CN203778473U - Treatment system for circuit board - Google Patents
Treatment system for circuit board Download PDFInfo
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- CN203778473U CN203778473U CN201420114321.XU CN201420114321U CN203778473U CN 203778473 U CN203778473 U CN 203778473U CN 201420114321 U CN201420114321 U CN 201420114321U CN 203778473 U CN203778473 U CN 203778473U
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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
- Y02W30/82—Recycling of waste of electrical or electronic equipment [WEEE]
Abstract
The utility model discloses a treatment system for a circuit board. The treatment system comprises a crushing device, a radiant tube rotating bed, a first separation device, a pyrolysis gas recovery device, an activation device and a second separation device, wherein the radiant tube rotating bed is provided with a material inlet, a pyrolysis product outlet, an oil gas outlet, a pyrolysis gas inlet and a first flue gas outlet; the material inlet is connected with the crushing device; the first separation device is provided with an oil gas inlet, a pyrolysis oil outlet and a pyrolysis gas outlet; the oil gas inlet is connected with the oil gas outlet; the pyrolysis gas recovery device is provided with a purified gas inlet and a purified gas outlet; the purified gas inlet is connected with the pyrolysis gas outlet; the purified gas outlet is connected with the pyrolysis gas inlet; the activation device is provided with a flue gas inlet, a pyrolysis product inlet, an activated product outlet and a second flue gas outlet; the flue gas inlet is connected with the first flue gas outlet; the pyrolysis product inlet is connected with the pyrolysis product outlet; the second separation device is provided with an activated product inlet; the activated product inlet is connected with the activated product outlet. Thus, recycled resources and energy sources of the circuit board can be maximally utilized.
Description
Technical field
The utility model belongs to chemical field, and particularly, the utility model relates to a kind of system 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 3～5 times of municipal refuse growth rate.This situation is particularly serious in China, China is not only populous, the main place that while or developed country dump electronic waste, data shows that the electronic waste of the U.S. 80% exports to Asia, wherein 90% enter China, as the important component part of electronic product, also increasing year by year of the generation of waste printed circuit board.
In waste printed circuit board containing 40% the metal of having an appointment, 30% macromolecular organic compound and 30% inorganic glass fiber.At present, mainly comprise mechanical separation method, hydrometallurgical technology, biological metallurgy technology and pyrolytic technique both at home and abroad about the technology of waste printed circuit board recycling, these technology major part except pyrolysis is all paid close attention to the metal reclaiming in waste printed circuit board.The wherein easy scale of mechanical separation method, and relatively little to the pollution of environment, but various metal cannot thoroughly separate, and residual organic substances or landfill or burning, not only waste resource but also environmental pollution is serious; The metal recovery rate of hydrometallurgy is high, but chemical reagent consumption is larger, complex process, and the macromolecular organic compound in wiring board is not recycled utilization equally; Biological metallurgy technology is at present also in conceptual phase, the considerably less and very difficult cultivation of applicable bacterium; Comparatively speaking, pyrolytic technique, by pyrolytic, can not only effectively be utilized macromolecule organic material wherein, be decomposed into fuel oil, combustion gas and carbide, more easily pyrolysis afterproduct is separated simultaneously, the metal in recovery train plate and glass fibre, recycling rate is high.
Pyrolysis waste printed circuit board mainly adopts the method for vacuum pyrolysis or microwave-heating at present; these two kinds of methods are mostly also in the laboratory research stage; and higher to equipment requirement; the nucleus equipment vacuum pyrolysis stove or the microwave-heating stove that adopt mostly at present are laboratory scale mini-plant; not only treating capacity is little; and many cannot continuous operation; if be applied to suitability for industrialized production; keep the interior vacuum state of stove or continue to produce microwave consuming mass energy, be therefore difficult to realize industrialization and large-scale production.That announces also concentrates on the recovery of metal in the refining and solid product of pyrolysis oil to the recoverying and utilizing method of product simultaneously mostly, and other product is not further utilized.
Therefore, the existing treatment system to wiring board needs further to be studied.
Utility model content
The utility model is intended to one of solve the problems of the technologies described above at least to a certain extent.For this reason, an object of the present utility model is to propose a kind of system of process circuit plate, and this system can realize the recycling resource of wiring board and the maximum using of the energy.
