CN110804699B

CN110804699B - Hazardous waste recycling production line

Info

Publication number: CN110804699B
Application number: CN201911095824.0A
Authority: CN
Inventors: 熊其杰; 杨旭; 陶正艳
Original assignee: Ningbo Shuangneng Environmental Protection Technology Co Ltd
Current assignee: Ningbo Shuangneng Environmental Protection Technology Co Ltd
Priority date: 2019-11-11
Filing date: 2019-11-11
Publication date: 2020-06-09
Anticipated expiration: 2039-11-11
Also published as: CN110804699A; CN111574003B; CN111574003A

Abstract

The invention discloses a hazardous waste recycling production line, aiming at providing a hazardous waste recycling production line with reasonable process layout, production efficiency improvement, energy conservation and emission reduction, and the key points of the technical scheme are as follows: the smelting device comprises a smelting furnace arranged on the right side of the storage tower, a feeding port of the smelting furnace receives the electroplating sludge from the storage tower through a conveyor belt and manufactures the electroplating sludge into a melt through roasting, a water jacket for cooling the furnace body is arranged on the outer side of the smelting furnace and is connected with a water tank through a pipeline, and the water tank is arranged on a mounting frame erected on the outer side of the smelting furnace; the collecting tank is arranged at the lower side of the smelting furnace and used for receiving the melt smelted by the smelting furnace, and a slag discharging port used for discharging the slag on the upper layer of the melt is arranged at the upper end of the collecting tank; the slag fishing device is arranged on one side of the collecting tank and is used for collecting waste slag discharged from the slag discharging port; the invention is suitable for the technical field of environment-friendly production lines.

Description

Hazardous waste recycling production line

Technical Field

The invention relates to the technical field of environment-friendly production lines, in particular to a hazardous waste recycling production line.

Background

The electroplating industry produces a large amount of electroplating sludge containing heavy metals such as Cu, Ni and the like, and the components are very complex due to different electroplating production processes. The harm of the electroplating sludge to the environment and the human health has attracted great attention of people and is one of the public hazards acknowledged at home and abroad. The electroplating sludge contains various metal components, the quality of the electroplating sludge is higher than that of metal-rich ore, and the electroplating sludge is a cheap secondary renewable resource. In order to recover metal resources in electroplating sludge and realize sludge harmlessness, smelting is usually adopted to obtain a high-temperature melt subjected to primary impurity removal, the high-temperature melt is recovered, sulfuric acid is used as a leaching agent, and products such as copper sulfate, nickel sulfate and the like are obtained through acid leaching, impurity removal, extraction, crystallization and drying.

Disclosure of Invention

Aiming at the defects of the prior art, the hazardous waste recycling production line is reasonable in flow layout, improves the production efficiency, and saves energy and reduces emission.

A hazardous waste recycling line, the line comprising:

the pretreatment device is used for sequentially drying and granulating the electroplating sludge, and the pretreated electroplating sludge is stored in the storage tower;

the smelting device comprises a smelting furnace arranged on the right side of the storage tower, a feeding port of the smelting furnace receives the electroplating sludge from the storage tower through a conveyor belt and manufactures the electroplating sludge into a melt through roasting, a water jacket for cooling the furnace body is arranged on the outer side of the smelting furnace and is connected with a water tank through a pipeline, and the water tank is arranged on a mounting frame erected on the outer side of the smelting furnace;

the collecting tank is arranged at the lower side of the smelting furnace and used for receiving the melt smelted by the smelting furnace, and a slag discharging port used for discharging the slag on the upper layer of the melt is arranged at the upper end of the collecting tank;

the slag fishing device is arranged on one side of the collecting tank and is used for collecting waste slag discharged from the slag discharging port;

and the molding device is arranged on the other side of the collecting pool and is used for receiving the melt from the collecting pool and molding the melt.

After adopting the structure, compared with the prior art, the hazardous waste recycling production line has the following advantages: when the device is used, after the electroplating sludge to be treated can be dried and granulated by workers, the electroplating sludge in the granulating device can obtain a larger contact area in the smelting process, the time required by smelting is shortened, the smelting effect is improved, and meanwhile, the device has the characteristics of energy consumption reduction, energy conservation and environmental protection;

a material conveying belt is arranged between the feeding hole of the smelting furnace and the discharging hole of the storage tower, so that the material conveying and feeding are facilitated, and the production efficiency is improved;

the smelting device is smelted electroplating sludge and is made into the fuse-element, and after collecting pit discharge upper waste residue, can obtain the fuse-element that impurity content is less relatively, reduces the required flow of follow-up refining, has promoted production efficiency and yields, and on the other hand, the fuse-element is convenient for of the unified shape after the moulding transport, and convenient the piling up has reduced occupation space.

