CN108642286A - A kind of processing method of wiring board - Google Patents
A kind of processing method of wiring board Download PDFInfo
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- CN108642286A CN108642286A CN201810411602.4A CN201810411602A CN108642286A CN 108642286 A CN108642286 A CN 108642286A CN 201810411602 A CN201810411602 A CN 201810411602A CN 108642286 A CN108642286 A CN 108642286A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/001—Dry processes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Processing Of Solid Wastes (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Treatment Of Sludge (AREA)
- Gasification And Melting Of Waste (AREA)
Abstract
The present invention provides a kind of processing methods of wiring board.The processing method includes：Wiring board is cracked, cracking flue gas and solid slag are obtained；And side-blown melting is carried out to heavy metal sewage sludge using cracking flue gas as the part of fuel in the side-blown fusion process of heavy metal sewage sludge.Since the cracking flue-gas temperature of wiring board cracking generation is higher and the organic matter wherein containing there are many, therefore it is with higher calorific value, when the side-blown melting of wiring board cracking process and heavy metal sewage sludge is combined in turn, 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 outer row of organic matter is avoided simultaneously, and reduces the side-blown melting cost of heavy metal sewage sludge.Side-blown smelting technology process can be by the abundant burning under excess oxygen so that the dustiness of melting flue gas is smaller.
Description
Technical field
The present invention relates to the process fields of wiring board, in particular to a kind of processing method of wiring board.
Background technology
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, in industry merging and reorganization will continue active,
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, 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 will be broken using the method for gravity separation, magnetic separation or electric separation
Piece is sorted.Method energy consumption is big, less efficient, and will produce poisonous and hazardous gas in separation process, and dirt is caused 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, to equipment requirement height, easily causes secondary pollution.
Invention content
The main purpose of the present invention is to provide a kind of processing methods of wiring board, to solve wiring board in the prior art
The heavy-polluted problem for the treatment of process.
To achieve the goals above, according to an aspect of the invention, there is provided a kind of processing method of wiring board, at this
Reason method includes：Wiring board is cracked, cracking flue gas and solid slag are obtained；And flue gas will be cracked as heavy metal sewage sludge side
It blows and fuses the part of fuel during refining and side-blown melting is carried out to heavy metal sewage sludge.
It is further, above-mentioned before it will crack flue gas as the part of fuel in the side-blown fusion process of heavy metal sewage sludge,
Oil-gas Separation is carried out to cracking flue gas and obtains cracking gas and cracked oil, by cracking oil and gas with 1：5~5:4 volume ratio is mixed
As the fuel in the side-blown fusion process of heavy metal sewage sludge after conjunction.
Further, above-mentioned processing method further includes using cracking gas as the cracking process of part of fuel return line plate.
Further, above-mentioned processing method further includes carrying out side-blown melting jointly with heavy metal sewage sludge after solid slag cools down.
Further, above-mentioned before being cracked to wiring board, processing method further include wiring board is carried out it is broken
The grain size of process, preferably broken wiring board is 10~50mm.
Further, above-mentioned to be cracked in closed environment or by wiring board in nitrogen atmosphere；It is preferred that in cracking, circuit
The residence time of plate is 1~2h, and cracking temperature is 450~550 DEG C.
Further, above-mentioned that wiring board is cracked using pyrolysis furnace, wiring board is supplied using sealed feeding device
To pyrolysis furnace, sealed feeding device includes：Tremie pipe, tremie pipe are arranged for "the" shape, and tremie pipe is provided with rotation discharging
Valve；Screw feeder pipe is connected to tremie pipe and pyrolysis furnace, and preferably pyrolysis furnace is swinging pyrolysis furnace.
Further, above-mentioned before heavy metal sewage sludge is carried out side-blown melting, processing method includes：By heavy metal sewage sludge
Be dried to obtain water content 30~45wt% drying sludge；Mixing granulation is carried out to dry sludge and activated carbon, is obtained
Mud granule, wherein activated carbon are the 5~15% of dry sludge weight；Heavy metal sewage sludge is carried out side-blown in the form of mud granule
Melting, preferably activated carbon are waste active carbon.
