CN202725605U - Hydrothermal treatment device for discarded printed circuit boards - Google Patents
Hydrothermal treatment device for discarded printed circuit boards Download PDFInfo
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- CN202725605U CN202725605U CN201220279814XU CN201220279814U CN202725605U CN 202725605 U CN202725605 U CN 202725605U CN 201220279814X U CN201220279814X U CN 201220279814XU CN 201220279814 U CN201220279814 U CN 201220279814U CN 202725605 U CN202725605 U CN 202725605U
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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
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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]
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- Processing Of Solid Wastes (AREA)
Abstract
The utility model provides a hydrothermal treatment device for separating copper foil from glass fiber of discarded printed circuit boards. The hydrothermal treatment device mainly comprises five parts, namely a heating and temperature control system, an atmosphere control system, a pressure monitoring system, a smoke gas purification system and an oil-water separation and recycling system. After the discarded printed circuit boards are treated by the device, epoxy resin in the circuit boards is embrittled and loses the adhesion capability, the metal copper foil can be completely separated from the glass fiber under the action of smaller external force, and the granular or flaky metal copper foil and the flocculent glass fiber can be obtained after breaking and separation. The reaction device provided by the utility model has the characteristics of simple treatment process, high metal separation efficiency, low energy consumption and no environmental pollution.
Description
Technical field
The utility model relates to the device that a kind of hydrothermal treatment consists discarded circuit board reclaims Copper Foil and glass fibre; be particularly suitable for composition metal and separate and recycling utilization with the nonmetallic materials modification, the solid waste that belongs to environmental protection and comprehensive utilization of resources field is processed the new technology application.
Background technology
At present, the discarded circuit board resource recycle method mainly comprises Mechanical Method, hydrometallurgy, pyrometallurgy etc., and wherein the hydro-metallurgical reagent consumption is large, can produce a large amount of acid sludges and waste liquid, can cause secondary pollution to environment.Contain large amount of organic and organic fire-retardant in the wiring board, organic compound combustion can produce a large amount of toxic and harmfuls in the pyrometallurgy processing procedure, has greater environmental impacts.Mechanical treatment is to use the method that physical property difference is carried out sorting between each component; comprise the steps such as dismounting, fragmentation, sorting; material after the sorting process can obtain respectively the regenerative raw materials such as metal, plastics, glass through subsequent treatment again; it is low that this processing method has a cost; simple to operate; being difficult for causing secondary pollution, easily realizing the advantages such as scale, is the wiring board recovery technology that is most widely used.But machinery separates and limited by powder particle diameter and sorting particle diameter, the metal part with nonmetally separate thoroughly, the shortcomings such as mechanical wear is large in the further split purification of separated product needs, shattering process.
The mechanism that the wiring board hydrothermal modification is processed mainly is divided into following two aspects: the one, and this processing mode is different from a large amount of poisonous and corrosive fumes of the complete cracking generation of cured epoxy resin in the pyrolysismethod, produce slight embrittlement cracking phenomenon at hydrothermal condition epoxy resin, avoid the generation of poison gas, and epoxy resin loses former flexible, so that wiring board is easier to be broken apart.Be to have different thermal expansions and mechanical thermal mechanical characteristic according to Copper Foil, glass fibre and epoxy resin on the other hand, utilize at a certain temperature the different material thermodynamic differences, can produce different deformation, and then so that the layering of wiring board different material dissociate.In order to overcome the shortcoming of Mechanical Method, the utility model has designed a cover wiring board hydrothermal modification treating apparatus, with embrittlement after the discarded circuit board hydrothermal treatment consists, thereby Copper Foil and glass fibre overall separation are reclaimed, to discharge after the gas purification that produce in the processing procedure simultaneously, reactant liquor is cycling and reutilization after separating, neutralize, purifying.