As an improvement of the invention, the pretreatment device comprises a machine body which is arranged in a closed manner, the machine body comprises a drying section, a roller section and a crushing section which are sequentially spliced, the drying section comprises a feeding end, a conveying line laid in the drying section, a skip car used for bearing materials and a hot air assembly arranged above the conveying line, and the heating assembly is respectively communicated with the roller section and the crushing section; the roller section comprises a roller and a plurality of sieve plates arranged at intervals along the axial direction, sieve holes for smaller materials to pass through are formed in the sieve plates, the upper end of the roller is connected with the tail end of the conveying line, a roller discharge hole connected with the crushing section is formed in the lower end of the roller, and the sieve plates are obliquely arranged and form a material channel for limiting the materials to pass through from top to bottom; the crushing section comprises a material chamber communicated with a discharge port of the roller, a crushing roller group, a third motor for driving the crushing roller group, a stirring assembly arranged below the crushing roller group and a fourth motor for driving the stirring assembly are arranged in the material chamber, and a gate for controlling material conveying is further arranged at the bottom of the material chamber; the storage tower sets up in the left side of smelting furnace, the material area of passing has the horizontal segment and connects the slope section at the horizontal segment tail end and set up in the unloading section of slope section tail end, the horizontal segment sets up in the feed opening department of storage tower, the unloading section sets up with the feed inlet of smelting furnace relatively. The electroplating sludge is continuously heated by the heating assembly in the transportation process, so that the electroplating sludge is dried, and the transportation and the subsequent processing are convenient; the sieve plates are arranged at intervals along the axial direction, and electroplating sludge enters from the upper end of the drum, so that the electroplating sludge is in friction collision with the surface of the sieve plates along with the rotation of the drum, the electroplating sludge with smaller particles can directly fall to a discharge port through sieve holes, the electroplating sludge with larger particles runs downwards through the material channel and is continuously screened and collided with the inner wall of the drum, caking electroplating sludge is scattered, the electroplating sludge is kept in a loose state, and the drying effect on the electroplating sludge is improved; through the arrangement of the crushing roller group, the electroplating sludge falls to the surface of the crushing roller group and is crushed into fine particles, so that the materials are conveniently stored and reprocessed, meanwhile, the stirring assembly continuously stirs the electroplating sludge in the crushing process, the electroplating sludge is prevented from crusting and caking in a material box for a long time, the heating assembly is respectively communicated with the roller section and the crushing section, so that hot air can enter the roller and the material box, the electroplating sludge has a better drying effect, the occupied space is reduced, and the modularized arrangement of the whole machine body greatly facilitates the transportation and the disassembly and assembly; the structural design of storage tower promotes the continuity of smelting furnace feeding, adopts and passes the material area to pass the material, has promoted the material loading efficiency.

As an improvement of the invention, a flue gas treatment device is arranged at the exhaust gas exhaust end of the smelting furnace, the flue gas treatment device comprises a flue gas heat exchange device, and the flue gas heat exchange device comprises: the heat exchanger comprises a cylinder body arranged in a shell, wherein end covers are respectively arranged at two ends of the cylinder body in a sealing way, two groups of baffles are arranged on the cylinder body between the two groups of end covers, and the two groups of baffles divide the cylinder body into a heat exchange cavity with a closed space, an air inlet cavity at one end of the heat exchange cavity and an air outlet cavity at the other end of the heat exchange cavity;

the cylinder body is provided with a heat exchange air inlet and a heat exchange air outlet which are communicated with the heat exchange cavity, one group of end covers is provided with a waste gas inlet communicated with the air inlet cavity, and the other group of end covers is provided with a waste gas outlet communicated with the air outlet cavity;

the heat exchange cavity is internally provided with an air duct, one open end of the air duct extends to the air inlet cavity, the other open end extends to the exhaust cavity, the two open ends of the air duct are respectively provided with a dust cover, the dust cover comprises a sleeve sleeved at the end part of the air duct and a dust screen arranged in the inner cavity of the sleeve, and the sleeve at the outer end of the dust screen is further provided with a blocking cover. The structural design of the heat exchange chamber, the air inlet chamber and the air exhaust chamber has the characteristics of simple structure, reasonable design and low cost; when the catalyst is used, after the outside air is introduced through the heat exchange air inlet and exchanges heat with the waste gas in the air guide pipeline, the heat exchanged air can be used as a catalyst in the heating or warming processing operation process of some smelting furnaces and other devices, so that the resource utilization rate is improved, the energy is saved, the emission is reduced, and meanwhile, the production cost is reduced; the dust cover arranged at the opening end of the gas guide pipe reduces some particles in the waste gas from entering the pipeline, and is convenient to maintain by matching with the structural design of the end cover, so that the service life of the device is prolonged; set up the waste gas that the separation cover avoided getting into and directly strike the dust screen, further promoted life, have the function of the promotion heat transfer effect of slowing down waste gas flow rate simultaneously.

As an improvement of the invention, the number of the air guide tubes is a plurality of groups, the air guide tubes are transversely and uniformly arranged on the baffle plate, and the air guide tubes are also provided with supporting seats matched with the surface of the inner wall of the cylinder body. Through the improvement, the stability of the installation of the air duct in the device is improved.

