CN202207705U - Device of pyrolysis combined plasma discharging harmless recovery processing circuit board - Google Patents
Device of pyrolysis combined plasma discharging harmless recovery processing circuit board Download PDFInfo
- Publication number
- CN202207705U CN202207705U CN2011203412043U CN201120341204U CN202207705U CN 202207705 U CN202207705 U CN 202207705U CN 2011203412043 U CN2011203412043 U CN 2011203412043U CN 201120341204 U CN201120341204 U CN 201120341204U CN 202207705 U CN202207705 U CN 202207705U
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- China
- Prior art keywords
- condensing tower
- circuit board
- pyrolysis
- discharge
- arc chamber
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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 relates to a device of a pyrogenic combined plasma discharging harmless recovery processing circuit board. The device provided by the utility model comprises two pulverizers, a pyrolysis furnace, a condensing tower, a discharge chamber, an air humidifier, an alkali liquor tank and a separator, wherein a non-metallic collecting tank and a metal collecting tank are connected with the discharge opening of the separator through pipelines; the discharge opening at the top of the pyrolysis furnace is connected with the feed port of the condensing tower, the liquid phase discharge opening of the condensing tower is connected with a liquid collecting tank, the gas phase discharge opening of the condensing tower is connected with an air inlet of a discharge chamber, the outlet of the air humidifier is connected with the other air inlet of the discharge chamber, the air outlet of the discharge chamber is connected with the alkali liquor tank, and alkali liquor is loaded inside the alkali liquor tank. The device provided by the utility model has a simple and reasonable structure, pollution discharge during a processing procedure can meet standards, harmless treatment is achieved, and effective circulation recover to precious metal resource in the circuit board can be achieved.
Description
Technical field
The utility model belongs to electronic waste recycling technical field, is specifically related to the discharge device of innoxious recycling circuit board of a kind of pyrolysis binding plasma.
Background technology
Electronic waste is a kind of special rubbish, and it has double grading, at first is potential environmental pollution property.Electronic waste itself contains serious toxic, and directly landfill, burning will cause secondary pollution as not dealing carefully with, and its harm has tangible potentiality and chronicity; Secondly, electronic waste can be used as the resource of utilization of the recycling of renewable resources.Along with the develop rapidly of information industry and the extensive utilization of electronic and electrical equipment, electronic waste becomes fastest-rising in the world rubbish.
In various electronic wastes, the recovery of circuit board (pcb board) not only quantitatively occupies huge share, and its metals resources that contains also is huge, also is the most reluctant.The pcb board type is complicated, and kind is various, and the various members of forming wiring board differ bigger with the content of material, but roughly can reduce three major types: 1. metal material: be Cu more than 90%, contain noble metals such as a small amount of Ag, Pd, Au; 2. organic polymer such as halogen-containing epoxy resin; 3. main component is the pottery and the glass fibre of silicon and aluminum oxide.According to the analysis of Sweden Ronnskar smeltery, contained precious metal content is higher than the production-grade of natural crystal far away in the pcb board, and its economic worth that contains is huge.Just because of this, how to handle the PCB that reclaims in the electronic waste effectively, become the research focus that enjoys domestic and international concern at present.
