CN108517412A - Production system based on pyrolysis and the industrial copper powder of hydrogen embrittlement principle production - Google Patents
Production system based on pyrolysis and the industrial copper powder of hydrogen embrittlement principle production Download PDFInfo
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- CN108517412A CN108517412A CN201810488840.5A CN201810488840A CN108517412A CN 108517412 A CN108517412 A CN 108517412A CN 201810488840 A CN201810488840 A CN 201810488840A CN 108517412 A CN108517412 A CN 108517412A
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/023—Hydrogen absorption
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
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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
- C22B15/00—Obtaining copper
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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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Abstract
The present invention relates to the technical field of industrial copper powder production, the production system based on pyrolysis and the industrial copper powder of hydrogen embrittlement principle production is disclosed, includes in the rotary furnace of sleeping shape rotation arrangement, multistage cooling spiral system, turbine crushing system and powdered copper concentrate ball mill；Rotary furnace is placed in heating furnace, and heating ring cavity is formed between rotary furnace and heating furnace, by fuel combustion to turning round stove heat in heating ring cavity；The multistage cooling spiral system of rotary furnace connection, the copper particle formed after revolution stove heat pyrolysis is conveyed by multistage cooling spiral system screw and cooling；The copper particle that turbine crushing system transports out multistage cooling spiral system crushes, and removes the carbon black after pyrolysis；Treated that copper particle is ground into industrial copper powder by turbine crushing system for powdered copper concentrate ball mill；The present invention realizes the preparation of the supper fine refined copper powder (1000~1250 mesh) of high-purity, whole preparation process energy conservation and environmental protection, and the standard copper powder of preparation is high-quality, grade is high.
Description
Technical field
The present invention relates to the technical fields of industrial copper powder production, are based especially on pyrolysis and the industrial copper powder of hydrogen embrittlement principle production
Production system.
Background technology
Industrial copper powder is widely used in powder metallurgy, electrical carbon product, electronic material, metallic paint, chemical catalyst, filtering
The electromechanical components such as device, heat-dissipating pipe and electronic flight field.
Printed wiring board (abbreviation PCB) is most basic most active electronic unit, is indispensable important of electronic industry
Component part.A report of the United Nations points out, the whole world is more than that 1/3 electronic product originates from China, global 70% electronics rubbish
Rubbish also flows to China.2010, China's PCB yield accounted for the 38.1% of World PCB market, was first place in the world；It is expected that 2017
Year, the global share of China PCB is up to 44.13%, becomes PCB manufactures big country worthy of the name.
A large amount of tailing is will produce during printed wiring board processing and manufacturing, is contained in the tailing of printed wiring board
There is a large amount of copper metal, there is high economic value.
In the prior art, the tailing of printed wiring board is directly sold for smeltery and is handled at present, impurity containing slicker solder
Difficulty is brought to smelting and with the presence of heavy metal pollution, product impurity level is also higher, and purity is low, and prouctiveness is low.
Invention content
The purpose of the present invention is to provide the production systems based on pyrolysis and the industrial copper powder of hydrogen embrittlement principle production, it is intended to solve
Industrial copper powder is prepared in the prior art not environmentally, the problem of high energy consumption, poor product quality.
The invention is realized in this way the production system based on pyrolysis and the industrial copper powder of hydrogen embrittlement principle production, for being pyrolyzed
Organic resin in the tailing of printed circuit board, while making copper that hydrogen embrittlement occur to prepare copper powder, including be in sleeping shape rotation cloth
Rotary furnace, multistage cooling spiral system, turbine crushing system and the powdered copper concentrate ball mill set；The rotary furnace is placed in heating furnace
In, and heating ring cavity is formed between the rotary furnace and the heating furnace, by fuel combustion to described in the heating ring cavity
Turn round stove heat；The rotary furnace connection multistage cooling spiral system, the copper particle formed after the revolution stove heat pyrolysis
Pass through the multistage cooling spiral system screw conveying and cooling；The turbine crushing system conveys multistage cooling spiral system
Copper particle out crushes, and removes the carbon black after pyrolysis；The powdered copper concentrate ball mill is by turbine crushing system treated copper particle
Grinding is in industrial copper powder；The rotary furnace is connected with pyrolysis oil gas processing system, described in the pyrolysis oil gas processing system connection
Inside rotary furnace, and the oil gas that pyrolytic process in the rotary furnace generates is recycled.
Further, the pyrolysis oil gas processing system is connected to the heating ring cavity of the heating furnace by pipeline.
Further, the inner wall of the rotary furnace is flat, and is convexly equipped with helical structure on the inner wall of the rotary furnace,
The helical structure spirals arrangement along feedstock direction of the tailing in the rotary furnace.