As an improvement of the present invention, the flue gas treatment device further comprises a denitration device, and the denitration device comprises: the denitration tank comprises a denitration tank body, wherein an exhaust port is formed in the upper end of the denitration tank body, an air inlet is formed in the lower end of the denitration tank body, a first spraying device and a second spraying device are sequentially arranged in the inner cavity of the denitration tank body from the air inlet to the exhaust port, and a turbulence device is arranged in the inner cavity of the denitration tank body close to the second spraying device;

the vortex device includes the second motor and installs the axis body on second motor output, the axis body extends to denitration jar body inner chamber, and is located the blade that is used for the vortex is installed to the axis body of denitration jar body inner chamber, second spray set is including being the shower head that cyclic annular equipartition set up in denitration jar body inner chamber, the output of shower head sets up towards the axial lead of axis body. The first spraying device and the second spraying device which are arranged in the inner cavity of the denitration tank body increase the contact time of the waste gas and the reaction liquid, and improve the denitration effect; the setting is its vortex waste gas of vortex device at denitration jar body inner chamber when rotatory and make it and shower nozzle spun reaction liquid misce bene, is cyclic annular equipartition setting at the shower nozzle of denitration tower body inner chamber and the output of shower nozzle sets up towards the axial lead of axis body, reduces the blind area of denitration tower body inner chamber, has further promoted except that the nitre effect.

As an improvement of the invention, the output end of the spray header is arranged towards the axial lead of the shaft body in a horizontal angle, the second spray device further comprises a water diversion pipe, the spray header is arranged on the water diversion pipe, and the water diversion pipe is connected with the output end of a circulating pump through a pipeline; the number of the water distribution pipes is at least 5, 5 groups of the water distribution pipes are vertically installed and fixed in an inner cavity of the denitration tank body at equal intervals, and valves are respectively arranged between 5 groups of the water distribution pipes and the pipelines; the spray header adopts an atomization spray header. The output end of the spray head is arranged towards the axial lead of the shaft body at a horizontal angle, so that the contact time of the reaction liquid sprayed out of the spray head and the waste gas in the inner cavity of the denitration tank body is prolonged, and the reaction effect is improved; the contact area of the reaction liquid and the waste gas is increased by adopting the atomization spray head, and the denitration effect is further improved.

The tooling frame is provided with a slag salvaging chamber for salvaging slag and a conveying line for conveying the slag salvaging chamber, and the conveying line sequentially comprises a slag salvaging station, a conveying uplink station, a blanking station and a conveying downlink station;

the slag salvaging station is arranged in a slag salvaging pool, and a feed inlet of the slag salvaging pool is connected to a collecting pool at the lower end of a slag discharge port through a slag discharge pipeline;

the conveying line comprises a transmission chain and a connecting rod arranged on the transmission chain, the slag salvaging chamber is arranged on the connecting rod, a slag salvaging chamber material port and a liquid discharge hole are arranged on the slag salvaging chamber, and the slag salvaging chamber material port is obliquely arranged along the conveying direction of the conveying line;

the tool frame is provided with a baffle, the baffle is provided with a cavity for covering the transmission uplink station, the blanking station and the transmission downlink station, the baffle is further provided with a blanking port matched with the blanking station, and rotating shafts for driving the slag salvaging box to horizontally turn are respectively arranged on the tool frame between the blanking station and the transmission downlink station and between the transmission downlink station and the slag salvaging station. The conveying line is sequentially provided with a slag fishing station, a transmission uplink station, a blanking station and a transmission downlink station, so that the production steps are optimized, and the operation flow is reduced; the slag salvaging box is arranged, so that the loading capacity during slag salvaging is improved, and the production efficiency is improved; meanwhile, when the device is used in cooperation with a baffle, waste residue is effectively reduced from being scattered, the tidiness of the device is improved, secondary operation is reduced, and the environment is protected; the material port is obliquely arranged along the conveying direction of the conveying line, when the slag fishing box enters the blanking station, the rotating shaft between the blanking station and the transmission downlink station drives the slag fishing box to horizontally turn over and enter the transmission downlink station, and then the material can be removed from the slag fishing box; the pivot between the station down and the sediment station of salvaging orders about the sediment railway carriage or compartment level upset and gets into the sediment station of salvaging, can make the sediment railway carriage or compartment collect the waste residue in the waste residue pond, has promoted degree of automation, has reduced artificial tired degree.

As an improvement of the invention, a motor frame is arranged on the tool frame, a speed reduction motor is arranged on the motor frame, the conveying line further comprises a connecting plate fixed on the tool frame, chain wheels meshed and connected with the transmission chains are respectively arranged on the connecting plate and the rotating shaft, the output end of the speed reduction motor is in transmission fit with the chain wheels to drive the transmission chains to rotate, and then the slag salvaging compartment is driven to circularly and repeatedly run at a slag salvaging station, a transmission uplink station, a blanking station and a transmission downlink station. The speed reducing motor is arranged, and the slag salvaging chamber is driven to circularly and repeatedly run at the slag salvaging station, the transmission uplink station, the blanking station and the transmission downlink station through the speed reducing motor, so that the production flow is optimized, and the production efficiency is improved; the structural design of the conveying line also has the characteristics of high stability, high combinability and convenience in maintenance.

As an improvement of the invention, the slag discharge port is arranged at the upper end of the collecting tank, an air blowing device is also arranged between the slag discharge port and the slag discharge pipeline, and the output end of the air blowing device is arranged towards the waste slag feed inlet of the slag salvaging tank; the molding device comprises a mold cavity for receiving the melt and a die plate arranged on the mold cavity for die-molding the melt. The gas blowing device that the collecting pit set up to the output orientation of gas blowing device drags for the feed inlet setting in sediment pond for the passing through of waste residue makes things convenient for follow-up sediment of dragging for, effectively reduces the waste residue and on arranging sediment pipeline accumulational probability.