Summary of the invention
Separate not thorough for solving the different component that exists in the Mechanical Method process circuit plate process, separated product needs further split to purify, the shortcomings such as the disintegrating apparatus wearing and tearing are large, the utility model provides the cover wiring board hydrothermal modification treating apparatus that dissociates, main purpose is that wiring board is carried out hydrothermal treatment consists, make the recovery of can fully dissociating of wiring board different component, obtain the metal (Copper Foil) and byssaceous nonmetal (epoxy resin is attached on fiberglass surfacing) of graininess or sheet behind the cracking and sorting, the method not only can obtain the copper sheet of higher degree, the non-metallic part that reclaims simultaneously no longer is pulverous glass fibre, but be byssaceous glass fibre, can greatly improve selection by winnowing efficient.Utilize the method not only can obtain the sheet Copper Foil of higher degree, can reclaim glass fibre simultaneously; Copper Foil can be further used for reclaiming noble metal, and glass fibre can be used for reclaiming fire retardant, then is used in the fields such as building materials reinforcing material, resin reinforcing material and catalyst carrier.
The discarded circuit board hydrothermal treatment device that the utility model provides mainly is made of five parts, is respectively: heating and temperature control system, atmosphere control system, pressure monitoring system, flue gas purification system and water-oil separating reclaiming system.It is characterized in that kettle is vertical tubular structure, the kettle outside is provided with heat-insulation layer and reduces energy loss.Inner wall of kettle is inlaid with many group high-temperature heating rods and temperature measuring equipment, and by heating and temperature control system control heating rate and temperature retention time.In still, be provided with stainless steel material basket, in order to hold discarded circuit board.The external atmosphere control system of kettle comprises nitrogen flow controller and nitrogen cylinder, according to the difference of actual treatment condition, can conveniently adjust the atmosphere (selecting) in the kettle between nitrogen atmosphere and air atmosphere.The kettle top is provided with a pressure detector simultaneously.Flue gas purification system is provided with filtrating smoke dust net and waste gas purification filtrate, in order to the flue dust in the filtering gas or peculiar smell.Aspiration pump links to each other with gas purge system, in order to provide gas flow driving force.Reactor is provided with pipeline by the bottom and is connected with oil-water separation tank, makes the profit standing demix by Action of Gravity Field.Oil phase is transported in the pyrolysis oil accumulator tank, and water then is transported to first sour neutralization chamber to be added appropriate bases and implement neutralisation treatment, is reusable edible after then being transported to lautertuns and processing.Above-mentioned heater and temperature control equipment, its temperature control precision is in ± 1 ℃ of scope.
The beneficial effects of the utility model are, after modification, epoxy resin embrittlement in the wiring board loses cementability, so that metal copper foil and glass fibre dissociate under less External Force Acting fully, product is granular Copper Foil and flocculence glass fibre simultaneously, different component efficiently can be separated recovery through selection by winnowing again.
The utility model possesses following characteristics:
1, the hydrothermal process still is furnished with the atmosphere control system, can change kettle atmosphere according to different production requirement needs and reduce processing cost (atmosphere can be divided into nitrogen atmosphere and air atmosphere in the still).When modification temperature is lower than 250 ℃, be fit to use air atmosphere.Because wiring board may produce slight cracking phenomenon with this understanding, the steam of generation is mainly steam.After holding temperature surpasses 250 ℃, be fit to use nitrogen atmosphere.Organic component in the wiring board begins cracking at this moment, and steam is mainly cracked oil steam in the still, and the purpose that is filled with nitrogen is the generation for the oxidation that prevents cracked oil and toxic gas.
2, can produce pyrolysis oil and bromize hydrogen gas, hydrogen bromide formation hydrobromic acid soluble in water in the wiring board modification process.Pyrolysis oil and water AUTOMATIC ZONING under the normal temperature state after the modification, Main Ingredients and Appearance are that the pyrolysis oil of phenol can be used as industrial chemicals and recycles, and wiring board modification waste water is in alkali and can be recycling after filtering.
3, wiring board is after modification, cured epoxy resin loses toughness and becomes brittle substance, different component is very easily broken apart, (the broken time is short after crusher in crushing, only needed different component fully can be dissociated in 0.5～2 minute), products therefrom is copper sheet and the byssaceous glass fibre (non-modified wiring board direct mechanical breakdown products is Powdered) of graininess or sheet, cotton-shaped glass fibre can improve the efficient of pneumatic separating significantly, greatly increases metal recovery rate.
