CN208253603U - A kind of processing system of wiring board - Google Patents
A kind of processing system of wiring board Download PDFInfo
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- CN208253603U CN208253603U CN201820647298.9U CN201820647298U CN208253603U CN 208253603 U CN208253603 U CN 208253603U CN 201820647298 U CN201820647298 U CN 201820647298U CN 208253603 U CN208253603 U CN 208253603U
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Abstract
The utility model provides a kind of processing system of wiring board.The processing system includes: cracking unit, has cracking exhanst gas outlet and solid slag outlet；Heavy metal sewage sludge supply unit；Side-blown melting unit has to melting material inlet and side-blown entrance, cracks exhanst gas outlet and is connected with side-blown entrance, is connected to melting material inlet with heavy metal sewage sludge supply unit.The cracking flue-gas temperature generated due to wiring board cracking is higher and wherein containing there are many organic matter, therefore its calorific value with higher, and then cracking exhanst gas outlet is connected with side-blown entrance is combined the side-blown melting of wiring board cracking process and heavy metal sewage sludge, cracking flue gas as the part of fuel of the side-blown melting of heavy metal sewage sludge and then is made full use of into the part calorific value, environmental pollution caused by the outlet of organic matter is avoided simultaneously, and reduces the side-blown melting cost of heavy metal sewage sludge.The side-blown melting of heavy metal sewage sludge can make the dustiness of melting flue gas smaller by the full combustion under excess oxygen.
Description
Technical field
The utility model relates to the process fields of wiring board, in particular to a kind of processing system of wiring board.
Background technique
The 14 class product abandonment amounts for being included in administrative directory for 2017 continue growing, and dismantling is still with " four machines, one brain " product
It is main, it treating capacity still held stationary or increases by a small margin.It is increasingly fierce to handle competition among enterprises, so that processing enterprise faces Cash Flow
Pressure, and industrial profit continues to decline, small enterprise is difficult to keep sustainable development, and merging and reorganization will continue active in industry,
Waste electrical and electronic equipment recycles industrial concentration and will further improve.Waste electrical and electronic equipment handle enterprise via
Start based on disassembling, develop to deep processing direction, enterprise will continue to explore deep processing processing, to make full use of intermediate product
Added value promotes the competitiveness of enterprise.The treatment process of present China's old circuit board is mainly machine decomposition technology and wet
Method metallurgy method.
Machine decomposition technology can simply be divided into two big steps: broken and sorting.First, it is crushed, with shearing, punching
It hits, squeeze, rubbing and the methods of low temperature, circuit board is carried out to the machine decomposition of physics on crushing plant.Second, sorting, i.e.,
According to different materials physical property density, difference electromagnetically using the method for gravity separation, magnetic separation or electric separation will be broken
Piece is sorted.Method energy consumption is big, efficiency is lower, and poisonous and hazardous gas can be generated in separation process, causes dirt to environment
Dye.
Hydrometallurgical is to make circuit board and chemical reagent generation chemical reaction such as oxidation, reduction, neutralization, decomposition and network
Close reaction etc..Waste and old circuit board is pre-processed first, pretreatment is the necessary step before leaching metal from waste and old circuit board
Including physics pretreatment and chemical pretreatment suddenly,.The metal in circuit board is leached and settled again, finally obtains required gold
Belong to.Main leaching method Cyanide Leaching, thiocarbamide leaching, thiosulfate leaching and halides leaching etc..Hydrometallurgical technology
It corrosivity and is more toxic, reagent consumption is big, and the high requirements on the equipment easily causes secondary pollution.
Utility model content
The main purpose of the utility model is to provide a kind of processing systems of wiring board, to solve line in the prior art
The heavy-polluted problem of road plate treatment process.
To achieve the goals above, one aspect according to the present utility model provides a kind of processing system of wiring board,
Include: cracking unit, there is cracking exhanst gas outlet and solid slag outlet；Heavy metal sewage sludge supply unit；Side-blown melting unit, has
To melting material inlet and side-blown entrance, crack exhanst gas outlet and be connected with side-blown entrance, to melting material inlet with it is heavy metal-polluted
Mud supply unit is connected.
Further, above-mentioned cracking unit includes: pyrolysis furnace, and pyrolysis furnace includes cracking room and combustion chamber, and cracking flue gas goes out
Mouth and solid slag outlet and combustion chamber, combustion chamber include having combustion gas entrance；Gas and oil separating plant goes out with cracking flue gas
Mouth, which is connected, obtains cracked oil and cracking gas to the cracking flue gas progress Oil-gas Separation that cracking unit generates, and gas and oil separating plant has
Oil export and cracking gas outlet are cracked, cracking oil export is connected with side-blown entrance.