Further, activity is placed with weight linear meter in the heating furnace, and the weight linear meter is in that sleeping shape is arranged, the weight linear meter
Along the axial arranged of the heating furnace.
Further, the rotary furnace is connected with the charging mechanism that furnace charge is put into the rotary furnace, the charging mechanism
Include star-like blocking valve for placing the feed bin of furnace charge, for blocking outside air to enter and described for furnace charge to be put into
The screw(-type) feeder of rotary furnace, the star-like blocking valve are located at the feed inlet of the screw(-type) feeder.
Further, the production system based on pyrolysis and the industrial copper powder of hydrogen embrittlement principle production further includes being used for natural gas
The flue gas emission discharged with the flue gas generated after pyrolysis combustion gas completely burned.
Further, the flue gas emission includes the fume extractor being connected to the heating furnace, is filled with the smoke evacuation
The air heat exchanger for setting connection, the air-introduced machine being connected to the air heat exchanger, the spray scrubber being connected to the air-introduced machine,
The induced-draft fan being connected to the spray scrubber and the chimney for qualified discharge.
Further, the rotary furnace further includes TT＆C system, and the TT＆C system includes temp autocontrolled list outside rotary furnace
Member, gas outlet temperature detection unit, flue gas exit temperature detection unit, rotary furnace rotating speed variable frequency adjustment unit, star-like lock gas
Valve variable frequency adjustment unit, screw(-type) feeder variable frequency adjustment unit and boiler induced-draft fan variable frequency adjustment unit.
Compared with prior art, the production system provided by the invention based on pyrolysis and the industrial copper powder of hydrogen embrittlement principle production,
Heat occurs for the copper powder gone out by the tailing selection by winnowing being put into rotary furnace by waste printed circuit board, the resin-oatmeal in copper powder
Solution, pyrolysis generate pyrolysis gas, include hydrogen in pyrolysis gas, and hydrogen occurs hydrogen embrittlement with metallic copper under high temperature environment and reacts, and hydrogen is molten
In metallic copper, it is polymerized to hydrogen molecule, causes stress concentration, improves the brittleness of copper, convenient for preparing industrial copper powder, is pyrolyzed oil gas
Processing system, which classifies the pyrolysis gas generated in pyrolytic process, to be recycled, and the coagulable condensed formation pyrolysis oil of pyrolysis gas is collected
Get up, the pyrolysis gas that can not be coagulated is fully burned, and does not generate bioxin, asepsis environment-protecting, the copper powder that pyrolysis hydrogen embrittlement obtains is through more
Grade cooling spiral system is cooled to room temperature step by step, and obtained copper powder is sent to turbine crushing system, activity is completely separated out
Carbon black, sub-elects the copper powder of 20~100 mesh, and high mesh number copper powder carries out anti-oxidant treatment through mixing machine, treated each grade copper
Powder send to powdered copper concentrate ball mill the grinding for carrying out supper fine refined copper powder, the supper fine refined copper powder (1000~1250 of last output high-purity
Mesh), whole process energy conservation and environmental protection, the standard copper powder of preparation is high-quality, grade is high.
Description of the drawings
Fig. 1 is the composition of the production system provided in an embodiment of the present invention based on pyrolysis and the industrial copper powder of hydrogen embrittlement principle production
Schematic diagram；
Fig. 2 is the revolution of the production system provided in an embodiment of the present invention based on pyrolysis and the industrial copper powder of hydrogen embrittlement principle production
The floor map of stove；
Fig. 3 is the source process schematic of copper powder；
Fig. 4 is to utilize the production system system provided in an embodiment of the present invention that industrial copper powder is produced based on pyrolysis and hydrogen embrittlement principle
The process flow diagram of standby industry copper powder；
Fig. 5 is the technological process signal that supper fine refined copper powder is prepared using copper powder provided in an embodiment of the present invention.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
The same or similar label correspond to the same or similar components in the attached drawing of the present embodiment；In description of the invention
In, it is to be understood that if there is the orientation or positional relationship of the instructions such as term "upper", "lower", "left", "right" for based on attached drawing institute
The orientation or positional relationship shown, is merely for convenience of description of the present invention and simplification of the description, and does not indicate or imply the indicated dress
It sets or element must have a particular orientation, with specific azimuth configuration and operation, therefore the use of position relationship described in attached drawing
Language only for illustration, should not be understood as the limitation to this patent, for the ordinary skill in the art, can be with
The concrete meaning of above-mentioned term is understood as the case may be.
The realization of the present invention is described in detail below in conjunction with specific embodiment.