Further, above-mentioned heavy metal sewage sludge carries out generating melting flue gas in side-blown fusion process, and processing method further includes
The process of heat recovery is carried out to melting flue gas.
Further, above-mentioned processing method further includes carrying out desulfurization, debrominate, out of stock and optional to the flue gas after heat recovery
Chu bioxin processing process.
It applies the technical scheme of the present invention, since the cracking flue-gas temperature of wiring board cracking generation is higher and wherein contains perhaps
More organic matters, therefore it is with higher calorific value, and then the side-blown melting of wiring board cracking process and heavy metal sewage sludge carries out group
When conjunction, 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, is kept away simultaneously
Environmental pollution caused by having exempted from the outer row of organic matter, and reduce the side-blown melting cost of heavy metal sewage sludge.Heavy metal sewage sludge
Side-blown smelting technology belong to a kind of comparatively ripe technique, filling under excess oxygen can be passed through in the technical process
Divided combustion makes the dustiness of melting flue gas smaller.It can be seen that the processing method of the application reduces existing skill on the whole
The pollution level that wiring board is handled in art, while reducing the fuel consumption cost of heavy metal sewage sludge.
Description of the drawings
The accompanying drawings which form a part of this application are used to provide further understanding of the present invention, and of the invention shows
Meaning property embodiment and its explanation are not constituted improper limitations of the present invention for explaining the present invention.In the accompanying drawings：
Fig. 1 shows the process flow schematic diagram for the wiring board that a kind of preferred embodiment according to the present invention provides；
Fig. 2 shows according to a kind of structure diagram of the processing system of the wiring board of preferred embodiment offer of the present invention；
And
Fig. 3 shows the structural representation of the cracking unit of the processing system provided according to a kind of preferred embodiment of the present invention
Figure.
Wherein, above-mentioned attached drawing includes the following drawings label：
10, unit is cracked；11, wiring board breaker；12, sealed feeding device；13, pyrolysis furnace；14, Oil-gas Separation
Device；15, sealed drawing mechanism；121, tremie 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 implementation mode
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 present invention will be described in detail below with reference to the accompanying drawings and embodiments.
As the application background technology 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 method of wiring board.As shown in Figure 1, the processing method includes：Wiring board is cracked, cracking flue gas is obtained and is consolidated
Slag；And heavy metal sewage sludge is carried out using cracking flue gas as the part of fuel in the side-blown fusion process of heavy metal sewage sludge side-blown molten
Refining.
The cracking flue-gas temperature generated due to wiring board cracking is higher and wherein contains 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 and then the part calorific value is made full use of, while caused by avoiding the outer row 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 a kind of
Comparatively ripe technique, can be by the abundant burning under excess oxygen so that the dirt of melting flue gas in the technical process
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 ratio 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
1：5~5:As the fuel in the side-blown fusion process of heavy metal sewage sludge after 4 volume ratio mixing.Content of organics in cracked oil
Higher, therefore its calorific value higher, by itself and natural gas collectively as side-blown melting fuel when, the efficiency of combustion of fuel is more
It is high so that side-blown melting bath temperature is rapidly achieved 1300 DEG C or more, effectively realizes the separation of slag phase and metal phase.
Since wiring board cracking process is typically all to be carried 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 carrying out side-blown melt after solid slag cools down jointly with heavy metal sewage sludge
Refining.By after cooling solid 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, i.e.,
Make solid slag yield that can also in time recycle metal therein less, and is used using solid slag and the similitude of heavy metal sewage sludge
Side-blown melting realizes the high efficiente callback of metal.
In a kind of preferred embodiment of the 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 circuit in cracking process
The heating surface area of plate, and then improve its lysis efficiency.In addition to avoid the grain size of wiring board is too small from causing to flow out with flue gas, it is excellent
It is 10~50mm to choose and state the grain size of broken wiring board.
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 out.
