization device provided in Embodiment 1 of the present application;

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

[0049] Figure 11 A three-dimensional structure schematic view of the gear ring and the rotating rod of the resource utilization device provided in Embodiment 2 of the present application;

[0050] Figure 12 A three-dimensional explosion structure schematic view of the rotating disc and the gear ring of the resource utilization device provided in Embodiment 2 of the present application.

[0051] In the figure: 1, a spray tower; 2, an air inlet pipe; 3, an exhaust disc; 4, an arc-shaped groove; 5, an arc-shaped plate; 6, a rotating disc; 7, an exhaust hole; 8, a spray pipe; 9, a spray head; 10, an activated carbon layer; 11, an exhaust pipe; 12, a collection pipe; 13, a bottom plate; 14, a cylinder; 15, a collection tank; 16, a collection pool; 17, a liquid inlet; 18, a U-shaped frame; 19, a driving shaft; 20, a lifting plate; 21, a cathode rod; 22, an anode rod; 23, a water inlet pipe; 24, a water pump; 25, a special-shaped convex disc; 26, a sliding plate; 27, a rolling wheel; 28, a connecting rod; 29, a fixed plate; 30, a fixed rod; 31, a collection plate; 32, a nut block; 33, a reciprocating screw rod; 34, a lifting mounting block; 35, a cutter; 36, a first gear; 37, a second gear; 38, an upper clamping seat; 39, a lower clamping seat; 40, a collection groove; 41, a first magnet block; 42, a gear ring; 43, a second magnet block; 44, a rotating rod; 45, a third gear. DETAILED DESCRIPTION

[0052] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

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

[0054] With reference to 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 impurities and odors that may be left in the flue gas, thereby purifying the flue gas again. The flue gas purified by the activated carbon layer 10 reaches the emission standard and is discharged into the atmosphere through the exhaust pipe 11.

[0055] With reference to Figure 1 and Figure 2 The top end of the air inlet pipe 2 extends into the spray tower 1 and is located below the purification structure, and the top end of the air inlet pipe 2 is rotatably connected with the exhaust disc 3. The side wall of the exhaust disc 3 is provided with a plurality of arc-shaped grooves 4, and the arc-shaped grooves 4 are used to discharge the flue gas to the periphery of the exhaust disc 3. An arc-shaped plate 5 is fixed in each of the arc-shaped grooves 4. When the flue gas enters the exhaust disc 3 from the air inlet pipe 2 and is discharged from the arc-shaped grooves 4, the flue gas impacts the arc-shaped plate 5. Due to the cooperation of the arc-shaped grooves 4 and the arc-shaped plate 5, a reaction force is generated, thereby driving the exhaust disc 3 to rotate. The rotation of the exhaust disc 3 enables the flue gas to be uniformly dispersed in the spray tower 1, thereby providing good conditions for the subsequent purification process.

[0056] With reference to Figure 1 and Figure 3 The purification structure includes a rotating disc 6 and a spray pipe 8. The rotating disc 6 is rotatably arranged in the spray tower 1, and the bottom of the rotating disc 6 is provided with a plurality of arc-shaped sliding blocks. The rotating disc 6 is slidably connected with the annular sliding rail in the spray tower 1 through the arc-shaped sliding blocks, so as to stably rotate the rotating disc 6. A plurality of exhaust holes 7 are arranged in the rotating disc 6. When the flue gas is discharged from the exhaust disc 3, it floats upward and passes through the rotating disc 6. The plurality of exhaust holes 7 arranged in the rotating disc 6 can further disperse the flue gas in the spray tower 1.

[0057] The rotating disc 6 can be designed in the following forms: 1. Wave-shaped sieve plate: The exhaust holes 7 are distributed in a staggered manner along the wave-shaped surface. When the flue gas passes through, it generates turbulent flow under the guidance of the curved surface, thereby prolonging the residence time. 2. Honeycomb composite disc: A double-layer ceramic honeycomb structure is adopted. The upper layer is a circular hole with a diameter of 2 mm, and the lower layer is a hexagonal hole with a diameter of 1 mm, thereby realizing the staged diffusion of the flue gas.