Referring to Fig.1 shown in -5, preferred embodiment is provided for the present invention.
Pyrolysis industrially also known as destructive distillation is to heat organic substance in the absence of air conditions or exist in a small amount of oxygen
Under conditions of partly burn, be allowed to be converted to the basic thermochemical process of useful fuel or industrial chemicals.When temperature reaches 200
At~500 DEG C, the resin matrix in give up PCB or waste enameled wire is cracked into gaseous state, liquid organic compound and carbon, forms H2、CO、
CO2、CH4Equal stabilizing gas, shown in key reaction principle such as equation (1)~(4).
CnHm→xCH4+yH2+zC (1)
CH4+H2O→CO+3H2 (2)
C+H2O→CO+H2C (3)
C+CO2→2CO (4)
In formula, m, n, x, y, z are pro rate coefficient.
So-called hydrogen embrittlement refers to the hydrogen being dissolved in metal, is polymerized to hydrogen molecule, causes stress concentration, is more than the intensity pole of metal
Limit, forms tiny crackle, also known as white point in metal inside.Hydrogen embrittlement is only anti-, uncurable disease.Hydrogen embrittlement is just eliminated not once generation
.
The raw material (furnace charge) of the present embodiment is copper powder, and copper powder is more than the corner that circuit board processing and manufacturing generates in the process
Expect the powder after cracking and sorting, the tailing of circuit board goes out with metal through Mechanical Crushing, separation by shaking table (based on copper and other gold
Belong to) based on, the metal powder supplemented by a small amount of nonmetallic (resin-oatmeal).It is as shown in Fig. 4 that it carrys out source procedure.
Production system provided in this embodiment based on pyrolysis and the industrial copper powder of hydrogen embrittlement principle production, for being pyrolyzed printing electricity
The organic resin of the tailing of road plate and make metallic copper by hydrogen embrittlement, includes the rotary furnace 111, multistage cold in sleeping shape rotation arrangement
But spiral system 120, turbine crushing system 140 and powdered copper concentrate ball mill 150；Rotary furnace 111 is placed in heating furnace 112, and
Heating ring cavity is formed between rotary furnace 111 and heating furnace 112, and rotary furnace 111 is heated by fuel combustion in heating ring cavity；It returns
Converter 111 connects multistage cooling spiral system 120, and the copper particle formed after the heating pyrolysis of rotary furnace 111 passes through multistage cooling spiral
120 helical feed of system and cooling；The copper particle that turbine crushing system 140 transports out multistage cooling spiral system 120 crushes,
And remove the carbon black after pyrolysis；Treated the copper particle grinding of turbine crushing system 140 is in standard copper by powdered copper concentrate ball mill 150
Powder；Rotary furnace 111 is connected with pyrolysis oil gas processing system 130, and pyrolysis oil gas processing system 130 is connected to inside rotary furnace 111,
And the oil gas that pyrolytic process in rotary furnace 111 generates is recycled.
The production system based on pyrolysis and the industrial copper powder of hydrogen embrittlement principle production of above-mentioned offer, by rotary furnace 111
It is put into the copper powder gone out by the tailing selection by winnowing of waste printed circuit board, the resin-oatmeal in copper powder is pyrolyzed, and pyrolysis generates pyrolysis
Gas includes hydrogen in pyrolysis gas, and hydrogen occurs hydrogen embrittlement with metallic copper under high temperature environment and reacts, and hydrogen is dissolved in metallic copper, is caused
Stress concentration improves the brittleness of copper, and convenient for preparing industrial copper powder, pyrolysis oil gas processing system 130 will generate in pyrolytic process
Pyrolysis gas classification recycling, the coagulable condensed formation pyrolysis oil of pyrolysis gas is collected, and the pyrolysis gas that can not be coagulated is complete
Burn entirely, do not generate bioxin, asepsis environment-protecting, the copper powder that pyrolysis hydrogen embrittlement obtains through multistage cooling spiral system 120 step by step into
Row is cooled to room temperature, and obtained copper powder is sent to turbine crushing system 140, activated carbon black is completely separated out, sub-elect 20~
The copper powder of 100 mesh, high mesh number copper powder carry out anti-oxidant treatment through mixing machine, and treated, and each grade copper powder is sent to powdered copper concentrate ball milling
Machine 150 carries out the grinding of supper fine refined copper powder, the supper fine refined copper powder (1000~1250 mesh) of last output high-purity, whole process section
Can environmental protection, the standard copper powder of preparation is high-quality, grade is high.
