CN120285708B

CN120285708B - Equipment and method for precious metal purification and resource utilization of industrial kiln flue gas

Info

Publication number: CN120285708B
Application number: CN202510686109.3A
Authority: CN
Inventors: 张�浩; 王宁宁; 王学金; 李文艺
Original assignee: Filcon Environmental Engineering Shanghai Co ltd
Current assignee: Filcon Environmental Engineering Shanghai Co ltd
Priority date: 2025-05-27
Filing date: 2025-05-27
Publication date: 2025-10-24
Anticipated expiration: 2045-05-27
Also published as: CN120285708A; CN121272212A; CN121272212B

Abstract

Equipment and methods for purifying and recycling precious metals in flue gas from industrial kilns belong to the field of flue gas treatment technology. To address the problems of low purification efficiency, difficulty in precious metal recovery, and easy secondary pollution from spray liquids in existing technologies, the equipment consists of a spray tower and a resource utilization device: an exhaust disk and a multi-layer rotating disk are arranged in the spray tower. The flue gas drives the exhaust disk to rotate through the arc groove to achieve initial dispersion, and then disperses again through the exhaust holes of the rotating disk. Combined with the alkaline solution or chelating agent sprayed by the spray pipe, the purified flue gas is filtered and discharged through the activated carbon layer. The resource utilization device includes a rotatable collection box with four collection pools that alternately receive the spray liquid. The drive shaft drives the special-shaped convex disc to control the periodic lifting and lowering of the lifting plate, so that the cathode rod, anode rod, and water inlet pipe are inserted into the collection pool for electrolytic recovery, and the precious metals adhere to the surface of the cathode rod. The equipment realizes the integration of flue gas dispersion, spray adsorption, and electrolytic recovery, significantly improving the recovery rate of precious metals and reducing the risk of secondary pollution.

Description

Equipment and method for purifying and recycling noble metal in industrial kiln flue gas

Technical Field

The invention relates to the technical field of flue gas treatment, in particular to equipment and a method for purifying and recycling noble metals in industrial kiln flue gas.

Background

In the industrial production process, in particular to an industrial kiln with high-temperature smelting, roasting and other processes, the discharged flue gas often contains trace noble metal particle toothed rings. The noble metals have remarkable economic value, if the noble metals are directly discharged without treatment, the noble metal resources are wasted, the economic value is lost, and serious pollution to the ecological environment is possible. Therefore, how to purify the flue gas efficiently and realize the recycling of noble metals has become a key technical problem to be solved urgently in the current industrial field.

At present, the industrial kiln flue gas noble metal purification mainly adopts the processes of physical adsorption method, chemical precipitation method, electrolytic method and the like. However, in practical application, the methods have obvious limitations, such as limited adsorption capacity in the physical adsorption method, easy generation of secondary sludge in the chemical precipitation method, and high energy consumption in the electrolysis method, so that the overall purification efficiency and economy are difficult to balance. In particular to the problems of uniform dispersion of noble metal particles in flue gas and high-efficiency contact with purifying liquid, the prior art still lacks an effective solution.

In addition, the precious metal-containing spray liquid generated in the operation process of the traditional flue gas purification equipment can cause secondary loss of precious metal resources if not properly treated and directly discharged or simply disposed, and residual pollutants of the precious metal-containing spray liquid can also cause secondary pollution risks of water or soil.

Aiming at the problems, the invention provides equipment and a method for purifying and recycling noble metals in industrial kiln flue gas.

Disclosure of Invention

The invention aims to solve the defects that the existing flue gas cannot react with spray liquid sufficiently and precious metals in the flue gas cannot be purified and recovered effectively, and provides equipment and a method for purifying and recycling the precious metals in the flue gas of an industrial kiln.

In order to achieve the above purpose, the present invention adopts the following technical scheme:

The industrial kiln flue gas noble metal purifying equipment is used for purifying and separating noble metals in flue gas and comprises a spray tower, wherein the bottom of the spray tower is fixedly penetrated with an air inlet pipe, the top of the spray tower is fixedly communicated with an exhaust pipe, and the bottom of the spray tower is provided with a collecting pipe;

The purifying structure consists of a plurality of groups of spraying units arranged from top to bottom, each group of spraying units comprises a rotating disc and a spraying pipe positioned above the rotating disc, the rotating disc is rotatably arranged in the spraying tower and provided with a plurality of exhaust holes, and a plurality of spray heads are arranged at the bottom of the spraying pipe;

the activated carbon layer is fixed in the spray tower and is positioned above the purifying structure;

Wherein, after the flue gas gets into the spray column through the intake pipe, pass the exhaust hole of rolling disc in proper order and be dispersed, spray liquid passes through the shower nozzle and sprays downwards and contacts with the flue gas, noble metal particles are caught by spray liquid and form suspended solid or dissolve, and the flue gas after purifying is discharged by the blast pipe after the filtration of active carbon layer, sprays liquid and retrieves through the collecting pipe.