Drawings

Fig. 1 is a schematic structural view of the present invention.

FIG. 2 is a schematic view of the structure of the crushing apparatus in the pretreatment apparatus of the present invention.

FIG. 3 is a schematic structural diagram of a flue gas heat exchange device of the present invention.

Fig. 4 is a schematic diagram of an explosion structure of the flue gas heat exchange device of the invention.

FIG. 5 is a schematic view of a dust cover structure in the flue gas heat exchange device of the present invention.

FIG. 6 is a schematic view of the denitration apparatus according to the present invention.

FIG. 7 is a schematic view showing the structure of a second denitration apparatus in the denitration apparatus of the present invention.

Fig. 8 is a structural schematic diagram of the slag salvaging device of the invention.

Fig. 9 is a schematic diagram of the structure of the conveying line in the slag salvaging device of the invention.

Fig. 10 is a schematic structural view of a slag salvaging box in the slag salvaging device of the present invention.

Fig. 11 is an enlarged view of the structure at a in fig. 10 according to the present invention.

Fig. 12 is a partial structural schematic of the present invention.

Fig. 13 is an enlarged view of the structure at B in fig. 12 according to the present invention.

Shown in the figure: 1. a material storage tower; 2. a smelting furnace; 2.1, water jacket; 2.11, a water tank; 3.1, a horizontal section; 3.2, an inclined section; 3.3, a blanking section; 4. a mounting frame; 5. a collection tank; 51. a slag discharge port 6 and a slag fishing device; 71. a mold cavity; 72. pressing the template; 8. a drying section; 81. a conveying line; 9. a drum section; 91. a drum; 911. a roller discharge port, 10 and a crushing section; 101. a material compartment; 11. a heating assembly; 12. a crushing roller set; 121. a third motor; 13. a stirring assembly; 131. a fourth motor 14, a cylinder; 141. an end cap; 142. a first baffle plate; 143. a heat exchange chamber; 144. an air intake chamber; 145. exhaust chambers, 146, heat exchange air inlets; 147. a heat exchange exhaust port; 148. an exhaust gas inlet; 149. an exhaust gas outlet; 15. an air duct; 151. a supporting seat; 16. a dust cover; 161. a sleeve; 162. a dust screen; 17. a barrier cover; 18. a denitration tank body; 181. an exhaust port; 182. an air inlet; 19. a first spraying device; 20. a second spraying device; 201. a shower head; 21. a second motor; 211. a shaft body; 212. a blade; 22. a water diversion pipe; 23. a tool rack; 231. a slag fishing station; 232. transmitting an uplink station; 233. a blanking station; 234. a downlink station is transmitted; 24. fishing out a slag pool; 241. a slag discharge pipeline; 251. a connecting rod; 26. a slag salvaging compartment; 261. a slag fishing box material port; 262. a drain hole; 27. a second baffle; 271. a feeding port; 28. a rotating shaft; 29. a reduction motor; 30. a connecting plate; 31. a sprocket; 32. a blowing device; 33. mounting a plate; 34. a feed hopper.

Detailed Description

The invention is further described with reference to the following figures and specific examples.

Referring to fig. 1 to 13, a hazardous waste recycling line according to the present invention includes:

the pretreatment device is used for sequentially drying and granulating the electroplating sludge, and the pretreated electroplating sludge is stored in the storage tower 1;

the smelting device comprises a smelting furnace 2 arranged on the right side of a storage tower 1, a feeding port of the smelting furnace 2 receives electroplating sludge from the storage tower 1 through a material conveying belt and manufactures the electroplating sludge into a melt through roasting, a water jacket 2.1 for cooling a furnace body is arranged on the outer side of the smelting furnace 2, the water jacket 2.1 is connected with a water tank 2.11 through a pipeline, and the water tank 2.11 is arranged on a mounting frame 4 erected on the outer side of the smelting furnace 2;

the collecting tank 5 is arranged at the lower side of the smelting furnace 2, receives the melt smelted by the smelting furnace 2, and the upper end of the collecting tank 5 is provided with a slag discharge port 51 for discharging the slag on the upper layer of the melt;

the slag fishing device 6 is arranged on one side of the collecting pool 5 and is used for collecting waste slag discharged from the slag discharge port 51;

and a molding device 7, wherein the molding device 7 is arranged at the other side of the collecting pool 5 and is used for receiving the melt from the collecting pool 5 and molding the melt.

