CN103831287A - Method for treating circuit board - Google Patents
Method for treating circuit board Download PDFInfo
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- CN103831287A CN103831287A CN201410092213.1A CN201410092213A CN103831287A CN 103831287 A CN103831287 A CN 103831287A CN 201410092213 A CN201410092213 A CN 201410092213A CN 103831287 A CN103831287 A CN 103831287A
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- 238000000034 method Methods 0.000 title claims abstract description 102
- 238000000197 pyrolysis Methods 0.000 claims abstract description 114
- 239000007789 gas Substances 0.000 claims abstract description 87
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 41
- 239000011701 zinc Substances 0.000 claims abstract description 41
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 41
- 238000001816 cooling Methods 0.000 claims abstract description 29
- 239000003517 fume Substances 0.000 claims abstract description 21
- 229910052751 metal Inorganic materials 0.000 claims abstract description 19
- 239000002184 metal Substances 0.000 claims abstract description 19
- 239000003365 glass fiber Substances 0.000 claims abstract description 14
- 239000000446 fuel Substances 0.000 claims abstract description 11
- 239000000203 mixture Substances 0.000 claims abstract description 10
- 238000002485 combustion reaction Methods 0.000 claims abstract description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052802 copper Inorganic materials 0.000 claims abstract description 7
- 239000010949 copper Substances 0.000 claims abstract description 7
- 238000012545 processing Methods 0.000 claims description 76
- 230000008569 process Effects 0.000 claims description 61
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 6
- 239000008247 solid mixture Substances 0.000 claims description 6
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 3
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 3
- 239000000292 calcium oxide Substances 0.000 claims description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 3
- 238000013467 fragmentation Methods 0.000 claims description 3
- 238000006062 fragmentation reaction Methods 0.000 claims description 3
- 238000004064 recycling Methods 0.000 abstract description 4
- 238000000926 separation method Methods 0.000 abstract description 4
- 150000002739 metals Chemical class 0.000 abstract description 3
- 238000006243 chemical reaction Methods 0.000 description 37
- 239000003921 oil Substances 0.000 description 35
- 239000000463 material Substances 0.000 description 20
- 239000002994 raw material Substances 0.000 description 20
- 238000011084 recovery Methods 0.000 description 11
- 238000005979 thermal decomposition reaction Methods 0.000 description 9
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 7
- 239000000126 substance Substances 0.000 description 7
- 239000002699 waste material Substances 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- 239000003546 flue gas Substances 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- 235000019580 granularity Nutrition 0.000 description 5
- 230000002378 acidificating effect Effects 0.000 description 4
- 230000002939 deleterious effect Effects 0.000 description 4
- 239000004744 fabric Substances 0.000 description 4
- 239000000295 fuel oil Substances 0.000 description 4
- 229910052736 halogen Inorganic materials 0.000 description 4
- 150000002367 halogens Chemical class 0.000 description 4
- 230000005855 radiation Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000009835 boiling Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
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- 238000010438 heat treatment Methods 0.000 description 3
- 229920002521 macromolecule Polymers 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 239000000567 combustion gas Substances 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052755 nonmetal Inorganic materials 0.000 description 2
- 150000002902 organometallic compounds Chemical class 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 241001124569 Lycaenidae Species 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 235000014987 copper Nutrition 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
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- 229910052739 hydrogen Inorganic materials 0.000 description 1
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- 230000000704 physical effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 210000000952 spleen Anatomy 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000007158 vacuum pyrolysis Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/82—Recycling of waste of electrical or electronic equipment [WEEE]
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- Manufacture And Refinement Of Metals (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a method for treating a circuit board. The method comprises the following steps: (1) performing crushing treatment on the circuit board; (2) performing pyrolysis treatment on the circuit board subjected to the crushing treatment in a radiant tube revolving bed, so that high-temperature oil gas, zinc fume and residues are respectively obtained, wherein the residues contain metals and inorganic glass fibers, the radiant tube revolving bed is provided with a combustor, and the combustor supplies heat to the radiant tube revolving bed through combustion fuel; (3) performing first separation treatment on the high-temperature oil gas so as to obtain pyrolytic tar and pyrolysis gas respectively, and supplying the pyrolysis gas to the combustor of the radiant tube revolving bed for serving as fuel; (4) performing first cooling treatment on the zinc fume so as to obtain metal zinc; and (5) performing second separation treatment on the residues so as to obtain a copper-containing metal mixture and the inorganic glass fibers respectively. According to the method for treating the circuit board in the embodiment of the invention, the resource recycling and maximum utilization of energy in the circuit board can be realized.
Description
Technical field
The invention belongs to chemical field, particularly, the present invention relates to a kind of method of process circuit plate.