Production system provided in this embodiment based on pyrolysis and the industrial copper powder of hydrogen embrittlement principle production, has the following advantages：
1) environmentally friendly：The copper powder of the tailing production of the useless PCB of pyrolysis and melting technology processing, is pyrolyzed the oil gas of output
In enclosed system reducing atmosphere, dioxin synthesis and existing condition are avoided, it is clean after being pyrolyzed the condensed isolation of purified of oil gas
The non-condensable gas of net low-carbon is organized to burn in high-temperature region, is effectively prevented the generation and presence of dioxin.It is solid to be pyrolyzed tail gas
The discharges such as body dust, sulfide, halide are discharging standards discharge capacitys 10% hereinafter, bioxin, furan emissions amount are states
1/3 or less family's standard.
2) energy saving：Copper powder is pyrolyzed the oil gas of output, after purified device condensation separation processing, Ordering to other stoves
Volumetric combustion can at least save the heat of heating 50%.
3) resource makes full use of：It is pyrolyzed hydrogen embrittlement technical finesse copper powder, avoids the oxidational losses of metal, ensures metal and work
The good separation of property charcoal.Metal recovery rate is more than 98%.Output copper-rich powder (contains rare precious metal).Liquate make low melting point slicker solder and its
Alloy is recycled with metallic state, will not oxidized diffusion to ambient enviroment, while recycling valuable metals resources.
4) standard copper powder is high-quality, and grade is high, and impurity is few：By being pyrolyzed the copper powder obtained after hydrogen embrittlement with preferable crisp
Property, convenient for grinding sorting, convenient for preparing industrial copper powder, activated carbon black is sub-elected by turbine crushing system 140, finally by copper
Fine powder ball mill 150 carries out supper fine refined copper powder grinding, the last high-precision supper fine refined copper powder of output.
Specifically, rotary furnace 111 further includes the drive mechanism for driving rotary furnace 111 to rotate, for adding into rotary furnace 111
Enter the charging mechanism 113 of furnace charge；Drive mechanism drives rotary furnace 111 constantly to be rotated, and the rotary furnace 111 of rotation is conducive to copper powder
It pushes ahead, and copper powder is not bonded in 111 inner wall of rotary furnace.
112 sections of rotary furnaces 111 of heating furnace select heat-resistance stainless steel 310S materials to make, and use 950 DEG C of temperature safely；Add
112 outer both ends rotary furnace 111 of hot stove selects stainless steel 304 material to make, and uses 750 DEG C of temperature safely.111 specification of rotary furnace
φ 950*16000*12mm, plate thickness 12mm.
Rotary furnace and heating furnace collectively form furnace body, and furnace body further includes feed end sealing mechanism, 111 end of feed end rotary furnace
Screw(-type) feeder 114 is installed, if multiple tracks graphite packing compacting sealing mechanism realizes feed end static and dynamic sealing at face plate center.Into
Expect that end sealing mechanism is made of carbon steel Q235 materials.
Furnace body further includes discharging end shield and discharge end sealing mechanism, and discharging end shield top sets taper gas exit, and installation is hard
Sealed butterfly valve.Cover body lower part sets conical discharge port, 0.8 meter is put down in Equipment Foundations, high-temperature material seals cold into cooling device
But.Cover body end plates set inspection manhole and sealed peephole.For discharging end shield by type steel support on whole steel bottom plate, cover body is thick
Degree fully considers that rotary furnace 111 is influenced by thermal stretching.The end shield liner that discharges is made of stainless steel 304 material, and other is carbon
Steel Q235 materials make.
Static and dynamic sealing takes multiple tracks filler to compress sealing means between discharging end shield and rotary furnace 111, and sealing mechanism includes：
111 rotating ring of rotary furnace, end shield stationary ring, filler compression ring, airtight and watertight padding, fastening bolt, holddown spring etc..Compression ring and stationary ring it
Between, compressed and connect using flange bolt between stationary ring and end shield, multiple-sealed fill out is clogged at sealing surface between rotating ring and stationary ring
Material, passes through compression ring, bolt, compression spring equipressure tightening seal.Rotating ring, stationary ring take precision machinery to process, and ensure assembly precision.Sealing
Filler selects high-quality graphite packing, and heatproof height, self-lubricating, wear-resisting, elasticity is good, is conducive to the influence for eliminating rotating ring bounce.Sealing
In mechanism in addition to airtight and watertight padding, processed using carbon steel Q235 materials.
Set gas-fired heater 112 between two grades of support rolling rings before and after the rotary furnace 111, by external heating rotary stove 111 outside
Wall.112 thorax inside dimension of heating furnace：10.50*1.25*1.67 rice, burner is set to 111 lower part of rotary furnace, because rotary furnace 111 exists
Rotation, is fully able to ensure that material is heated evenly.Along 112 thorax length direction of heating furnace install 7 groups of fuel burner nozzles, 2/group, 1.5
Rice/group, totally 14, single-sided arrangement.