The pretreatment device comprises a machine body which is arranged in a closed manner, the machine body comprises a drying section 8, a roller section 9 and a crushing section 10 which are sequentially spliced, the drying section 8 comprises a feeding end, a conveying line 81 laid in the drying section 8, a skip 82 used for bearing materials and a heating assembly 11 arranged above the conveying line 81, and the heating assembly 11 is respectively communicated with the roller section 9 and the crushing section 10; the roller section 9 comprises a roller 91 and a plurality of sieve plates arranged at intervals along the axial direction, sieve holes for smaller materials to pass through are arranged on the sieve plates, the upper end of the roller 91 is connected with the tail end of the conveying line 81, a roller discharge hole connected with the crushing section 10 is arranged at the lower end of the roller 91, and the sieve plates are obliquely arranged and form a material channel for limiting the materials to pass through from top to bottom; the crushing section 10 comprises a material chamber 101 communicated with a roller discharge hole 911, a crushing roller group 12, a third motor 121 used for driving the crushing roller group 12, a stirring assembly 13 arranged below the crushing roller group 12 and a fourth motor 131 used for driving the stirring assembly 13 are arranged in the material chamber 101, and a gate used for controlling material conveying is further arranged at the bottom of the material chamber 101; the material conveying belt is provided with a horizontal section 3.1, an inclined section 3.2 connected to the tail end of the horizontal section 3.1 and a blanking section 3.3 arranged at the tail end of the inclined section 3.2, the horizontal section 3.1 is arranged at the blanking port of the material storage tower 1, and the blanking section 3.3 is arranged opposite to the feeding port of the smelting furnace 2. Smelting furnace 2's exhaust gas exhaust end is provided with flue gas processing apparatus, flue gas processing apparatus includes flue gas heat transfer device, flue gas heat transfer device includes: the heat exchanger comprises a cylinder 14, wherein end covers 141 are respectively hermetically installed at two ends of the cylinder 14, two groups of first baffles 142 are arranged on the cylinder 14 between the two groups of end covers 141, and the cylinder 14 is divided into a heat exchange chamber 143 with a closed space, an air inlet chamber 144 at one end of the heat exchange chamber 143 and an air outlet chamber 145 at the other end of the heat exchange chamber 143 by the two groups of first baffles 142;

a heat exchange air inlet 146 and a heat exchange air outlet 147 which are communicated with the heat exchange cavity 143 are arranged on the cylinder 14, wherein an exhaust air inlet 148 which is communicated with the air inlet cavity 144 is arranged on one group of the end covers 141, and an exhaust air outlet 149 which is communicated with the exhaust cavity 145 is arranged on the other group of the end covers 141;

an air duct 15 is arranged in the heat exchange cavity 143, one open end of the air duct 15 extends to the air inlet cavity 144, the other open end extends to the air outlet cavity 145, dust covers 16 are respectively arranged at the two open ends of the air duct 15, each dust cover 16 comprises a sleeve 161 sleeved at the end of the air duct 15 and a dust screen 162 arranged in the inner cavity of the sleeve 161, and a blocking cover 17 is further arranged on the sleeve 161 at the outer end of the dust screen 162.

The number of the air ducts 15 is a plurality of groups, the air ducts 15 are transversely and uniformly arranged on the first baffle 142, and the air ducts 15 are also provided with supporting seats 151 matched with the inner wall surface of the cylinder 14.

Flue gas processing apparatus still includes denitrification facility, denitrification facility includes: the denitration tank comprises a denitration tank body 18, wherein an exhaust port 181 is formed in the upper end of the denitration tank body 18, an air inlet 182 is formed in the lower end of the denitration tank body 18, a first spraying device 19 and a second spraying device 20 are sequentially arranged in the inner cavity of the denitration tank body 18 from the air inlet 182 to the exhaust port 181 of the denitration tank body 18, and a turbulence device is arranged in the inner cavity of the denitration tank body 18 close to the second spraying device 20;

vortex device includes second motor 21 and installs the axis body 211 on second motor 21 output, axis body 211 extends to denitration jar body 18 inner chamber, and is located the blade 212 that is used for the vortex is installed to the axis body 211 in denitration jar body 18 inner chamber, second spray set 20 is including being cyclic annular equipartition setting shower head 201 in denitration jar body 18 inner chamber, shower head 201's output sets up towards the axial lead of axis body 211. The output end of the spray header 201 is arranged towards the axis of the shaft body 211 in a horizontal angle, the second spray device 20 further comprises a water distribution pipe 22, the spray header 201 is arranged on the water distribution pipe 22, and the water distribution pipe 22 is connected with the output end of a circulating pump through a pipeline; the number of the water distribution pipes 22 is at least 5, 5 groups of the water distribution pipes 22 are vertically installed and fixed in the inner cavity of the denitration tank body 18 at equal intervals, and valves are respectively arranged between the 5 groups of the water distribution pipes 22 and the pipeline; the spray header 201 adopts an atomization spray header.

This drag for sediment device 6 includes: the slag salvaging device comprises a tool frame 23, wherein a slag salvaging box 26 for salvaging slag and a slag salvaging conveying line for conveying the slag salvaging box 26 are arranged on the tool frame 23, and the slag salvaging conveying line sequentially comprises a slag salvaging station 231, an uplink conveying station 232, a blanking station 233 and a downlink conveying station 234;

the slag salvaging station 231 is arranged in a slag salvaging pool 24, and a feed inlet of the slag salvaging pool 24 is connected to the collecting pool 5 at the lower end of the slag discharging port 51 through a slag discharging pipeline 241;

the conveying line 81 comprises a transmission chain (25) and a connecting rod 251 installed on the transmission chain (25), the slag salvaging box 26 is installed on the connecting rod 251, a slag salvaging box material port 261 and a liquid discharge hole 262 are arranged on the slag salvaging box 26, and the slag salvaging box material port 261 is obliquely arranged along the conveying direction of the slag salvaging conveying line;