The method of handling to pcb board at present can be divided three classes: physical mechanical facture, burning disposal method, pyrolysismethod are handled.The physical mechanical facture is at present a PCB recycling technology comparatively commonly used, and it mainly is the metal in the Separation and Recovery printed circuit board (PCB), with machinery PCB is crushed to certain particle diameter; Nonmetallic materials and metal material are separated; According to density, the difference of electromagnetic performance is separated both again.The main drawback of physical mechanical facture is its adaptability, because the PCB type is complicated, of a great variety, composition is widely different, and the physical mechanical facture is difficult to adaptable across various PCB.The present application of burning disposal method has extensively but pollutes very serious PCB recycling technology.Burning method is handled the process that the combustible in the discarded object burns with oxygen that is meant in incinerator; Handling process be earlier with discarded object behind Mechanical Crushing to 2～5 cm, send in an incinerator and burn, contained about 40% resin is decomposed destroys; Make organic matter and solids separation; Residual residue is exposed metal and glass fibre, can be sent to metallurgical works after crushed and carry out metal recovery, and organic gas is then sent into the further burn processing of secondary incinerator.Burning method mainly is the metal that is used for reclaiming among the PCB, and its advantage is that technology is simple, weak point consuming time, and that can realize PCB subtracts the appearance decrement.But in removal process, combustibles such as resin are combustion decomposition all, can't reclaim, and because the fire retardant among the PCB contains a large amount of bromines or chlorine and aromatic compound, in burning process, can produce toxic and harmfuls such as bioxin and furans.It is a kind of effective improvement that burning method is handled that pyrolysismethod is handled, and utilizes pyrolysis will discard the PCB thermal cracking, but recyclable fuel vapor and metallics.Different with the burning disposal of circuit board, the vacuum pyrolysis process is under the condition of anaerobic, to carry out, and therefore can restrain the generation of bioxin, furans, and waste gas output is also few, and environmental pollution is little.Though pyrolysismethod has greatly reduced pollutant emission, the low molecular organic pollutant that it discharged still can cause very serious harm to ecological environment and health, is badly in need of that still it is carried out ten minutes and prevents and treats processing effectively.
Summary of the invention
The purpose of the utility model is to the prior art problem, the device that provides a kind of pyrolysis binding plasma to discharge innoxious recycling circuit board.
The utility model comprises first pulverizer, second pulverizer, pyrolysis oven, condensing tower, arc chamber, air humidifier, alkali liquid tank, seperator; Nonmetal feeder is connected with a discharging opening of seperator through pipeline, and the metal feeder is connected with another discharging opening of seperator through pipeline; The top discharge mouth of pyrolysis oven is connected with the feeding mouth of condensing tower; The liquid phase discharging opening of condensing tower is connected with liquid collection trough; The gas phase discharging opening of condensing tower is connected with an air inlet of arc chamber; The outlet of air humidifier is connected with another air inlet of arc chamber, and the gas outlet of arc chamber is connected to alkali liquid tank, and alkali lye is housed in the alkali liquid tank.
Said alkali lye is the aqueous solution of NaOH, potassium hydroxide, calcium hydroxide, calcium oxide or calcium carbonate.
The utility model is simple and reasonable for structure, and the pollutant emission in the processing procedure can reach standard, has realized harmless treatment, and can realize that circulation is reclaimed effectively to the noble metal resource in the circuit board.
Description of drawings
Fig. 1 is the structural representation of the utility model.
The specific embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail.
As shown in Figure 1, the discharge device of innoxious recycling circuit board of a kind of pyrolysis binding plasma comprises first pulverizer 1, second pulverizer 3, pyrolysis oven 2, condensing tower 5, arc chamber 10, air humidifier 9, alkali liquid tank 11, seperator 4.Nonmetal feeder 7 is connected with a discharging opening of seperator 4 through pipeline, and metal feeder 8 is connected with another discharging opening of seperator 4 through pipeline.The top discharge mouth of pyrolysis oven 2 is connected with the feeding mouth of condensing tower 5; The liquid phase discharging opening of condensing tower 5 is connected with liquid collection trough 6; The gas phase discharging opening of condensing tower 5 is connected with an air inlet of arc chamber 10; The outlet of air humidifier 9 is connected with another air inlet of arc chamber 10, and the gas outlet of arc chamber 10 is connected to alkali liquid tank 11, in the alkali liquid tank 11 alkali lye is housed.Alkali lye can be the aqueous solution of NaOH, potassium hydroxide, calcium hydroxide, calcium oxide or calcium carbonate.
Utilize the method for the recycling circuit board of this device to be:
Step (1) is ground into millimetre-sized waste material particle through first pulverizer with the circuit board of processing to be recycled; The waste material particle is sent in the pyrolysis oven, and under 350～900 ℃, the waste material particle produces the organic matter cracking reaction under high temperature and anaerobic condition, and pyrolysis becomes gaseous mixture and furnace bottom solid mixture; Gaseous mixture is the mixture of big molecule gaseous organic pollutant and little molecule gaseous organic pollutant, and the furnace bottom solid mixture is metal and nonmetallic mixture.
The gaseous mixture that step (2) pyrolysis produces feeds condensing tower, and at normal temperatures, the big molecule gaseous organic pollutant condensation after 0.5～2 hour in the gaseous mixture is got off, and forms liquid organic pollution, is collected in the liquid collection trough.
