CN109539266A - Old circuit board recycles pyrolysis system and its processing method - Google Patents
Old circuit board recycles pyrolysis system and its processing method Download PDFInfo
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- CN109539266A CN109539266A CN201811399032.8A CN201811399032A CN109539266A CN 109539266 A CN109539266 A CN 109539266A CN 201811399032 A CN201811399032 A CN 201811399032A CN 109539266 A CN109539266 A CN 109539266A
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- Prior art keywords
- boiler tube
- pyrolysis
- connect
- gas outlet
- circuit board
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Classifications
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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
- F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
- F23G5/027—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment pyrolising or gasifying stage
- F23G5/0276—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment pyrolising or gasifying stage using direct heating
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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
- F23G5/08—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
- F23G5/14—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion
- F23G5/16—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion in a separate combustion chamber
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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
- F23G5/44—Details; Accessories
-
- 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
- F23G5/44—Details; Accessories
- F23G5/442—Waste feed arrangements
- F23G5/444—Waste feed arrangements for solid waste
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
- F23J15/022—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
- F23J15/025—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow using filters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
- F23J15/04—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material using washing fluids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
-
- 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
- Y02E20/30—Technologies for a more efficient combustion or heat usage
Abstract
The present invention relates to a kind of old circuit board recycling pyrolysis system and its processing methods.The system comprises: charging cloth mechanism, pyrolysis furnace body, discharging mechanism, secondary combustion chamber, waste-heat recovery device and tail gas processing mechanism；Pyrolysis furnace body includes boiler tube, heating room and heat exchange chamber, and one end of boiler tube connect with charging cloth mechanism and sequentially pass through heat exchange chamber and heating room, and the other end of boiler tube is connect with the discharging mechanism；Pyrolysis gas outlet is offered on boiler tube, pyrolysis gas outlet is between charging cloth mechanism and heat exchange chamber, the connection of the air inlet of pyrolysis gas outlet and secondary combustion chamber, the gas outlet of secondary combustion chamber is connect with the air inlet of the air inlet of waste-heat recovery device and institute's heat exchange chamber respectively, and the gas outlet of heat exchange chamber and the gas outlet of waste-heat recovery device are connect with tail gas processing mechanism.Realize the synthetical recovery processing of the high-efficiency low energy consumption of wiring board.In addition, the invention also provides the processing methods of old circuit board recycling pyrolysis system.
Description
Technical field
The present invention relates to solid wastes recycling recycle and reuse technical field more particularly to a kind of old circuit board recycling heat
Solution system and its processing method.
Background technique
Wiring board is the indispensable component part of electronic product, its internal structure of the different wiring board of purposes and substance group
At also different.Recently as increasing for electron wastes, the quantity of old circuit board is also sharply increased.Wherein waste and old line
Road plate accounts for about the 6% of electron wastes total amount, and China need to handle about 500,000 tons of old circuit board or more every year.
Old circuit board has the characteristics that high environmental hazard and high resource simultaneously.On the one hand, contain in old circuit board
There are a large amount of poisonous and hazardous chemical substances.Wherein brominated flame-retardant and polycyclic aromatic hydrocarbon are persistence organic pollutant, are not easy to be given birth to
Object is metabolized, such as handle it is mishandling, once into environment, will be difficult to estimate to generations such as superficial water, soil, underground water is latent
It is endangering, and is jeopardizing the health of the mankind.
On the other hand, old circuit board resource reclaim value also with higher.In its old circuit board containing gold, silver,
The valuable metals such as the noble metals such as platinum, palladium and copper, lead, tin, nickel, grade are higher than general Gold in Ores category content.
In today that natural resources disparities between supply and demand are becoming increasingly acute, the recycling treatment of old circuit board is of crucial importance, money
Sourceization recovery processing has become the hot spot in solid wastes recycling field.But due to the complexity of wiring board constituent itself,
The recovery method as resource being widely used at present is difficult to realize its high efficiency, high-quality, the cleaning recovery processing of the recycling of low energy consumption.
In conclusion it is necessary to study a kind of novel continous way energy conservation and environmental protection wiring board recovery gear is developed, to solve
The problem of old circuit board disposal of resources at present.
Summary of the invention
The technical problems to be solved by the present invention are: the synthetical recovery treatment effeciency low energy consumption of wiring board is high.
In order to solve the above technical problems, the invention proposes a kind of old circuit board recycling pyrolysis system and its processing sides
Method.