In one possible design, the top end of the air inlet pipe extends into the spray tower and is rotationally connected with the exhaust disc, a plurality of arc-shaped grooves are circumferentially formed in the side wall of the exhaust disc, arc plates are fixed in each arc-shaped groove, and the exhaust disc is driven to rotate when smoke is discharged through the arc-shaped grooves, so that the smoke is uniformly diffused.

In one possible design, the spray liquid comprises an alkaline solution or a chelating agent.

The recycling equipment comprises the industrial kiln flue gas noble metal purification and further comprises:

The bottom plate, its top is fixed with cylinder and U-shaped frame, the said cylinder rotates and has collecting box, there are four collecting ponds in the collecting box;

The driving shaft is rotationally connected to the top of the U-shaped frame, and the bottom end of the driving shaft is fixed with the collecting box;

the conversion structure comprises a lifting plate and a special-shaped convex disc, wherein the lifting plate is sleeved on the outer wall of the driving shaft, the lifting plate is connected with the 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;

An electrolysis member including a cathode rod and an anode rod penetrating the elevating plate;

the water inlet pipe is fixedly penetrated through the lifting plate and communicated with the spray pipe through the water pump.

In one possible design, the outer wall of the special-shaped convex disc is provided with four protrusions and grooves, and when the driving shaft rotates, the protrusions push the rolling wheels to enable the sliding plate to move transversely, 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 tank.

In one possible design, the side wall of the collecting box is provided with a liquid inlet, and the collecting pipe penetrates through the cylinder and is in dynamic sealing connection with the liquid inlet, and the spray liquid is injected into the collecting tank through the collecting pipe.

In one possible design, further comprising a lift-off structure comprising:

The fixing plate is fixed on one side of the U-shaped frame and is rotationally connected with the upper clamping seat and the reciprocating screw rod;

The collecting plate is sleeved on the fixed rod in a sliding way and the height of the collecting plate is adjusted through the nut block;

the lifting installation block is matched with the spiral groove of the reciprocating screw rod through a sliding block, and a cutter is fixed on one side of the lifting installation block;

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 peel noble metal on the surface of the cathode rod.

In one possible design, the upper clamping seat and the reciprocating screw are in meshed 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 rotating speed of the reciprocating screw is lower than that of the upper clamping seat.

In one possible design, the outer side of the spray tower is rotationally connected with a rotating rod, the rotating rod is meshed with a toothed ring through a third gear, a second magnet block is arranged on the inner wall of the toothed ring, a first magnet block is arranged on the outer wall of a rotating disc, the rotating disc is driven to rotate along with the toothed ring by magnetic attraction, and the rotating rod is in transmission connection with an upper clamping seat through a synchronous belt.

The application method of the resource utilization equipment comprises the following steps:

S1, injecting the flue gas into a spray tower through an air inlet pipe, and driving the air exhaust disk to rotate under the cooperation of an arc-shaped groove and an arc-shaped plate when the flue gas passes through the air exhaust disk so as to uniformly spread the flue gas in the spray tower, wherein the flue gas drifts upwards through the rotating disk, and a plurality of air exhaust holes on the flue gas further disperse the flue gas, so that spray liquid sprayed by a spray head is convenient to fully contact the flue gas, and noble metal particles in the flue gas are combined with water to form suspended matters or dissolve;

S2, spraying liquid is adsorbed on precious metal particles and then is discharged to a collecting tank through a collecting pipe, when the spraying liquid in the collecting tank reaches a preset amount, a motor drives a driving shaft and a collecting box to rotate 90 degrees, a liquid inlet of the collecting box is misplaced with one end of the collecting pipe in the rotating process, the collecting pipe is sealed, and when the subsequent collecting tank rotates to the collecting pipe position, the two parts correspond to each other, and the spraying liquid is discharged to the collecting tank again;

S3, when the driving shaft drives the collecting box to rotate, the special-shaped convex disc is synchronously driven to rotate, the sliding plate moves outwards under the cooperation of the rolling wheel and the outer wall of the protruding part of the special-shaped convex disc to drive the connecting rod to rotate, the lifting plate is driven to move upwards, so that the cathode rod, the anode rod and the water inlet pipe are separated from the original collecting tank;

S4, after a large amount of noble metal is attached to the cathode rod, the cathode rod is taken down from the lifting plate and placed in the lower clamping seat, the collecting plate is driven to move upwards by the rotating nut block to drive the cathode rod to move upwards, the upper clamping seat and the lower clamping seat are matched to clamp the cathode rod;

S5, when the upper clamping seat and the reciprocating screw rod rotate to strip noble metal, the upper clamping seat drives the rotating rod and the third gear to rotate through the synchronous wheel and the synchronous belt, the third gear drives the toothed ring to rotate, and the toothed ring drives the rotating disc to rotate through the magnetic attraction of the second magnet block and the first magnet block, so that the toothed ring breaks up and passes through smoke, is further evenly distributed in the spray tower, and is fully contacted with spray liquid.