Background technology
Along with scientific and technological high speed development, electronic product becomes the requisite daily necessities of people, is accompanied by the continuous quickening of electronic product update speed, and the leftover pieces that form in waste electronic refuse and electronic product machining process also grow with each passing day.Account for respectively 1%, 2～5% and 4% of municipal refuse in developed country as Japan, the U.S., European Union's electronic waste annual production, and with the speed increment of every 5 years 16%～28%, be the 3-5 of municipal refuse growth rate doubly.This situation is particularly serious in China, and China is not only populous, the main place that while or developed country dump electronic waste, and data shows that the electronic waste of the U.S. 80% exports to Asia, wherein 90% enters China.As the important component part of electronic product, also increasing year by year of the generation of waste printed circuit board.Waste printed circuit board is the mixture of glass fiber reinforced plastics and various metals, containing 40% the metal of having an appointment, 30% macromolecular organic compound and 30% inorganic glass fiber, conduct oneself well and put if improper, not only can cause a large amount of losses of resource, and can produce serious harm to environment.
At present, mainly comprise mechanical separation method, hydrometallurgical technology, biological metallurgy technology and pyrolytic technique about the technology of useless circuit board recycling both at home and abroad, these technology major part except pyrolysis all only pays close attention to the metal in recovery waste printed circuit board but not landfill or burning of metallorganic not only caused the waste of resource but also environmental pollution serious.Pyrolytic technique, by pyrolytic, can effectively be utilized the macromolecule organic material in waste printed circuit board, is decomposed into fuel oil, combustion gas and carbide, also easily pyrolysis afterproduct is separated the metal in recovery train plate and glass fibre simultaneously.But at present pyrolytic technique is mostly also in the laboratory research stage, is difficult to realize industrialization and large-scale production, simultaneously to the recovery of follow-up metal also many reclaim metallic coppers, and ignored the recovery of other metals.
Therefore, the method for existing processing old circuit board needs further to be studied.
Summary of the invention
The present invention is intended to one of solve the problems of the technologies described above at least to a certain extent.For this reason, one object of the present invention is to propose a kind of method of process circuit plate, and the method can realize the recycling resource of wiring board and the maximum using of the energy.
In one aspect of the invention, the present invention proposes a kind of method of process circuit plate, the method comprises:
(1) wiring board is carried out to break process;
(2) wiring board of process break process step (1) being obtained carries out pyrolysis processing in radiant tube revolving bed, to obtain respectively high-temperature oil gas, zinc fume and residue, wherein, described residue contains metal and inorganic glass fiber, described radiant tube revolving bed has burner, and described burner is the heat supply of described radiant tube revolving bed by combustion fuel;
(3) described high-temperature oil gas step (2) being obtained is carried out the first separating treatment, to obtain respectively pyrolysis oil and pyrolysis gas, and the burner that described pyrolysis gas is supplied to described radiant tube revolving bed is as fuel;
(4) described zinc fume step (2) being obtained carries out the first cooling processing, to obtain metallic zinc; And
(5) step (2) the described residue that obtains is carried out to the second separating treatment, to obtain respectively copper-containing metal mixture and inorganic glass fiber.
Carry out pyrolysis processing according to the method for the process circuit plate of the embodiment of the present invention by employing radiant tube revolving bed, can realize the continuous processing of old circuit board, and adopt radiant tube radiant heat transfer, the pyrolysis gas producing is separated completely with flue gas, and pyrolysis gas is used for the fuel of pyrolysis processing process, thereby can significantly reduce processing cost, simultaneously in pyrolysis processing process, both can obtain macromolecule organic, can realize again the recovery of metallic zinc, thereby realize the maximum using of old circuit board recycling resource and the energy.
In addition, the method for process circuit plate according to the above embodiment of the present invention can also have following additional technical characterictic:
In some embodiments of the invention, in step (1), it is 5～20 millimeters that wiring board is carried out to break process to granularity.Thus, can significantly improve the pyrolysis efficiency in old circuit board subsequent process.
In some embodiments of the invention, described pyrolysis processing further comprises: wiring board is carried out in radiant tube revolving bed to the first pyrolysis processing, to obtain respectively described high-temperature oil gas and solid mixture; And described solid mixture is carried out to the second pyrolysis processing, to obtain respectively described zinc fume and residue.Thus, when can realizing recovery macromolecule organic, reclaim again metallic zinc.
In some embodiments of the invention, described the first pyrolysis processing is at the temperature of 600～850 degrees Celsius, to carry out 0.5～2 hour.Thus, can significantly improve the first pyrolysis efficiency, so that later separation obtains the metallic zinc that purity is higher.
