CN102284471A - Method for automatically dismantling and recovering waste printed circuit board by using industrial exhaust heat - Google Patents
Method for automatically dismantling and recovering waste printed circuit board by using industrial exhaust heat Download PDFInfo
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- CN102284471A CN102284471A CN2011102336564A CN201110233656A CN102284471A CN 102284471 A CN102284471 A CN 102284471A CN 2011102336564 A CN2011102336564 A CN 2011102336564A CN 201110233656 A CN201110233656 A CN 201110233656A CN 102284471 A CN102284471 A CN 102284471A
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- printed circuit
- superheated steam
- circuit boards
- exhaust heat
- 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 method for automatically dismantling and recovering electronic components on a waste printed circuit board by using industrial exhaust heat, which comprises the steps of: preparing low-grade superheated steam by using industrial exhaust heat through an exhaust heat boiler, and automatically dismantling electronic components on the waste printed circuit board by using the superheated steam as a heat source and power through superheated steam high-temperature pulse injection; properly treating the used superheated steam through a condensing device, and returning to the exhaust heat boiler for recycling; and collecting the gas generated during the operation by using a non-condensable gas collecting device, and properly treating and then directly emitting. According to the invention, the electronic components on the waste printed circuit board are automatically dismantled and recovered by using the superheated steam prepared by using the industrial exhaust gas as the heat source and power, the industrial exhaust heat and the waste printed circuit board are recycled, a low-carbon environmental-protection rule is met, and remarkable social, economic and environmental benefits are obtained.
Description
Technical field
The present invention relates on a kind of discarded printed circuit boards electronic devices and components and dismantle the method for recovery automatically, belong to electronic waste comprehensive utilization of resources technical field.
Background technology
Along with development of science and technology, the particularly fast development of high and new technology, the speed that electronic product updates is constantly accelerated, and circuit board is as part indispensable in the electronic product, and its discarded amount grows with each passing day especially.According to statistics, global electron wastes becomes fastest-rising rubbish with 18% speed increment.Data show that the electron wastes of whole Europe generation at present is 600-800 ten thousand t, and the electron wastes of the U.S. accounts for the 2%-5% of the whole America quantity of refuse.And China from 2004, has at least 5,000,000 computers, 5,000,000 television sets, 5,000 ten thousand mobile phones, 5,000,000 washing machines, 4,000,000 refrigerators to enter the date of retirement every year, and the amount of consequent discarded printed circuit boards is also very huge.
Discarded printed circuit boards on the one hand, contains various heavy and other harmful substances as special solid waste in the discarded printed circuit boards, it is a danger wastes, if deal with improperly, will work the mischief to human and ecological environment; On the other hand, comprising many valuable resources in the discarded printed circuit boards again,, will produce very big economic worth if it is rationally utilized.
According to statistics, be 500,000 hours the normal service life of electronic devices and components, and only be about 20,000 hours the average life that is attached to the electronic devices and components of discarded printed circuit boards.Therefore, how under the prerequisite of not damaging electronic devices and components, automatic dismounting low-cost, that carry out discarded printed circuit boards is on a large scale reclaimed, reduce the pollution of electron wastes simultaneously to environment, for making full use of a large amount of electron wastes, reduce environmental pollution, energy savings and resource and have crucial meaning.
At present, the dismounting to discarded printed circuit boards mainly contains physics, two kinds of methods of chemistry.Physical method as with liquid (as diesel oil) for add thermal medium, directly with the scolder of fusion for adding thermal medium, utilize infrared heating, directly on iron plate, heat, but this several method all can produce discarded printed circuit boards be heated inequality, low, the generation secondary pollution problems of the electronic devices and components rate of recovery inevitably.Therefore, press for a kind of new green environment protection of exploitation automatic method for dismounting of electronic devices and components on the discarded printed circuit boards safely and efficiently.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art, propose a kind of efficient height, the method for pollution is little, energy consumption is low automatic dismounting reclaims electronic devices and components on the discarded printed circuit boards.
Technical scheme of the present invention is:
A kind of industrial exhaust heat that utilizes is dismantled the method that reclaims electronic devices and components on the discarded printed circuit boards automatically, in turn includes the following steps:
A, utilize industrial exhaust heat (as flue gas) to prepare low-grade superheated steam by waste heat boiler;
B, being thermal source and power with the superheated steam again, is the automatic dismounting that the high temperature pulse winding-up realizes the discarded printed circuit boards electronic devices and components by superheated steam; Discarded printed circuit boards is after the superheated steam preheating, through the automatic dismounting of its circuit board electronic devices and components of high temperature pulse winding-up realization, at last by automatic recovery of screening realization classification;
Superheated steam after C, the work is by condensing unit, and condensed water is back to waste heat boiler through suitably handling, and is recycling;
After the gas that produces in D, the running utilizes the incoagulable gas gathering-device to collect, again through suitably handling directly discharging.
Low-grade superheated steam be meant pressure in the 0.3-0.5MPa/ temperature at the superheated steam below 300 ℃.
Preheating is to utilize cryogenic overheating steam that discarded printed circuit boards is heated to 150-200 ℃.