the tool frame 23 is provided with a second baffle 27, the second baffle 27 is provided with a cavity for covering the transmission uplink station 232, the blanking station 233 and the transmission downlink station 234, the second baffle 27 is further provided with a blanking port 271 matched with the blanking station 233, and the tool frame 23 between the blanking station 233 and the transmission downlink station 234 and between the transmission downlink station 234 and the slag salvaging station 231 is respectively provided with a rotating shaft 28 for driving the slag salvaging box 26 to horizontally overturn. The tool frame 23 is provided with a motor frame, the motor frame is provided with a speed reducing motor 29, the conveying line 81 further comprises a connecting plate 30 fixed on the tool frame 23, chain wheels 31 meshed with the transmission chains are respectively arranged on the connecting plate 30 and the rotating shaft 28, the output end of the speed reducing motor 29 is in transmission fit with the chain wheels 31 to drive the transmission chains to rotate, and then the slag salvaging box 26 is driven to circularly and repeatedly run on the slag salvaging station 231, the transmission uplink station 232, the blanking station 233 and the transmission downlink station 234. Arrange the upper end at collecting pit 5 to establish at cinder notch 51, still be provided with gas blowing device 32 between cinder notch 51 and the sediment pipeline 241, gas blowing device 32's output orientation drags for the waste residue feed inlet setting of cinder notch 24.

A mounting plate 33 is arranged on the mounting frame 4 at the upper end of the smelting furnace 2, the water tank 2.11 is arranged on the mounting plate 33, and a feed hopper 34 communicated with a material port of the smelting furnace 2 is arranged on the mounting plate 33; the molding device 7 includes a mold cavity 71 for receiving the melt and a die plate 72 provided on the mold cavity 71 for die-molding the melt into blocks.

The working principle is as follows:

the pretreatment operation process comprises the following steps: and drying and crushing the electroplating sludge to be treated in sequence to obtain granular electroplating sludge. The working personnel place the electroplating sludge to be treated at the inlet side of the drying conveyor line 81, the electroplating sludge to be treated enters the drying section 8 through the conveyor line 81, the heating assembly 11 continuously heats the air in the machine body and conveys hot air to the conveyor line 81; the materials on the conveying line 81 reach the tail end of the conveying line 81 and then are poured into the roller 91, and the materials are screened by the screen plate along with the rotation of the roller 91 and collide with the inner wall to be in a relatively loose state; the materials in the roller 91 fall onto the roller surface of the crushing roller group 12 to form relatively fine particles after passing through the roller discharge hole 911, meanwhile, in the process of movement of the roller 91 and the crushing roller group 12, the heating component 11 continuously conveys hot air into the roller 91 and the material chamber 101, the materials obtain more comprehensive and uniform drying effect under the action of the stirring component 13, and after the gate is opened, the stirring component 13 conveys the materials into the gate opening at the bottom of the material chamber 101;

the worker transfers the granulated electroplating sludge discharged from the gate opening at the bottom of the material compartment 101 to the storage tower 1 through the material conveying device.

The smelting operation process comprises the following steps: the working personnel open the storage tower 1 to discharge the granulated electroplating sludge, and transfer the granulated electroplating sludge to the feed hopper 34 of the smelting furnace 2 through the material transfer belt 3, and the granulated electroplating sludge enters the smelting furnace 2 and is roasted to obtain a high-temperature melt of the electroplating sludge; the water jacket 2.1 for cooling the furnace body is arranged at the side of the smelting furnace 2, so that the temperature of the furnace body is conveniently controlled, and the service life of the furnace body is prolonged;

the flue gas treatment process comprises the following steps: the waste gas exhaust end of the smelting furnace 2 is communicated with the waste gas inlet 182 of the cylinder 14 through a pipeline, the air inlet end of the smelting furnace 2 is communicated with the heat exchange exhaust port 147 of the cylinder 14 through a pipeline, the heat exchange air inlet 146 of the cylinder 14 is connected with an air blower through a pipeline, and the air blower blows the outside air into the heat exchange chamber 143 for heat exchange; the waste gas after heat exchange is discharged from the waste gas exhaust port 149 and is discharged into the environment after being subjected to gravity dust removal, flue gas cooling, cloth bag dust removal, flue gas denitration and flue gas desulfurization in sequence; smelting furnace, gravity dust removal, flue gas cooling, bag dust removal and flue gas desulfurization devices are all in the prior art well known to those skilled in the art, and are not described herein in detail.