In some embodiments of the invention, described the second pyrolysis processing is at the temperature of 900～950 degrees Celsius, to carry out 0.5～2 hour.Thus, can significantly improve the rate of recovery of metallic zinc.
In some embodiments of the invention, in step (3), described the first separating treatment further comprises: described high-temperature oil gas is carried out to the second cooling processing; And adopt alkaline matter to carry out purified treatment to pyrolysis gas.Thus, can separate and obtain the pyrolysis oil of high-quality and pure pyrolysis gas.
In some embodiments of the invention, described the second cooling processing is to carry out at not higher than the temperature of 78 degrees Celsius.Thus, can significantly improve the separative efficiency of pyrolysis oil and pyrolysis gas.
In some embodiments of the invention, described alkaline matter is selected from least one in NaOH, calcium oxide and calcium carbonate.Thus, can effectively remove the halogen-containing deleterious acidic gas that waits in pyrolysis gas, to can obtain pure pyrolysis gas.
In some embodiments of the invention, in step (4), described the first cooling processing is to carry out at the temperature of 300～380 degrees Celsius.Thus, can further improve the rate of recovery of metallic zinc.
In some embodiments of the invention, in step (5), described the second separating treatment further comprises: described residue is carried out to fragmentation and separate with selection by winnowing.Thus, can realize copper-containing metal mixture separates with the effective of inorganic glass fiber.
Additional aspect of the present invention and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage accompanying drawing below combination is understood becoming the description of embodiment obviously and easily, wherein:
Fig. 1 is the method flow schematic diagram of process circuit plate according to an embodiment of the invention;
Fig. 2 is the method flow schematic diagram of the process circuit plate of another embodiment according to the present invention;
Fig. 3 is the method flow schematic diagram of the process circuit plate of another embodiment according to the present invention.
The specific embodiment
Describe embodiments of the invention below in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Be exemplary below by the embodiment being described with reference to the drawings, be intended to for explaining the present invention, and can not be interpreted as limitation of the present invention.
In description of the invention, it will be appreciated that, term " first ", " second " be only for describing object, and can not be interpreted as indication or hint relative importance or the implicit quantity that indicates indicated technical characterictic.Thus, one or more these features can be expressed or impliedly be comprised to the feature that is limited with " first ", " second ".In description of the invention, the implication of " multiple " is two or more, unless otherwise expressly limited specifically.
In one aspect of the invention, the present invention proposes a kind of method of process circuit plate.Method below with reference to the process circuit plate of Fig. 1-3 pair embodiment of the present invention is described in detail.According to embodiments of the invention, the method comprises:
S100: break process
According to embodiments of the invention, wiring board is carried out to break process, thereby can obtain the wiring board particle through break process.According to embodiments of the invention, before wiring board is carried out to break process, first waste printed circuit board is dismantled to processing, remove electric capacity wherein, the electronic devices and components such as diode.According to embodiments of the invention, old circuit board can contain metal, glass fibre, resin and plastic etc.According to embodiments of the invention, wiring board is carried out the method for break process and is not particularly limited, according to a particular embodiment of the invention, can adopt disintegrating machine to carry out break process to wiring board.According to embodiments of the invention, the granularity of the wiring board particle obtaining is also not particularly limited, and according to a particular embodiment of the invention, the granularity of wiring board particle can be 5～20 millimeters.Inventor finds, on the wiring board particle of this granularity can be laid at the bottom of the follow-up rotary hearth furnace that carries out pyrolysis processing uniformly, thereby can significantly improve the pyrolysis efficiency of subsequent process.
S200: pyrolysis processing
According to embodiments of the invention, the wiring board of above-mentioned obtained process break process is carried out to pyrolysis processing, thereby can obtain respectively high-temperature oil gas, zinc fume and residue, according to a particular embodiment of the invention, in residue, can comprise metal and inorganic glass fiber.According to embodiments of the invention, by before carrying out pyrolysis processing through the wiring board of break process, first by the wiring board through break process by Belt Conveying to batcher, be 100～500 millimeters by the thickness of feed layer of drapery panel control raw material.Inventor finds, the bed of material of this thickness range can thermally equivalent, and can significantly improve pyrolysis efficiency.
Below with reference to Fig. 2, the pyrolysis processing process of the embodiment of the present invention is described in detail, according to embodiments of the invention, pyrolysis processing process can comprise:
S210: the first pyrolysis processing
According to embodiments of the invention, the wiring board through break process is carried out to the first pyrolysis processing, thereby can obtain high-temperature oil gas and solid mixture.According to embodiments of the invention, the condition of the first pyrolysis processing is also not particularly limited, and according to a particular embodiment of the invention, the first pyrolysis processing can be carried out 0.5～2 hour at the temperature of 600～850 degrees Celsius.Inventor's discovery, first pyrolysis processing of carrying out under this condition can significantly be better than other condition and improve the first pyrolysis efficiency.