112 burner hearth of heating furnace uses refractory fibre liner, and storage heat dissipation capacity is few, and furnace body external skin temperatures are less than 50 DEG C.Outside furnace body
Shell is section steel plate structure, and semicircle furnace roof, detachably, 112 body of heating furnace are mounted on overall steel together with transmission and supporting mechanism
On chassis, can integrally-regulated inclination angle, it is aesthetic in appearance.
The raw coke oven gas for going out furnace body introduces recovery system, and coal gas, calorific value are recycled after dedusting, tar removing, wind turbine pressurization
About 4000Kcal/m3 is used as fuel before sending to heating furnace 112.Based on 111 inlet amount 3000kg/h of rotary furnace, reach normal guarantor
When temperature state, it is pyrolyzed generated gas recovery amount about 420m3/h, disclosure satisfy that wanting for thermic load needed for heating furnace 112 substantially
It asks.112 cold body startup stage of heating furnace, using liquefied natural gas as starting fluid, calorific value 8500Kcal/m3.Select double combustions
Expect burner, both can single fire or multifuel combustion, every burner combustion ability is 150,000 Kcal/h, has electronic ignition/fire defector work(
Energy.With the increase of gas recovery amount, gas discharge is gradually reduced, until natural gas is deactivated, only with recycling dry gas.
Combustion air is supplied by 1 centrifugal high pressure fan, model 9-26-4.5A, 116 power 7.5Kw of motor.Stokehold natural gas
Intake header installs main valve, pressure reducing valve, solenoid valve, pressure gauge, and stokehold gas recovery intake header installs main valve, pressure gauge, burns
Combustion gas and combustion air branch pipe install manual modulation valve respectively before mouth.Combustion gas and combustion-supporting air pipe line single-sided arrangement before burner, to adapt to
The installation requirement of burner.For gas header pipe operating pressure generally in 3-6Kpa, combustion air manifold pressure is more than 3Kpa.
111 inner wall of rotary furnace does not set material rotating plate as light wall-shaped formula, installs screw mechanism.Rotary furnace 111 processing in strict accordance with
Design standard executes, and ensures concentricity.In order to enhance weld strength, the ring-like weld of cylinder body outer wall welds external reinforcement muscle.Due to
Overall steel chassis structure is taken, 111 inclination angle of rotary furnace can be with integrated regulation.
After material is added by feed end, moved to discharge end with the rotation of rotary furnace 111, through heating, constant temperature, cooling,
Until discharging.Residence time of material is adjusted by 111 rotating speed of rotary furnace.
Pyrolysis oil gas processing system 130 is connected to the heating ring cavity of heating furnace 112 by pipeline；Pyrolysis oil gas processing system
130, which classify the pyrolysis gas generated in pyrolytic process, recycles, and the coagulable condensed formation pyrolysis oil of pyrolysis gas is collected,
The pyrolysis gas that can not be coagulated is back to the heating ring cavity of heating furnace 112, is fully burned, and does not generate bioxin, asepsis environment-protecting.
In the present embodiment, the inner wall of rotary furnace 111 is flat, and is convexly equipped with helical structure on the inner wall of rotary furnace 111,
Helical structure spirals arrangement along feedstock direction of the tailing in rotary furnace 111；In this way, furnace charge will not be bonded in rotary furnace
111 inner walls, screw mechanism make furnace charge at the uniform velocity steadily be moved to discharge end from feed end, and furnace charge pyrolysis is abundant.
Specifically, activity is placed with weight linear meter in heating furnace 112, and weight linear meter is in that sleeping shape arranges that weight linear meter is along heating furnace
112 it is axial arranged；Traditional mode is setting material rotating plate, raises furnace charge by material rotating plate, but the pack completeness of furnace charge is relatively low, empty
Gas is easily accessible, and can not ensure sufficient reducing environment, is unfavorable for the progress of pyrolysis, while furnace charge is easily bonded in rotary furnace 111
Inner wall, weight linear meter are freely placed at 111 inner wall of rotary furnace, play the role of loosening furnace charge, furnace charge is not easy to bond, and is also beneficial to stove
Expect the movement from feed end to discharge end.
Specifically, drive mechanism includes the transmission bull gear for the outer wall for being formed in rotary furnace 111, is engaged with transmission bull gear
Pinion gear and driving pinion rotation motor；Rotary furnace 111 is supported on by front and back two grades of rolling rings in two groups of support roller groups, is leaned on
111 outer wall of rotary furnace inlays transmission bull gear at nearly feed end rolling ring, is driven by motor and pinion gear, power of motor 7.5kw,
Frequency control, speed adjustable range 0.5-3r/min commonly use 1.6r/min.Rolling ring, gear ring, gear, support roller etc. use ZG310-570
Cast steel material is processed, and is assembled with rotary furnace 111 and is executed in strict accordance with design standard.
