CN104607438A - Device for non-thermal arc plasma pyrolysis of waste circuit board - Google Patents
Device for non-thermal arc plasma pyrolysis of waste circuit board Download PDFInfo
- Publication number
- CN104607438A CN104607438A CN201410785107.1A CN201410785107A CN104607438A CN 104607438 A CN104607438 A CN 104607438A CN 201410785107 A CN201410785107 A CN 201410785107A CN 104607438 A CN104607438 A CN 104607438A
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- arc plasma
- thermal arc
- flange
- ptfe
- circuit board
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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 invention discloses a device for non-thermal arc plasma pyrolysis of a waste circuit board, the device includes a non-thermal arc plasma reactor and a high-voltage power supply to supply power for the non-thermal arc plasma reactor; the non-thermal arc plasma reactor includes a quartz container, an upper polytetrafluoroethylene flange, a lower polytetrafluoroethylene flange, a tip graphite electrode, a flat bottom graphite electrode and a ceramic crucible; coal is broken, and packed into the non-thermal arc plasma reactor, a carrier gas is introduced, the high-voltage power supply is started, the non-thermal arc plasma reactor starts to work; the high voltage breaks down and ionizes the carrier gas between electrodes to form non thermal arc plasma, pyrolytic reaction of the waste circuit board in the plasma region can be performed under the effects of high energy electrons, free radical active substances and electric field for generating solid carbon slag and hydrogen-rich synthetic gas, and coke and metal parts are separated from the solid carbon slag after magnetic separation. The device can complete the pyrolysis process of the waste circuit board according to the actual requirements, and simple, low-cost and high-efficiency recovery of noble metals can be achieved.
Description
Technical field
The present invention relates to waste treatment technique, particularly relate to a kind of Non-thermal arc plasma pyrolysis and to give up circuit board arrangement.
Background technology
China has entered household electrical appliances and has scrapped peak period, has at least the large electronic products such as about 1,500 ten thousand refrigerators to scrap every year.In Waste ammunition, useless circuit version is as the one of electronic waste, is usually left in the basket to the harm that health and living environment may be formed.In fact, useless circuit version contains the poisonous and harmful substance such as heavy metal, halogen family chemical substance, the not treated direct entered environment of these useless circuit versions, poisonous and harmful substance wherein may contaminated soil, underground water etc., or entered the life of people by plant, animal.Therefore, in the face of useless circuit version problem, be no longer simple " where process ", but will accomplish " how processing ", just can avoid its environmental hazard caused, and realize resource.
Summary of the invention
For solving the problem, the present invention proposes a kind of Non-thermal arc plasma pyrolysis and to give up circuit board arrangement.Non-thermal arc plasma pyrolysis gives up circuit board, poisonous and harmful element various in useless circuit board can be decomposed and convert solid carbon slag and synthesis gas to.
The present invention, for reaching above object, is realized by following technical scheme: provide and propose a kind of Non-thermal arc plasma pyrolysis and to give up circuit board arrangement, the high voltage source comprising Non-thermal arc plasma reactor and power to plasma reactor; Non-thermal arc plasma reactor comprises quartz container, upper polytetrafluoroethylene (PTFE) flange, lower polytetrafluoroethylene (PTFE) flange, stainless steel stent, most advanced and sophisticated graphite electrode, flat graphite electrode, upper copper sealing ring, lower copper sealing ring, ceramic crucible, inlet channel, outlet passageway; Most advanced and sophisticated graphite electrode peace bedstone electrode ink is connected with high voltage source by high-tension bus-bar, most advanced and sophisticated graphite electrode peace bedstone electrode ink is coaxially placed in quartz container, quartz container is combined fixing by upper polytetrafluoroethylene (PTFE) flange, lower polytetrafluoroethylene (PTFE) flange and stainless steel stent, flat graphite electrode is fixed respectively by the upper copper sealing ring be fixed on upper polytetrafluoroethylene (PTFE) flange, and most advanced and sophisticated graphite electrode is fixed by the lower copper sealing ring be fixed on lower polytetrafluoroethylene (PTFE) flange; Inlet channel and upper polytetrafluoroethylene (PTFE) Flange joint, outlet passageway is connected with lower polytetrafluoroethylene (PTFE) flange; The ceramic crucible of bottom opening is placed between most advanced and sophisticated graphite electrode peace bedstone electrode ink, and for loading useless circuit, when device works, the useless circuit in ceramic crucible will be exposed in Non-thermal arc heating region completely.
The give up operation principle of circuit board arrangement of a kind of Non-thermal arc plasma pyrolysis of the present invention is: load in the ceramic crucible of Non-thermal arc plasma reactor afterwards by useless circuit board fragmentation, nitrogen or argon carrier is passed into by inlet channel, start the high voltage source be connected with most advanced and sophisticated graphite electrode peace bedstone electrode ink, plasma reactor is started working; Apply high voltage by the carrier gas breakdown potential between electrode from, form Non-thermal arc plasma, be in the useless circuit board in heating region, under the effect of high energy electron, free radical isoreactivity material and electric field, cracking reaction can be there is, generate solid carbon slag and hydrogen-rich synthetic gas, hydrogen-rich synthetic gas is discharged by outlet passageway; After the operation of several minutes, the useless circuit board in ceramic crucible is completely processed, deenergization, stops passing into carrier gas, and after plasma reactor cooling, take out ceramic crucible, collect solid carbon slag, solid carbon slag isolates coke and metallic member after magnetic separation.