S220: the second pyrolysis processing
According to embodiments of the invention, above-mentioned obtained solid mixture is carried out to the second pyrolysis processing, thereby can obtain zinc fume and residue.According to embodiments of the invention, the condition of the second pyrolysis processing is also not particularly limited, and according to a particular embodiment of the invention, the second pyrolysis processing can be carried out 0.5～2 hour at the temperature of 900～950 degrees Celsius.Inventor's discovery, second pyrolysis processing of carrying out under this condition can significantly be better than other condition and improve the second pyrolysis efficiency.
It should be noted that, the first pyrolysis processing and the second pyrolysis processing are all carried out in radiant tube revolving bed.According to embodiments of the invention, radiant tube revolving bed has the burner being arranged in radiant tube, and this burner is revolving bed heat supply by fuel being carried out to the pre-heat treatment after-combustion fuel.Particularly, the burner in radiant tube can be also heat-storage type burner, thereby reaches energy-conservation effect.According to embodiments of the invention, carrying out in pyrolysis processing process, this revolving bed adopts radiant tube radiation heating, and its furnace roof and furnace wall maintain static, and furnace bottom drives material rotation, thereby wiring board is carried out to pyrolysis processing.
Concrete, by flashboard, revolving bed being divided into reaction one district and reaction 2nd district, reaction one district carries out the first pyrolysis processing, and reaction 2nd district carry out the second pyrolysis processing.First at the bottom of revolving burner, by material distributing machine, reaction one district is paved with to material, controlling reaction is under 600～850 degrees Celsius, to carry out 0.5～2 hour in temperature, and by being arranged at the multiple oil and gas pipes of furnace roof, produced oil gas is collected; Then open flashboard, started to the degree that just can make material pass through, at the bottom of revolving burner and cloth, until reaction one district and the reaction two uniform fulls with substance in district are closed flashboard, the temperature of controlling reaction 2nd district is 900～950 degrees Celsius and carries out 0.5～2 hour.Now, react a district and react two districts reactions and carry out simultaneously, because the boiling point of zinc is 907 degrees Celsius, therefore in reaction 2nd district, can generate zinc fume, partial thermal decomposition residual gas and residue, zinc fume and partial thermal decomposition residual gas are collected by the discharge being arranged in 2nd district; Finally open flashboard to the degree that just can make material pass through, at the bottom of revolving burner, by residue, by sealing screw discharging, simultaneous reactions one district continues charging and starts the reaction of second round.
Inventor finds, adopt radiant tube revolving bed to carry out pyrolysis processing to old circuit board, compared with adopting vacuum pyrolysis stove in the past, can significantly reduce the requirement to equipment and process, and can realize the continuous processing of material, thereby make it be easy to scale and industrialization, the thermal efficiency of this revolving bed burner can reach more than 85% simultaneously, and can the low-calorie combustion gas of smooth combustion, thereby can significantly reduce the input of energy cost, adopt in addition flashboard that revolving bed is divided into reaction one district and reaction 2nd district, reaction temperature by accurate control zones of different and reaction time can in same device, realize old circuit board in the pyrolysis resource of non-metal organic compound and the recovery of metallic zinc.
S300: the first separating treatment
According to embodiments of the invention, the high-temperature oil gas of collecting in above-mentioned steps is carried out to the first separating treatment, thereby can obtain respectively pyrolysis oil and pyrolysis gas.Below with reference to Fig. 3, the first separating treatment step is described in detail, according to embodiments of the invention, the first separating treatment comprises:
S310: the second cooling processing
According to embodiments of the invention, the high-temperature oil gas of collection is carried out to the second cooling processing, thereby the liquid pyrolysis oil in gas mixture can be separated with the pyrolysis gas of gaseous state, wherein, pyrolysis oil can be used as fuel oil or chemical products and sells.According to embodiments of the invention, high-temperature oil gas is carried out the condition of the second cooling processing and is not particularly limited, according to a particular embodiment of the invention, the second cooling processing can be carried out at the temperature that is no more than 78 degrees Celsius.According to embodiments of the invention, the mode of the second cooling processing is also not particularly limited, according to a particular embodiment of the invention, can adopt the mode of direct-cooled and a cold combination to carry out cooling processing to high-temperature oil gas, wherein, direct-cooled cooling medium is recycle oil aqueous mixtures, and a cold cooling medium is recirculated water.Inventor's discovery, the cooling processing of carrying out under this condition can obviously be better than other temperature and improve the cooling effectiveness of high-temperature oil gas, thereby can significantly improve the separative efficiency of pyrolysis oil and pyrolysis gas.