The invention has the beneficial effects that the top end of the air inlet pipe is rotationally communicated with the air exhaust disc, the side wall of the air exhaust disc is provided with a plurality of arc grooves for discharging the flue gas to the periphery of the air exhaust disc, and the arc grooves are internally fixed with arc plates;

According to the invention, the top of the lifting plate is rotationally provided with two connecting rods, the top ends of the two connecting rods are rotationally connected with a fixed plate, the two sliding plates slide on the inner wall of the top of the U-shaped frame, and one ends of the two sliding plates, which are close to each other, are rotationally connected with rolling wheels;

according to the invention, the collecting plate is sleeved on the outer wall of the fixed rod in a sliding way, the top of the collecting plate is rotationally connected with the lower clamping seat, the lifting installation block is sleeved on the outer wall of the fixed rod in a sliding way, the lifting installation block is in sliding fit with the spiral groove on the outer wall of the reciprocating screw rod through the sliding block, 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 are matched to clamp the cathode rod, the reciprocating screw rod and the upper clamping seat are in meshed transmission through the first gear and the second gear, the lifting installation block and the cutter are driven by the reciprocating screw rod to slowly descend, and the noble metal attached to the cathode rod can be stripped by the cutter, so that metal collection is automatically completed.

According to the invention, the flue gas is distributed in the spray tower when the flue gas is fully scattered in the flue gas purification process, so that the precious metals in the flue gas can be separated by the spray liquid conveniently, and the precious metals in the spray liquid can be separated out directly through electrolysis after separation, so that the collection is completed, the waste of the precious metals is avoided, and the resource recycling is realized.

Drawings

FIG. 1 is a schematic view of a three-dimensional sectional structure of the industrial furnace flue gas precious metal purification provided in embodiment 1 of the present invention;

FIG. 2 is a schematic top cross-sectional view of an exhaust tray for purifying noble metals in flue gas of an industrial kiln according to embodiment 1 of the present invention;

FIG. 3 is a schematic three-dimensional structure of a rotating disc and a spray head for purifying noble metals in flue gas of an industrial kiln provided in embodiment 1 of the present invention;

FIG. 4is a schematic three-dimensional structure of the recycling device according to embodiment 1 of the present invention;

FIG. 5 is a schematic three-dimensional structure of a U-shaped frame, a cylinder and a fixing plate of the resource utilization device provided in embodiment 1 of the present invention;

FIG. 6 is a schematic view showing a three-dimensional sectional structure of a cylinder and a collection box of the recycling apparatus provided in embodiment 1 of the present invention;

Fig. 7 is a schematic diagram of a three-dimensional cross-sectional structure of a U-shaped rack and a collection box of the recycling apparatus provided in embodiment 1 of the present invention.

FIG. 8 is a schematic diagram of a three-dimensional explosion structure of a connecting rod, a special-shaped cam and a lifting plate of the resource utilization device provided by the embodiment 1 of the invention;

FIG. 9 is a schematic view showing three-dimensional sectional structures of a fixing plate and a collecting plate of the recycling apparatus provided in embodiment 1 of the present invention;

FIG. 10 is a schematic three-dimensional structure of a resource utilization device according to embodiment 2 of the present invention;

FIG. 11 is a schematic three-dimensional structure of a toothed ring and a rotating rod of the resource utilization device according to embodiment 2 of the present invention;

Fig. 12 is a schematic view of a three-dimensional exploded structure of a rotating disc and a toothed ring of the resource utilization device according to embodiment 2 of the present invention.

The spray tower, 2, an air inlet pipe, 3, an exhaust disc, 4, an arc groove, 5, an arc plate, 6, a rotating disc, 7, an exhaust hole, 8, a spray pipe, 9, a spray head, 10, an active carbon layer, 11, an exhaust pipe, 12, a collecting pipe, 13, a bottom plate, 14, a cylinder, 15, a collecting box, 16, a collecting tank, 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 collecting 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 collecting groove, 41, a first magnet block, 42, a toothed ring, 43, a second magnet block, 44, a rotating rod, 45 and a third gear.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.

Embodiment 1 referring to fig. 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, and the equipment mainly comprises a spray tower 1, wherein the spray tower 1 is used as a main place for flue gas purification, and an air inlet pipe 2 fixedly penetrates through the inner wall of the bottom of the spray tower 1 and is used for injecting the flue gas into the spray tower 1 for purification. The spray tower 1 is internally provided with a purification structure formed by a plurality of groups of spray structures, and the purification structure is used for purifying the flue gas entering the spray tower 1 for a plurality of times. An activated carbon layer 10 is fixed above the purifying 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 purified and filtered flue gas, and the bottom of the spray tower 1 is fixedly communicated with a collecting pipe 12 for recycling spray liquid sprayed by a spray structure.

Referring to fig. 1, the flue gas purified by the purification structure continues to move upward, passing through the activated carbon layer 10. The activated carbon layer 10 has good adsorption performance, and can further adsorb impurities and peculiar smell possibly remained in the flue gas to purify the flue gas again. The flue gas purified by the activated carbon layer 10 reaches the emission standard and is discharged to the atmosphere through the exhaust pipe 11.