Description of drawings
Fig. 1 is discarded circuit board hydrothermal treatment device structural representation.Among the figure: 1-gas cylinder, 2-gas flow controller, 3-pressure monitor, 4-hydrothermal reaction kettle, 5-stainless steel material basket, the 6-heat-insulation layer, 7-heating rod, 8-temperature controller, 9-gas purifier, 10-aspiration pump, the 11-oil-water separation tank, 12-acid neutralization chamber, 13-pyrolysis oil accumulator tank, 14-lautertuns.
The specific embodiment
After below in conjunction with accompanying drawing and example discarded circuit board hydrothermal process still of the present utility model further being described in; but can not be interpreted as it is restriction to the utility model protection domain; some nonessential improvement and adjustment that the person skilled in art makes according to above-mentioned content of the present utility model still belong to protection domain of the present utility model.
A kind of discarded circuit board hydrothermal modification involved in the present invention treatment facility that dissociates is made of five parts, is respectively: heating and temperature control system, atmosphere control system, pressure monitoring system, flue gas purification system and water-oil separating reclaiming system.It is characterized in that kettle (4) is for having vertical tubular reactor, the kettle outside is provided with heat-insulation layer (6) to reduce energy loss.Inner wall of kettle is inlaid with many group high-temperature heating rods (7), and by heating and temperature control system (8) control heating rate and temperature retention time.In still, be provided with stainless steel material basket (5), in order to hold discarded circuit board.Be provided with an atmosphere control system at the kettle top, comprise gas flow controller (2) and gas cylinder (1), according to the difference of actual treatment condition, can conveniently adjust the atmosphere (between nitrogen atmosphere and air atmosphere, selecting) in the kettle.After hydrothermal treatment consists was complete, flue gas entered into flue gas purification system (9) under the effect of aspiration pump, and flue gas purification system is provided with filtrating smoke dust net and waste gas purification filtrate, in order to the flue gas in the filtering gas or peculiar smell.Aspiration pump (10) links to each other with gas purge system (9), in order to provide gas flow driving force.Reactor is provided with pipeline by the bottom and is connected with oil-water separation tank (11), makes the profit standing demix by Action of Gravity Field.Oil phase is transported to (13) in the pyrolysis oil accumulator tank, and water then is transported to first sour neutralization chamber (12) and adds an amount of alkali salt neutralisation treatment, is reusable edible after then being transported to lautertuns (14) and processing.Above-mentioned heater and temperature control equipment, its temperature control precision is in ± 1 ℃ of scope.
Embodiment 1: wiring board hydrothermal treatment consists under the air atmosphere
As shown in Figure 1, the discarded circuit board of removing the surface element device is placed in the stainless steel material basket (5) adds simultaneously certain water gaging.Then close still door and unlatching heating and temperature control system (8) to the kettle heating, the holding temperature scope is between 250 ℃ ± 5 ℃, and temperature retention time is 1 hour.Wiring board with this understanding bending strength loss late is 94.2%, and the weight slip is 10.8%.Insulating process makes kettle (4) naturally cool to room temperature after finishing, and opens aspiration pump (10) and purifies residual gas with foreign flavor in the still.Utilizing subsequently suction pump that water in the still and cracked oil are pumped to oil-water separation tank (11) in the lump leaves standstill.Oil phase is transported to (13) in the pyrolysis oil accumulator tank, and water then is transported to first sour neutralization chamber (12) and adds an amount of alkali salt neutralisation treatment, is reusable edible after then being transported to lautertuns (14) and processing.Wiring board with modification takes out oven dry subsequently, after just broken, put into crusher in crushing, the broken time is 2 minutes, metal partly is graininess or sheet after broken, be gathered in the disintegrating machine bottom under Action of Gravity Field, the glass fabric of epoxy resin cure then is dispersed as flocculence, covers above the metallic particles.This moment, metal and nonmetallic degree of dissociation reached 96%.Utilize at last selection by winnowing that different component is efficiently separated recovery, the grade of copper and the rate of recovery are respectively 90.6% and 98.7%.Non-metallic part after the sorting can further be processed, and obtains clean glass fibre.