The above transmission and supporting mechanism are mounted on together with heating furnace 112 etc. on whole steel bottom plate together, can be with integrated regulation
111 inclination angle of rotary furnace.Two sets of screw-nut support adjustment mechanisms are installed at whole steel bottom plate below front and back two groups of support roller groups, are borrowed
It is 0-3 ° to help 111 inclination angle of hydraulic jack adjustment rotary furnace, adjustable extent, and mounted angle is 1.5 °.
In the present embodiment, rotary furnace 111 is connected with the charging mechanism 113 that furnace charge is put into rotary furnace 111, charging mechanism
113 include for placing the feed bin of furnace charge, for block outside air enter star-like blocking valve and for furnace charge to be put into
The screw(-type) feeder 114 of rotary furnace 111, star-like blocking valve are located at the feed inlet of screw(-type) feeder 114.
Star-like 114 feed way of blocking valve+screw(-type) feeder, blocking valve is taken to be mounted on above feed machine inlet, energy
Enough it is effectively blocked coal gas effusion or outside air intrusion in rotary furnace 111.Batcher helix tube stretches into certain in rotary furnace 111
Distance avoids returning charge.116 power 1.5kw of blocking valve motor, frequency control.116 power 3kw of batcher motor, frequency control.
Screw(-type) feeder 114 is mounted on whole steel bottom plate, can be with 111 integrated regulation inclination angle of rotary furnace.114 liner of screw(-type) feeder
It is made of stainless steel 304 material, it is other to be made for Q235 carbon steel materials.Feeding device, feed bin are by user according to technology arrangement
It is equipped with.
During 114 use of screw(-type) feeder, material will not be completely filled in helix tube under normal circumstances, is had certain
Filling rate, it is contemplated that realize that material envelope is unrealistic in helix tube.It is recommended that installing star-like lock gas above 114 feed inlet of screw(-type) feeder
Valve can be effectively blocked coal gas effusion or outside air intrusion in rotary furnace 111.
In the present embodiment, the production system based on pyrolysis and the industrial copper powder of hydrogen embrittlement principle production further include for natural gas and
The flue gas emission 160 that the flue gas generated after pyrolysis combustion gas completely burned is discharged.
Specifically, flue gas emission 160 includes the fume extractor 161 being connected to heating furnace 112 and fume extractor 161
The air heat exchanger 162 of connection, the air-introduced machine being connected to air heat exchanger 162, the spray scrubber being connected to air-introduced machine and spray
Drench the induced-draft fan of scrubbing tower connection and the chimney for qualified discharge.
After natural gas and pyrolysis combustion gas completely burned, the flue gas of generation drains into air heat exchanger 162 from fume extractor 161,
Inversely spraying scrubbing tower is drained into through air-introduced machine, until adsorption tower neutralization, demisting, absorption, through induced-draft fan, through chimney qualified discharge.
In the present embodiment, furnace body further includes TT＆C system, and TT＆C system includes temp autocontrolled unit, coal outside rotary furnace 111
Gas outlet temperature detection unit, flue gas exit temperature detection unit, 111 rotating speed variable frequency adjustment unit of rotary furnace, star-like blocking valve
Variable frequency adjustment unit, 114 variable frequency adjustment unit of screw(-type) feeder and boiler induced-draft fan variable frequency adjustment unit.
(1) temp autocontrolled unit outside rotary furnace 111
111 externally heated oven of rotary furnace, 112 temperature takes temperature automatically controlled, totally 7th area, i.e. 7 groups of temperature control loops.Every group of temperature control loop
It is made of thermocouple, PID intelligence instruments, motor valve and low-voltage electrical.System can realize the outer temperature of 7 rotary furnaces 111
Degree automatically controls, and furnace temperature can arbitrarily be set below safe temperature, and temperature-controlled precision is less than ± 10 DEG C.By effectively controlling
111 external temperature of rotary furnace is fully able to meet the control requirement of temperature of charge in rotary furnace 111.
(2) gas outlet temperature detection unit
1 bimetallic thermometer is installed at the gas exit of discharging end shield top, for detecting gas outlet temperature, scene
Display.
(3) flue gas exit temperature detection unit
1 bimetallic thermometer is installed pushing up 161 exit of fume extractor close to feed end heating furnace 112, for detecting
Flue gas exit temperature, scene display.