Aspect one of the present utility model, the utility model proposes a kind of system of process circuit plate, this system comprises:
Breaker, described breaker has feed(raw material)inlet and material outlet;
Radiant tube revolving bed, described radiant tube revolving bed has material inlet, thermal decomposition product outlet, oil gas vent, pyrolysis gas entrance and the first exhanst gas outlet, and described material inlet is connected with described material outlet;
The first separator, described the first separator has oil gas entrance, pyrolysis oil outlet and pyrolysis gas outlet, and described oil gas entrance is connected with described oil gas vent;
Pyrolysis gas retracting device, described pyrolysis gas retracting device has purified gas entrance and clean gas outlet, and described purified gas entrance is connected with described pyrolysis gas outlet, and described clean gas outlet is connected with described pyrolysis gas entrance;
Activating apparatus, described activating apparatus has smoke inlet, thermal decomposition product entrance, activation products outlet and the second exhanst gas outlet, and described smoke inlet is connected with described the first exhanst gas outlet, and described thermal decomposition product entrance is connected with described thermal decomposition product outlet; And
The second separator, described the second separator has activation products entrance, active carbon discharge gate, metal discharge gate and inorganic glass fiber discharge gate, and described activation products entrance is connected with described activation products outlet.
Can effectively process old circuit board according to the system of the process circuit plate of the utility model embodiment, by adopting radiant tube revolving bed to carry out pyrolysis processing, can realize the continuous processing of wiring 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, the activation processing process for pyrolysis surplus solid mixture by produced flue gas simultaneously, not only can prepare high performance active carbon, be convenient to and the separating of metal and inorganic glass fiber simultaneously, thereby realize the maximum using of wiring board recycling resource and the energy.
In addition, can also there is following additional technical characterictic according to the system of the process circuit plate of the utility model above-described embodiment:
In embodiment more of the present utility model, cooling unit, described cooling unit is connected with described radiant tube revolving bed; And clean unit, described clean unit is connected with described cooling unit.Thus, can separate and obtain the pyrolysis oil of high-quality and pure pyrolysis gas.
Additional aspect of the present utility model and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present utility model.
Brief description of the drawings
Above-mentioned and/or additional aspect of the present utility model and advantage accompanying drawing below combination is understood becoming the description of embodiment obviously and easily, wherein:
Fig. 1 is according to the structural representation of the system of the process circuit plate of an embodiment of the utility model;
Fig. 2 is according to the structural representation of the system of the process circuit plate of another embodiment of the utility model;
Fig. 3 is the schematic flow sheet that utilizes the method for the system process circuit plate of the process circuit plate of an embodiment of the utility model;
Fig. 4 is the schematic flow sheet that utilizes the method for the system process circuit plate of the process circuit plate of another embodiment of the utility model.
Detailed description of the invention
Describe embodiment of the present utility model 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 utility model, and can not be interpreted as restriction of the present utility model.
In description of the present utility model, it will be appreciated that, term " first ", " second " be only for describing object, and can not be interpreted as instruction 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 present utility model, the implication of " multiple " is two or more, unless otherwise expressly limited specifically.
In the utility model, unless otherwise clearly defined and limited, the terms such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and for example, can be to be fixedly connected with, and can be also to removably connect, or connect integratedly; Can be mechanical connection, can be also electrical connection; Can be to be directly connected, also can indirectly be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, can understand as the case may be the concrete meaning of above-mentioned term in the utility model.
In this article, as without clearly stating, the term " pyrolytic carbon compound " using can be understood as in wiring board the carbon containing organic mixture that obtains after pyrolytic reaction of material that can pyrolysis.
Aspect one of the present utility model, the utility model proposes a kind of system of process circuit plate.The system of the process circuit plate below with reference to Fig. 1-2 to the utility model embodiment is described in detail.According to embodiment of the present utility model, this system comprises:
Breaker 100: according to embodiment of the present utility model, breaker 100 has feed(raw material)inlet 101 and material outlet 102.According to embodiment of the present utility model, breaker 100 is suitable for wiring board to carry out break process, thereby can obtain the wiring board particle through break process.According to embodiment of the present utility model, 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 embodiment of the present utility model, wiring board is carried out the method for break process and is not particularly limited, according to specific embodiment of the utility model, can adopt disintegrating machine to carry out break process to wiring board.According to embodiment of the present utility model, the granularity of the wiring board particle obtaining is also not particularly limited, and according to specific embodiment of the utility model, 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.