S320: purified treatment
According to embodiments of the invention, contain the deleterious acidic gases such as halogen through in the pyrolysis gas of cooling processing, therefore this pyrolysis gas is carried out to purified treatment, to can obtain pure pyrolysis gas.According to embodiments of the invention, the concrete grammar of purified treatment is also not particularly limited, and according to a particular embodiment of the invention, can adopt alkaline matter to carry out purified treatment to pyrolysis gas.According to embodiments of the invention, the particular type of the alkaline matter of employing is also not particularly limited, and according to a particular embodiment of the invention, alkaline matter can be for being selected from least one in NaOH, calcium oxide and calcium carbonate.According to embodiments of the invention, the pure pyrolysis gas obtaining is collected in air accumulator, and the burner that this pyrolysis gas is supplied to radiant tube revolving bed is used as fuel, utilize radiant tube to carry out radiation heating to material simultaneously, the flue gas of pyrolysis gas burning generation and the pyrolysis gas of pyrolysis processing process generation are isolated completely.Thus, can separate and obtain all higher pyrolysis gas of purity and calorific value.According to embodiments of the invention, this pyrolysis gas can directly burn, and in the rear flue gas of burning, indices all meets discharge standard.Inventor's discovery, the fuel using this pyrolysis gas as revolving bed pyrolysis processing process uses, and can significantly improve efficiency of energy utilization, thereby can obviously cut down finished cost.
S400: the first cooling processing
According to embodiments of the invention, the zinc fume of above-mentioned collection is carried out to the first cooling processing, thereby can obtain metallic zinc.According to embodiments of the invention, zinc fume carries out the temperature of the first cooling processing and is not particularly limited, and according to a particular embodiment of the invention, the first cooling processing can be carried out at the temperature of 300～380 degrees Celsius.According to embodiments of the invention, in the above-mentioned zinc fume of collecting, contain partial thermal decomposition residual gas, because the second pyrolysis processing temperature is higher than 900 degrees Celsius, pyrolysis residual gas mainly contains the little molecule fuel gas such as hydrogen, carbon monoxide, not containing pyrolysis oil, therefore can obtain respectively pure metallic zinc and pyrolysis residual gas through the first cooling processing, and pyrolysis residual gas remittance high-temperature oil gas collecting pipe is carried out to post processing.Inventor's discovery, the cooling processing of carrying out in this temperature range can obviously be better than other temperature and improve the cooling effectiveness of metallic zinc, thereby can significantly improve the purity of metallic zinc.
S500: the second separating treatment
According to embodiments of the invention, the residue that above-mentioned steps is obtained carries out the second separating treatment, thereby can obtain respectively copper-containing metal mixture and inorganic glass fiber.According to embodiments of the invention, residue is carried out the mode of the second separating treatment and is not particularly limited, according to a particular embodiment of the invention, can carry out fragmentation to obtained residue and separate with selection by winnowing.
As mentioned above, can have and be selected from following advantage one of at least according to the method for the process circuit plate of the embodiment of the present invention:
According to adopting radiant tube revolving bed as wiring board pyrolysis installation in the method for the process circuit plate of the embodiment of the present invention, can realize the continuous processing of material, and low to physical property requirements such as raw material granularities, and cloth is even, be subject to thermal velocity fast, be easy to realize scale and industrialization;
Adopt flashboard that revolving bed is divided into reaction one district and reaction 2nd district according to the method for the process circuit plate of the embodiment of the present invention, reaction temperature by accurate control zones of different and reaction time can in same device, realize old circuit board in the pyrolysis resource of non-metal organic compound and the recovery of metallic zinc, process is simple, flow process is short, the rate of recovery of zinc is high;
Utilize radiant tube to carry out radiant heat transfer to material according to the method for the process circuit plate of the embodiment of the present invention, flue gas and the pyrolysis gas of generation are isolated completely, make that pyrolysis gas quality is pure, calorific value is high, are convenient to recycle;
Vent one's spleen as pyrolysis processing energy is provided take the combustion heat according to the method for the process circuit plate of the embodiment of the present invention, can significantly improve efficiency of energy utilization, thereby improve economy and the resource level of technique.
Below with reference to specific embodiment, present invention is described, it should be noted that, these embodiment are only descriptive, and do not limit the present invention in any way.