Embodiment 2: wiring board hydrothermal treatment consists under the nitrogen atmosphere
As shown in Figure 1, the discarded circuit board of removing the surface element device is placed in the stainless steel material basket (5) adds simultaneously certain water gaging.Open atmosphere control system (1,2) inflated with nitrogen in the still, then open heating and with temperature control system (8) kettle (4) is heated.The holding temperature scope is between 400 ℃ ± 5 ℃, and temperature retention time is 0.5 hour.Wiring board with this understanding bending strength loss late is 99.4%.The weight slip is 30.2%.Insulating process makes kettle naturally cool to room temperature after finishing, and opens aspiration pump (10) and purifies residual gas with foreign flavor in the still.Utilizing subsequently suction pump that water in the still and cracked oil are pumped to oil-water separation tank (11) in the lump leaves standstill.Oil phase is transported to (13) in the pyrolysis oil accumulator tank, and water then is transported to first sour neutralization chamber (12) and adds the appropriate bases neutralisation treatment, is reusable edible after then being transported to lautertuns (14) and processing.Wiring board with modification takes out oven dry at last, after just broken, puts into crusher in crushing, the broken time is 0.5 minute, metal partly is graininess or sheet after broken, and the glass fabric behind the removal epoxy resin then is fractured into thread, and metal and nonmetallic degree of dissociation reach 100%.Utilize at last selection by winnowing or screening different component efficiently can be separated recovery, the grade of copper and the rate of recovery are respectively 96.7% and 98.1%.
Claims (1)
1. discarded circuit board hydrothermal treatment device, it is characterized in that: device mainly is made of five parts, is respectively heating and temperature control system, the atmosphere control system, the pressure monitoring system, flue gas purification system and water-oil separating reclaiming system, specifically comprise (1) gas cylinder, (2) gas flow controller, (3) pressure monitor, (4) hydrothermal reaction kettle, (5) stainless steel material basket, (6) heat-insulation layer, (7) heating rod, (8) temperature controller, (9) gas purifier, (10) aspiration pump, (11) oil-water separation tank, (12) sour neutralization chamber, (13) pyrolysis oil accumulator tank, (14) lautertuns; Kettle (4) is vertical tubular reactor, the kettle outside is provided with heat-insulation layer (6) to reduce energy loss, inner wall of kettle is inlaid with 8 groups of high-temperature heating rods (7), by temperature control system (8) control heating rate and temperature retention time, in still, be provided with stainless steel material basket (5), in order to hold discarded circuit board, be provided with an atmosphere control system at the kettle top, comprise gas flow controller (2) and gas cylinder (1), difference according to the actual treatment condition, can conveniently adjust the atmosphere in the kettle, it is selected between nitrogen atmosphere and air atmosphere, after hydrothermal treatment consists is complete, flue gas enters into flue gas purification system (9) under the effect of aspiration pump, flue gas purification system is provided with filtrating smoke dust net and waste gas purification filtrate, in order to the flue gas in the filtering gas or peculiar smell, aspiration pump (10) links to each other with gas purge system (9), in order to the driving force of gas flow to be provided, reactor is provided with pipeline by the bottom and is connected with oil-water separation tank (11), make the profit standing demix by Action of Gravity Field, oil phase is transported to (13) in the pyrolysis oil accumulator tank, water then is transported to first sour neutralization chamber (12) and adds an amount of alkali salt neutralisation treatment, is reusable edible after then being transported to lautertuns (14) and processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220279814XU CN202725605U (en) | 2012-06-14 | 2012-06-14 | Hydrothermal treatment device for discarded printed circuit boards |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220279814XU CN202725605U (en) | 2012-06-14 | 2012-06-14 | Hydrothermal treatment device for discarded printed circuit boards |
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| Publication Number | Publication Date |
|---|---|
| CN202725605U true CN202725605U (en) | 2013-02-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220279814XU Expired - Fee Related CN202725605U (en) | 2012-06-14 | 2012-06-14 | Hydrothermal treatment device for discarded printed circuit boards |
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| Country | Link |
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| CN (1) | CN202725605U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106008595A (en) * | 2016-06-03 | 2016-10-12 | 福建工程学院 | Method and device for rapid recovery of triphenyl phosphate from waste circuit board |
-
2012
- 2012-06-14 CN CN201220279814XU patent/CN202725605U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106008595A (en) * | 2016-06-03 | 2016-10-12 | 福建工程学院 | Method and device for rapid recovery of triphenyl phosphate from waste circuit board |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130213 Termination date: 20140614 |
|
| EXPY | Termination of patent right or utility model |