It is preferably as shown in figure 3, right using pyrolysis furnace 13 in order to which the obturation effect in above-mentioned wiring board cracking is better achieved
Wiring board is cracked, and more preferable above-mentioned pyrolysis furnace 13 is swinging pyrolysis furnace 13.Using sealed feeding device 12 by circuit
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, tremie pipe 121 are arranged for "the" shape, and rotary discharge valve is provided in tremie pipe 121；Spiral
Feed pipe 122 is connected to tremie pipe 121 and pyrolysis furnace 13.121 entrance of tremie 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 tremie pipe 121 is arranged in tremie 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 refer to the prior art and implement, it is preferable that will be heavy metal-polluted
Before mud carries out side-blown melting, above-mentioned processing method includes：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 activated carbon, obtains mud granule, and wherein activated 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 activated carbon to make
The mode of grain is mixed, and activated carbon aoxidizes metal in heavy metal sewage sludge when activated carbon improves side-blown melting as reducing agent
The effect of object reduction.Likewise it is preferred that activated carbon is waste active carbon, it can not only play the role of reducing metal oxide, may be used also
To realize the resource reutilization of hazardous waste waste active carbon, pollution of the waste active carbon to environment is more avoided.
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
Melting flue gas carries out the process of 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 efficiently using for thermal energy, for example is used to heat steam and then for generating electricity using the waste heat of recycling.
In order to further meet more stringent environmental requirement, preferably above-mentioned processing method further includes to after heat recovery
Flue gas carries out the process of desulfurization, debrominate, the processing of out of stock and optional Chu bioxin.Wherein, in side-blown melting, due to cracking flue gas
(or cracked oil) and natural gas spray into molten bath in side-blown smelting furnace using spray gun, carry out submerged combustion at 1300 DEG C or more, carry
The generation of bioxin can be reduced while heating load, therefore, can reduce the investment of Chu bioxin facilities.
Below with reference to attached drawing, a kind of processing method of the wiring board of preferred embodiment of the application offer is said
It is bright, Fig. 1 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, is emptied after the flue gas of waste heat boiler carries out further purified treatment.
In addition, in order to make those skilled in the art more easily implement above-mentioned processing method, present invention also provides one kind
The processing system of wiring board.In a preferred embodiment, as shown in Fig. 2, 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, which has, waits for melting material inlet and side-blown entrance, and cracking exhanst gas outlet is connected with side-blown entrance, waits for melting material
Import is connected with heavy metal sewage sludge supply unit 20.
The cracking flue-gas temperature generated due to wiring board cracking is higher and wherein contains there are many organic matter, have compared with
High calorific value, and then cracking exhanst gas outlet is connected with side-blown entrance makes wiring board cracking process and the side-blown of heavy metal sewage sludge melt
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 outer row 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 ripe technique, can be by under excess oxygen in the technical process
Fully burning is so that the dustiness of melting flue gas is 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, filled as shown in figure 3, above-mentioned cracking unit 10 includes pyrolysis furnace 13 and Oil-gas Separation
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 swinging 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 with 1：5~5:It is used as the side-blown melting of heavy metal sewage sludge after 4 volume ratio mixing
Fuel in journey.Content of organics higher in cracked oil, therefore its calorific value higher, by itself and natural gas collectively as side-blown
When the fuel of melting, the efficiency of combustion higher of fuel.
Preferably, above-mentioned cracking gas outlet is connected with entry of combustion chamber.Cracking gas returns to cracking process and is carried out as fuel
Burning provides heat for cracking, realizes and made 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 melting material inlet is waited for, preferably solid slag exports and waits for being arranged between melting material
There is heat sink 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
Melting formed molten bath requirement, even if solid slag yield less metal therein is recycled in time, and utilize solid slag
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 figure 3, above-mentioned pyrolysis furnace 13 includes sealed feeding device
12 and sealed drawing mechanism 15, sealed feeding device 12 be connected with cracking room to supply circuit to be cracked into cracking room
Plate；Sealed drawing mechanism 15 is connected with cracking room, solid slag outlet be arranged on sealed drawing mechanism 15, preferably it is sealed go out
Expect that sealed emission of baiting chute 151 and screw conveyor 152 that device 15 includes connected, solid slag outlet are 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.