The invention proposes a kind of old circuit board recycle pyrolysis system, comprising: charging cloth mechanism, pyrolysis furnace body,
Discharging mechanism, secondary combustion chamber, waste-heat recovery device and tail gas processing mechanism；
The pyrolysis furnace body includes boiler tube, heating room and heat exchange chamber, one end of the boiler tube and the charging cloth
Mechanism connects and sequentially passes through the heat exchange chamber and the heating room, and the other end of the boiler tube and the discharging mechanism connect
It connects；
Pyrolysis gas outlet is offered on the boiler tube, the pyrolysis gas outlet is located at the charging cloth mechanism and changes with described
Between hot chamber, the pyrolysis gas outlet is connect with the air inlet of the secondary combustion chamber, the gas outlet of the secondary combustion chamber
It is connect respectively with the air inlet of the air inlet of the waste-heat recovery device and the heat exchange chamber, the outlet of the heat exchange chamber
The gas outlet of mouth and the waste-heat recovery device is connect with the tail gas processing mechanism.
Further, the heating room includes first shell, heater and heating supporting plate；The heater and the heating
Supporting plate is set in the first shell, and the heater is set to the two sides up and down of boiler tube, and the heating supporting plate is fixed on the furnace
On the outer surface of the downside of pipe.
Preferably, the inner surface of the first shell is equipped with refractory insulating layer.
It preferably, further include transmission mechanism, the transmission mechanism includes transmission belt, and the transmission belt passes through the boiler tube；
The charging cloth mechanism includes distributing device, and the discharge port of the distributing device is located at the top of the transmission belt, is used for material
In distribution to the transmission belt；
Preferably, the distributing device includes second shell, drapery panel, push rod, driving part, and one end of the drapery panel is solid
Due on the inner surface of the second shell, the other end of the drapery panel is connect with the push rod, and the push rod passes through described
Shell is connect with the driving part, and the driving part drives the push rod to be moved forward or rearward to change the drapery panel
Gradient.
Further, the charging cloth mechanism further includes feed space, the discharge port of the feed space and the distributing device
Feed inlet connection；Upper layer pneumatic gate valve is equipped at the feed inlet of the feed space, the discharge outlet of the feed space is equipped with
Lower layer's pneumatic gate valve.
Further, the both ends of the transmission belt are respectively equipped with sealing mechanism, and the sealing mechanism includes preceding auxiliary wheel, storage
Sink, pinch roller, fixing seat, dehydrater, rear auxiliary wheel；The fixing seat is installed in water storage tank, and the pinch roller is fixed on fixation
On seat, the transmission belt passes through below pinch roller；The end of the boiler tube extends in the water storage tank, the preceding auxiliary wheel
It is installed on the outer surface of the side wall of the water storage tank, the rear auxiliary wheel is installed in boiler tube, and the dehydrater includes driving
Part and water removal sections, the drive part are installed on the outer surface of the tube wall of the boiler tube, the water removal sections and the drive
Dynamic part connects, and is installed on the inner surface of tube wall of the boiler tube.
It further, further include cooling body, the cooling body is located between the discharging mechanism and the heating room,
The cooling body is set to the outer surface of the boiler tube, and the cooling body includes cooling jacket, is connected in the cooling jacket
Cooling circulating water.
Preferably, the discharging mechanism includes rotating disc type discharge device and tapping channel, the rotating disc type discharge device with it is described
Tapping channel connection, the rotating disc type discharge device includes material scraping plate, rotary tray motor, turntable mounting and support wheel；The support wheel is set
In the bottom of the turntable mounting, positioned at the upper surface of the transmission belt；The rotary tray motor is connected by flange and the turntable mounting
It connects, for driving the turntable mounting to rotate；The end of the turntable mounting is arranged in the material scraping plate, and the material scraping plate is used for object
Material is scraped in the tapping channel.
Preferably, the tail gas processing mechanism includes the flash cold column being sequentially connected in series, dry type reaction unit, bag-type dust
The gas outlet of device, air-introduced machine and lye spray column, the air inlet of the flash cold column and the heat exchange chamber and the waste heat return
The gas outlet of receiving apparatus connects.
Preferably, the waste-heat recovery device includes shell and liner, and the liner is sheathed in the shell, described outer
There are cavity between shell and the liner, the cavity is interior to be filled with air, the air inlet of the liner and the second-time burning
Room connection, the gas outlet of the liner is connect with the tail gas processing mechanism.
In addition, the invention also provides the processing methods of old circuit board described above recycling pyrolysis system, including with
Lower step:
S1, wiring board enter boiler tube from charging cloth mechanism, are burnt by oven heats and generate pyrolysis gas and regenerant；
S2, the pyrolysis gas enter secondary combustion chamber burning from pyrolysis gas outlet, and the tail gas of generation respectively enters heat exchanging chamber
Enter tail gas processing mechanism after room and waste-heat recovery device cooling to handle；
S3, regenerant are discharged from discharging mechanism.