[0058] The spray pipe 8 is fixed in the spray tower 1 and above the rotating disc 6, and the bottom of the spray pipe 8 is fixed with a plurality of spray heads 9. The spray pipe 8 is connected with an external spray liquid supply system through a pipeline, and the spray liquid can be a solution containing specific chemicals, such as sodium hydroxide (NaOH), calcium hydroxide (Ca(OH)2), chelating agent, oxidizing agent, reducing agent and heavy metal flocculant, etc. alkaline substances, in order to enhance the adsorption or reaction ability of noble metals. The spray head 9 sprays the spray liquid downward, and since the flue gas has been further dispersed by the rotating disc 6, the spray liquid can fully contact with the flue gas, and the noble metal particles in the flue gas combine with water to form suspended matter or dissolve in water, thereby realizing the purification of flue gas.

[0059] Reference Figure 1 After the spray liquid sprayed by the spray head 9 on the spray pipe 8 contacts with the flue gas, it will carry the noble metals and other substances in the flue gas downward. The collection pipe 12 at the bottom of the spray tower 1 recovers these spray liquids, and the collection pipe 12 is connected with an external recovery treatment system. The recovered spray liquid can be further treated, such as separating valuable substances such as noble metals, to realize resource recycling.

[0060] Through the above specific embodiments, the industrial kiln flue gas noble metal purification equipment can effectively purify and separate the noble metals in the flue gas. The cooperation of the inlet pipe 2 and the exhaust disc 3 makes the flue gas uniformly dispersed in the spray tower 1, providing good initial conditions for the purification process. The rotating disc 6 and the spray pipe 8 in the purification structure make the flue gas fully contact with the spray liquid, improving the purification efficiency. The activated carbon layer 10 further ensures the quality of the exhaust gas. The recovery and treatment of the spray liquid realizes resource recycling, reduces production cost, and reduces environmental pollution.

[0061] Reference Figure 5 and Figure 6 The resource utilization equipment relates to the technical field of flue gas treatment. The resource utilization equipment comprises a bottom plate 13, which is used as the support foundation of the entire equipment and has a cylinder 14 and a U-shaped frame 18 fixedly installed on the top thereof. A collection box 15 is arranged in the cylinder 14 through a rotating structure (such as a conventional rotating connection mode of a bearing). Four collection pools 16 are arranged in the collection box 15 and are used for collecting spray liquids at different stages respectively. A driving shaft 19 is connected to the inner wall of the top of the U-shaped frame 18 through a rotating connection mode of a bearing. The bottom end of the driving shaft 19 is fixedly connected to the top of the collection box 15, and the collection box 15 can be driven to rotate in the cylinder 14 through the rotation of the driving shaft 19.

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

[0063] With reference to Figure 3 , Figure 7 and Figure 8 , a conversion structure is arranged between the U-shaped frame 18 and the collection tank 15, and the conversion structure comprises the lifting plate 20 sleeved on the outer wall of the drive shaft 19 and the special-shaped convex disc 25 fixedly sleeved on the outer wall of the drive shaft 19. The lifting plate 20 is rotatably connected with two connecting rods 28 at the top, the two connecting rods 28 are distributed on the two sides of the drive shaft 19, the top ends of the two connecting rods 28 are rotatably connected with two sliding plates 26, and the two sliding plates 26 are slidingly connected with the inner wall at the top of the U-shaped frame 18 (the sliding connection can be realized by arranging a sliding rail on the inner wall at the top of the U-shaped frame 18 and arranging a sliding block matched with the sliding rail on the sliding plate 26). The ends of the two sliding plates 26 close to each other are rotatably connected with rolling wheels 27 matched with the special-shaped convex disc 25. The top of the U-shaped frame 18 is fixedly provided with a water pump 24 through a rack, the inlet end of the water pump 24 is fixedly connected with the top end of the water inlet pipe 23 through a hose, the outlet end of the water pump 24 is fixedly provided with an outlet hose, and the outlet hose is divided into two parts and fixedly connected with the two spraying pipes 8.