Referring to fig. 1 and 2, the top end of the air inlet pipe 2 extends into the spray tower 1 and is positioned below the purifying structure, and the top end of the air inlet pipe 2 is rotatably communicated with an exhaust disc 3. The side wall of the exhaust disc 3 is provided with a plurality of arc grooves 4, and the arc grooves 4 are used for discharging flue gas to the periphery of the exhaust disc 3. Arc 5 is fixed with in a plurality of arc grooves 4, and after the gas inlet pipe 2 got into exhaust dish 3, from arc groove 4 discharge, the gas impact arc 5 can produce a reaction force owing to the cooperation of arc groove 4 and arc 5 to drive exhaust dish 3 rotates. The rotation of the exhaust disc 3 enables the flue gas to be uniformly dispersed in the spray tower 1, providing good conditions for the subsequent purification process.

Referring to fig. 1 and 3, the purge structure includes a rotating disk 6 and a shower pipe 8. The rotating disc 6 rotates and sets up in the spray column 1, and the bottom of rotating disc 6 is equipped with a plurality of arc sliders, and the annular slide rail sliding fit in rotating disc 6 and spray column 1 through the arc slider for make the stable rotation of rotating disc 6, be equipped with a plurality of exhaust holes 7 in the rotating disc 6. When the flue gas is discharged from the exhaust disc 3, the flue gas drifts upwards and passes through the rotating disc 6, and the plurality of exhaust holes 7 arranged in the rotating disc 6 can further enable the flue gas to be dispersed in the spray tower 1.

The rotary disc 6 can be designed into a shape of 1, a wavy sieve plate, wherein exhaust holes 7 are distributed along a wavy curved surface in a staggered way, and the smoke is guided by the curved surface to generate turbulence when passing through, so that the retention time is prolonged, and 2, a honeycomb composite disc adopts a double-layer ceramic honeycomb structure, wherein the upper layer is a round hole with the diameter of 2mm, and the lower layer is a hexagonal hole with the diameter of 1mm, so that the graded diffusion of the smoke is realized.

The spray pipe 8 is fixed in the spray tower 1 and is positioned above the rotating disc 6, and a plurality of spray heads 9 are fixed at the bottom of the spray pipe 8. The shower pipe 8 is connected to an external shower liquid supply system through a pipe, and the shower liquid may be a solution containing a specific chemical substance, such as sodium hydroxide (NaOH), calcium hydroxide (Ca (OH) ₂), a chelating agent, an oxidizing agent, a reducing agent, and a heavy metal flocculant, etc., to enhance adsorption or reaction ability to noble metals. The spray head 9 sprays the spray liquid downwards, and as the flue gas is further dispersed through the rotating disc 6, the spray liquid can be fully contacted with the flue gas, noble metal particles in the flue gas are combined with water to form suspended matters or dissolve in the water, so that the flue gas is purified.

Referring to fig. 1, after the spray liquid sprayed by the spray nozzle 9 on the spray pipe 8 contacts with the flue gas, the spray liquid can drop with substances such as noble metals in the flue gas. The collecting pipe 12 at the bottom of the spray tower 1 is used for recovering the spray liquid, the collecting pipe 12 is connected with an external recovery treatment system, and the recovered spray liquid can be subjected to further treatment, such as separation of valuable substances such as noble metals, and the like, so that the recovery and the utilization of resources are realized.

Through the specific implementation mode, the industrial kiln flue gas noble metal purifying equipment can effectively purify and separate noble metals in flue gas. The cooperation of the air inlet pipe 2 and the air outlet disk 3 makes the flue gas uniformly spread in the spray tower 1, and provides good initial conditions for the purification process. The rotating disc 6 and the spray pipe 8 in the purifying structure enable the flue gas to be in contact with the spray liquid fully, so that the purifying efficiency is improved. The activated carbon layer 10 further ensures the quality of the exhaust gas. The recovery treatment of the spray liquid realizes the recovery and utilization of resources, reduces the production cost and reduces the pollution to the environment.

Referring to fig. 5 and 6, the recycling device relates to the technical field of flue gas treatment, and comprises a bottom plate 13, wherein the bottom plate 13 is used as a supporting foundation of the whole device, and a cylinder 14 and a U-shaped frame 18 are fixedly arranged at the top of the bottom plate 13. The cylinder 14 is internally provided with a collecting box 15 through a rotating structure (such as a bearing and the like in a conventional rotating connection mode), and four collecting tanks 16 are arranged in the collecting box 15 and are used for respectively collecting the spray liquid in different stages. The top inner wall of the U-shaped frame 18 is connected with a driving shaft 19 in a rotating connection mode through a bearing and the like, the bottom end of the driving shaft 19 is fixedly connected with the top of the collecting box 15, and the collecting box 15 can be driven to rotate in the cylinder 14 through rotation of the driving shaft 19.