In order to which the obturation effect in above-mentioned wiring board cracking is better achieved, preferably as shown in figure 3, sealed feeding device
12 include tremie pipe 121 and screw feeder pipe 122, and tremie pipe 121 is arranged for "the" shape, and rotation is provided in tremie pipe 121
Discharge valve；Screw feeder pipe 122 is connected to tremie 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 tremie pipe 121 and ensures tremie 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 figure 3, above-mentioned cracking unit 10 further includes
Wiring board breaker 11, wiring board breaker 11 are connected with tremie pipe 121.
The side-blown melting of the heavy metal sewage sludge of the application can refer to the prior art and implement, it is preferable that will be heavy metal-polluted
It is dried before being sent into side-blown melting unit 30 for mud and granulation processing, i.e., preferred heavy metal sewage sludge supply unit 20 includes
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 activated carbon carry out mixing granulation and obtain mud granule；Drying device has heavy metal sewage sludge import and dry sludge outlet,
Dry sludge import is connected with prilling granulator, and the mud granule outlet of prilling granulator is connected with melting material inlet is waited for.It will dry
Sludge and waste active carbon are mixed in a manner of being granulated, and waste active carbon is to metal in heavy metal sewage sludge when improving side-blown melting
The effect of oxide reduction.Likewise it is preferred that waste active carbon is reducing agent, it can not only play the role of reducing metal oxide,
It can also realize the resource reutilization of hazardous waste waste active carbon, more avoid pollution of the waste active carbon to environment.An above-mentioned huge sum of money
Belong to sludge to carry out generating melting flue gas in side-blown fusion process, preferably as shown in Fig. 2, above-mentioned side-blown melting unit 30 is also with molten
Exhanst gas outlet is refined, which further includes waste heat boiler 40, and waste heat boiler 40 is connected with melting exhanst gas outlet to be blowed and fused with offside
The melting flue gas for refining unit 30 carries out waste heat recovery.In side-blown fusion process, fuel is typically all to be soaked at 1300 DEG C or more
It does not burn, therefore the temperature of obtained melting flue gas is also the very high flue gas of temperature, it is molten to the part using waste heat boiler 40
Refining flue gas carries out heat and efficiently using for thermal energy may be implemented.Above-mentioned waste heat boiler 40 also have steam (vapor) outlet, such as preferably on
It states steam (vapor) outlet with power generator to be connected, to generate electricity using the thermal energy.
In order to further meet more stringent environmental requirement, preferably above-mentioned waste heat boiler 40 is exported with low-temperature flue gas,
As shown in Fig. 2, above-mentioned processing system further includes melting fume treatment unit 50, to carry out desulfurization, debrominate, out of stock to melting flue gas
With the processing of Chu bioxin, further, above-mentioned desulfurization, debrominate, the processing of out of stock and Chu bioxin can be separated and be handled, i.e., preferred cigarette
Gas disposal unit includes the out of stock device being sequentially connected, debrominate device, desulfurizer and Chu bioxin devices, out of stock device with it is low
Warm exhanst gas outlet is connected.
Below with reference to embodiment and comparative example, the advantageous effect of above-mentioned technical proposal is further illustrated.
Embodiment 1
Aqueous about 75% heavy metal sewage sludges of 250000 t/a, butt cupric about 15wt%, 1.5 ten thousand t/a waste active carbons of collocation, 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 grain size is 10~50mm, heavy metal sewage sludge is dried to water content and is existed
Between 30~45wt%, dry sludge is obtained, carrying out mixing granulation to dry sludge and above-mentioned waste active carbon obtains mud granule.