[0064] Specifically, when the spraying liquid in the collection tank 16 needs to be electrolyzed, the drive shaft 19 drives the collection tank 15 to rotate, and synchronously drives the special-shaped convex disc 25 to rotate. In the rotating process of the special-shaped convex disc 25, 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 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 tank 16.

[0065] When the new collection tank 16 is rotated to the corresponding position (i.e. the collection tank 16 previously collecting the spraying liquid is rotated to the position below the electrolytic components and the water inlet pipe 23), the sliding plate 26 moves to the middle under the loss of the pushing of the special-shaped convex disc 25, so as to make the lifting plate 20 move downward again, and the cathode rod 21, the anode rod 22 and the water inlet pipe 23 extend into the corresponding collection tank 16 again. Then the cathode rod 21 and the anode rod 22 are electrified to electrolyze the spraying liquid, separate the noble metal in the spraying liquid, and make the noble metal adhere to the cathode rod 21.

[0066] Because the cathode rod 21, the anode rod 22 and the water inlet pipe 23 are symmetrically placed, when the collecting box 15 rotates 90°, the spray liquid that has been electrolyzed before is rotated to the position of the water inlet pipe 23 after the pH value is adjusted by adding electrolyte composition. At this time, the water pump 24 is started, the spray liquid in the corresponding collecting tank 16 is pumped out through the water inlet pipe 23, injected into the spray pipe 8 through the liquid outlet hose, and the spray of flue gas is continued, so that the spray liquid is recycled.

[0067] With reference to Figure 5 and Figure 9 , a stripping structure is arranged on one side of the U-shaped frame 18, and the stripping structure comprises a lifting mounting block 34 and a cutter 35 fixed on one side of the lifting mounting block 34. A fixed plate 29 is fixed on one side of the U-shaped frame 18, and the fixed plate 29 provides a support basis for the whole stripping structure. An upper clamping seat 38 and a reciprocating screw rod 33 are rotatably penetrated in the fixed plate 29, and the upper clamping seat 38 and the reciprocating screw rod 33 can freely rotate in the fixed plate 29. A fixed rod 30 is fixed at the bottom of the fixed plate 29, and a sliding groove is arranged on the outer wall of the fixed rod 30. A collecting plate 31 is slidably connected to the sliding groove on the outer wall of the fixed rod 30, so that the collecting plate 31 is sleeved on the outer wall of the fixed rod 30. The collecting plate 31 can slide up and down on the fixed rod 30.

[0068] With reference to Figure 9 , the top of the collecting plate 31 is rotatably connected with a lower clamping seat 39, and the lower clamping seat 39 cooperates with the upper clamping seat 38 to clamp the cathode rod 21. The outer wall of the fixed rod 30 is provided with external threads at the bottom end, and a nut block 32 is threadedly connected to the fixed rod 30 through the external threads, and the nut block 32 is located at the bottom of the collecting plate 31. When the nut block 32 is rotated, the nut block 32 moves up and down along the fixed rod 30 due to the threaded connection between the nut block 32 and the fixed rod 30, thereby driving the collecting plate 31 to move up or down.

[0069] With reference to Figure 9 , the bottom end of the reciprocating screw rod 33 penetrates the collecting plate 31, which can increase the stability of the rotation of the reciprocating screw rod 33. The lifting mounting block 34 is slidably sleeved on the outer wall of the fixed rod 30, and the lifting mounting block 34 is slidably connected to the screw groove on the outer wall of the reciprocating screw rod 33 through a sliding block. When the reciprocating screw rod 33 rotates, the lifting mounting block 34 can be driven to reciprocate up and down through the cooperation of the sliding block and the screw groove.

[0070] With reference to Figure 9 , the outer wall of the upper clamping seat 38 and the reciprocating screw rod 33 is respectively fixedly sleeved with a first gear 36 and a second gear 37 located above the fixed 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 greater than that of the first gear 36, and the rotation speed ratio of the upper clamping seat 38 and the reciprocating screw rod 33 can be adjusted through this gear meshing mode. The top of the collecting plate 31 is provided with a collecting groove 40 for collecting the stripped metal.