Further, above-mentioned pyrolysis furnace is rotary pyrolysis furnace.
Further, above-mentioned cracking gas outlet is connected with entry of combustion chamber.
Further, above-mentioned solid slag outlet is connected with to melting material inlet.
Further, above-mentioned pyrolysis furnace further include: sealed feeding device is connected to supply into cracking room with cracking room
Wiring board to be cracked；Sealed discharging device, is connected with cracking room, and solid slag outlet is arranged on sealed discharging device.
Further, above-mentioned sealed discharging device includes connected sealed emission of baiting chute and screw conveyor, solid slag
Outlet is arranged on screw conveyor.
Further, above-mentioned screw conveyor is water-cooled screw conveyor.
Further, above-mentioned sealed feeding device includes: feeder pipe, and feeder pipe is that "the" shape is arranged, in feeder pipe
It is provided with rotary discharge valve；Screw feeder pipe is connected to feeder pipe and cracking room.
Further, above-mentioned cracking unit further includes wiring board crushing device, and wiring board crushing device is connected with feeder pipe.
Further, above-mentioned heavy metal sewage sludge supply unit includes: drying device, has sludge containing heavy metal import and does
Dry sludge outlet；Prilling granulator has dry sludge import and mud granule outlet, and dry sludge and active carbon are mixed
Granulation obtains mud granule, and dry sludge import is connected with dry sludge outlet, and mud granule exports and to melting material inlet
It is connected.
Further, above-mentioned side-blown melting unit also has melting exhanst gas outlet, and processing system further includes waste heat boiler, remaining
Heat boiler is connected with melting exhanst gas outlet carries out waste heat recycling with the melting flue gas that opposite side blows and fuses refining unit.
Further, above-mentioned waste heat boiler is exported with low-temperature flue gas, and processing system further includes melting fume treatment unit,
With to melting flue gas carry out desulfurization, debrominate, it is out of stock and except dioxin handle.
Further, above-mentioned fume treatment unit includes the out of stock device being sequentially connected, debrominate device, desulfurizer and removes
Dioxin device, out of stock device are connected with low-temperature flue gas outlet.
Further, above-mentioned waste heat boiler also has steam (vapor) outlet, and steam (vapor) outlet is connected with power generator.
Using the technical solution of the utility model, since the cracking flue-gas temperature of wiring board cracking generation is higher and wherein contains
There are many organic matter, therefore its calorific value with higher, and then cracking exhanst gas outlet is connected with side-blown entrance splits wiring board
The side-blown melting of solution preocess and heavy metal sewage sludge is combined, and will be cracked flue gas as the part of the side-blown melting of heavy metal sewage sludge and is fired
Expect and then make full use of the part calorific value, while avoiding environmental pollution caused by the outlet of organic matter, and reduces a huge sum of money
Belong to the side-blown melting cost of sludge.The side-blown melting of heavy metal sewage sludge belongs to a kind of comparatively mature technique, in the technique
The dustiness of melting flue gas can be made smaller by the full combustion under excess oxygen in the process.It can be seen that the application
Processing system reduces the pollution level of wiring board processing in the prior art on the whole, while reducing the combustion of heavy metal sewage sludge
Expect consuming cost.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide a further understanding of the present invention, this is practical
Novel illustrative embodiments and their description are not constituteed improper limits to the present invention for explaining the utility model.
In the accompanying drawings:
Fig. 1 shows the structural frames of the processing system of the wiring board provided according to a kind of preferred embodiment of the utility model
Figure；
Fig. 2 shows the structures for cracking unit of the processing system provided according to a kind of preferred embodiment of the utility model
Schematic diagram；And
Fig. 3 shows the processing method process signal for the wiring board that a kind of preferred embodiment according to the present utility model provides
Figure.
Wherein, the above drawings include the following reference numerals:
10, unit is cracked；11, wiring board crushing device；12, sealed feeding device；13, pyrolysis furnace；14, Oil-gas Separation
Device；15, sealed discharging device；121, feeder pipe；122, screw feeder pipe；151, sealed emission of baiting chute；152, spiral
Conveyer；20, heavy metal sewage sludge supply unit；30, side-blown melting unit；40, waste heat boiler；50, melting fume treatment unit.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The utility model will be described in detail below with reference to the accompanying drawings and embodiments.