Collecting and impurity removing operation flow: the collecting tank 5 collects the high-temperature melt roasted by the smelting furnace 2, and a slag discharging port 51 at the upper end of the collecting tank 5 discharges the waste slag on the upper layer of the melt, and the waste slag enters the slag fishing tank 24 through a slag discharging pipeline 241; the worker starts the speed reducing motor 29, the output end of the speed reducing motor 29 drives the transmission chain (25) to rotate through the linkage chain wheel 31, and the slag salvaging compartment 26 in the slag salvaging pool 24 salvages the waste slag in the slag salvaging pool 24; when the speed reducing motor 29 continues to rotate, the slag salvaging box 26 after slag salvaging is linked to enter the transmission uplink station 232 and run to the blanking station 233 from the transmission uplink station 232, after blanking is completed at the blanking station 233, the slag salvaging tank 24 is subjected to slag salvaging again through the transmission downlink station 234 and then enters the slag salvaging station 231, and the processes are repeated in a circulating manner according to the sequence;

the slag salvaging box material port 261 is obliquely arranged along the conveying direction of the conveying line 81, when the slag salvaging box 26 enters the blanking station 233, the rotating shaft 28 between the blanking station 233 and the conveying downlink station 234 drives the slag salvaging box 26 to horizontally overturn and enter the conveying downlink station 234, and then the material can be removed from the slag salvaging box 26; order about the upset of dragging for sediment railway carriage or compartment 26 level and get into dragging for sediment station 231 when transmitting down station 234 and dragging for the pivot 28 between the sediment station 231, can make to drag for sediment railway carriage or compartment 26 and collect the waste residue of dragging for in the sediment pond 24, promoted degree of automation, reduced artificial fatigue degree to transport the waste residue to the device that is used for storing the waste residue, make things convenient for the staff to waste residue reutilization, energy saving and emission reduction reduces the pollution to the environment simultaneously.

The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.

Claims

1. A hazardous waste recycling line, the line comprising:

the pretreatment device is used for sequentially drying and granulating the electroplating sludge, and the pretreated electroplating sludge is stored in the storage tower (1);

the smelting device comprises a smelting furnace (2) arranged on the right side of a storage tower (1), a feeding hole of the smelting furnace (2) receives electroplating sludge from the storage tower (1) through a material conveying belt and manufactures the electroplating sludge into melt through roasting, a furnace body cooling water jacket (2.1) is arranged on the outer side of the smelting furnace (2), a water tank (2.11) is connected to the water jacket (2.1) through a pipeline, and the water tank (2.11) is arranged on a mounting frame (4) erected on the outer side of the smelting furnace (2);

the collecting tank (5) is arranged at the lower side of the smelting furnace (2) and used for receiving the melt smelted by the smelting furnace (2), and a slag discharging port (51) used for discharging the slag on the upper layer of the melt is arranged at the upper end of the collecting tank (5);

the slag fishing device (6) is arranged on one side of the collecting pool (5) and is used for collecting waste slag discharged from the slag discharging port (51);

and the molding device is arranged on the other side of the collecting pool (5) and is used for receiving the melt from the collecting pool (5) and molding the melt.

2. The hazardous waste recycling line of claim 1, wherein: the pretreatment device comprises a machine body which is arranged in a closed manner, the machine body comprises a drying section (8), a roller section (9) and a crushing section (10) which are sequentially spliced, the drying section (8) comprises a feeding end, a conveying line (81) laid in the drying section (8), a skip car (82) used for bearing materials and a heating assembly (11) arranged above the conveying line (81), and the heating assembly (11) is respectively communicated with the roller section (9) and the crushing section (10); the roller section (9) comprises a roller (91) and a plurality of sieve plates which are arranged at intervals along the axial direction, sieve holes for smaller materials to pass through are formed in the sieve plates, the upper end of the roller (91) is connected with the tail end of the conveying line (81), a roller discharge hole (911) connected with the crushing section (10) is formed in the lower end of the roller (91), and the sieve plates are obliquely arranged to form a material channel for limiting the materials to pass through from top to bottom; the crushing section (10) comprises a material chamber (101) communicated with a roller discharge hole (911), a crushing roller set (12), a third motor (121) used for driving the crushing roller set (12), a stirring assembly (13) arranged below the crushing roller set (12) and a fourth motor (131) used for driving the stirring assembly (13) are arranged in the material chamber (101), and a gate used for controlling material conveying is further arranged at the bottom of the material chamber (101); the material conveying belt is provided with a horizontal section (3.1), an inclined section (3.2) connected to the tail end of the horizontal section (3.1) and a blanking section (3.3) arranged at the tail end of the inclined section (3.2), the horizontal section (3.1) is arranged at the blanking port of the material storage tower (1), and the blanking section (3.3) is arranged opposite to the feeding port of the smelting furnace (2).

3. A hazardous waste recovery processing production line according to claim 1, characterized in that the exhaust gas exhaust end of the smelting furnace (2) is provided with a flue gas treatment device, the flue gas treatment device comprises a flue gas heat exchange device, the flue gas heat exchange device comprises: the heat exchanger comprises a cylinder (14), wherein end covers (141) are respectively hermetically installed at two ends of the cylinder (14), two groups of first baffles (142) are arranged on the cylinder (14) between the two groups of end covers (141), and the cylinder (14) is divided into a heat exchange chamber (143) with a closed space, an air inlet chamber (144) located at one end of the heat exchange chamber (143) and an air outlet chamber (145) located at the other end of the heat exchange chamber (143) by the two groups of first baffles (142);

a heat exchange air inlet (146) and a heat exchange air outlet (147) which are communicated with the heat exchange cavity (143) are arranged on the cylinder (14), wherein a waste gas inlet (148) which is communicated with the air inlet cavity (144) is arranged on one group of end covers (141), and a waste gas outlet (149) which is communicated with the air outlet cavity (145) is arranged on the other group of end covers (141);

be provided with air duct (15) in heat transfer cavity (143), an open end of air duct (15) extends to air inlet cavity (144), and another open end extends to exhaust cavity (145) to dust cover (16) are installed respectively to the both open ends of air duct (15), dust cover (16) are including cup jointing sleeve (161) at air duct (15) tip and installing dust screen (162) at sleeve (161) inner chamber, still install blocking cover (17) on sleeve (161) of dust screen (162) outer end.