Choose reasonable is wanted at most advanced and sophisticated graphite electrode peace bedstone electrode ink interval, and excessive electrode gap can cause undertension with the carrier gas between breakdown electrode, thus cannot form Non-thermal arc plasma.In addition, because the voltage be applied on the two poles of the earth is very high, therefore reactor operationally, pay special attention to keep off touched electrode, in order to avoid Danger Electric shock risk.In addition, the useless circuit board putting into ceramic crucible does not answer compacting, keep good gas passage, otherwise electrode directly and carrier gas, cannot cannot form Non-thermal arc plasma during energising.It is also to be noted that, do not dismantle reactor at once after reactor quits work, ceramic crucible of taking because reactor work time release a large amount of heat, when just quitting work, the portion temperature such as graphite electrode, quartz container, ceramic crucible are very high, directly touch and easily cause scald.
The present invention can complete useless circuit board cracking process according to actual requirement, simple, low cost, reclaims noble metal efficiently.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
In Fig. 1: 1 Non-thermal arc plasma reactor, 2 high voltage sourcies, 3 quartz containers, polytetrafluoroethylene (PTFE) flange on 4,5 times polytetrafluoroethylene (PTFE) flanges, 6 stainless steel stents, 7 most advanced and sophisticated graphite electrodes, 8 flat graphite electrodes, copper sealing ring on 9,10 times copper sealing rings, 11 ceramic crucibles, 12 Non-thermal arc plasmas, 13 house refuses, 14 inlet channels, 15 outlet passageways.
Detailed description of the invention
Embodiment
As shown in Figure 1, the high voltage source 2 that the present invention includes Non-thermal arc plasma reactor 1 and power to plasma reactor, Non-thermal arc plasma reactor comprises quartz container 3, upper polytetrafluoroethylene (PTFE) flange 4, lower polytetrafluoroethylene (PTFE) flange 5, stainless steel stent 6, most advanced and sophisticated graphite electrode 7, flat graphite electrode 8, upper copper sealing ring 9, lower copper sealing ring 10, ceramic crucible 11, Non-thermal arc plasma 12, house refuse 13, inlet channel 14, outlet passageway 15, most advanced and sophisticated graphite electrode (φ 15mm) peaceful bedstone electrode ink (φ 15mm) is connected with high voltage source (10kV/200mA) by high-tension bus-bar, most advanced and sophisticated graphite electrode peace bedstone electrode ink is coaxially placed in quartz container and (adopts quartz glass tube, long 450mm, internal diameter 30mm) in, electrode gap fixedly remains on 15mm, quartz container is by upper polytetrafluoroethylene (PTFE) flange, lower polytetrafluoroethylene (PTFE) flange and stainless steel stent are combined fixing, flat graphite electrode is fixed respectively by the upper copper sealing ring be fixed on upper polytetrafluoroethylene (PTFE) flange, most advanced and sophisticated graphite electrode is fixed by the lower copper sealing ring be fixed on lower polytetrafluoroethylene (PTFE) flange, inlet channel and upper polytetrafluoroethylene (PTFE) Flange joint, outlet passageway is connected with lower polytetrafluoroethylene (PTFE) flange, the ceramic crucible of bottom opening aperture 9mm is placed between most advanced and sophisticated graphite electrode peace bedstone electrode ink.
Choose useless computer main board for useless circuit board representative, load after useless computer main board is broken into 2-5mm particle in the ceramic crucible of Non-thermal arc plasma reactor, 3-8L/min argon carrier is passed into by inlet channel, start the high voltage source be connected with most advanced and sophisticated graphite electrode peace bedstone electrode ink, plasma reactor is started working; Apply high voltage by the carrier gas breakdown potential between electrode from, form Non-thermal arc plasma, be in the useless circuit board particle in heating region, under the effect of high energy electron, free radical isoreactivity material and electric field, pyrolytic reaction can be there is, generate solid carbon slag and hydrogen-rich synthetic gas, hydrogen-rich synthetic gas is discharged by outlet passageway; After the operation of several 10 minutes, the brown useless circuit board in ceramic crucible is completely processed, deenergization, stops passing into carrier gas, takes out ceramic crucible, collect solid carbon slag after plasma reactor cooling.Experimental result: coke yield about 5%, synthesis gas yield more than 30%, metal yield about 20%.