Above-mentioned wiring board particle is cracked using cracking unit shown in Fig. 3, the wherein 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 oil will crack oil and gas with 5:4 volume ratio carries out mud granule as the fuel of above-mentioned mud granule side-blown
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 sludges of 250000 t/a, butt cupric about 15wt%, 1.5 ten thousand t/a waste active carbons of collocation, 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 grain size is 10~50mm, heavy metal sewage sludge is dried to water content and is existed
Between 30~45wt%, dry sludge is obtained, carrying out mixing granulation to dry sludge and above-mentioned waste active carbon obtains mud granule.
Above-mentioned wiring board particle is cracked using cracking unit shown in Fig. 3, the wherein residence time of wiring board particle is 1h, is split
It is 550 DEG C to solve temperature, obtains cracking flue gas and solid slag；Above-mentioned cracking flue gas progress Oil-gas Separation is obtained into cracking gas and cracking
Then oil will crack oil and gas with 5:3 volume ratio carries out mud granule as the fuel of above-mentioned mud granule side-blown
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 sludges of 250000 t/a, butt cupric about 15wt%, 1.5 ten thousand t/a waste active carbons of collocation, 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 grain size is 10~50mm, heavy metal sewage sludge is dried to water content and is existed
Between 30~45wt%, dry sludge is obtained, carrying out mixing granulation to dry sludge and above-mentioned waste active carbon obtains mud granule.
Above-mentioned wiring board particle is cracked using cracking unit shown in Fig. 3, the wherein residence time of wiring board particle is 1h, is split
It is 450 DEG C to solve temperature, obtains cracking flue gas and solid slag；Above-mentioned cracking flue gas progress Oil-gas Separation is obtained into cracking gas and cracking
Then oil will crack oil and gas with 1:5 volume ratio carries out mud granule as the fuel of above-mentioned mud granule side-blown
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 sludges of 250000 t/a, butt cupric about 15wt%, 1.5 ten thousand t/a waste active carbons of collocation, 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 grain size is 10~50mm, heavy metal sewage sludge is dried to water content and is existed
Between 30~45wt%, dry sludge is obtained, carrying out mixing granulation to dry sludge and above-mentioned waste active carbon obtains mud granule.
Above-mentioned wiring board particle is cracked using cracking unit shown in Fig. 3, the wherein 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 oil will crack oil and gas with 2:5 volume ratio carries out mud granule as the fuel of above-mentioned mud granule side-blown
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 present invention realize following technique effect：
The cracking flue-gas temperature generated due to wiring board cracking is higher and wherein contains 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 and then the part calorific value is made full use of, while caused by avoiding the outer row 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 a kind of
Comparatively ripe technique, can be by the abundant burning under excess oxygen so that the dirt of melting flue gas in the technical process
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.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, any made by repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of processing method of wiring board, which is characterized in that the treating method comprises：
The wiring board is cracked, cracking flue gas and solid slag are obtained；And
The heavy metal sewage sludge is carried out using the cracking flue gas as the part of fuel in the side-blown fusion process of heavy metal sewage sludge
Side-blown melting.
2. processing method according to claim 1, which is characterized in that using the cracking flue gas as described heavy metal-polluted
Before part of fuel in the side-blown fusion process of mud, Oil-gas Separation is carried out to the cracking flue gas and obtains cracking gas and cracked oil,
By the cracking oil and gas with 1:5~5:As the combustion in the side-blown fusion process of heavy metal sewage sludge after 4 volume ratio mixing
Material.
3. processing method according to claim 2, which is characterized in that the processing method further includes making the cracking gas
The cracking process of the wiring board is returned for part of fuel.
4. processing method according to claim 1, which is characterized in that the processing method further includes that the solid slag cools down
Side-blown melting is carried out jointly with heavy metal sewage sludge afterwards.
5. processing method according to claim 2, which is characterized in that described before being cracked to the wiring board
Processing method further includes that the wiring board is carried out to broken process, and the grain size of the preferably broken wiring board is 10~
50mm。
6. processing method according to claim 1, which is characterized in that by the line in closed environment or in nitrogen atmosphere
Road plate is cracked；It is preferred that in the cracking, the residence time of the wiring board is 1~2h, and cracking temperature is 450~550 DEG C.