Referring to fig. 7 and 8,U, the inside of the rack 18 is provided with an electrolysis member and a water inlet pipe 23, and the electrolysis member and the water inlet pipe 23 are symmetrically arranged. The electrolysis component is 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, fixed baffle rings are fixedly sleeved on the outer walls of the cathode rod 21 and the anode rod 22, and the cathode rod 21 and the anode rod 22 are stably placed on the lifting plate 20 through the fixed baffle rings. The cathode rod 21 and the anode rod 22 are communicated with the anode and the cathode of an external power supply through wires and are used for electrolyzing the spray liquid. A water inlet pipe 23 is also fixed through the lifting plate 20 and the electrolysis members and the water inlet pipe 23 can extend into the respective collection tanks 16.

Referring to fig. 3, 7 and 8, a conversion structure is provided between the U-shaped frame 18 and the collecting box 15, and the conversion structure includes a lifting plate 20 sleeved on the outer wall of the driving shaft 19 and a shaped convex plate 25 fixedly sleeved on the outer wall of the driving shaft 19. The lifter plate 20 top rotates and is connected with two connecting rods 28, and two connecting rods 28 distribute in the both sides of drive shaft 19, and the top of two connecting rods 28 is all rotated and is connected with slide plate 26, and two slide plate 26 all sliding connection are at the top inner wall of U type frame 18 (accessible sets up the slide rail at U type frame 18 top inner wall, and slide plate 26 sets up and realizes sliding connection with slide rail complex slider). One end of each sliding plate 26, which is close to each other, is rotatably connected with a rolling wheel 27, and the rolling wheel 27 is matched with the special-shaped convex disc 25. The top of the U-shaped frame 18 is fixed with a water pump 24 through a frame, the liquid inlet end of the water pump 24 is fixedly communicated with the top end of a 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 two spray pipes 8.

Specifically, when the electrolysis is required to be performed on the spray liquid in the collecting tank 16, the driving shaft 19 drives the collecting tank 15 to rotate and synchronously drives the special-shaped convex disc 25 to rotate. In the process of rotating the special-shaped convex plate 25, the sliding plate 26 moves outwards under the cooperation of the rolling wheel 27 and the outer wall of the protruding part of the special-shaped convex plate 25, and the sliding plate 26 drives the connecting rod 28 to rotate and drives the lifting plate 20 to move upwards until the cathode rod 21, the anode rod 22 and the water inlet pipe 23 are separated from the corresponding collecting tanks 16.

When a new collecting tank 16 rotates to a corresponding position (i.e. the collecting tank 16 which previously collected the spray liquid rotates to the lower part of the electrolysis component and the water inlet pipe 23), the sliding plate 26 moves to the middle under the pushing of the special-shaped convex disc 25, so that the lifting plate 20 can move downwards again, and the cathode rod 21, the anode rod 22 and the water inlet pipe 23 are extended into the corresponding collecting tank 16 again. Then, the cathode rod 21 and the anode rod 22 are energized to electrolyze the spray liquid, and the noble metal in the spray liquid is separated and attached to the cathode rod 21.

Because the cathode rod 21 and the anode rod 22 are symmetrically arranged with the water inlet pipe 23, when the collecting box 15 rotates 90 degrees, the electrolytic spray liquid before the collecting box 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, spraying liquid in the corresponding collecting tank 16 is pumped out through the water inlet pipe 23, and is injected into the spraying pipe 8 through the liquid outlet hose, so that the smoke spraying is continued, and the cyclic utilization of the spraying liquid is realized.

Referring to fig. 5 and 9, a peeling structure is provided at one side of the U-shaped frame 18, and the peeling structure includes a lifting mounting block 34 and a cutter 35 fixed at one side thereof. A fixing plate 29 is fixed to one side of the U-shaped frame 18, and the fixing plate 29 provides a supporting base for the entire stripping structure. The upper clamping seat 38 and the reciprocating screw 33 penetrate through the fixed plate 29 in a rotating way, and the upper clamping seat 38 and the reciprocating screw 33 can rotate freely in the fixed plate 29. A fixing rod 30 is fixed at the bottom of the fixing plate 29, a chute is arranged on the outer wall of the fixing rod 30, and the collecting plate 31 is in sliding fit with the chute on the outer wall of the fixing rod 30 through a sliding block, so that the outer wall of the fixing rod 30 is sleeved in a sliding manner. The collecting plate 31 is slidable up and down on the fixing rod 30.

Referring to fig. 9, a lower holder 39 is rotatably coupled to the top of the collecting plate 31, and the lower holder 39 is engaged with the upper holder 38 for clamping the cathode rod 21. The outer wall of the fixing rod 30 is provided with external threads at the bottom end, the fixing rod 30 is connected with a nut block 32 through the external threads, and the nut block 32 is positioned 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 fixing rod 30 due to the screw connection of the nut block 32 with the fixing rod 30, thereby driving the collecting plate 31 to move up or down.