Claims (1)
1. Non-thermal arc plasma pyrolysis gives up a circuit board arrangement, it is characterized in that comprising: Non-thermal arc plasma reactor and the high voltage source of powering to plasma reactor; Non-thermal arc plasma reactor comprises quartz container, upper polytetrafluoroethylene (PTFE) flange, lower polytetrafluoroethylene (PTFE) flange, stainless steel stent, most advanced and sophisticated graphite electrode, flat graphite electrode, upper copper sealing ring, lower copper sealing ring, ceramic crucible, inlet channel, outlet passageway; Most advanced and sophisticated graphite electrode peace bedstone electrode ink is connected with high voltage source by high-tension bus-bar, most advanced and sophisticated graphite electrode peace bedstone electrode ink is coaxially placed in quartz container, quartz container is combined fixing by upper polytetrafluoroethylene (PTFE) flange, lower polytetrafluoroethylene (PTFE) flange and stainless steel stent, flat graphite electrode is fixed respectively by the upper copper sealing ring be fixed on upper polytetrafluoroethylene (PTFE) flange, and most advanced and sophisticated graphite electrode is fixed by the lower copper sealing ring be fixed on lower polytetrafluoroethylene (PTFE) flange; Inlet channel and upper polytetrafluoroethylene (PTFE) Flange joint, outlet passageway is connected with lower polytetrafluoroethylene (PTFE) flange; The ceramic crucible of bottom opening is placed between most advanced and sophisticated graphite electrode peace bedstone electrode ink, and for loading useless circuit board, when device works, the useless circuit board in ceramic crucible will be exposed in Non-thermal arc heating region completely.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410785107.1A CN104607438A (en) | 2014-12-12 | 2014-12-12 | Device for non-thermal arc plasma pyrolysis of waste circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410785107.1A CN104607438A (en) | 2014-12-12 | 2014-12-12 | Device for non-thermal arc plasma pyrolysis of waste circuit board |
Publications (1)
| Publication Number | Publication Date |
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| CN104607438A true CN104607438A (en) | 2015-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410785107.1A Pending CN104607438A (en) | 2014-12-12 | 2014-12-12 | Device for non-thermal arc plasma pyrolysis of waste circuit board |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0326331A (en) * | 1989-06-21 | 1991-02-04 | Nisshin Steel Co Ltd | Superfine powder production device |
| CN1221967A (en) * | 1997-12-03 | 1999-07-07 | 松下电工株式会社 | Plasma treatment appts. and plasma treatment method |
| CN1315616A (en) * | 2000-03-24 | 2001-10-03 | 国营华北光学仪器厂 | Method and equipment for processing fuel oil of car |
| CN1359848A (en) * | 2000-12-22 | 2002-07-24 | 天津大学 | Ordinary-temp. corona discharge process for preparing carbon nano-tubes |
| CN1597155A (en) * | 2003-09-18 | 2005-03-23 | 中国科学院力学研究所 | Method of treating waste matter using plasma electric arc technology and its device |
| CN102211103A (en) * | 2010-04-07 | 2011-10-12 | 中国科学院过程工程研究所 | Method for pyrolyzing waste circuit board by using arc plasma |
| CN102284472A (en) * | 2011-09-13 | 2011-12-21 | 杭州电子科技大学 | Method for harmlessly recycling and treating circuit boards by means of combining pyrolysis with plasma discharge |
| CN102942950A (en) * | 2012-11-16 | 2013-02-27 | 中科合成油技术有限公司 | Method for updating heavy hydrocarbon to produce light oil and plasma hydrogenation reactor for method |
| CN202877220U (en) * | 2012-11-01 | 2013-04-17 | 常州翔宇资源再生科技有限公司 | Plasma cracking recovery production line for waste circuit boards |
-
2014
- 2014-12-12 CN CN201410785107.1A patent/CN104607438A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0326331A (en) * | 1989-06-21 | 1991-02-04 | Nisshin Steel Co Ltd | Superfine powder production device |
| CN1221967A (en) * | 1997-12-03 | 1999-07-07 | 松下电工株式会社 | Plasma treatment appts. and plasma treatment method |
| CN1315616A (en) * | 2000-03-24 | 2001-10-03 | 国营华北光学仪器厂 | Method and equipment for processing fuel oil of car |
| CN1359848A (en) * | 2000-12-22 | 2002-07-24 | 天津大学 | Ordinary-temp. corona discharge process for preparing carbon nano-tubes |
| CN1597155A (en) * | 2003-09-18 | 2005-03-23 | 中国科学院力学研究所 | Method of treating waste matter using plasma electric arc technology and its device |
| CN102211103A (en) * | 2010-04-07 | 2011-10-12 | 中国科学院过程工程研究所 | Method for pyrolyzing waste circuit board by using arc plasma |
| CN102284472A (en) * | 2011-09-13 | 2011-12-21 | 杭州电子科技大学 | Method for harmlessly recycling and treating circuit boards by means of combining pyrolysis with plasma discharge |
| CN202877220U (en) * | 2012-11-01 | 2013-04-17 | 常州翔宇资源再生科技有限公司 | Plasma cracking recovery production line for waste circuit boards |
| CN102942950A (en) * | 2012-11-16 | 2013-02-27 | 中科合成油技术有限公司 | Method for updating heavy hydrocarbon to produce light oil and plasma hydrogenation reactor for method |
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Application publication date: 20150513 |
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