(4) 111 rotating speed variable frequency adjustment unit of rotary furnace
The adjusting of 111 rotating speed of rotary furnace is realized by 116 frequency control of driving decelerating electric machine.Frequency converter operating surface
Plate, which is drawn, to be mounted on control cabinet panel, is conveniently operated.
(5) star-like blocking valve variable frequency adjustment unit
Star-like blocking valve takes 116 frequency control of motor, discharging speed to match with 114 charging rate of screw(-type) feeder.
Frequency-changer operation panel, which is drawn, to be mounted on control cabinet panel, is conveniently operated.
(6) 114 variable frequency adjustment unit of screw(-type) feeder
Screw(-type) feeder 114 takes 116 frequency control of motor, charging rate to match with star-like blocking valve discharging speed.
Frequency-changer operation panel, which is drawn, to be mounted on control cabinet panel, is conveniently operated.The determination of charging rate should be led in the trial production stage
It crosses and gropes to be stepped up, it is unsuitable too fast.
(7) air-introduced machine variable frequency adjustment unit
112 smoke exhaust fan of heating furnace uses boiler induced-draft fan frequency control, to be advisable in tiny structure in 112 thorax of heating furnace.
Frequency-changer operation panel, which is drawn, to be mounted on control cabinet panel, is conveniently operated.
(8) switch board
Instrument, frequency converter, low-voltage electrical of the above TT＆C system etc. are mounted in 1 switch board, and switch board is by furnace body
Side is arranged nearby.Equipment to electric wire between switch board walks crane span structure, and compensation lead of thermocouple uses metallic shield conducting wire.
For the sake of the operational safety of furnace body, following safety measure is taken：
A) PID intelligence instruments have overtemperature alarm function, once 111 externally heated oven of rotary furnace, 112 bore temperature is beyond setting
Maximum safety temperature, instrument will the automatic burning capacity for reducing burner, until stopping fuel supply, to ensure rotary furnace 111
Safety, be simultaneously emitted by alarm signal.
B) driving motor 116 has hand wheel with rear output shaft, when encountering the accidents such as power failure suddenly, can realize
Rapid assembly handwheel, makes rotary furnace 111 keep slowly operating, avoids high temperature deformation.
C) in order to ensure gas safe, natural gas intake header installs safety cut-off solenoid valve before heating furnace 112, once it is prominent
So have a power failure, solenoid valve will turn off gas header pipe supply.
D) 1 set of electronic ignition/fire defector controller and gas electromagnetic valve are installed before every burner, once certain burner hair
Automatic ignition, loss of ignition will be automatically shut down the gas supply of this burner, and send out alarm by raw flame-out phenomenon, controller
Signal.
E) operated according to equipment regulation, ensure equipment in the process of running not overtemperature, not oil starvation, do not leak.
The technological process that copper powder is handled using the production system for producing industrial copper powder based on pyrolysis and hydrogen embrittlement principle is as follows：
Copper powder is sent through feeding spiral to furnace body, is heated by 111 outer wall of rotary furnace to furnace body, make furnace charge from
Kiln hood to kiln tail residence time at 1 hour or more, ensure that furnace charge is pyrolyzed completely, hydrogen embrittlement occurs for copper in furnace charge.After pyrolysis
Furnace charge is cooled to room temperature step by step through the cooling spiral that discharges.Through crusher in crushing, cyclone dust collection, bag collection detaches copper
Powder and activated carbon black.Broken copper powder is sent to turbine crushing system 140, is completely separated out activated carbon black, sub-elects 20~100
Purpose copper powder.Most of bottom mesh number copper powder suppresses copper cake, the high mesh number copper powder economic cooperation of fraction through copper powder cuber briquetting, output
The machine of criticizing carries out anti-oxidant treatment, and treated, and each grade copper powder send to ball-grinding machine the grinding for carrying out supper fine refined copper powder, finally produces
Go out the supper fine refined copper powder (1000~1250 mesh) of high-purity.
Among these, it is pyrolyzed output oil gas, through pyrolysis oil gas processing system 130, classification oil recovery and gas, clean oil gas are connected to
111 outer wall burner hearth oil gas burner of rotary furnace carries out completely burned.
After natural gas and pyrolysis combustion gas completely burned, the flue gas of generation drains into air heat exchanger 162 from kiln hood smoke collection pipe,
Inversely spraying scrubbing tower is drained into through air-introduced machine, until adsorption tower neutralization, demisting, absorption, through induced-draft fan, through chimney qualified discharge.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement etc., should all be included in the protection scope of the present invention made by within refreshing and principle.