As the application background technique is analyzed, the technique of various processing circuit plates in the prior art can all generate toxic
Pernicious gas or liquid, therefore it is be easy to cause more serious environmental pollution, in order to solve this problem, this application provides one kind
The processing system of wiring board.In a kind of typical embodiment, as shown in Figure 1, the processing system includes cracking unit 10, again
Metal sludge supply unit 20 and side-blown melting unit 30, cracking unit 10 have cracking exhanst gas outlet and solid slag outlet；It is side-blown
Melting unit 30 has to melting material inlet and side-blown entrance, cracks exhanst gas outlet and is connected with side-blown entrance, to melting material
Import is connected with heavy metal sewage sludge supply unit 20.
The cracking flue-gas temperature generated due to wiring board cracking it is higher and wherein containing there are many organic matter, have compared with
High calorific value, and then cracking exhanst gas outlet is connected with side-blown entrance melts wiring board cracking process and the side-blown of heavy metal sewage sludge
Refining is combined, and cracking flue gas as the part of fuel of the side-blown melting of heavy metal sewage sludge and then is made full use of the part calorific value,
Environmental pollution caused by the outlet of organic matter is avoided simultaneously, and reduces the side-blown melting cost of heavy metal sewage sludge.With much money
The side-blown melting for belonging to sludge belongs to a kind of comparatively mature technique, can be by under excess oxygen in the technical process
Full combustion makes the dustiness of melting flue gas smaller.It can be seen that the processing system of the application reduce on the whole it is existing
The pollution level that wiring board is handled in technology, while reducing the fuel consumption cost of heavy metal sewage sludge.
In a kind of preferred embodiment, as shown in Fig. 2, above-mentioned cracking unit 10 includes that pyrolysis furnace 13 and Oil-gas Separation fill
14 are set, pyrolysis furnace 13 includes cracking room and combustion chamber, cracks exhanst gas outlet and solid slag outlet and combustion chamber, combustion chamber packet
It includes with combustion gas entrance, preferably pyrolysis furnace 13 is rotary pyrolysis furnace 13；Gas and oil separating plant 14 and cracking exhanst gas outlet phase
The cracking flue gas even generated to cracking unit 10 carries out Oil-gas Separation and obtains cracked oil and cracking gas, and gas and oil separating plant 14 has
Oil export and cracking gas outlet are cracked, cracking oil export is connected with side-blown entrance.Oil-gas Separation is carried out to cracking flue gas to be split
Vent one's spleen and cracked oil, will cracking oil and gas as the fuel in the side-blown fusion process of heavy metal sewage sludge.Having in cracked oil
Machine object content is higher, therefore its calorific value is higher, by itself and natural gas collectively as side-blown melting fuel when, the burning of fuel
It is more efficient.
Preferably, above-mentioned cracking gas outlet is connected with entry of combustion chamber.Cracking gas returns to cracking process and carries out as fuel
Burning provides heat for cracking, realizes and make full use of to cracking gas.
Since the solid slag of cracking generation is based on metal, and the amount of solid slag is relatively fewer, therefore in order to improve from solid slag
The efficiency of metal is recycled, solid slag outlet is connected with to melting material inlet, and preferably solid slag exports and to be arranged between melting material
There is cooling device to cool down to solid slag.By after cooling solid slag and heavy metal sewage sludge carry out side-blown melting jointly and reach side-blown
Metal therein can also be recycled in time less even if solid slag yield, and utilize solid slag by the requirement in the molten bath that melting is formed
The high efficiente callback of metal is realized using side-blown melting with the similitude of heavy metal sewage sludge.
In the application another kind preferred embodiment, as shown in Fig. 2, above-mentioned pyrolysis furnace 13 includes sealed feeding device
12 and sealed discharging device 15, sealed feeding device 12 be connected with cracking room to supply route to be cracked into cracking room
Plate；Sealed discharging device 15 is connected with cracking room, solid slag outlet be arranged on sealed discharging device 15, preferably it is sealed go out
Expect that device 15 includes connected sealed emission of baiting chute 151 and screw conveyor 152, solid slag outlet is arranged in screw conveyor
On 152, preferably screw conveyor 152 is water-cooled screw conveyor.Pass through above-mentioned sealed feeding device 12 and sealed discharging
Device 15 is connected and sealed with cracking room, realizes the sealing of cracking process.
For the obturation effect being better achieved in above-mentioned wiring board cracking, preferably as shown in Fig. 2, sealed feeding device
12 include feeder pipe 121 and screw feeder pipe 122, and feeder pipe 121 is "the" shape setting, is provided with rotation in feeder pipe 121
Discharge valve；Screw feeder pipe 122 is connected to feeder pipe 121 and cracking room.Blanking can be effectively blocked by "the" shape setting
The air of 121 inlet of pipe enters in pyrolysis furnace 13, and rotary discharge valve is arranged in feeder pipe 121 and guarantees feeder pipe 121
Blanking velocity；The screw feeder of screw feeder pipe 122 improves delivery rate.