Radiant tube revolving bed 200: according to embodiment of the present utility model, radiant tube revolving bed 200 has material inlet 201, thermal decomposition product outlet 202, oil gas vent 203, pyrolysis gas entrance 204 and the first exhanst gas outlet 205, according to specific embodiment of the utility model, material inlet 201 is connected with material outlet 102, and be suitable for the wiring board through break process to carry out pyrolysis processing, thereby can obtain high-temperature oil gas and solid mixture, according to specific embodiment of the utility model, in solid mixture, can comprise pyrolytic carbon compound, metal and inorganic glass fiber.According to embodiment of the present utility model, radiant tube revolving bed has the burner being arranged in radiant tube, and this burner is revolving bed heat supply by combustion fuel, produces flue gas simultaneously.It should be noted that, 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.Inventor finds, adopts radiant tube revolving bed to carry out pyrolysis processing to wiring board, compared with adopting vacuum pyrolysis stove, can significantly reduce the requirement to equipment and process in the past, and can realize the continuous processing of material, thereby make it be easy to scale and industrialization.According to embodiment of the present utility model, the temperature of pyrolysis processing is also not particularly limited, and according to specific embodiment of the utility model, pyrolysis processing can be carried out at the temperature of 500～850 degrees Celsius.Inventor's discovery, the pyrolysis processing of carrying out in this temperature range can obviously be better than the pyrolysis efficiency of other temperature raising wiring board.In this step, the high-temperature oil gas of generation can be collected by the multiple oil and gas pipes in furnace roof setting.
The first separator 300: according to embodiment of the present utility model, the first separator 300 has oil gas entrance 301, pyrolysis oil outlet 302 and pyrolysis gas outlet 303, according to specific embodiment of the utility model, oil gas entrance 301 is connected with oil gas vent 203, and be suitable for described high-temperature oil gas to carry out the first separating treatment, thereby can obtain respectively pyrolysis oil and pyrolysis gas.Below with reference to Fig. 2, the first separator 300 is described in detail, according to embodiment of the present utility model, the first separator comprises:
Cooling unit 310: according to embodiment of the present utility model, cooling unit 310 is connected with oil gas vent 203, and be suitable for high-temperature oil gas to carry out 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 embodiment of the present utility model, high-temperature oil gas is carried out the condition of cooling processing and is not particularly limited, according to specific embodiment of the utility model, cooling processing can be carried out at the temperature that is no more than 78 degrees Celsius.According to embodiment of the present utility model, the mode of cooling processing is also not particularly limited, according to specific embodiment of the utility model, 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.
Clean unit 320: according to embodiment of the present utility model, clean unit 320 is connected with cooling unit 310.According to embodiment of the present utility model, 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 embodiment of the present utility model, the concrete grammar of purified treatment is also not particularly limited, and according to specific embodiment of the utility model, can adopt alkaline matter to carry out purified treatment to pyrolysis gas.According to embodiment of the present utility model, the particular type of the alkaline matter of employing is also not particularly limited, and according to specific embodiment of the utility model, alkaline matter can be for being selected from least one in NaOH, calcium oxide and calcium carbonate.Inventor finds, such alkaline matter can be better than other cleanser to be removed and in pyrolysis gas, contain the deleterious acidic gases such as halogen, thereby can the higher pyrolysis gas of purity.
Pyrolysis gas retracting device 400: according to embodiment of the present utility model, pyrolysis gas retracting device 400 has purified gas entrance 401 and clean gas outlet 402, according to specific embodiment of the utility model, purified gas entrance 401 is connected with pyrolysis gas outlet 303, clean gas outlet 402 is connected with pyrolysis gas entrance 204, and the burner that is suitable for collecting pyrolysis gas and is supplied to radiant tube revolving bed uses 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 embodiment of the present utility model, 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.