Claims (8)
1. the production system based on pyrolysis and the industrial copper powder of hydrogen embrittlement principle production, which is characterized in that for being pyrolyzed printed circuit board
Tailing in organic resin, while make copper occur hydrogen embrittlement to prepare copper powder, include in sleeping shape rotation arrangement rotary furnace,
Multistage cooling spiral system, turbine crushing system and powdered copper concentrate ball mill；The rotary furnace is placed in heating furnace, and described time
It is formed between converter and the heating furnace and heats ring cavity, by fuel combustion to the revolution stove heat in the heating ring cavity；
The rotary furnace connection multistage cooling spiral system, the copper particle formed after the revolution stove heat pyrolysis pass through the multistage
Cooling spiral system screw conveys and cooling；The copper particle powder that the turbine crushing system transports out multistage cooling spiral system
It is broken, and remove the carbon black after pyrolysis；Treated the copper particle grinding of turbine crushing system is in standard copper by the powdered copper concentrate ball mill
Powder；The rotary furnace is connected with pyrolysis oil gas processing system, and the pyrolysis oil gas processing system is connected to inside the rotary furnace, and
The oil gas that pyrolytic process in the rotary furnace generates is recycled.
2. the production system based on pyrolysis and the industrial copper powder of hydrogen embrittlement principle production as described in claim 1, which is characterized in that institute
State the heating ring cavity that pyrolysis oil gas processing system is connected to the heating furnace by pipeline.
3. the production system based on pyrolysis and the industrial copper powder of hydrogen embrittlement principle production as claimed in claim 2, which is characterized in that institute
The inner wall for stating rotary furnace is flat, and helical structure is convexly equipped on the inner wall of the rotary furnace, and the helical structure is along side
Feedstock direction of the angle clout in the rotary furnace spirals arrangement.
4. the production system based on pyrolysis and the industrial copper powder of hydrogen embrittlement principle production as claimed in claim 3, which is characterized in that institute
State activity in heating furnace and be placed with weight linear meter, the weight linear meter is in that sleeping shape is arranged, the weight linear meter along the heating furnace axis
To arrangement.
5. the production system based on pyrolysis and the industrial copper powder of hydrogen embrittlement principle production as claimed in claim 4, which is characterized in that institute
It states rotary furnace and is connected with the charging mechanism that furnace charge is put into the rotary furnace, the charging mechanism includes the material for placing furnace charge
Storehouse, the star-like blocking valve for blocking outside air to enter and the screw(-type) feeder for furnace charge to be put into the rotary furnace,
The star-like blocking valve is located at the feed inlet of the screw(-type) feeder.
6. the production system based on pyrolysis and the industrial copper powder of hydrogen embrittlement principle production as claimed in claim 5, which is characterized in that institute
It further includes for natural gas and pyrolysis combustion gas completely burned to state the production system based on pyrolysis and the industrial copper powder of hydrogen embrittlement principle production
The flue gas emission that the flue gas generated afterwards is discharged.
7. the production system based on pyrolysis and the industrial copper powder of hydrogen embrittlement principle production as claimed in claim 6, which is characterized in that institute
State flue gas emission include the fume extractor being connected to the heating furnace, the air heat exchanger being connected to the fume extractor,
The air-introduced machine that is connected to the air heat exchanger, the spray scrubber being connected to the air-introduced machine connect with the spray scrubber
Logical induced-draft fan and the chimney for qualified discharge.
8. the production system based on pyrolysis and the industrial copper powder of hydrogen embrittlement principle production as described in claim 1-7 any one,
Be characterized in that, the rotary furnace further includes TT＆C system, the TT＆C system include outside rotary furnace temp autocontrolled unit, coal gas go out
Mouth temperature detecting unit, flue gas exit temperature detection unit, rotary furnace rotating speed variable frequency adjustment unit, star-like blocking valve variable frequency adjustment
Unit, screw(-type) feeder variable frequency adjustment unit and boiler induced-draft fan variable frequency adjustment unit.
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|---|---|---|---|
| CN201810488840.5A CN108517412A (en) | 2018-05-21 | 2018-05-21 | Production system based on pyrolysis and the industrial copper powder of hydrogen embrittlement principle production |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810488840.5A CN108517412A (en) | 2018-05-21 | 2018-05-21 | Production system based on pyrolysis and the industrial copper powder of hydrogen embrittlement principle production |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114127234A (en) * | 2019-04-30 | 2022-03-01 | 韩国能源技术研究院 | Pyrolysis oil production system of discarded object |
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| CN104096842A (en) * | 2014-07-16 | 2014-10-15 | 阙龙翔 | High-purity copper powder production process utilizing waste copper enameled wires |
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Application publication date: 20180911 |