Little molecule gaseous organic pollutant in the gaseous mixture feeds in the arc chamber, and the absolute humidity of bubbling air humidifier generation simultaneously is 5～50g/m
3Humid air, the volume ratio of the humid air of feeding and little molecule gaseous organic pollutant is 1～10:1; The little molecule gaseous organic pollutant in the arc chamber and the mist of humid air are carried out plasma discharge, and every cubic metre of mixed gas plasma discharge capacity is 10～30 kilowatt hours, C in mist
3H
7The volume content of Br stops plasma discharge less than 100ppm; O to the various strong oxidizing properties of humid air discharge generation
3, OH and OOH isoreactivity group, remove little molecule gaseous organic pollutant by the active group degraded, degradation efficiency can reach more than 90%.Plasma discharge can adopt electron beam discharge, corona discharge, dielectric barrier discharge or gliding arc discharge.
Mist after step (3) the arc chamber ionic medium body discharge process feeds alkali lye, and with the halogen absorption of mist, the mist after the processing reaches discharge standard, and directly discharging realizes harmless treatment.
Step (4) is ground into a millimeter grade particles with the furnace bottom solid mixture that pyrolysis produces through second pulverizer, utilizes seperator to carry out metal then and separates with nonmetallic; Separating obtain nonmetal is main with pottery and glass fibre mainly, landfill disposal; Separating the master metal obtain, to want content be copper, accounts for 90%, and contain noble metal such as gold and silver platinum, and being sent to Metallurgical Factory carries out deep processing, obtains noble metals such as gold and silver platinum, realizes metals resources circulation recovery.
Claims (2)
1. the pyrolysis binding plasma device of innoxious recycling circuit board that discharges, it is characterized in that: this device comprises first pulverizer, second pulverizer, pyrolysis oven, condensing tower, arc chamber, air humidifier, alkali liquid tank, seperator; Nonmetal feeder is connected with a discharging opening of seperator through pipeline, and the metal feeder is connected with another discharging opening of seperator through pipeline; The top discharge mouth of pyrolysis oven is connected with the feeding mouth of condensing tower; The liquid phase discharging opening of condensing tower is connected with liquid collection trough; The gas phase discharging opening of condensing tower is connected with an air inlet of arc chamber; The outlet of air humidifier is connected with another air inlet of arc chamber, and the gas outlet of arc chamber is connected to alkali liquid tank, and alkali lye is housed in the alkali liquid tank.
2. the discharge device of innoxious recycling circuit board of a kind of pyrolysis binding plasma as claimed in claim 1, it is characterized in that: said alkali lye is the aqueous solution of NaOH, potassium hydroxide, calcium hydroxide, calcium oxide or calcium carbonate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203412043U CN202207705U (en) | 2011-09-13 | 2011-09-13 | Device of pyrolysis combined plasma discharging harmless recovery processing circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203412043U CN202207705U (en) | 2011-09-13 | 2011-09-13 | Device of pyrolysis combined plasma discharging harmless recovery processing circuit board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202207705U true CN202207705U (en) | 2012-05-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203412043U Expired - Fee Related CN202207705U (en) | 2011-09-13 | 2011-09-13 | Device of pyrolysis combined plasma discharging harmless recovery processing circuit board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202207705U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103785667A (en) * | 2012-11-01 | 2014-05-14 | 常州翔宇资源再生科技有限公司 | Plasma cracking recovery production line of waste circuit board |
| US9850433B2 (en) | 2015-12-31 | 2017-12-26 | Chz Technologies, Llc | Multistage thermolysis method for safe and efficient conversion of E-waste materials |
| US10640711B2 (en) | 2018-06-05 | 2020-05-05 | Chz Technologies, Llc | Multistage thermolysis method for safe and efficient conversion of treated wood waste sources |
-
2011
- 2011-09-13 CN CN2011203412043U patent/CN202207705U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103785667A (en) * | 2012-11-01 | 2014-05-14 | 常州翔宇资源再生科技有限公司 | Plasma cracking recovery production line of waste circuit board |
| 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 |
| 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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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: 20120502 Termination date: 20140913 |
|
| EXPY | Termination of patent right or utility model |