[0071] In actual operation, 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, the nut block 32 moves upward along the fixed rod 30, and drives 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, and at this time the upper clamping seat 38 cooperates with the lower clamping seat 39 to clamp the cathode rod 21. Since the outer diameter of the cathode rod 21 is constant, the cutter 35 is attached to the outer wall of the cathode rod 21. Then start the motor, the motor drives the reciprocating screw rod 33 to rotate. The reciprocating screw rod 33 and the upper clamping seat 38 are meshed and driven by the first gear 36 and the second gear 37. Since the diameter of the second gear 37 is greater than that of the first gear 36, the reciprocating screw rod 33 drives the lifting mounting block 34 and the cutter 35 to slowly descend, and the upper clamping seat 38 synchronously drives the cathode rod 21 to rotate. The cutter 35 peels off the noble metal attached to the cathode rod 21 during the descending process, and the peeled noble metal falls into the collection groove 40, which is convenient for later collection

[0072] With reference to Figure 6 The collection tank 15 is provided with a plurality of liquid inlets 17, and the liquid inlets 17 are in communication 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 tank 15 through a sealing ring. When the collection tank 15 rotates, the collection pipe 12 is dislocated with the liquid inlet 17, so that leakage of the collection pipe 12 can be avoided. When the collection pipe 12 corresponds to the liquid inlet 17, the collected spray liquid can be injected into the collection pool 16 through the collection pipe 12.

[0073] With reference to Figure 8 The outer wall of the special-shaped convex disc 25 is provided with four protrusions and four grooves. When the special-shaped convex disc 25 rotates, the protrusions and the grooves cooperate with the rolling wheels 27 to drive the sliding plate 26 to move transversely and reciprocally, so as to control the lifting plate 20 to ascend and descend when the collection tank 15 rotates, thereby avoiding the cathode rod 21 and the anode rod 22 from hindering the rotation of the collection tank 15 and the water inlet pipe 23.

[0074] Example 2: with reference to Figures 10-12On the basis of improving embodiment 1, one side of the spray tower 1 is rotatably connected with a rotating rod 44 through a base, and the outer wall of the rotating rod 44 is fixedly sleeved with a plurality of third gears 45. The outer wall of the spray tower 1 is rotatably sleeved with a plurality of toothed rings 42, the bottom of the toothed ring 42 is provided with a plurality of arc-shaped sliding blocks, and the toothed ring 42 is slidably connected with the annular sliding rail of the outer wall of the spray tower 1 through the arc-shaped sliding blocks, for stably rotating the toothed ring 42, the toothed ring 42 is engaged with the adjacent third gear 45, and the toothed ring 42 and the corresponding rotating disc 6 are in the same horizontal plane. A plurality of second magnet blocks 43 are fixedly embedded on the inner wall of the toothed ring 42, and a plurality of first magnet blocks 41 are fixedly embedded on the outer wall of the rotating disc 6. The second magnet blocks 43 and the first magnet blocks 41 generate magnetic attraction force, which can drive the toothed ring 42 to rotate the rotating disc 6. The rotating rod 44 and the upper clamp seat 38 are drivingly connected through a synchronous wheel and a synchronous belt.

[0075] When the upper clamp seat 38 and the reciprocating screw rod 33 rotate to strip the noble metal on the outer wall of the cathode rod 21, the upper clamp 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 toothed ring 42 to rotate, and the toothed ring 42 drives the rotating disc 6 to rotate through the magnetic attraction force between the second magnet blocks 43 and the first magnet blocks 41. The rotating rotating disc 6 can disperse the passing flue gas, so that the flue gas is uniformly distributed in the spray tower 1, and then the flue gas is fully contacted with the spray liquid, thereby improving the spraying effect.