4. A hazardous waste recycling line according to claim 3, wherein: the quantity of air duct (15) is a plurality of groups, a plurality of groups air duct (15) are horizontal and evenly install on first baffle (142), still install on air duct (15) with barrel (14) inner wall surface matched with supporting seat (151).

5. The hazardous waste recycling line of claim 3, wherein the flue gas treatment device further comprises a denitration device, the denitration device comprising: the denitration tank comprises a denitration tank body (18), wherein an exhaust port (181) is formed in the upper end of the denitration tank body (18), an air inlet (182) is formed in the lower end of the denitration tank body (18), a first spraying device (19) and a second spraying device (20) are sequentially arranged in the inner cavity of the denitration tank body (18) from the air inlet (182) to the exhaust port (181), and a turbulence device is arranged in the inner cavity of the denitration tank body (18) close to the second spraying device (20);

vortex device includes second motor (21) and installs axis body (211) on second motor (21) output, axis body (211) extend to denitration jar body (18) inner chamber, and be located blade (212) that are used for the vortex are installed to axis body (211) of denitration jar body (18) inner chamber, second spray set (20) are setting up shower head (201) taking off round pin jar body (18) inner chamber including being cyclic annular equipartition, the output of shower head (201) sets up towards the axial lead of axis body (211).

6. The hazardous waste recycling line of claim 5, wherein: the output end of the spray header (201) is arranged towards the axis of the shaft body (211) in a horizontal angle, the second spray device (20) further comprises a water diversion pipe (22), the spray header (201) is installed on the water diversion pipe (22), and the water diversion pipe (22) is connected with the output end of a circulating pump through a pipeline; the number of the water distribution pipes (22) is at least 5, 5 groups of the water distribution pipes (22) are vertically installed and fixed in the inner cavity of the denitration tank body (18) at equal intervals, and valves are respectively arranged between the 5 groups of the water distribution pipes (22) and the pipeline; the spray header (201) adopts an atomization spray header.

7. A hazardous waste recycling line according to claim 1, wherein the slag extractor (6) comprises: the slag salvaging device comprises a tool frame (23), wherein a slag salvaging box (26) for salvaging slag and a slag salvaging conveying line for conveying the slag salvaging box (26) are arranged on the tool frame (23), and the slag salvaging conveying line is sequentially provided with a slag salvaging station (231), a conveying uplink station (232), a blanking station (233) and a conveying downlink station (234);

the slag salvaging station (231) is arranged in a slag salvaging pool (24), and a feed inlet of the slag salvaging pool (24) is connected to a collecting pool (5) at the lower end of a slag discharge port (51) through a slag discharge pipeline (241);

the conveying line (81) comprises a transmission chain and a connecting rod (251) arranged on the transmission chain, the slag fishing carriage (26) is arranged on the connecting rod (251), a slag fishing carriage material port (261) and a liquid discharge hole (262) are arranged on the slag fishing carriage (26), and the slag fishing carriage material port (261) is obliquely arranged along the conveying direction of the slag fishing conveying line;

the slag salvaging device is characterized in that a second baffle (27) is arranged on the tool frame (23), the second baffle (27) is provided with a chamber which covers the transmission uplink station (232), the blanking station (233) and the transmission downlink station (234) in the chamber, the second baffle (27) is further provided with a blanking port (271) which is matched with the blanking station (233), and rotating shafts (28) which drive the slag salvaging box (26) to horizontally turn are respectively arranged on the tool frame (23) between the blanking station (233) and the transmission downlink station (234) and between the transmission downlink station (234) and the slag salvaging station (231).

8. The hazardous waste recycling line of claim 7, wherein: the conveying line (81) further comprises a connecting plate (30) fixed on the tool frame (23), chain wheels (31) meshed with the transmission chains (25) are respectively arranged on the connecting plate (30) and the rotating shaft (28), the output end of the speed reducing motor (29) is in transmission fit with the chain wheels (31) to drive the transmission chains (25) to rotate, and then the slag fishing carriage (26) is driven to circularly and repeatedly run on a slag fishing station (231), a transmission uplink station (232), a blanking station (233) and a transmission downlink station (234).

9. The hazardous waste recycling line of claim 7, wherein: arrange slag notch (51) and set up in the upper end of collecting pit (5), still be provided with gas blowing device (32) between row slag notch (51) and sediment pipeline (241), the output orientation of gas blowing device (32) drags for the waste residue feed inlet setting of slag bath (24).

10. The hazardous waste recycling line of claim 1, wherein: a mounting plate (33) is arranged on the mounting frame (4) positioned at the upper end of the smelting furnace (2), the water tank (2.11) is arranged on the mounting plate (33), and a feed hopper (34) communicated with a material port of the smelting furnace (2) is arranged on the mounting plate (33); the molding device comprises a mold cavity (71) for receiving the melt and a die plate (72) arranged on the mold cavity (71) for die-molding the melt.