Further, in order to improve the lysis efficiency of wiring board, preferably as shown in Fig. 2, above-mentioned cracking unit 10 further includes
Wiring board crushing device 11, wiring board crushing device 11 are connected with feeder pipe 121.
The side-blown melting of the heavy metal sewage sludge of the application can be implemented with reference to the prior art, it is preferable that will be heavy metal-polluted
Mud is dried it before being sent into side-blown melting unit 30 and granulation processing, i.e., preferred heavy metal sewage sludge supply unit 20 include
Heavy metal sewage sludge is dried to obtain dry sludge for drying device and prilling granulator, drying device, and prilling granulator will be dry dirty
Mud and active carbon carry out mixing granulation and obtain mud granule；Drying device has heavy metal sewage sludge import and dry sludge outlet,
Prilling granulator has dry sludge import and mud granule outlet, and dry sludge import is connected with dry sludge outlet, sludge
Grain outlet is connected with to melting material inlet.Dry sludge and active carbon are mixed in a manner of being granulated, active carbon conduct
Reducing agent, the effect that active carbon restores metal oxide in heavy metal sewage sludge when improving side-blown melting.Likewise it is preferred that active
Charcoal is waste active carbon, can not only play the role of reducing metal oxide, can also realize the money of hazardous waste waste active carbon
Source recycles, and more avoids pollution of the waste active carbon to environment.
Above-mentioned heavy metal sewage sludge carries out generating melting flue gas in side-blown fusion process, preferably as shown in Figure 1, above-mentioned side-blown molten
Refining unit 30 also has melting exhanst gas outlet, which further includes waste heat boiler 40, and waste heat boiler 40 goes out with melting flue gas
Mouth, which is connected, carries out waste heat recycling with the melting flue gas that opposite side blows and fuses refining unit 30.In side-blown fusion process, fuel typically exists
1300 DEG C or more carry out submerged combustion, therefore the temperature of obtained melting flue gas is also the very high flue gas of temperature, utilizes waste heat
Boiler 40, which carries out heat to the part melting flue gas, may be implemented the effective use of thermal energy.Above-mentioned waste heat boiler 40 also has steam
Outlet, such as preferably above-mentioned steam (vapor) outlet are connected with power generator, to be generated electricity using the thermal energy.
For the environmental requirement that further satisfaction is more stringent, preferably above-mentioned waste heat boiler 40 is exported with low-temperature flue gas,
As shown in Figure 1, above-mentioned processing system further includes melting fume treatment unit 50, to carry out desulfurization, debrominate, out of stock to melting flue gas
With except dioxin handle, further, above-mentioned desulfurization, debrominate, it is out of stock and except dioxin processing can separate handle, i.e., preferred cigarette
Gas disposal unit includes the out of stock device being sequentially connected, debrominate device, desulfurizer and except dioxin device, out of stock device with it is low
Warm exhanst gas outlet is connected.
In addition, in order to make those skilled in the art more easily implement above-mentioned processing method, as shown in figure 3, the processing side
Method includes: to crack wiring board, obtains cracking flue gas and solid slag；And it is cracking flue gas is side-blown molten as heavy metal sewage sludge
Part of fuel during refining carries out side-blown melting to heavy metal sewage sludge.
The cracking flue-gas temperature generated due to wiring board cracking it is higher and wherein containing there are many organic matter, have compared with
High calorific value, and then when the side-blown melting of wiring board cracking process and heavy metal sewage sludge is combined, will cracking flue gas as weighing
The part of fuel of the side-blown melting of metal sludge makes full use of the part calorific value in turn, while avoiding caused by the outlet of organic matter
Environmental pollution, and reduce the side-blown melting cost of heavy metal sewage sludge.The side-blown smelting technology of heavy metal sewage sludge belongs to one kind
Comparatively mature technique, can make the dirt of melting flue gas in the technical process by the full combustion under excess oxygen
Dye degree is smaller.It can be seen that the processing method of the application reduces the pollution journey of wiring board processing in the prior art on the whole
Degree, while reducing the fuel consumption cost of heavy metal sewage sludge.