[0076] Through the above specific embodiments, the resource utilization equipment can strip and collect the noble metal on the cathode rod, while ensuring the full contact of the flue gas in the spray tower with the spray liquid, thereby improving the efficiency and quality of resource utilization.

[0077] The use method of the resource utilization equipment includes the following steps:

[0078] S1, inject the flue gas into the spray tower 1 through the air inlet pipe 2, and when the flue gas passes through the exhaust disc 3, the flue gas can drive the exhaust disc 3 to rotate under the cooperation of the arc-shaped groove 4 and the arc-shaped plate 5, thereby uniformly distributing the flue gas in the spray tower 1. The flue gas is dispersed upward through the rotating disc 6, and the plurality of exhaust holes 7 provided in the rotating disc 6 can further disperse the flue gas in the spray tower 1, so that the flue gas is fully contacted with the spray liquid sprayed by the spray head 9 in the later stage. The noble metal particles in the flue gas combine with water to form suspended matter or dissolve in water (a solution containing specific chemical substances is used in the spray tower 1 to enhance the adsorption or reaction capacity of the noble metal. These specific chemical substances can be sodium hydroxide (NaOH), calcium hydroxide (Ca(OH)2), chelating agent, oxidizing agent, reducing agent and heavy metal flocculant, etc. Alkaline substances are not limited here), the purified flue gas passes 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 noble metal particles in the flue gas, the spray liquid is discharged into the corresponding collection tank 16 through the collection pipe 12. When the spray liquid in the collection tank 16 reaches a predetermined amount, the motor drives the driving shaft 19 and the collection box 15 to rotate 90°. When the collection box 15 rotates, the liquid inlet 17 is out of position with one end of the collection pipe 12, and the collection pipe 12 is closed. When the subsequent collection tank 16 rotates to the position of the collection pipe 12, the collection pipe 12 corresponds to the liquid inlet 17, and the spray liquid can be discharged into the collection tank 16 again;

[0080] S3, when the driving shaft 19 drives the collection box 15 to rotate, the special-shaped convex plate 25 is also driven to rotate. The sliding plate 26 moves outward under the cooperation of the outer wall of the protruding part of the special-shaped convex plate 25 and the rolling wheel 27. 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 tank 16. When the new collection tank 16 rotates to the corresponding position, the sliding plate 26 moves to the middle under the loss of the push of the special-shaped convex plate 25. The lifting plate 20 can move downward again, and the cathode rod 21, the anode rod 22 and the water inlet pipe 23 can extend into the corresponding collection tank 16 (the collection tank 16 that collected the spray liquid before) again. Then the cathode rod 21 and the anode rod 22 are electrified to electrolyze the spray liquid, which is used to separate the noble metal in the spray liquid, and the noble metal adheres to the cathode rod 21. Since the cathode rod 21, the anode rod 22 and the water inlet pipe 23 are placed symmetrically, when the collection box 15 rotates 90°, the spray liquid that has been electrolyzed before is rotated to the position of the water inlet pipe 23 after adjusting the pH value by adding electrolyte components. The water pump 24 injects the spray liquid in the corresponding collection tank 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 noble metal adheres to the cathode rod 21, the noble metal needs to be stripped. At this time, the cathode rod 21 is taken out of 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. 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 does not change, the cutter 35 is attached to the outer wall of the cathode rod 21. Then the motor drives the reciprocating screw rod 33 to rotate. The reciprocating screw rod 33 and the upper clamp seat 38 are meshed and transmitted through the first gear 36 and the second gear 37. Therefore, the reciprocating screw rod 33 drives the lifting mounting block 34 and the cutter 35 to slowly descend, and the upper clamp seat 38 synchronously drives the cathode rod 21 to rotate. The cutter 35 can strip the noble metal adhering to the cathode rod 21, and the stripped noble metal falls into the collection groove 40 for later collection;

[0082] S5, when the upper clamp seat 38 and the reciprocating wire rod 33 rotate the noble metal on the outer wall of the cathode rod 21, the upper clamp seat 38 is driven to rotate by the synchronous wheel, the synchronous belt, the rotating rod 44 and the third gear 45, the third gear 45 drives the gear ring 42 to rotate, the gear 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, and then the rotating disc 6 that rotates can scatter the flue gas passing through, so that the flue gas is distributed in the spray tower 1, and the flue gas is fully contacted with the spray liquid.