The beneficial effect of the present invention compared with the prior art includes: that one end of boiler tube is connect with charging cloth mechanism, and according to
Secondary to pass through heat exchange chamber and heating room, the other end of boiler tube is connect with discharging mechanism, and wiring board is entered from cloth feeding mechanism
Boiler tube carries out burning in the position of heating room and generates pyrolysis gas, and pyrolysis gas is from set between charging cloth mechanism and heat exchange chamber
Boiler tube on pyrolysis gas outlet enter secondary combustion chamber and carry out second-time burning, a large amount of organic principle is contained in pyrolysis gas,
Can spontaneous combustion to reduce the loss of natural gas in secondary combustion chamber, the tail gas of generation with secondary combustion chamber respectively by more than connecting
Heat recovery apparatus and heat exchange chamber cool down, and in heat exchange chamber, the wiring board in boiler tube can be transferred heat to, to line
Road plate is preheated, and the subsequent combustion pyrolysis of wiring board is conducive to, and the tail gas after cooling is passed through tail gas processing mechanism and is handled,
The regenerant that wiring board after burning generates is excluded from discharging mechanism, at the synthetical recovery for realizing the high-efficiency low energy consumption of wiring board
Reason.
Detailed description of the invention
The features and advantages of the present invention will be more clearly understood by referring to the accompanying drawings, and attached drawing is schematically without that should manage
Solution is carries out any restrictions to the present invention, in the accompanying drawings:
Fig. 1 is the structural schematic diagram of old circuit board recycling pyrolysis system in the embodiment of the present invention.
Fig. 2 is the structural schematic diagram of charging cloth mechanism in the embodiment of the present invention.
Fig. 3 is the structural schematic diagram of discharging mechanism in the embodiment of the present invention.
Fig. 4 is the structural schematic diagram of distributing device in the embodiment of the present invention.
Fig. 5 is the structural schematic diagram of transmission mechanism in this face embodiment.
1, charging cloth mechanism；11, distributing device；111, second shell；112, drapery panel；113, push rod；114, driving portion
Part；115, screw regulator；116, the first observation window；12, feed space；121, upper layer pneumatic gate valve；122, lower layer pneumatically inserts
Plate valve；123, the second observation window；2, it is pyrolyzed furnace body；20, cooling body；21, boiler tube；211, pyrolysis gas outlet；212, boiler tube
Bending port；22, room is heated；221, first shell；222, heater；223, supporting plate is heated；23, heat exchange chamber；3, it discharges
Mechanism；31, rotating disc type discharge device；311, material scraping plate；312, rotary tray motor；313, turntable mounting；314, support wheel；32, discharging is logical
Road；40, feed zone；41, preheating section；42, pyrolysis section；43, cooling section；44, discharging section；6, transmission mechanism；61, transmission belt；62,
Driven wheel；63, it is tensioned trolley；64, weight member；65, decelerating motor；66, driving wheel；7, sealing mechanism；71, preceding auxiliary wheel；
72, water storage tank；73, pinch roller；74, fixing seat；75, dehydrater；76, rear auxiliary wheel；81, secondary combustion chamber；811, burner；
812, oxygenating blower；82, waste-heat recovery device；83, flash cold column；84, dry type reaction unit；85, bag filter；86, air inducing
Machine；87, lye spray column；871, spray thrower；88, chimney.
Specific embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing to the present invention
Specific embodiment be described in detail.Many details are explained in the following description in order to fully understand this hair
It is bright.But the invention can be embodied in many other ways as described herein, those skilled in the art can be not
Similar improvement is done in the case where violating intension of the present invention, therefore the present invention is not limited to the specific embodiments disclosed below.
As shown in Figs. 1-5, present embodiments provide a kind of old circuit board recycling pyrolysis system, mainly by pyrolysis section and
Tail gas hazard-free processing unit is grouped as.
The pyrolysis section uses horizontal type steel belt furnace structure, mainly by feed zone 40, preheating section 41, pyrolysis section 42, cooling
Section 43, discharging section 44 form.
In conjunction with Fig. 1, the old circuit board that the present embodiment proposes recycles pyrolysis system, comprising: charging cloth mechanism 1, pyrolysis
Furnace body 2, discharging mechanism 3, secondary combustion chamber 81, waste-heat recovery device 82 and tail gas processing mechanism；
Being pyrolyzed furnace body 2 includes boiler tube 21, heating room 22 and heat exchange chamber 23, one end and the charging cloth mechanism of boiler tube 21
1 connects and sequentially passes through heat exchange chamber 23 and heating room 22, and the other end of boiler tube 21 is connect with discharging mechanism 3；
Pyrolysis gas outlet 211 is offered on boiler tube 21, pyrolysis gas outlet 211 is located at charging cloth mechanism 1 and heat exchange chamber
Between 23, pyrolysis gas outlet 211 is connect with the air inlet of secondary combustion chamber 81, the gas outlet of secondary combustion chamber 81 respectively with waste heat
The air inlet of recyclable device 82 and the air inlet connection of heat exchange chamber 23, the gas outlet of heat exchange chamber 23 and waste heat recycling dress
82 gas outlet is set to connect with the tail gas processing mechanism.Preferably, tail gas enters from 81 bottom of secondary combustion chamber, logical from top
Piping connection enters 82 top of waste-heat recovery device.