Activating apparatus 500: according to embodiment of the present utility model, activating apparatus 500 has smoke inlet 501, thermal decomposition product entrance 502, activation products outlet 503 and the second exhanst gas outlet 504, according to specific embodiment of the utility model, smoke inlet 501 is connected with the first exhanst gas outlet 205, thermal decomposition product entrance 502 is connected with thermal decomposition product outlet 202, and the solid mixture that is suitable for that the produced flue gas that burns in the radiant tube in radiant tube revolving bed is obtained with pyrolysis processing contacts and carries out activation processing, thereby the pyrolytic carbon compound in solid mixture can be converted into active carbon.According to embodiment of the present utility model, the temperature of activation processing is also not particularly limited, and according to specific embodiment of the utility model, activation processing can be carried out 0.5～3 hour at the temperature of 800～950 degrees Celsius.According to embodiment of the present utility model, the temperature of the high-temperature flue gas after burning can be 550～870 degrees Celsius.According to embodiment of the present utility model, the temperature of the solid mixture obtaining through pyrolysis processing is 500～850 degrees Celsius, and directly contacts with flue gas and carry out activation processing without cooling processing.Thus, in activation processing process, do not need extra additional heat or only need supplement few heat, thereby can significantly reduce energy resource consumption in activation processing process.In this step, concrete, in flue gas after burning, be rich in carbon dioxide and steam, wherein, carbon dioxide can react with charcoal and generate carbon monoxide, steam can react with charcoal and generate carbon monoxide and hydrogen, these gases can play perforate, reaming and perforating action, flue gas after burning is used as activator, it is contacted with the solid mixture producing in pyrolysis processing process, can realize the pyrolytic carbon compound in solid mixture is converted into high performance active carbon, in activation processing process, can make pore structure prosperity without extra supplementing water steam simultaneously, the measured active carbon of matter.Inventor finds, activator by the flue gas producing after burning for solid mixture, not only can significantly reduce energy resource consumption in activation processing process, can also obviously reduce activator cost simultaneously, in addition, solid mixture is carried out to activation processing and not only can make high performance active carbon, and be convenient to separate metal and the inorganic glass fiber in follow-up solid mixture, thereby pyrolysis gas, pyrolysis oil, pyrolytic carbon that pyrolysis is produced have all obtained utilization, and then significantly improve energy utilization rate and the resource level of wiring board pyrolysis.
The second separator 600: according to embodiment of the present utility model, the second separator 600 has activation products entrance 601, active carbon discharge gate 602, metal discharge gate 603 and inorganic glass fiber discharge gate 604, according to specific embodiment of the utility model, activation products entrance 601 is connected with activation products outlet 503, and be suitable for obtained activation processing product to carry out the second separating treatment, thereby can obtain respectively active carbon, metal and inorganic glass fiber.According to embodiment of the present utility model, activation products are carried out the mode of the second separating treatment and are not particularly limited, according to specific embodiment of the utility model, can carry out fragmentation to obtained activation products and separate with selection by winnowing.
In order conveniently to understand the system of process circuit plate of the utility model above-described embodiment, the method for utilizing the system of the process circuit plate of the utility model embodiment to carry out process circuit plate below with reference to Fig. 3-4 pair is described in detail.According to embodiment of the present utility model, the method comprises:
S100: break process
According to embodiment of the present utility model, wiring board is carried out to break process, thereby can obtain the wiring board particle through break process.According to embodiment of the present utility model, 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 embodiment of the present utility model, wiring board is carried out the method for break process and is not particularly limited, according to specific embodiment of the utility model, can adopt disintegrating machine to carry out break process to wiring board.According to embodiment of the present utility model, the granularity of the wiring board particle obtaining is also not particularly limited, and according to specific embodiment of the utility model, 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 embodiment of the present utility model, the wiring board of above-mentioned obtained process break process is carried out to pyrolysis processing, thereby can obtain high-temperature oil gas and solid mixture, according to specific embodiment of the utility model, in solid mixture, can comprise pyrolytic carbon compound, metal and inorganic glass fiber.According to embodiment of the present utility model, the device of pyrolysis processing can adopt radiant tube revolving bed.According to embodiment of the present utility model, radiant tube revolving bed has the burner being arranged in radiant tube, and this burner is revolving bed heat supply by combustion fuel, produces flue gas simultaneously.It should be noted that, 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.Inventor finds, adopts radiant tube revolving bed to carry out pyrolysis processing to wiring board, compared with adopting vacuum pyrolysis stove, can significantly reduce the requirement to equipment and process in the past, and can realize the continuous processing of material, thereby make it be easy to scale and industrialization.According to embodiment of the present utility model, the temperature of pyrolysis processing is also not particularly limited, and according to specific embodiment of the utility model, pyrolysis processing can be carried out at the temperature of 500～850 degrees Celsius.Inventor's discovery, the pyrolysis processing of carrying out in this temperature range can obviously be better than the pyrolysis efficiency of other temperature raising wiring board.In this step, the high-temperature oil gas of generation can be collected by the multiple oil and gas pipes in furnace roof setting.