Embodiment 1
Adopting through the old circuit board of dismounting electric elements is raw material, is placed in disintegrating machine and carries out break process, and being crushed to particle diameter is 5-20mm; By through the wiring board raw material of break process by Belt Conveying to batcher, enter feeding system, by the thickness of feed layer of drapery panel control raw material; At the bottom of revolving burner, by material distributing machine, reaction one district is paved with to material, thickness of feed layer is 100～500 millimeters, and controlling reaction is under 750 degrees Celsius, to carry out 0.5～2 hour in temperature, and by being arranged at the multiple oil and gas pipes of furnace roof, produced oil gas is collected; Then open flashboard, started to the degree that just can make material pass through, at the bottom of revolving burner and cloth, until reaction one district and the reaction two uniform fulls with substance in district are closed flashboard, the temperature of controlling reaction 2nd district is 950 degrees Celsius and carries out 0.5～2 hour.Now, react a district and react two districts reactions and carry out simultaneously, because the boiling point of zinc is 907 degrees Celsius, therefore in reaction 2nd district, can generate zinc fume, partial thermal decomposition residual gas and residue, zinc fume and partial thermal decomposition residual gas are collected by the discharge being arranged in 2nd district; Finally open flashboard to the degree that just can make material pass through, at the bottom of revolving burner, by residue, by sealing screw discharging, simultaneous reactions one district continues charging and starts the reaction of second round.And the high-temperature oil gas of collection is carried out to cooling processing, obtain pyrolysis oil (accounting for the 19wt% of raw material) and pyrolysis gas (accounting for the 14wt% of raw material), and employing alkaline matter absorbs the deleterious acidic gases such as the halogen in pyrolysis gas, obtain pure pyrolysis gas, this pyrolysis gas can directly burn, after burning, in flue gas, indices all meets discharge standard, and the pyrolysis oil obtaining is sold as fuel oil or chemical products after collecting; Collect in air accumulator through the pyrolysis gas of purified treatment, be connected with radiant tube burner by press device, provide heat at radiation combustion inner pipe for pyrolysis processing process; Obtained zinc fume is carried out under 350 degrees Celsius to cooling processing, thereby can separate and obtain pure metallic zinc and (account for the 3.5wt% of raw material, purity is more than 99%) and partial thermal decomposition residual gas (accounting for the 2wt% of raw material), and pyrolysis residual gas is imported to high-temperature oil gas collecting pipe; Finally residue is carried out to separating treatment, obtain copper-containing metal mixture (accounting for the 28.5wt% of raw material) and inorganic glass fiber (accounting for the 12wt% of raw material).
Embodiment 2
Adopting through the old circuit board of dismounting electric elements is raw material, is placed in disintegrating machine and carries out break process, and being crushed to particle diameter is 5-20mm; By through the wiring board raw material of break process by Belt Conveying to batcher, enter feeding system, by the thickness of feed layer of drapery panel control raw material; At the bottom of revolving burner, by material distributing machine, reaction one district is paved with to material, thickness of feed layer is 100～500 millimeters, and controlling reaction is under 650 degrees Celsius, to carry out 0.5～2 hour in temperature, and by being arranged at the multiple oil and gas pipes of furnace roof, produced oil gas is collected; Then open flashboard, started to the degree that just can make material pass through, at the bottom of revolving burner and cloth, until reaction one district and the reaction two uniform fulls with substance in district are closed flashboard, the temperature of controlling reaction 2nd district is 930 degrees Celsius and carries out 0.5～2 hour.Now, react a district and react two districts reactions and carry out simultaneously, because the boiling point of zinc is 907 degrees Celsius, therefore in reaction 2nd district, can generate zinc fume, partial thermal decomposition residual gas and residue, zinc fume and partial thermal decomposition residual gas are collected by the discharge being arranged in 2nd district; Finally open flashboard to the degree that just can make material pass through, at the bottom of revolving burner, by residue, by sealing screw discharging, simultaneous reactions one district continues charging and starts the reaction of second round.And the high-temperature oil gas of collection is carried out to cooling processing, obtain pyrolysis oil (accounting for the 21wt% of raw material) and pyrolysis gas (accounting for the 15wt% of raw material), and employing alkaline matter absorbs the deleterious acidic gases such as the halogen in pyrolysis gas, obtain pure pyrolysis gas, this pyrolysis gas can directly burn, after burning, in flue gas, indices all meets discharge standard, and the pyrolysis oil obtaining is sold as fuel oil or chemical products after collecting; Collect in air accumulator through the pyrolysis gas of purified treatment, be connected with radiant tube burner by press device, provide heat at radiation combustion inner pipe for pyrolysis processing process; Obtained zinc fume is carried out under 360 degrees Celsius to cooling processing, thereby can separate and obtain pure metallic zinc and (account for the 2.8wt% of raw material, purity is more than 99%) and partial thermal decomposition residual gas (accounting for the 1.5wt% of raw material), and pyrolysis residual gas is imported to high-temperature oil gas collecting pipe; Finally residue is carried out to separating treatment, obtain copper-containing metal mixture (accounting for the 31wt% of raw material) and inorganic glass fiber (accounting for the 11wt% of raw material).