[0083] The drawings in the specification of the present application are only of a schematic nature, and the size and shape of each component shown are not actual limitations but only a schematic representation. In the actual implementation process, each component can be reasonably configured and adjusted according to specific needs and actual conditions.

[0084] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can make equivalent replacements or changes to the technical range disclosed in the present application according to the technical scheme and the inventive concept of the present application, which should be covered in the protection scope of the present application.

Claims

1. A precious metal purification device for industrial kiln flue gas, used for purifying and separating precious metals from flue gas, characterized in that, It includes a spray tower (1), with an air inlet pipe (2) fixedly passing through its bottom, an exhaust pipe (11) fixedly connected to its top, and a collection pipe (12) at its bottom. The purification structure consists of multiple spray units arranged from top to bottom. Each spray unit includes a rotating disk (6) and a spray pipe (8) located above it. The rotating disk (6) is rotatably arranged inside the spray tower (1) and has multiple exhaust holes (7). The bottom of the spray pipe (8) is provided with multiple nozzles (9). An activated carbon layer (10) is fixed inside the spray tower (1) and located above the purification structure; In this process, flue gas enters the spray tower (1) through the inlet pipe (2) and is dispersed by passing through the exhaust holes (7) of the rotating disk (6). The spray liquid is sprayed downwards through the nozzle (9) and comes into contact with the flue gas. Precious metal particles are captured by the spray liquid to form suspended matter or dissolve. The purified flue gas is filtered through the activated carbon layer (10) and discharged through the exhaust pipe (11). The spray liquid is recovered through the collection pipe (12). The top of the inlet pipe (2) extends into the spray tower (1) and is rotatably connected to the exhaust disk (3). The side wall of the exhaust disk (3) is provided with multiple 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. The spray liquid contains an alkaline solution or a chelating agent. It also includes: The bottom plate (13) has a cylinder (14) and a U-shaped frame (18) fixed on its top. A collection box (15) is rotatably installed inside the cylinder (14), and four collection pools (16) are provided inside the collection box (15). The drive shaft (19) is rotatably connected to the top of the U-shaped frame (18) and its bottom end is fixed to the collection box (15); The conversion structure includes a lifting plate (20) sleeved on the outer wall of the drive shaft (19) and a shaped cam (25). The lifting plate (20) is connected to a sliding plate (26) via a connecting rod (28). The sliding plate (26) cooperates with the shaped cam (25) via a rolling wheel (27) to achieve lifting. Electrolysis components include a cathode rod (21) and an anode rod (22) that penetrate the lifting plate (20); The water inlet pipe (23) is fixedly connected to the lifting plate (20) and connected to the spray pipe (8) through the water pump (24); the side wall of the collection box (15) is provided with a liquid inlet (17), the collection pipe (12) passes through the cylinder (14) and is dynamically sealed to the liquid inlet (17), and the spray liquid is injected into the collection pool (16) through the collection pipe (12).

2. The precious metal purification equipment for industrial kiln flue gas according to claim 1, characterized in that, It also includes a peeling structure, which comprises: The fixing plate (29) is fixed to one side of the U-shaped frame (18) and rotatably connected to the upper clamp (38) and the reciprocating screw (33); The collecting plate (31) is slidably sleeved on the fixed rod (30) and its height is adjusted by the nut block (32); The lifting mounting block (34) is engaged with the spiral groove of the reciprocating screw (33) through the slider, and a cutter (35) is fixed on one side of it. The cathode rod (21) is held between the upper clamp (38) and the lower clamp (39). The reciprocating screw (33) rotates to drive the cutter (35) to descend and peel off the precious metal from the surface of the cathode rod (21).

3. The precious metal purification equipment for industrial kiln flue gas according to claim 1, characterized in that, The upper clamp (38) and the reciprocating screw (33) are driven by the meshing of 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 speed of the reciprocating screw (33) is lower than that of the upper clamp (38).