S300: the first separating treatment
According to embodiment of the present utility model, 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. 4, the first separating treatment step is described in detail, according to embodiment of the present utility model, the first separating treatment comprises:
S310: cooling processing
According to embodiment of the present utility model, the high-temperature oil gas of collection is carried out to 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 embodiment of the present utility model, high-temperature oil gas is carried out the condition of cooling processing and is not particularly limited, according to specific embodiment of the utility model, cooling processing can be carried out at the temperature that is no more than 78 degrees Celsius.According to embodiment of the present utility model, the mode of cooling processing is also not particularly limited, according to specific embodiment of the utility model, 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 embodiment of the present utility model, 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 embodiment of the present utility model, the concrete grammar of purified treatment is also not particularly limited, and according to specific embodiment of the utility model, can adopt alkaline matter to carry out purified treatment to pyrolysis gas.According to embodiment of the present utility model, the particular type of the alkaline matter of employing is also not particularly limited, and according to specific embodiment of the utility model, alkaline matter can be for being selected from least one in NaOH, calcium oxide and calcium carbonate.According to embodiment of the present utility model, 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 embodiment of the present utility model, 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: activation processing
According to embodiment of the present utility model, the solid mixture that the produced flue gas that burns in radiant tube in radiant tube revolving bed is obtained with pyrolysis processing contacts and carries out activation processing, thereby the pyrolytic carbon compound in solid mixture can be converted into active carbon.According to embodiment of the present utility model, the temperature of activation processing is also not particularly limited, and according to specific embodiment of the utility model, activation processing can be carried out 0.5～3 hour at the temperature of 800～950 degrees Celsius.According to embodiment of the present utility model, the temperature of the high-temperature flue gas after burning can be 550～870 degrees Celsius.According to embodiment of the present utility model, the temperature of the solid mixture obtaining through pyrolysis processing is 500～850 degrees Celsius, and directly contacts with flue gas and carry out activation processing without cooling processing.Thus, in activation processing process, do not need extra additional heat or only need supplement few heat, thereby can significantly reduce energy resource consumption in activation processing process.In this step, concrete, in flue gas after burning, be rich in carbon dioxide and steam, wherein, carbon dioxide can react with charcoal and generate carbon monoxide, steam can react with charcoal and generate carbon monoxide and hydrogen, these gases can play perforate, reaming and perforating action, flue gas after burning is used as activator, it is contacted with the solid mixture producing in pyrolysis processing process, can realize the pyrolytic carbon compound in solid mixture is converted into high performance active carbon, in activation processing process, can make pore structure prosperity without extra supplementing water steam simultaneously, the measured active carbon of matter.Inventor finds, activator by the flue gas producing after burning for solid mixture, not only can significantly reduce energy resource consumption in activation processing process, can also obviously reduce activator cost simultaneously, in addition, solid mixture is carried out to activation processing and not only can make high performance active carbon, and be convenient to separate metal and the inorganic glass fiber in follow-up solid mixture, thereby pyrolysis gas, pyrolysis oil, pyrolytic carbon that pyrolysis is produced have all obtained utilization, and then significantly improve energy utilization rate and the resource level of wiring board pyrolysis.
S500: the second separating treatment
According to embodiment of the present utility model, above-mentioned steps gained activation processing product is carried out to the second separating treatment, thereby can obtain respectively active carbon, metal and inorganic glass fiber.According to embodiment of the present utility model, activation products are carried out the mode of the second separating treatment and are not particularly limited, according to specific embodiment of the utility model, can carry out fragmentation to obtained activation products 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 utility model embodiment:
According to adopting radiant tube revolving bed as circuit board pyrolytic device in the method for the process circuit plate of the utility model embodiment, can realize the continuous processing of material, be easy to realize scale and industrialization;
By pyrolysis solid mixture is further activated, not only can obtain the active carbon that absorption property is good according to the method for the process circuit plate of the utility model embodiment, and be conducive to separate metal, inorganic glass fiber wherein;
Utilize radiant tube to carry out radiant heat transfer to material according to the method for the process circuit plate of the utility model embodiment, 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;
Adopt alkaline matter to purify pyrolysis gas according to the method for the process circuit plate of the utility model embodiment, absorb especially bromine-containing gas of deleterious acidic gas wherein, and the combustible gas after purifying is supplied to radiant tube burning, the flue gas of burning gained is rich in steam and carbon dioxide, can directly reclaim for activation processing;
Vent one's spleen as pyrolysis processing energy is provided taking the combustion heat according to the method for the process circuit plate of the utility model embodiment, can significantly improve efficiency of energy utilization, after burning, flue gas is for activation processing simultaneously, the not only effective heat in recovered flue gas, additionally provide the investment of activator but also reduced, thereby improved economy and the resource level of technique;
According to the whole technique of the method for the process circuit plate of the utility model embodiment by wiring board by pyrolysis and product separation activation processing, and provide the energy by pyrolysis gas burning for system, final production pyrolysis oil, active carbon, metal and glass fibre, realized the resource of wiring board and the maximum using of the energy.