Heat exchange chamber connects waste-heat recovery device and tail gas processing mechanism by utilidor, when tail gas processing mechanism starts
When operation, high-temperature tail gas is delivered to heat exchange chamber by utilidor by waste-heat recovery device, passes through the heat pair of high-temperature tail gas
Wiring board material into preheating section is heated, and realizes the recycling of the energy.
Pyrolysis section in boiler tube is the main traffic coverage of wiring board pyrolysis, and the organic polymer component part of wiring board exists
The condition of anaerobic is heated pyrolysis and generates in the form of a vapor at small organic molecule, the gaseous organic substance quilt that the pyrolysis generates
Utilidor is delivered to secondary combustion chamber, is pyrolyzed the ingredients such as remaining metal and glass fibre and continues on to cooling by steel band
Section.
On the basis of the above embodiments, room 22 is heated in the present embodiment to include first shell 221, heater 222 and add
Hot supporting plate 223；Heater 222 and heating supporting plate 223 are set in first shell 221, and heater 222 is set to up and down the two of boiler tube 21
Side, heating supporting plate 223 are located at the lower section of boiler tube 21, and heating supporting plate 223 is fixed on the outer surface of 21 downside of boiler tube.By upper and lower
Two groups of heaters are run simultaneously, are evenly heated to material in pyrolysis section boiler tube, realize the excellent cross section of pyrolysis section boiler tube
Thermal uniformity.The boiler tube of the pyrolysis section is erected on heating supporting plate, is usually heated supporting plate and is used intensity height, high temperature resistant, heat transfer
Uniformly, the material of excellent thermal conductivity, the heating section palet can prevent boiler tube from expanding and producing when being heated
Change shape.
On the basis of the above embodiments, the inner surface of first shell 221 is equipped with refractory insulating layer in the present embodiment.It reduces
Thermal loss caused by heat radiation and heat transfer.
On the basis of the above embodiments, the present embodiment further includes transmission mechanism 6, and transmission mechanism 6 includes transmission belt 61, is passed
Defeated band 61 passes through boiler tube 21；Charging cloth mechanism 1 includes distributing device 11, and the discharge port of distributing device 11 is located at the upper of transmission belt 61
Side, for being distributed material to transmission belt 61；
Distributing device 11 includes second shell 111, drapery panel 112, push rod 113, driving part 114, one end of drapery panel 112
It is fixed on the inner surface of second shell 111, the other end of drapery panel 112 is connect with push rod 113, and push rod 113 passes through second shell
Body 111 is connect with driving part 114, and 114 driving push rod 113 of driving part is moved forward or rearward to change the drapery panel
Gradient.One end of drapery panel is fixed on second shell inner surface, and the other end is connect with push rod, and push rod passes through shell and driving
Component connection, under driving part driving effect, push rod can be moved forward or rearward and then change the gradient of drapery panel；Route
Plate is redistributed by drapery panel to the transmission belt 61 of transmission mechanism 6 from the feed inlet of distributing device, in the buffer function of drapery panel
Under ensure that wiring board is evenly distributed in transmission belt 61, wiring board transmission belt distribution situation by drapery panel gradient institute
Control is moved forward or rearward the rate for the gradient change charging for changing drapery panel by driving part driving push rod to control
Distribution situation of the wiring board processed in transmission belt, to can ensure that the speed of also controllable charging while wiring board is evenly distributed
Rate.
It should be noted that the transmission belt 61 in the present embodiment is ring steel belt.Steel band is resistant to the high temperature in boiler tube.
On the basis of the above embodiments, the transmission mechanism 6 in the present embodiment further includes weight member 64, tensioning trolley
63, driving wheel 66, driven wheel 62 and decelerating motor 65；Tensioning trolley 63 is connect with weight member 64, and driven wheel 62 is set to tensioning
In trolley 66, and ring steel belt 61 is wound on driven wheel 62 and driving wheel 66；Driving wheel 66 and decelerating motor 65 are electrically connected, when
When decelerating motor 65 drives driving wheel 66 to move, by the effect of frictional force, driving wheel 66 drags steel band 61 and starts persistent movement,
The cooperation rotation of driven wheel 62, guarantees the normal operation of transmission mechanism.Further, cracking furnace body 2 is arranged in driving wheel 66
The burner of cracking furnace body 2 is arranged in furnace tail, driven wheel 62, and driven wheel 62 is mounted on tensioning trolley 63, and tensioning trolley 63 is adopted
With counterweight tension mode, when 61 expanded by heating of ring steel belt changes length, pulling of the tensioning trolley 63 in weight member
Lower forward end operation guarantees steel band by constant tension.Decelerating motor provides the power of steel band operation, while also adjustable steel
The speed of service of band is to adapt to a variety of hot wiring board solution recovery processing techniques；The steel band driven structure is by driven wheel and tenses small
Vehicle composition, the driven wheel carrier, which is located at, to be tensed on trolley, and the tensioning trolley is pulled by counterweight, the tensioning for keeping constant steel band
Degree, avoiding the steel band in pyrolytic process because high-temperature expansion deforms influences the normal conveying operation of steel band.