In order to improve the utilization efficiency of cracking flue gas, flue gas preferably will cracked as the side-blown fusion process of heavy metal sewage sludge
In part of fuel before, to cracking flue gas carry out Oil-gas Separation obtain cracking gas and cracked oil, will cracking oil and gas with
As the fuel in the side-blown fusion process of heavy metal sewage sludge after the volume ratio mixing of 1:5~5:4.Content of organics in cracked oil
It is higher, therefore its calorific value is higher, by itself and natural gas collectively as side-blown melting fuel when, the efficiency of combustion of fuel is more
Height effectively realizes the separation of slag phase and metal phase so that side-blown melting bath temperature is rapidly achieved 1300 DEG C or more.
Since wiring board cracking process is typically all to carry out under the hot environment of anaerobic, cracking flue gas separation
Cracking gas temperature is higher, oxygen content is extremely low, it is made full use of in order to realize, preferably above-mentioned processing method further include by
Cracking process of the cracking gas as part of fuel return line plate.Cracking gas returns to cracking process and burns as fuel, is
Cracking provides heat.
Since the solid slag of cracking generation is based on metal, and the amount of solid slag is relatively fewer, therefore in order to improve from solid slag
The efficiency of metal is recycled, preferably above-mentioned processing method further includes that solid slag and heavy metal sewage sludge are carried out side-blown melting jointly.It will consolidate
Slag and heavy metal sewage sludge carry out the requirement that side-blown melting reaches the molten bath that side-blown melting is formed jointly, less can also even if solid slag yield
In time to recycle metal therein, and gold is realized using side-blown melting using solid slag and the similitude of heavy metal sewage sludge
The high efficiente callback of category.
In a preferred embodiment of the present application, in order to improve the lysis efficiency of wiring board, preferably to wiring board into
Before row cracking, above-mentioned processing method further includes that wiring board is carried out to broken process, to improve route in cracking process
The heating surface area of plate, and then improve its lysis efficiency.In addition to avoid the partial size of wiring board is too small from causing to flow out with flue gas, it is excellent
Choosing and stating the partial size of broken wiring board is 10~50mm.
The concrete operations of the application cracked to wiring board can refer to the prior art, preferably in closed environment
Or wiring board is cracked in nitrogen atmosphere.Further preferably in cracking, the residence time of wiring board is 1~2h, cracking temperature
Degree is 450~550 DEG C, and the organic matter in wiring board on the one hand can be made to crack volatilization as far as possible, on the other hand made in wiring board
Metal as far as possible be dissolved come out.
It is preferably as shown in Figure 1, right using pyrolysis furnace 13 for the obturation effect being better achieved in above-mentioned wiring board cracking
Wiring board is cracked, and more preferable above-mentioned pyrolysis furnace 13 is rotary pyrolysis furnace 13.Using sealed feeding device 12 by route
Plate supplies pyrolysis furnace 13, realizes the closed linking of feed and cracking.Preferably, above-mentioned sealed feeding device 12 includes blanking
Pipe 121 and screw feeder pipe 122, feeder pipe 121 are "the" shape setting, are provided with rotary discharge valve in feeder pipe 121；Spiral
Feed pipe 122 is connected to feeder pipe 121 and pyrolysis furnace 13.121 entrance of feeder pipe can be effectively blocked by "the" shape setting
The air at place enters in pyrolysis furnace 13, and the blanking velocity of rotary discharge valve guarantee feeder pipe 121 is arranged in feeder pipe 121；
The screw feeder of screw feeder pipe 122 improves delivery rate.
The side-blown melting of the heavy metal sewage sludge of the application can be implemented with reference to the prior art, it is preferable that will be heavy metal-polluted
Before mud carries out side-blown melting, above-mentioned processing method include: by heavy metal sewage sludge be dried to obtain water content 30~
The drying sludge of 45wt% carries out mixing granulation to dry sludge and active carbon, obtains mud granule, and wherein active carbon is drying
The 5~15% of sludge weight；Metal sludge carries out side-blown melting in the form of mud granule.By dry sludge and active carbon to make
The mode of grain is mixed, the effect that waste active carbon restores metal oxide in heavy metal sewage sludge when improving side-blown melting.
Likewise it is preferred that active carbon is waste active carbon, it can not only play the role of reducing metal oxide, can also realize hazardous waste
The resource reutilization of waste active carbon more avoids pollution of the waste active carbon to environment.
Above-mentioned heavy metal sewage sludge carries out generating melting flue gas in side-blown fusion process, and preferably above-mentioned processing method further includes pair
The process of melting flue gas progress heat recovery.In side-blown fusion process, fuel is typically all to carry out submergence combustion at 1300 DEG C or more
It burns, therefore the temperature of obtained melting flue gas is also the very high flue gas of temperature, and carrying out heat to the part melting flue gas can be with
It realizes the effective use of thermal energy, for example is used to heat steam using the waste heat of recycling and then is used to generate electricity.