Below with reference to specific embodiment, the utility model is described, it should be noted that, these embodiment are only descriptive, and limit never in any form the utility model.
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, to evenly feed in radiant tube revolving bed pyrolysis oven and carry out pyrolysis processing through the wiring board raw material of break process, in rotary course, material is heated to 530 DEG C gradually, and setting the time rotating a circle is 2.5h, after pyrolytic reaction is complete, obtain high-temperature oil gas and solid mixture (accounting for the 64wt% of raw material), wherein, high-temperature oil gas is collected by the multiple oil and gas pipes that arrange at pyrolysis oven furnace roof, and the high-temperature oil gas of collection is carried out in cooling unit to cooling processing, obtain pyrolysis oil (accounting for the 20wt% of raw material) and pyrolysis gas (accounting for the 16wt% of raw material), and in clean unit, adopt alkaline matter to absorb the deleterious acidic gases such as halogen in pyrolysis gas, obtain pure pyrolysis gas, this pyrolysis gas can directly burn, after burning, in flue gas, indices all meets discharge standard, the pyrolysis oil obtaining is sold as fuel oil or chemical products after collecting, pyrolysis gas through purified treatment is collected in pyrolysis gas retracting device, be connected with radiant tube burner by press device, provide heat at radiation combustion inner pipe for pyrolysis processing process, ignition temperature is 620 DEG C, high-temperature flue gas after burning is rich in carbon dioxide and steam, and flue-gas temperature is 580 DEG C, the high-temperature flue gas of gained after burning is contacted and carries out activation processing with the solid mixture that pyrolysis processing process produces in activating apparatus, and activation temperature is 800 DEG C, and the activation time of staying is 2.5h, finally activation processing product is carried out in the second separator to separating treatment, obtain active carbon (accounting for the 15wt% of raw material), metal (accounting for the 36wt% of raw material) and inorganic glass fiber (accounting for the 13wt% 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, to evenly feed in radiant tube revolving bed pyrolysis oven and carry out pyrolysis processing through the wiring board raw material of break process, in rotary course, material is heated to 770 DEG C gradually, and setting the time rotating a circle is 1.5h, after pyrolytic reaction is complete, obtain high-temperature oil gas and solid mixture (accounting for the 60wt% of raw material), wherein, high-temperature oil gas is collected by the multiple oil and gas pipes that arrange at pyrolysis oven furnace roof, and the high-temperature oil gas of collection is carried out in cooling unit to cooling processing, obtain pyrolysis oil (accounting for the 17wt% of raw material) and pyrolysis gas (accounting for the 23wt% of raw material), and in clean unit, adopt alkaline matter to absorb the deleterious acidic gases such as halogen in pyrolysis gas, obtain pure pyrolysis gas, this pyrolysis gas can directly burn, after burning, in flue gas, indices all meets discharge standard, the pyrolysis oil obtaining is sold as fuel oil or chemical products after collecting, pyrolysis gas through purified treatment is collected in pyrolysis gas retracting device, be connected with radiant tube burner by press device, provide heat at radiation combustion inner pipe for pyrolysis processing process, ignition temperature is 850 DEG C, high-temperature flue gas after burning is rich in carbon dioxide and steam, and flue-gas temperature is 780 DEG C, the high-temperature flue gas of gained after burning is contacted and carries out activation processing with the solid mixture that pyrolysis processing process produces in activating apparatus, and activation temperature is 900 DEG C, and the activation time of staying is 1.5h, finally activation processing product is carried out in the second separator to separating treatment, obtain active carbon (accounting for the 20wt% of raw material), metal (accounting for the 30wt% of raw material) and inorganic glass fiber (accounting for the 10wt% 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 utility model 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 embodiment of the present utility model above, be understandable that, above-described embodiment is exemplary, can not be interpreted as restriction of the present utility model, those of ordinary skill in the art can change above-described embodiment in the situation that not departing from principle of the present utility model and aim in scope of the present utility model, amendment, replacement and modification.