Referring to fig. 9, the bottom end of the reciprocating screw 33 penetrates the collecting plate 31, and thus the design may increase the stability of the rotation of the reciprocating screw 33. The lifting installation block 34 is slidably sleeved on the outer wall of the fixed rod 30, and the lifting installation block 34 is slidably matched with the spiral groove on the outer wall of the reciprocating screw 33 through a sliding block. When the reciprocating screw 33 rotates, the lifting mounting block 34 can be driven to reciprocate up and down by the cooperation of the slider and the spiral groove.

Referring to fig. 9, the upper holder 38 and the outer wall of the reciprocating screw 33 are fixedly sleeved with a first gear 36 and a second gear 37 above the fixing plate 29, respectively, and the first gear 36 and the second gear 37 are engaged with each other. The diameter of the second gear 37 is larger than that of the first gear 36, and the rotation speed ratio of the upper clamping seat 38 to the reciprocating screw 33 can be adjusted by the gear engagement mode. The top of the collecting plate 31 is provided with a collecting tank 40 for collecting the stripped metal.

In the actual operation, the cathode rod 21 is first taken out from the elevating plate 20 and placed in the lower holder 39. The nut block 32 is then rotated, and the nut block 32 moves upward along the fixing rod 30, driving the collecting plate 31 upward. The collecting plate 31 drives the cathode rod 21 to move upwards 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 the moment, the upper clamping seat 38 and the lower clamping seat 39 are matched to clamp the cathode rod 21. Since the outer diameter of the cathode rod 21 is unchanged, the cutter 35 is attached to the outer wall of the cathode rod 21. The motor is then started, which drives the reciprocating screw 33 to rotate. The reciprocating screw rod 33 and the upper clamping seat 38 are in meshed transmission through the first gear 36 and the second gear 37, and the diameter of the second gear 37 is larger than that of the first gear 36, so that 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 in the descending process, and the peeled noble metal falls into the collecting tank 40, so that the later collection is facilitated

Referring to fig. 6, a plurality of liquid inlets 17 are provided in the collection tank 15, and the liquid inlets 17 are communicated with the collection tank 16. One end of the collecting pipe 12 is fixedly penetrated through the cylinder 14 and is abutted against the outer wall of the collecting box 15 through a sealing ring. When the collecting box 15 rotates, the collecting pipe 12 is misplaced with the liquid inlet 17, so that leakage of the collecting pipe 12 can be avoided. When the collection pipe 12 corresponds to the liquid inlet 17, the collected shower liquid can be injected into the collection tank 16 through the collection pipe 12.

Referring to fig. 8, the outer wall of the shaped cam 25 is provided with four protrusions and four grooves, and when the shaped cam 25 rotates, the protrusions and the grooves are matched with the rolling wheels 27, so that the sliding plate 26 can be driven to transversely reciprocate, and the lifting plate 20 is controlled to lift when the collecting box 15 rotates, so that the blockage of the cathode rod 21, the anode rod 22 and the water inlet pipe 23 to the rotation of the collecting box 15 is avoided.

Embodiment 2 referring to fig. 10-12, an improvement is made on the basis of embodiment 1, wherein a rotating rod 44 is rotatably connected to one side of the spray tower 1 through a base, and a plurality of third gears 45 are fixedly sleeved on the outer wall of the rotating rod 44. The outer wall of the spray tower 1 is rotationally sleeved with a plurality of toothed rings 42, a plurality of arc-shaped sliding blocks are arranged at the bottom of the toothed rings 42, the toothed rings 42 are in sliding fit with annular sliding rails of the outer wall of the spray tower 1 through the arc-shaped sliding blocks, the toothed rings 42 are used for enabling the toothed rings 42 to stably rotate, the toothed rings 42 are meshed with adjacent third gears 45, and the toothed rings 42 and corresponding rotating discs 6 are located on the same horizontal plane. A plurality of second magnet blocks 43 are fixedly embedded on the inner wall of the toothed ring 42, a plurality of first magnet blocks 41 are fixedly embedded on the outer wall of the rotating disk 6, and magnetic attraction force is generated between the second magnet blocks 43 and the first magnet blocks 41, so that the toothed ring 42 can drive the rotating disk 6 to rotate. The rotating rod 44 is in transmission connection with the upper clamping seat 38 through a synchronous wheel and a synchronous belt.

When the upper holder 38 and the reciprocating screw 33 rotate to peel the noble metal from the outer wall of the cathode rod 21, the upper holder 38 rotates by the synchronizing wheel, the synchronizing belt driving rotation lever 44 and the third gear 45. 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 between the second magnet block 43 and the first magnet block 41. The rotating disc 6 can break up the passing smoke, so that the smoke is uniformly distributed in the spray tower 1, and further the smoke is fully contacted with the spray liquid, and the spray effect is improved.

Through the above specific implementation mode, the recycling equipment can realize stripping and collecting of noble metals on the cathode rod, ensures full contact between flue gas and spray liquid in the spray tower, and improves recycling efficiency and quality.