For the environmental requirement that further satisfaction is more stringent, preferably above-mentioned processing method further includes to after heat recovery
Flue gas carries out desulfurization, debrominate, the out of stock and optional process handled except dioxin.Wherein, in side-blown melting, due to cracking flue gas
(or cracked oil) and natural gas spray into molten bath using spray gun in side-blown smelting furnace, carry out submerged combustion at 1300 DEG C or more, mention
The generation of dioxin can be reduced while heating load, therefore, can reduce the investment except dioxin facility.
Below with reference to attached drawing, the processing method for the wiring board that a kind of preferred embodiment of the application provides is said
It is bright, Fig. 3 is specifically referred to, is cracked after wiring board is crushed, cracking flue gas and solid slag are generated after cracking.Will cracking flue gas into
Row Oil-gas Separation obtains cracked oil and cracking gas, and the cracking process of cracking gas return line plate is used as fuel, solid slag and again
Metal sludge particle carries out side-blown melting together, and cracked oil approaching side blows fusion process and natural gas together as side-blown melting
Fuel obtains metal and granulated slag after side-blown melting, the melting flue gas progress waste heat boiler that side-blown melting generates is remaining as heat source
The steam that heat boiler generates is used for power plants generating electricity, empties after the flue gas of waste heat boiler carries out further purified treatment.
Below with reference to embodiment and comparative example, the beneficial effect of above-mentioned technical proposal is further illustrated.
Embodiment 1
Aqueous about 75% heavy metal sewage sludge of 250000 t/a, butt cupric about 15wt%, arrange in pairs or groups 1.5 ten thousand t/a waste active carbons, 2
Ten thousand t/a waste printed circuit boards are handled using following process:
Waste printed circuit board is broken into the wiring board particle that partial size is 10~50mm, heavy metal sewage sludge drying to water content is existed
Between 30~45wt%, dry sludge is obtained, mixing granulation is carried out to dry sludge and above-mentioned waste active carbon and obtains mud granule.
Above-mentioned wiring board particle is cracked using cracking unit shown in Fig. 2, wherein the residence time of wiring board particle is 1.5h,
Cracking temperature is 550 DEG C, obtains cracking flue gas and solid slag；Above-mentioned cracking flue gas progress Oil-gas Separation is obtained into cracking gas and cracking
Then it is side-blown to mud granule progress will to crack fuel of the oil and gas using the volume ratio of 5:4 as above-mentioned mud granule for oil
Melting controls side-blown melting bath temperature at 1300 DEG C or more.Obtain about 1.2 ten thousand t/a black copper, the rate of recovery of copper reach 90% with
On.Copper in Slag amount can be controlled in 0.9% or less.
Embodiment 2
Aqueous about 75% heavy metal sewage sludge of 250000 t/a, butt cupric about 15wt%, arrange in pairs or groups 1.5 ten thousand t/a waste active carbons, 2
Ten thousand t/a waste printed circuit boards are handled using following process:
Waste printed circuit board is broken into the wiring board particle that partial size is 10~50mm, heavy metal sewage sludge drying to water content is existed
Between 30~45wt%, dry sludge is obtained, mixing granulation is carried out to dry sludge and above-mentioned waste active carbon and obtains mud granule.
Above-mentioned wiring board particle is cracked using cracking unit shown in Fig. 2, wherein the residence time of wiring board particle is 1h, is split
Solving temperature is 550 DEG C, obtains cracking flue gas and solid slag；Above-mentioned cracking flue gas progress Oil-gas Separation is obtained into cracking gas and cracking
Then it is side-blown to mud granule progress will to crack fuel of the oil and gas using the volume ratio of 5:3 as above-mentioned mud granule for oil
Melting controls side-blown melting bath temperature at 1300 DEG C or more.About 1.2 ten thousand t/a black copper are obtained, the rate of recovery of copper reaches 90wt%
More than.Copper in Slag amount can be controlled in 0.9wt% or less.
Embodiment 3
Aqueous about 75% heavy metal sewage sludge of 250000 t/a, butt cupric about 15wt%, arrange in pairs or groups 1.5 ten thousand t/a waste active carbons, 2
Ten thousand t/a waste printed circuit boards are handled using following process:
Waste printed circuit board is broken into the wiring board particle that partial size is 10~50mm, heavy metal sewage sludge drying to water content is existed
Between 30~45wt%, dry sludge is obtained, mixing granulation is carried out to dry sludge and above-mentioned waste active carbon and obtains mud granule.