In the present embodiment, distributing device 11 further includes screw regulator 115, one end of screw regulator 115 and driving part
114 connections, the other end and push rod 113 connect.When material or pyrolysis furnace production technology change, driving part 114 is driven
The rotation of screw regulator 115 changes its helicity, and then controls push rod 113 and move forward or backward, and drapery panel 112 is pulled to change
Its gradient realizes the adjusting of cloth effect.Further, material-feeding mechanism is equipped with the first observation window 116 on the second housing.Side
Just cloth situation is observed.
On the basis of the above embodiments, charging cloth mechanism 1 further includes feed space 12 in the present embodiment, feed space 12
Discharge port is connect with the feed inlet of distributing device 11；Upper layer pneumatic gate valve 121, the charging are equipped at the feed inlet of feed space 12
The discharge outlet of room is equipped with lower layer's pneumatic gate valve 122.When material enters feed space from feed inlet, the pneumatic plate in upper layer is first opened
Valve, material close upper layer pneumatic gate valve after entering to the charging transitional storehouse of feeding mechanism, open lower layer's pneumatic gate valve later,
Material enters distributing device, communicates so as to avoid distributing device with ambient atmosphere, largely avoids air and enters to cloth
In device, only entered in distributing device by the air that material is brought into a little.
On the basis of the above embodiments, the charging cloth mechanism 1 in the present embodiment further includes vacuum displacement device 13, very
Vacant changing device 13 is connect with feed space 12, and vacuum displacement device 13 is for vacuumizing the charging transitional storehouse of feed space 12
Displacement cleaning.Vacuum displacement device, which will feed transitional storehouse, which carries out vacuumize process, to remove the air brought into material, from
And it realizes and thoroughly air is avoided to enter to material-feeding mechanism.
Further, feed space 12 is equipped with the second observation window 123.Facilitate observation cloth situation.
In order to guarantee that the Non-oxygen pyrolytic effect of old circuit board is transmitted in the present embodiment on the basis of the above embodiments
Both ends with 61 are respectively equipped with sealing mechanism 7, and steel band described in the present embodiment is exported in the feed zone import of boiler tube and discharging section
Place is equipped with sealing mechanism 7, sealing mechanism 7 include preceding auxiliary wheel 71, water storage tank 72, pinch roller 73, fixing seat 74, dehydrater 75,
Auxiliary wheel 76 afterwards；Fixing seat 74 is installed in water storage tank 72, and pinch roller 73 is fixed in fixing seat 74, and transmission belt 121 is from pinch roller 73
Lower section pass through；The end of boiler tube 21 extends in water storage tank 72, and preceding auxiliary wheel 71 is installed on the outer of the side wall of the water storage tank
On surface, rear auxiliary wheel 76 is installed in boiler tube, and dehydrater 75 includes drive part and water removal sections, the drive part installation
In the outer surface of the tube wall of boiler tube 21, the water removal sections connect with the drive part and are installed on the interior of the tube wall of boiler tube 21
On surface.Transmission belt first passes through water storage tank and enters back into boiler tube, carries out fluid-tight by the water in water storage tank, avoids and pass through transmission
Band brings air in boiler tube into.Because steel band is in continuous motion state, the both ends of the boiler tube are steel band inlet and outlet,
In order to ensure sealing effect good in boiler tube realizes Non-oxygen pyrolytic, the both ends of boiler tube are both designed as the structure bent downward,
The bending port 212 of boiler tube is located at the both ends of boiler tube as seen from Figure 1, so that it is guaranteed that the inlet and outlet at the both ends of steel band submerge
Below liquid level.
In the present embodiment the water storage tank be SUS304 material, the material resistance to corrosion is strong, water storage tank be preferably on
The square sink of hatch frame, inside can store a certain amount of pure water, and lower part is provided with manually-operated gate, facilitate periodic replacement pure
Water.Disorderly transmission belt is fixed as the U-shaped that can be driven by cooperation pinch roller in water storage tank for preceding auxiliary wheel and rear auxiliary.Before described
Auxiliary wheel and rear auxiliary wheel avoid endless conveyor belts from rubbing when cracking furnace body operation with cracking other positions of furnace body,
Prevent the normal operation to cracking furnace body from having an impact.A part of boiler tube is fixed in water storage tank by the boiler tube fixing piece,
21 one end of boiler tube is completely submerged in below the liquid level of water storage tank, and steel band enters in boiler tube in water, avoids and bring air into furnace
Pipe.