Claims (2)
1. a system for process circuit plate, is characterized in that, comprising:
Breaker, described breaker has feed(raw material)inlet and material outlet;
Radiant tube revolving bed, described radiant tube revolving bed has material inlet, thermal decomposition product outlet, oil gas vent, pyrolysis gas entrance and the first exhanst gas outlet, and described material inlet is connected with described material outlet;
The first separator, described the first separator has oil gas entrance, pyrolysis oil outlet and pyrolysis gas outlet, and described oil gas entrance is connected with described oil gas vent;
Pyrolysis gas retracting device, described pyrolysis gas retracting device has purified gas entrance and clean gas outlet, and described purified gas entrance is connected with described pyrolysis gas outlet, and described clean gas outlet is connected with described pyrolysis gas entrance;
Activating apparatus, described activating apparatus has smoke inlet, thermal decomposition product entrance, activation products outlet and the second exhanst gas outlet, and described smoke inlet is connected with described the first exhanst gas outlet, and described thermal decomposition product entrance is connected with described thermal decomposition product outlet; And
The second separator, described the second separator has activation products entrance, active carbon discharge gate, metal discharge gate and inorganic glass fiber discharge gate, and described activation products entrance is connected with described activation products outlet.
2. the system of process circuit plate according to claim 1, is characterized in that, described the first separator further comprises:
Cooling unit, described cooling unit is connected with described radiant tube revolving bed; And
Clean unit, described clean unit is connected with described cooling unit.
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| CN201420114321.XU CN203778473U (en) | 2014-03-13 | 2014-03-13 | Treatment system for circuit board |
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| CN201420114321.XU CN203778473U (en) | 2014-03-13 | 2014-03-13 | Treatment system for circuit board |
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Cited By (5)
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| CN104646400A (en) * | 2015-02-13 | 2015-05-27 | 唐瑞文 | Glass fiber reinforced plastics decomposition recovery system with gas purification function and glass fiber reinforced plastics decomposition recovery method |
| CN106185940A (en) * | 2016-08-29 | 2016-12-07 | 北京神雾环境能源科技集团股份有限公司 | A kind of system and method processing waste and old electronic product |
| CN106185938A (en) * | 2016-08-29 | 2016-12-07 | 北京神雾环境能源科技集团股份有限公司 | The system and method that a kind of Waste ammunition processes |
| CN106276904A (en) * | 2016-08-29 | 2017-01-04 | 北京神雾环境能源科技集团股份有限公司 | The system and method that a kind of Waste ammunition processes |
| CN112978765A (en) * | 2021-05-20 | 2021-06-18 | 中国恩菲工程技术有限公司 | Waste circuit board pyrolysis debromination purification device and method |
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2014
- 2014-03-13 CN CN201420114321.XU patent/CN203778473U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104646400A (en) * | 2015-02-13 | 2015-05-27 | 唐瑞文 | Glass fiber reinforced plastics decomposition recovery system with gas purification function and glass fiber reinforced plastics decomposition recovery method |
| CN106185940A (en) * | 2016-08-29 | 2016-12-07 | 北京神雾环境能源科技集团股份有限公司 | A kind of system and method processing waste and old electronic product |
| CN106185938A (en) * | 2016-08-29 | 2016-12-07 | 北京神雾环境能源科技集团股份有限公司 | The system and method that a kind of Waste ammunition processes |
| CN106276904A (en) * | 2016-08-29 | 2017-01-04 | 北京神雾环境能源科技集团股份有限公司 | The system and method that a kind of Waste ammunition processes |
| CN106185938B (en) * | 2016-08-29 | 2019-02-26 | 神雾科技集团股份有限公司 | A kind of system and method for Waste ammunition processing |
| CN112978765A (en) * | 2021-05-20 | 2021-06-18 | 中国恩菲工程技术有限公司 | Waste circuit board pyrolysis debromination purification device and method |
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