The using method of the resource utilization equipment comprises the following steps:

S1, injecting flue gas into a spray tower 1 through an air inlet pipe 2, and when the flue gas passes through an air exhaust disc 3, under the cooperation of an arc groove 4 and an arc plate 5, the flue gas can drive the air exhaust disc 3 to rotate, so that the flue gas can be uniformly dispersed in the spray tower 1, the flue gas drifts upwards through a rotating disc 6, a plurality of air exhaust holes 7 arranged in the rotating disc 6 can further disperse the flue gas in the spray tower 1, a spray liquid sprayed by a later spray head 9 is convenient to fully contact with the flue gas, precious metal particles in the flue gas are combined with water to form suspended matters or dissolve in water (a solution containing specific chemical substances is used in the spray tower 1 to enhance the adsorption or reaction capacity to precious metals, the specific chemical substances can be alkaline substances such as sodium hydroxide (NaOH), calcium hydroxide (Ca (OH) ₂), chelating agents, oxidizing agents, reducing agents, heavy metal flocculating agents and the like, and the purified flue gas moves upwards through an active carbon layer 10 for further purification and is discharged through an air exhaust pipe 11;

S2, the spray liquid is discharged into a corresponding collecting tank 16 through a collecting pipe 12 after noble metal particles in the flue gas are adsorbed, when the spray liquid in the collecting tank 16 reaches a preset amount, a driving shaft 19 and a collecting box 15 are driven by a motor to rotate 90 degrees, a liquid inlet 17 is staggered with one end of the collecting pipe 12 when the collecting box 15 rotates, the collecting pipe 12 is closed, and when the subsequent collecting tank 16 rotates to the position of the collecting pipe 12, the collecting pipe 12 corresponds to the liquid inlet 17, so that the spray liquid can be discharged into the collecting tank 16 again;

S3, when the driving shaft 19 drives the collecting box 15 to rotate, the special-shaped convex disc 25 is synchronously driven to rotate, the sliding plate 26 moves outwards 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 upwards until the cathode rod 21, the anode rod 22 and the water inlet pipe 23 are separated from the corresponding collecting tank 16, until a new collecting tank 16 rotates to a corresponding position, the sliding plate 26 moves downwards under the pushing of the special-shaped convex disc 25, the lifting plate 20 can be further moved downwards again, the cathode rod 21, the anode rod 22 and the water inlet pipe 23 are re-extended into the corresponding collecting tank 16 (the collecting tank 16 for collecting the spray liquid before the time), then the cathode rod 21 and the anode rod 22 are electrified to electrolyze the spray liquid, precious metals in the spray liquid are separated, and the precious metals are attached to the cathode rod 21, and the cathode rod 21, the anode rod 22 and the water inlet pipe 23 are symmetrically placed, so when the collecting box 15 rotates by 90 DEG, the electrolyzed spray liquid is rotated to the position of the water inlet pipe 23 after the pH value is adjusted by adding electrolyte component, and the spray liquid is injected into the corresponding position of the water inlet pipe 23, and the flue gas is sprayed into the water inlet pipe 16 for spraying liquid in the collecting tank 8, and the spray liquid is further sprayed into the collecting tank 8;

S4, after a large amount of noble metal is attached to the cathode rod 21, the noble metal is required to be stripped, at the moment, the cathode rod 21 is taken out from the lifting plate 20 and placed in the lower clamping seat 39, the collecting plate 31 is driven by the rotating nut block 32 to move upwards, the collecting plate 31 drives the cathode rod 21 to move upwards through the lower clamping seat 39, the top end of the cathode rod 21 extends into the upper clamping seat 38, the upper clamping seat 38 and the lower clamping seat 39 are matched to clamp the cathode rod 21, as the outer diameter of the cathode rod 21 is unchanged, the cutter 35 is attached to the outer wall of the cathode rod 21, then the motor drives the reciprocating screw 33 to rotate, the reciprocating screw 33 and the upper clamping seat 38 are meshed and driven by the first gear 36 and the second gear 37, so that the reciprocating screw 33 drives the lifting mounting block 34 and the cutter 35 to slowly descend, the upper clamping seat 38 synchronously drives the cathode rod 21 to rotate, the cutter 35 can strip the noble metal attached to the cathode rod 21, and the stripped noble metal falls into the collecting groove 40, and later collection is facilitated;

S5, when the upper clamping seat 38 and the reciprocating screw 33 rotate to strip noble 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 toothed ring 42 to rotate, the toothed ring 42 drives the rotating disc 6 to rotate through the magnetic attraction between the second magnet block 43 and the first magnet block 41, and then the rotating disc 6 can scatter the passing smoke, so that the smoke is further distributed in the spray tower 1, and the smoke is fully contacted with the spray liquid.

The drawings in the present description are only schematic in nature, in which the sizes and shapes of the components shown are not actually limited, but are merely schematic representations. In the actual implementation process, each component can be reasonably configured and adjusted according to specific requirements and actual conditions.

The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.