4. The precious metal purification equipment for industrial kiln flue gas according to claim 1, characterized in that, The spray tower (1) is rotatably connected to a rotating rod (44) on the outside. The rotating rod (44) meshes with a gear ring (42) through a third gear (45). A second magnet block (43) is provided on the inner wall of the gear 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 with the gear ring (42). The rotating rod (44) is connected to the upper clamp (38) through a synchronous belt.

5. A method of using the resource utilization equipment, applied to the resource utilization equipment described in claim 4, characterized in that, Includes the following steps: S1. Flue gas is injected into the spray tower (1) through the inlet pipe (2). When it passes through the exhaust plate (3), the exhaust plate (3) is driven to rotate under the cooperation of the arc groove (4) and the arc plate (5), so that the flue gas is evenly distributed in the spray tower (1). The flue gas floats upward through the rotating plate (6), and the multiple exhaust holes (7) on it further disperse the flue gas, so that the spray liquid sprayed by the nozzle (9) can fully contact the flue gas, so that the precious metal particles in the flue gas combine with water to form suspension 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 precious metal particles, it is discharged into the collection tank (16) through the collection pipe (12). When the spray liquid in the collection tank (16) reaches a predetermined amount, the motor drives the drive shaft (19) and the collection box (15) to rotate 90°. During the rotation, the liquid inlet (17) of the collection box (15) is misaligned with one end of the collection pipe (12), and the collection pipe (12) is closed. When the subsequent collection tank (16) rotates to the position of the collection pipe (12), the two correspond, and the spray liquid is discharged back into the collection tank (16). S3. When the drive shaft (19) drives the collection box (15) to rotate, it simultaneously drives the irregular convex disk (25) to rotate. With the cooperation of the rolling wheel (27) and the outer wall of the protruding part of the irregular 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), anode rod (22) and water inlet pipe (23) are separated from the original collection tank (16); when the new collection tank (16) rotates to the corresponding position, the sliding plate (26) loses its position. The irregularly shaped convex plate (25) moves towards the center, and the lifting plate (20) moves down again, extending the cathode rod (21), anode rod (22) and water inlet pipe (23) into the new collection tank (16); then, the cathode rod (21) and anode rod (22) are energized to electrolyze the spray liquid, separating the precious metals, which adhere to the cathode rod (21); because the cathode rod (21), anode rod (22) and water inlet pipe (23) are symmetrically placed, after the collection box (15) rotates 90°, the electrolyzed and pH-adjusted spray liquid is transferred to the position of water inlet pipe (23), and the water pump (24) injects the spray liquid into the spray pipe (8) through the water inlet pipe (23) to continue spraying the flue gas; S4. After a large amount of precious metal is attached to the cathode rod (21), it is removed from the lifting plate (20) and placed in the lower clamp (39). The rotating nut block (32) drives the collecting plate (31) to move upward, which in turn moves the cathode rod (21) upward. The upper clamp (38) and the lower clamp (39) cooperate to clamp the cathode rod (21). The motor drives the reciprocating screw (33) to rotate. Through the meshing transmission of the first gear (36) and the second gear (37), the reciprocating screw (33) drives the lifting mounting block (34) and the cutter (35) to slowly descend. At the same time, the upper clamp (38) drives the cathode rod (21) to rotate. The cutter (35) peels off the precious metal on the cathode rod (21). The peeled material falls into the collecting tank (40) for easy collection later. When the upper clamp (38) and the reciprocating screw (33) rotate to strip the precious metal, the upper clamp (38) drives the rotating rod (44) and the third gear (45) to rotate via the synchronous wheel and synchronous belt. The third gear (45) drives the gear ring (42) to rotate. The gear ring (42) drives the rotating disk (6) to rotate via the magnetic attraction of the second magnet block (43) and the first magnet block (41), which disperses the flue gas and makes it more evenly distributed in the spray tower (1) and fully contact the spray liquid.

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