On the basis of the above embodiments, the present embodiment further includes cooling body 20, and cooling body 20 is located at discharging mechanism 3
Between heating room 22, cooling body 20 is set to the outer surface of boiler tube 21, and cooling body 20 includes cooling jacket, the cooling folder
Cooling circulating water is connected in set.The ingredients such as remaining metal and glass fibre are transported by steel band to cooling section after wiring board pyrolysis
When, the cooling water in the recirculated water cooling collet of the cooling body absorbs its heat, accelerates the cooling velocity of regenerant, reduces cold
But the time required to, pyrolysis production run efficiency is provided.
On the basis of the above embodiments, discharging mechanism 3 includes rotating disc type discharge device 31 and tapping channel in the present embodiment
32.Further, rotating disc type discharge device 31 includes material scraping plate 311, rotary tray motor 312, turntable mounting 313 and support wheel 314；Support
Wheel 314 is located at the bottom of turntable mounting 313, positioned at the upper surface of transmission belt 61；Rotary tray motor 312 passes through flange and turntable mounting 313
Connection, for driving turntable mounting 313 to rotate；The end of turntable mounting 313 is arranged in material scraping plate 311, and material scraping plate 311 is used for material
It scrapes in tapping channel 32.Rotary tray motor drives turntable mounting rotation, and support wheel is able to maintain that turntable mounting rotates in transmission belt, makes
It obtains material scraping plate to scrape the cracking slag in transmission belt into discharge bucket, discharging mechanism is entered by discharge bucket.Preferably, the turntable mounting
For round turntable frame.The rotating disc type discharge device is fed by circular-rotation, so that material is entered discharging from the two sides of transmission belt and is led to
In road.
It should be noted that the feed inlet of tapping channel described in the present embodiment is funnel-form feed inlet, the turntable goes out
Material device is connected to by funnel-form feed inlet with the tapping channel.Ensure that material can accurately enter to tapping channel.This reality
It applies in example, the structure of tapping channel and the structure of feeding mechanism are identical, (are equivalent to charger in the discharging transitional storehouse of tapping channel
The charging transitional storehouse of structure) on also be provided with vacuum displacement device 14.
On the basis of the above embodiments, tail gas processing mechanism described in the present embodiment includes the quenching being sequentially connected in series
Tower 83, dry type reaction unit 84, bag filter 85, air-introduced machine 86, lye spray column 87 and chimney 88, the air inlet of flash cold column 83
Mouth is connect with the gas outlet of the gas outlet of heat exchange chamber 23 and waste-heat recovery device 82.For the effect for guaranteeing spray, lye spray
Drenching tower 87 includes two concatenated lye spray columns, referred to as second level spray column, and setting is recyclable in the second level spray column
Spray the spray thrower 871 of lye.Tail gas processing mechanism in the present embodiment further includes chimney 88, the gas outlet of the spray column with
The chimney 88 connects.Chimney discharges into tail gas height of the harmless treatment after up to standard in atmosphere, completes tail gas hazard-free processing
Process.
In the present embodiment, secondary combustion chamber 81 includes third shell, burner 811 and oxygenating blower 812, burner
811 are located in third shell, and oxygenating blower 812 is connected to the inside of third shell, are that the burning of gas supplies oxygen.Further,
There is real time temperature detector in the third shell of secondary combustion chamber 81, it, can when the temperature in second-time burning room is lower than 1100 DEG C
Again it automatically turns on neat gas burner or increases combustion power, temperature is promoted rapidly.
On the basis of the above embodiments, waste-heat recovery device 82 includes shell and liner, the liner in the present embodiment
It is sheathed in the shell, there are cavity between the shell and the liner, the cavity is interior to be filled with air, the liner
Air inlet connect with secondary combustion chamber 81, the gas outlet of the liner is connect with the tail gas processing mechanism.High-temperature tail gas from
It is from top to bottom flowed through in liner, empty from the bottom to top pass through of the cold air between shell and liner exchanges heat with high-temperature tail gas,
The hot-air of generation passes through pipeline to oxygenating blower.High-temperature tail gas after heat exchange enters flash cold column 83 by pipeline connection
Top.
It should be noted that the gas quilt cemented out in the charging cloth mechanism and tapping channel by nitrogen displacer
The displacement room surge tank of pipeline connection is delivered to the after burner centralized processing in tail gas hazard-free processing system after collecting.