Claims

1. The industrial kiln flue gas noble metal purifying equipment is used for purifying and separating noble metals in flue gas and is characterized by comprising a spray tower (1), wherein an air inlet pipe (2) is fixedly penetrated at the bottom of the spray tower, an exhaust pipe (11) is fixedly communicated with the top of the spray tower, and a collecting pipe (12) is arranged at the bottom of the spray tower;

the purifying structure comprises a plurality of groups of spraying units which are arranged from top to bottom, each group of spraying units comprises a rotating disc (6) and a spraying pipe (8) positioned above the rotating disc, the rotating disc (6) is rotatably arranged in the spraying tower (1) and provided with a plurality of exhaust holes (7), and a plurality of spray heads (9) are arranged at the bottom of the spraying pipe (8);

The activated carbon layer (10) is fixed in the spray tower (1) and is positioned above the purifying structure;

The flue gas enters the spray tower (1) through the air inlet pipe (2), then sequentially passes through the exhaust holes (7) of the rotating disc (6) to be dispersed, the spray liquid is downwards sprayed through the spray head (9) to contact with the flue gas, precious metal particles are captured by the spray liquid to form suspended matters or dissolved, purified flue gas is filtered by the activated carbon layer (10) and then is discharged by the exhaust pipe (11), the spray liquid is recycled through the collecting pipe (12), the top end of the air inlet pipe (2) extends into the spray tower (1) and is rotationally connected with the exhaust disc (3), a plurality of arc grooves (4) are circumferentially formed in the side wall of the exhaust disc (3), an arc plate (5) is fixedly arranged in each arc groove (4), and when the flue gas is discharged through the arc grooves (4), the exhaust disc (3) is driven to be rotated, so that the flue gas is uniformly dispersed, and the spray liquid contains alkaline solution or chelating agent, and the method further comprises:

A cylinder (14) and a U-shaped frame (18) are fixed at the top of the bottom plate (13), a collecting box (15) is rotationally arranged in the cylinder (14), and four collecting tanks (16) are arranged in the collecting box (15);

The driving shaft (19) is rotatably connected to the top of the U-shaped frame (18) and the bottom end of the driving shaft is fixed with the collecting box (15);

The conversion structure comprises a lifting plate (20) and a special-shaped convex disc (25) which are sleeved on the outer wall of the driving shaft (19), wherein the lifting plate (20) is connected with a sliding plate (26) through a connecting rod (28), and the sliding plate (26) is matched with the special-shaped convex disc (25) through a rolling wheel (27) to realize lifting;

An electrolysis member including a cathode rod (21) and an anode rod (22) penetrating the elevating plate (20);

the water inlet pipe (23) is fixedly penetrated through the lifting plate (20) and communicated with the spray pipe (8) through the water pump (24).

2. The industrial furnace flue gas precious metal purifying apparatus according to claim 1, wherein the outer wall of the profiled convex disc (25) is provided with four protrusions and grooves, and the driving shaft (19) drives the rolling wheel (27) to move the sliding plate (26) laterally through the protrusions when rotating, and then controls the lifting plate (20) to lift 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 collecting tank (16).

3. The industrial kiln flue gas precious metal purification device according to claim 2, wherein the side wall of the collecting box (15) is provided with a liquid inlet (17), the collecting pipe (12) penetrates through the cylinder (14) and is in dynamic sealing connection with the liquid inlet (17), and the spray liquid is injected into the collecting tank (16) through the collecting pipe (12).

4. The industrial kiln flue gas precious metal cleaning apparatus according to claim 3, further comprising a stripping structure comprising:

a fixing plate (29) fixed on one side of the U-shaped frame (18) and rotationally connected with the upper clamping seat (38) and the reciprocating screw rod (33);

The collecting plate (31) is sleeved on the fixed rod (30) in a sliding manner and is adjusted in height through the nut block (32);

A lifting installation block (34) which is matched with the spiral groove of the reciprocating screw rod (33) through a sliding block, and one side of the lifting installation block is fixed with a cutter (35);

wherein the cathode rod (21) is clamped between the upper clamping seat (38) and the lower clamping seat (39), and the reciprocating screw rod (33) rotates to drive the cutter (35) to descend and strip noble metal on the surface of the cathode rod (21).

5. The industrial kiln flue gas precious metal purifying apparatus according to claim 4, wherein the upper clamping seat (38) and the reciprocating screw (33) are in meshed transmission through a first gear (36) and a second gear (37), and the diameter of the second gear (37) is larger than that of the first gear (36), so that the rotating speed of the reciprocating screw (33) is lower than that of the upper clamping seat (38).

6. The industrial kiln flue gas precious metal purification equipment according to claim 5, wherein a rotating rod (44) is rotatably connected to the outer side of the spray tower (1), the rotating rod (44) is meshed with a toothed ring (42) through a third gear (45), a second magnet block (43) is arranged on the inner wall of the toothed ring (42), a first magnet block (41) is arranged on the outer wall of the rotating disc (6), the rotating disc (6) is driven to rotate along with the toothed ring (42) by magnetic attraction, and the rotating rod (44) is in transmission connection with an upper clamping seat (38) through a synchronous belt.