In the description of this description, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present invention or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, the schematic statement of above-mentioned term is not necessarily referred to identical embodiment or example.And specific features, structure, material or the feature of description can be with suitable mode combination in any one or more embodiment or example.
Although illustrated and described embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, those of ordinary skill in the art can change above-described embodiment within the scope of the invention in the situation that not departing from principle of the present invention and aim, modification, replacement and modification.
Claims (10)
1. a method for process circuit plate, is characterized in that, comprising:
(1) wiring board is carried out to break process;
(2) wiring board of process break process step (1) being obtained carries out pyrolysis processing in radiant tube revolving bed, to obtain respectively high-temperature oil gas, zinc fume and residue, wherein, described residue contains metal and inorganic glass fiber, described radiant tube revolving bed has burner, and described burner is the heat supply of described radiant tube revolving bed by combustion fuel;
(3) described high-temperature oil gas step (2) being obtained is carried out the first separating treatment, to obtain respectively pyrolysis oil and pyrolysis gas, and the burner that described pyrolysis gas is supplied to described radiant tube revolving bed is as fuel;
(4) described zinc fume step (2) being obtained carries out the first cooling processing, to obtain metallic zinc; And
(5) step (2) the described residue that obtains is carried out to the second separating treatment, to obtain respectively copper-containing metal mixture and inorganic glass fiber.
2. the method for process circuit plate according to claim 1, is characterized in that, in step (1), it is 5～20 millimeters that wiring board is carried out to break process to granularity.
3. the method for process circuit plate according to claim 1, is characterized in that, in step (2), described pyrolysis processing further comprises:
Wiring board is carried out in radiant tube revolving bed to the first pyrolysis processing, to obtain respectively described high-temperature oil gas and solid mixture; And
Described solid mixture is carried out to the second pyrolysis processing, to obtain respectively described zinc fume and residue.
4. the method for process circuit plate according to claim 3, is characterized in that, described the first pyrolysis processing is at the temperature of 600～850 degrees Celsius, to carry out 0.5～2 hour.
5. the method for process circuit plate according to claim 3, is characterized in that, described the second pyrolysis processing is at the temperature of 900～950 degrees Celsius, to carry out 0.5～2 hour.
6. the method for process circuit plate according to claim 1, is characterized in that, in step (3), described the first separating treatment further comprises:
Described high-temperature oil gas is carried out to the second cooling processing; And
Adopt alkaline matter to carry out purified treatment to pyrolysis gas.
7. the method for process circuit plate according to claim 6, is characterized in that, described the second cooling processing is to carry out at not higher than the temperature of 78 degrees Celsius.
8. the method for process circuit plate according to claim 6, is characterized in that, described alkaline matter is selected from least one in NaOH, calcium oxide and calcium carbonate.
9. the method for process circuit plate according to claim 1, is characterized in that, in step (4), described the first cooling processing is to carry out at the temperature of 300～380 degrees Celsius.