Above-mentioned wiring board particle is cracked using cracking unit shown in Fig. 2, wherein the residence time of wiring board particle is 1h, is split
Solving temperature is 450 DEG C, obtains cracking flue gas and solid slag；Above-mentioned cracking flue gas progress Oil-gas Separation is obtained into cracking gas and cracking
Then it is side-blown to mud granule progress will to crack fuel of the oil and gas using the volume ratio of 1:5 as above-mentioned mud granule for oil
Melting controls side-blown melting bath temperature at 1300 DEG C or more.About 1.2 ten thousand t/a black copper are obtained, the rate of recovery of copper reaches 90wt%
More than.Copper in Slag amount can be controlled in 0.9wt% or less.
Embodiment 4
Aqueous about 75% heavy metal sewage sludge of 250000 t/a, butt cupric about 15wt%, arrange in pairs or groups 1.5 ten thousand t/a waste active carbons, 2
Ten thousand t/a waste printed circuit boards are handled using following process:
Waste printed circuit board is broken into the wiring board particle that partial size is 10~50mm, heavy metal sewage sludge drying to water content is existed
Between 30~45wt%, dry sludge is obtained, mixing granulation is carried out to dry sludge and above-mentioned waste active carbon and obtains mud granule.
Above-mentioned wiring board particle is cracked using cracking unit shown in Fig. 2, wherein the residence time of wiring board particle is 1.5h,
Cracking temperature is 450 DEG C, obtains cracking flue gas and solid slag；Above-mentioned cracking flue gas progress Oil-gas Separation is obtained into cracking gas and cracking
Then it is side-blown to mud granule progress will to crack fuel of the oil and gas using the volume ratio of 2:5 as above-mentioned mud granule for oil
Melting controls side-blown melting bath temperature at 1300 DEG C or more.About 1.2 ten thousand t/a black copper are obtained, the rate of recovery of copper reaches 90wt%
More than.Copper in Slag amount can be controlled in 0.9wt% or less.
It can be seen from the above description that the above embodiments of the utility model achieve the following technical effects:
The cracking flue-gas temperature generated due to wiring board cracking it is higher and wherein containing there are many organic matter, have compared with
High calorific value, and then cracking exhanst gas outlet is connected with side-blown entrance melts wiring board cracking process and the side-blown of heavy metal sewage sludge
Refining is combined, and cracking flue gas as the part of fuel of the side-blown melting of heavy metal sewage sludge and then is made full use of the part calorific value,
Environmental pollution caused by the outlet of organic matter is avoided simultaneously, and reduces the side-blown melting cost of heavy metal sewage sludge.With much money
The side-blown melting for belonging to sludge belongs to a kind of comparatively mature technique, can be by under excess oxygen in the technical process
Full combustion makes the dustiness of melting flue gas smaller.It can be seen that the processing system of the application reduce on the whole it is existing
The pollution level that wiring board is handled in technology, while reducing the fuel consumption cost of heavy metal sewage sludge.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (15)
1. a kind of processing system of wiring board characterized by comprising
It cracks unit (10), there is cracking exhanst gas outlet and solid slag outlet；
Heavy metal sewage sludge supply unit (20)；
Side-blown melting unit (30) has to melting material inlet and side-blown entrance, the cracking exhanst gas outlet with it is described side-blown
Entrance is connected, described to be connected to melting material inlet with the heavy metal sewage sludge supply unit (20).
2. processing system according to claim 1, which is characterized in that the cracking unit (10) includes:
Pyrolysis furnace (13), the pyrolysis furnace (13) include cracking room and combustion chamber, and the cracking exhanst gas outlet and the solid slag go out
Mouth and the combustion chamber, the combustion chamber include having combustion gas entrance；
Gas and oil separating plant (14) is connected with the cracking exhanst gas outlet and carries out oil to the cracking flue gas that cracking unit (10) generates
The isolated cracked oil of gas and cracking gas, the gas and oil separating plant (14) has cracking oil export and cracking gas outlet, described
Cracking oil export is connected with the side-blown entrance.
3. processing system according to claim 2, which is characterized in that the pyrolysis furnace (13) is rotary pyrolysis furnace
(13)。
4. processing system according to claim 2, which is characterized in that the cracking gas outlet and the entry of combustion chamber phase
Even.
5. processing system according to claim 1, which is characterized in that solid slag outlet with it is described to melting material inlet
It is connected.