7. processing method according to claim 1, which is characterized in that split to the wiring board using pyrolysis furnace (13)
The wiring board is supplied the pyrolysis furnace (13), the sealed feeding device by solution using sealed feeding device (12)
(12) include：
Tremie pipe (121), the tremie pipe (121) are arranged for "the" shape, and rotation discharging is provided in the tremie pipe (121)
Valve；
Screw feeder pipe (122) is connected to the tremie pipe (121) and the pyrolysis furnace (13), and the preferably described pyrolysis furnace (13) is
Swinging pyrolysis furnace (13).
8. processing method according to claim 1, which is characterized in that by the heavy metal sewage sludge carry out side-blown melting it
Before, it the treating method comprises：
By the heavy metal sewage sludge be dried to obtain water content 30~45wt% drying sludge；
Mixing granulation is carried out to the dry sludge and activated carbon, obtains mud granule, wherein the activated carbon is the drying
The 5~15% of sludge weight；
The heavy metal sewage sludge carries out side-blown melting in the form of the mud granule, and the preferably described activated carbon is waste active carbon.
9. processing method according to claim 1, which is characterized in that the heavy metal sewage sludge carries out in side-blown fusion process
Melting flue gas is generated, the processing method further includes that the process of heat recovery is carried out to the melting flue gas.
10. processing method according to claim 9, which is characterized in that the processing method further includes to after heat recovery
Flue gas carry out desulfurization, debrominate, out of stock and optional Chu bioxin processing process.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810411602.4A CN108642286B (en) | 2018-05-02 | 2018-05-02 | Circuit board processing method |
| PCT/CN2019/085142 WO2019210846A1 (en) | 2018-05-02 | 2019-04-30 | Circuit board processing method and processing system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810411602.4A CN108642286B (en) | 2018-05-02 | 2018-05-02 | Circuit board processing method |
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| CN108642286B CN108642286B (en) | 2020-07-17 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN110976481A (en) * | 2019-12-09 | 2020-04-10 | 洛南环亚源铜业有限公司 | Copper-containing hazardous waste treatment process |
| CN111411236A (en) * | 2020-04-26 | 2020-07-14 | 中国恩菲工程技术有限公司 | Circuit board smelting system and smelting method |
| 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 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104178220A (en) * | 2014-09-05 | 2014-12-03 | 东莞市宝杰环保科技有限公司 | Tower type biomass gasifier |
| CN106086416A (en) * | 2016-06-22 | 2016-11-09 | 江西自立环保科技有限公司 | The technology that a kind of wiring board waste disposal utilizes |
| CN107828974A (en) * | 2017-10-23 | 2018-03-23 | 广东绿晟环保股份有限公司 | A kind of waste printed circuit board combined treatment process |
-
2018
- 2018-05-02 CN CN201810411602.4A patent/CN108642286B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104178220A (en) * | 2014-09-05 | 2014-12-03 | 东莞市宝杰环保科技有限公司 | Tower type biomass gasifier |
| CN106086416A (en) * | 2016-06-22 | 2016-11-09 | 江西自立环保科技有限公司 | The technology that a kind of wiring board waste disposal utilizes |
| CN107828974A (en) * | 2017-10-23 | 2018-03-23 | 广东绿晟环保股份有限公司 | A kind of waste printed circuit board combined treatment process |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN110976481A (en) * | 2019-12-09 | 2020-04-10 | 洛南环亚源铜业有限公司 | Copper-containing hazardous waste treatment process |
| CN110976481B (en) * | 2019-12-09 | 2021-10-08 | 洛南环亚源铜业有限公司 | Copper-containing hazardous waste treatment process |
| CN111411236A (en) * | 2020-04-26 | 2020-07-14 | 中国恩菲工程技术有限公司 | Circuit board smelting system and smelting method |
| CN111411236B (en) * | 2020-04-26 | 2024-04-05 | 中国恩菲工程技术有限公司 | Smelting system and smelting method of circuit board |
| 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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| CN108642286B (en) | 2020-07-17 |
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