Vent gas treatment process is as follows: the gas in pyrolysis gas and displacement room surge tank enters secondary combustion chamber by pipeline
It is interior, 1100 DEG C are heated to by the burner combustion in secondary combustion chamber, oxygenating is carried out by oxygenating blower, realizes secondary combustion chamber
Interior gas is more than 2s or more in 1100 DEG C of oxy combustions, and burner can be closed after pyrolysis system stable operation and passes through pyrolysis gas
Own combustion heat supply, the high-temperature tail gas after second-time burning enter waste-heat recovery device, a part of high-temperature tail gas by utilidor
Heat exchange chamber is delivered to by utilidor, and the cold air in remaining gas and waste-heat recovery device between shell and liner exchanges heat drop
Temperature, the hot-air after heat exchange are sent the air of heat to secondary combustion chamber by oxygenating blower by pipeline to oxygenating blower, than
Cold air is played, hot-air is conducive to the temperature of stable secondary combustion chamber, the high temperature tail in waste-heat recovery device and heat exchange chamber
Gas is down to 600 DEG C or more from 1100 DEG C, avoids gas temperature is too low dioxin is caused to regenerate, then enters flash cold column by pipeline
In, 600 DEG C of tail gas is quenched to 200 DEG C in 0.5s by the sig water of atomizing spray, skips the regeneration of dioxin rapidly
Section avoids dioxin from regenerating.Tail gas after quenching is sprayed active powdered carbon in dry type reaction unit 84 and calcium lime powder occurs
Absorption and neutralization, subsequent tail gas enter bag filter at 150 DEG C, intercept flying dust and the spray of dry type reaction unit collected in tail gas
The active powdered carbon and calcium lime powder penetrated, the dioxin fragment in absorption tail gas neutralize the sour gas in tail gas, bag filter
In the tail gas that comes out enter in two-stage lye spray column to be sprayed by lye by air-introduced machine and neutralize and be cooled to 60 DEG C or so, be atomized
Spray can be achieved to come into full contact with tail gas, at the same sig water can also highly effective reaction remove the oxynitrides in tail gas；Air inducing
Machine will be pumped into negative pressure in the innoxious system of entire flue gas, guide the flow direction of flue gas, so far tail gas is reached by harmless treatment
To discharge standard, then entered in atmosphere by smoke stack emission.Burner in the above process, oxygenating blower, waste-heat recovery device,
Flash cold column, dry type reaction unit and lye spray column can be monitored and be automated accordingly feedback by electric control system and be adjusted
Section control.
The present embodiment also proposes the processing method of old circuit board recycling pyrolysis system described above, including following step
It is rapid:
S1, wiring board enter boiler tube from charging cloth mechanism, are burnt by oven heats and generate pyrolysis gas and regenerant；
S2, the pyrolysis gas enter secondary combustion chamber burning from pyrolysis gas outlet, and the tail gas of generation respectively enters heat exchanging chamber
Enter tail gas processing mechanism after room and waste-heat recovery device cooling to handle；S3, regenerant are discharged from discharging mechanism.Regenerant packet
Include the ingredients such as metal and glass fibre.
In addition to this, the present invention also has the advantages that
1) old circuit board recycling pyrolysis system of the invention can be used electric control system and be monitored and feedback regulation,
Fully automatic operation after process flow setting can also be carried out by operating room simultaneously, reduces manual operation, simplification of flowsheet improves
Production efficiency.
2) pyrolysis system heater of the invention can adjust its temperature by setting and is pyrolyzed with adapting to a variety of old circuit boards
Technique.
3) continous way wiring board of the invention pyrolysis recycling outfit is suitable for the large-scale old circuit board of continous way
It is pyrolyzed remanufacture, there is relatively broad market application prospect.
4) continous way wiring board of the invention pyrolysis recycling outfit is set by UTILIZATION OF VESIDUAL HEAT IN, temperature setting adjusting etc.
Meter, reduces equipment energy consumption, realizes the purpose of energy-saving and emission-reduction.
5) tail gas hazard-free processing system of the invention realizes exhaust emissions by the vent gas treatment design of reasonable science
It is up to standard, meet environmental requirement.
6) continous way energy conservation and environmental protection wiring board of the invention pyrolysis recycling outfit, realizes organic high score in wiring board
The effective, harmlessization processing of the high-efficiency thermal decomposition and tail gas of subconstiuent, is conducive to be pyrolyzed the subsequent separation of rear board and Metallurgical department
Reason.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Each technical characteristic of embodiment described above can carry out arbitrarily
Combination, for simplicity of description, it is not all possible to each technical characteristic in above-described embodiment combination be all described, so
And as long as there is no contradiction in the combination of these technical features, it all should be considered as described in this specification.
Claims (10)
1. a kind of old circuit board recycles pyrolysis system characterized by comprising charging cloth mechanism, pyrolysis furnace body, discharging
Mechanism, secondary combustion chamber, waste-heat recovery device and tail gas processing mechanism；
The pyrolysis furnace body includes boiler tube, heating room and heat exchange chamber, one end of the boiler tube and the charging cloth mechanism
The heat exchange chamber and the heating room are connected and sequentially pass through, the other end of the boiler tube is connect with the discharging mechanism；
Pyrolysis gas outlet is offered on the boiler tube, the pyrolysis gas outlet is located at the charging cloth mechanism and the heat exchanging chamber
Between room, the pyrolysis gas outlet is connect with the air inlet of the secondary combustion chamber, the gas outlet difference of the secondary combustion chamber
Connect with the air inlet of the air inlet of the waste-heat recovery device and the heat exchange chamber, the gas outlet of the heat exchange chamber with
And the gas outlet of the waste-heat recovery device is connect with the tail gas processing mechanism.