6. processing system according to claim 2, which is characterized in that the pyrolysis furnace (13) further include:
Sealed feeding device (12), is connected to supply wiring board to be cracked into the cracking room with the cracking room；
Sealed discharging device (15), is connected with the cracking room, and the solid slag outlet is arranged in the sealed discharging device
(15) on.
7. processing system according to claim 6, which is characterized in that the sealed discharging device (15) includes connected
Sealed emission of baiting chute (151) and screw conveyor (152), the solid slag outlet are arranged on the screw conveyor (152).
8. processing system according to claim 7, which is characterized in that the screw conveyor (152) is that water-cooling spiral is defeated
Send machine.
9. processing system according to claim 6, which is characterized in that the sealed feeding device (12) includes:
Feeder pipe (121), the feeder pipe (121) are "the" shape setting, are provided with rotation discharging in the feeder pipe (121)
Valve；
Screw feeder pipe (122) is connected to the feeder pipe (121) and the cracking room.
10. processing system according to claim 9, which is characterized in that the cracking unit (10) further includes that wiring board is broken
Crushing device (11), the wiring board crushing device (11) are connected with the feeder pipe (121).
11. processing system according to claim 1, which is characterized in that the heavy metal sewage sludge supply unit (20) includes:
Drying device has sludge containing heavy metal import and dry sludge outlet；
Prilling granulator has dry sludge import and mud granule outlet, and the dry sludge and active carbon are carried out mixing and made
Grain obtains mud granule, and the dry sludge import is connected with the dry sludge outlet, the mud granule export with it is described
It is connected to melting material inlet.
12. processing system according to claim 1, which is characterized in that the side-blown melting unit (30) also has melting
Exhanst gas outlet, the processing system further include waste heat boiler (40), the waste heat boiler (40) and the melting exhanst gas outlet phase
Waste heat recycling is even carried out with the melting flue gas to the side-blown melting unit (30).
13. processing system according to claim 12, which is characterized in that the waste heat boiler (40) goes out with low-temperature flue gas
Mouthful, the processing system further includes melting fume treatment unit (50), to carry out desulfurization, debrominate, out of stock to the melting flue gas
It is handled with dioxin is removed.
14. processing system according to claim 13, which is characterized in that the fume treatment unit includes being sequentially connected
Out of stock device, debrominate device, desulfurizer and dioxin device is removed, the out of stock device and the low-temperature flue gas, which export, to be connected.
15. processing system according to claim 12, which is characterized in that the waste heat boiler (40) also goes out with steam
Mouthful, the steam (vapor) outlet is connected with power generator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820647298.9U CN208253603U (en) | 2018-05-02 | 2018-05-02 | A kind of processing system of wiring board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820647298.9U CN208253603U (en) | 2018-05-02 | 2018-05-02 | A kind of processing system of wiring board |
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| Publication Number | Publication Date |
|---|---|
| CN208253603U true CN208253603U (en) | 2018-12-18 |
Family
ID=64635806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820647298.9U Active CN208253603U (en) | 2018-05-02 | 2018-05-02 | A kind of processing system of wiring board |
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| Country | Link |
|---|---|
| CN (1) | CN208253603U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108413412A (en) * | 2018-05-02 | 2018-08-17 | 中国恩菲工程技术有限公司 | A kind of processing system of wiring board |
| WO2019210846A1 (en) * | 2018-05-02 | 2019-11-07 | 中国恩菲工程技术有限公司 | Circuit board processing method and processing system |
| CN112619561A (en) * | 2020-11-27 | 2021-04-09 | 深圳市捷晶能源科技有限公司 | Heavy metal-containing material treatment system and treatment method thereof |
| CN112978765A (en) * | 2021-05-20 | 2021-06-18 | 中国恩菲工程技术有限公司 | Waste circuit board pyrolysis debromination purification device and method |
-
2018
- 2018-05-02 CN CN201820647298.9U patent/CN208253603U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108413412A (en) * | 2018-05-02 | 2018-08-17 | 中国恩菲工程技术有限公司 | A kind of processing system of wiring board |
| WO2019210846A1 (en) * | 2018-05-02 | 2019-11-07 | 中国恩菲工程技术有限公司 | Circuit board processing method and processing system |
| CN108413412B (en) * | 2018-05-02 | 2024-03-22 | 中国恩菲工程技术有限公司 | Circuit board processing system |
| CN112619561A (en) * | 2020-11-27 | 2021-04-09 | 深圳市捷晶能源科技有限公司 | Heavy metal-containing material treatment system and treatment method thereof |
| CN112978765A (en) * | 2021-05-20 | 2021-06-18 | 中国恩菲工程技术有限公司 | Waste circuit board pyrolysis debromination purification device and method |
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