10. the method for process circuit plate according to claim 1, is characterized in that, in step (5), described the second separating treatment further comprises: described residue is carried out to fragmentation and separate with selection by winnowing.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104624611A (en) * | 2015-01-23 | 2015-05-20 | 长沙紫宸科技开发有限公司 | Energy-regeneration pollution-free disposal method for waste electrical appliance circuit board |
| CN105509062A (en) * | 2016-01-20 | 2016-04-20 | 南京工业大学 | Continuous pyrolysis incineration device for full-scale electronic and electrical product waste |
| CN105817461A (en) * | 2016-03-23 | 2016-08-03 | 中山大学 | High-added-value resource utilization device for waste circuit board electronic components |
| CN106623340A (en) * | 2015-10-28 | 2017-05-10 | 荆门市格林美新材料有限公司 | A cracking process and device for waste circuit boards |
| CN107326184A (en) * | 2017-07-03 | 2017-11-07 | 北京神源环保有限公司 | A kind of system and method for reclaiming copper foil in useless copper-clad plate |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005093323A1 (en) * | 2004-03-19 | 2005-10-06 | Peat International, Inc. | Method and apparatus for treating waste |
| CN1927480A (en) * | 2006-09-16 | 2007-03-14 | 大连理工大学 | Electronic refuse treatment method |
| CN101008050A (en) * | 2007-01-19 | 2007-08-01 | 王威平 | Harmless processing system and process for copper powder containing organism and glass fiber |
| CN101224463A (en) * | 2008-01-25 | 2008-07-23 | 于勇健 | Processing device of waste battery and poisonous condensate |
| CN101386015A (en) * | 2008-10-31 | 2009-03-18 | 天津大学 | Metal and non-metal pyrogenation separation method on waste printed plate board |
| CN101612628A (en) * | 2009-07-10 | 2009-12-30 | 广东工业大学 | The separation of each component material and recovery method in a kind of waste and old printed circuit board |
| CN102009058A (en) * | 2010-09-27 | 2011-04-13 | 北京航空航天大学 | Device for extracting glass fibers from waste printed circuit board and realizing energy utilization |
| CN102350429A (en) * | 2011-07-13 | 2012-02-15 | 大连理工大学 | Method for separation and recovery of metal and nonmetal in waste printed circuit board |
-
2014
- 2014-03-13 CN CN201410092213.1A patent/CN103831287B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005093323A1 (en) * | 2004-03-19 | 2005-10-06 | Peat International, Inc. | Method and apparatus for treating waste |
| CN1927480A (en) * | 2006-09-16 | 2007-03-14 | 大连理工大学 | Electronic refuse treatment method |
| CN101008050A (en) * | 2007-01-19 | 2007-08-01 | 王威平 | Harmless processing system and process for copper powder containing organism and glass fiber |
| CN101224463A (en) * | 2008-01-25 | 2008-07-23 | 于勇健 | Processing device of waste battery and poisonous condensate |
| CN101386015A (en) * | 2008-10-31 | 2009-03-18 | 天津大学 | Metal and non-metal pyrogenation separation method on waste printed plate board |
| CN101612628A (en) * | 2009-07-10 | 2009-12-30 | 广东工业大学 | The separation of each component material and recovery method in a kind of waste and old printed circuit board |
| CN102009058A (en) * | 2010-09-27 | 2011-04-13 | 北京航空航天大学 | Device for extracting glass fibers from waste printed circuit board and realizing energy utilization |
| CN102350429A (en) * | 2011-07-13 | 2012-02-15 | 大连理工大学 | Method for separation and recovery of metal and nonmetal in waste printed circuit board |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104624611A (en) * | 2015-01-23 | 2015-05-20 | 长沙紫宸科技开发有限公司 | Energy-regeneration pollution-free disposal method for waste electrical appliance circuit board |
| CN106623340A (en) * | 2015-10-28 | 2017-05-10 | 荆门市格林美新材料有限公司 | A cracking process and device for waste circuit boards |
| US9850433B2 (en) | 2015-12-31 | 2017-12-26 | Chz Technologies, Llc | Multistage thermolysis method for safe and efficient conversion of E-waste materials |
| US10961461B2 (en) | 2015-12-31 | 2021-03-30 | Chz Technologies, Llc | Multistage thermolysis method for safe and efficient conversion of e-waste materials |
| US11306255B2 (en) | 2015-12-31 | 2022-04-19 | Chz Technologies, Llc | Multistage thermolysis method for safe and efficient conversion of e-waste materials |
| US11814585B2 (en) | 2015-12-31 | 2023-11-14 | Chz Technologies, Llc | Multistage thermolysis method for safe and efficient conversion of e-waste materials |
| CN105509062A (en) * | 2016-01-20 | 2016-04-20 | 南京工业大学 | Continuous pyrolysis incineration device for full-scale electronic and electrical product waste |
| CN105817461A (en) * | 2016-03-23 | 2016-08-03 | 中山大学 | High-added-value resource utilization device for waste circuit board electronic components |
| CN105817461B (en) * | 2016-03-23 | 2019-01-25 | 中山大学 | A kind of device of waste and old circuit board electronic component high added value recycling |
| CN107470317A (en) * | 2017-06-15 | 2017-12-15 | 广东环境保护工程职业学院 | A kind of method of the debrominate of waste printed circuit board pyrolysis oil and lighting |
| CN107470317B (en) * | 2017-06-15 | 2020-01-14 | 广东环境保护工程职业学院 | Method for debrominating and lightening pyrolysis oil of waste circuit board |
| CN107326184A (en) * | 2017-07-03 | 2017-11-07 | 北京神源环保有限公司 | A kind of system and method for reclaiming copper foil in useless copper-clad plate |
| US10640711B2 (en) | 2018-06-05 | 2020-05-05 | Chz Technologies, Llc | Multistage thermolysis method for safe and efficient conversion of treated wood waste sources |
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