2. old circuit board according to claim 1 recycles pyrolysis system, which is characterized in that the heating room includes first
Shell, heater and heating supporting plate；The heater and the heating supporting plate are set in the first shell, and the heater is set
In on the outer surface for the downside that the boiler tube is fixed in the two sides up and down of boiler tube, the heating supporting plate.
3. old circuit board according to claim 2 recycles pyrolysis system, which is characterized in that the interior table of the first shell
Face is equipped with refractory insulating layer.
4. old circuit board according to claim 1 recycles pyrolysis system, which is characterized in that it further include transmission mechanism, institute
Stating transmission mechanism includes transmission belt, and the transmission belt passes through the boiler tube；The charging cloth mechanism includes distributing device, the cloth
The discharge port of glassware is located at the top of the transmission belt, for being distributed material to the transmission belt；
The distributing device includes second shell, drapery panel, push rod, driving part, and one end of the drapery panel is fixed on described
On the inner surface of two shells, the other end of the drapery panel is connect with the push rod, the push rod pass through the shell with it is described
Driving part connection, the driving part drive the push rod to be moved forward or rearward to change the gradient of the drapery panel.
5. old circuit board according to claim 4 recycles pyrolysis system, which is characterized in that the charging cloth mechanism is also
Including feed space, the discharge port of the feed space is connect with the feed inlet of the distributing device；It is set at the feed inlet of the feed space
There is the discharge outlet of upper layer pneumatic gate valve, the feed space to be equipped with lower layer's pneumatic gate valve.
6. old circuit board according to claim 4 recycles pyrolysis system, which is characterized in that the both ends of the transmission belt point
Not She You sealing mechanism, the sealing mechanism includes preceding auxiliary wheel, water storage tank, pinch roller, fixing seat, dehydrater, rear auxiliary wheel；Institute
It states fixing seat to be installed in water storage tank, the pinch roller is fixed in fixing seat, and the transmission belt passes through below pinch roller；It is described
The end of boiler tube extends in the water storage tank, on the outer surface for the side wall that the preceding auxiliary wheel is installed on the water storage tank, institute
It states rear auxiliary wheel to be installed in boiler tube, the dehydrater includes drive part and water removal sections, and the drive part is installed on institute
The outer surface of the tube wall of boiler tube is stated, the water removal sections are connect with the drive part, and be installed on the tube wall of the boiler tube
On inner surface.
7. old circuit board according to claim 4 recycles pyrolysis system, which is characterized in that the discharging mechanism includes turning
Disk discharging device and tapping channel, the rotating disc type discharge device are connect with the tapping channel, and the rotating disc type discharge device includes
Material scraping plate, rotary tray motor, turntable mounting and support wheel；The support wheel is located at the bottom of the turntable mounting, is located at the transmission belt
Upper surface；The rotary tray motor is connect by flange with the turntable mounting, for driving the turntable mounting to rotate；The scraper
The end of the turntable mounting is arranged in plate, and the material scraping plate is for entering material scraper in the tapping channel.
8. old circuit board according to claim 1 recycles pyrolysis system, which is characterized in that the tail gas processing mechanism packet
Include the flash cold column being sequentially connected in series, dry type reaction unit, bag filter, air-introduced machine and lye spray column, the flash cold column
Air inlet connect with the gas outlet of the gas outlet of the heat exchange chamber and the waste-heat recovery device.
9. old circuit board according to claim 1 recycles pyrolysis system, which is characterized in that the waste-heat recovery device packet
Shell and liner are included, the liner is sheathed in the shell, and there are cavity, the cavitys between the shell and the liner
Interior to be filled with air, the air inlet of the liner is connect with the secondary combustion chamber, the gas outlet of the liner and the tail gas
Processing mechanism connection.
10. the processing method of -9 described in any item old circuit board recycling pyrolysis systems, feature exist according to claim 1
In, comprising the following steps:
S1, wiring board enter boiler tube from charging cloth mechanism, are burnt by oven heats and generate pyrolysis gas and regenerant；
S2, the pyrolysis gas from pyrolysis gas outlet enter secondary combustion chamber burning, the tail gas of generation respectively enter heat exchange chamber and
Enter tail gas processing mechanism after waste-heat recovery device cooling to handle；
S3, regenerant are discharged from discharging mechanism.
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| CN201811399032.8A CN109539266A (en) | 2018-11-22 | 2018-11-22 | Old circuit board recycles pyrolysis system and its processing method |
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| CN201811399032.8A CN109539266A (en) | 2018-11-22 | 2018-11-22 | Old circuit board recycles pyrolysis system and its processing method |
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| CN114951230A (en) * | 2022-05-10 | 2022-08-30 | 新疆中博启瑞农业科技有限公司 | Low-purity residual film pyrolysis separation and recovery equipment and method |
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