The high temperature pulse winding-up is to pass through jet pipe, utilize hyperthermia and superheating steam that discarded printed circuit boards is heated to a higher temperature (200-300 ℃), carry out the pulse jet of superheated steam simultaneously by nozzle, make described discarded printed circuit boards produce vibration, thereby realize the automatic dismounting of electronic devices and components on the discarded printed circuit boards.
Electronic devices and components are dismantled recovery method automatically on a kind of discarded printed circuit boards electronic devices and components that the present invention proposes, and its advantage is as follows:
1, realizes that so that the method for superheated steam heating, HTHP pulse steam blast is low-cost the efficient separation of electronic devices and components, discarded printed circuit substrate, scolder and classification reclaim.
2, with superheated steam for adding thermal medium, guaranteed being heated evenly of each component of discarded printed circuit boards.
3, in heating process, water vapour can not cause damage to discarded printed circuit boards and electronic devices and components thereof.
4, all processes of the present invention is realized closed circulation, does not produce any secondary pollution in running, and energy consumption is low, economic benefit height, the large-scale recovery of suitable discarded printed circuit boards.
5, superheated steam used in the present invention is that heat energy produces with industrial exhaust heat (as flue gas); not only greatly saved and to have heated the energy that is provided for superheated steam; and reduced the thermal pollution of industrial exhaust heat effectively; really accomplished rationally utilizing again of the energy, this not only meets the policy of national energy-saving and emission-reduction but also positive role has been played in environmental protection.
The present invention is heating source with the superheated steam, and realize that by pulse jet discarded printed circuit boards separates with the vibration of its electronic devices and components with superheated steam, adopt hermetically sealed design, avoided in its electronic devices and components high temperature unloading process of discarded printed circuit boards environment being caused secondary pollution, realized that discarded printed circuit boards separates with the innoxious automatic dismounting of its electronic devices and components.
Description of drawings
Fig. 1 is a process chart of the present invention.
The specific embodiment
Below in conjunction with specific embodiment, the present invention is described in detail.
Be illustrated in figure 1 as process chart of the present invention.
Industrial exhaust heat from flue 1 is used to heat waste heat boiler 2, the superheated steam that waste heat boiler 2 produces is as thermal source and power, by steam operating mode Control Component 3, enter preheating chamber 4, after 4 pairs of discarded printed circuit boards of preheating chamber carried out preheating, superheated steam entered the high temperature pulse detaching chamber, jets through high temperature pulse by nozzle, the electronic devices and components of circuit board are disassembled from circuit board, realize classifying and reclaim automatically in the screening back;
Superheated steam after the work after cooling water purification apparatus 7 enters header tank 8, is back to waste heat boiler 2 by feed pump 11 by condenser 6, and is recycling; After the gas that produces in the running utilizes incoagulable gas gatherer 9 to collect, directly discharging after air cleaning unit 10 is handled again.
Should be understood that, for those of ordinary skills, can be improved according to the above description or conversion, and all these improvement and conversion all should belong to the protection domain of claims of the present invention.
Claims (4)
1. one kind is utilized industrial exhaust heat to dismantle the method that reclaims electronic devices and components on the discarded printed circuit boards automatically, it is characterized in that, in turn includes the following steps:
A, utilize industrial exhaust heat to prepare low-grade superheated steam by waste heat boiler;
B, with the superheated steam thermal source and power again, after preheating chamber carried out preheating to discarded printed circuit boards, superheated steam entered the high temperature pulse detaching chamber, jets through high temperature pulse by nozzle, the electronic devices and components of circuit board are disassembled from circuit board, realize classifying and reclaim automatically in the screening back;
Superheated steam after C, the work after cooling water purification apparatus enters header tank, is back to waste heat boiler by feed pump by condenser, and is recycling;
After the gas that produces in D, the running utilizes the incoagulable gas gatherer to collect, directly discharging after air cleaning unit is handled again.
2. method according to claim 1 is characterized in that, described low-grade superheated steam be meant pressure in 0.3-0.5MPa, temperature at the superheated steam below 300 ℃.
3. method according to claim 1 is characterized in that, described preheating is to utilize superheated steam that discarded printed circuit boards is heated to 150-200 ℃.
4. method according to claim 1, it is characterized in that, described high temperature pulse winding-up is to pass through jet pipe, utilize hyperthermia and superheating steam that discarded printed circuit boards is heated to 200-300 ℃, carry out the pulse jet of superheated steam simultaneously by nozzle, make described discarded printed circuit boards produce vibration, thereby realize the automatic dismounting of electronic devices and components on the discarded printed circuit boards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110233656.4A CN102284471B (en) | 2011-08-16 | 2011-08-16 | Method for automatically dismantling and recovering waste printed circuit board by using industrial exhaust heat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110233656.4A CN102284471B (en) | 2011-08-16 | 2011-08-16 | Method for automatically dismantling and recovering waste printed circuit board by using industrial exhaust heat |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102284471A true CN102284471A (en) | 2011-12-21 |
| CN102284471B CN102284471B (en) | 2014-10-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110233656.4A Expired - Fee Related CN102284471B (en) | 2011-08-16 | 2011-08-16 | Method for automatically dismantling and recovering waste printed circuit board by using industrial exhaust heat |
Country Status (1)
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| CN (1) | CN102284471B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102554387A (en) * | 2012-01-16 | 2012-07-11 | 西南科技大学 | Method for automatically dismounting electronic device on abandoned printed circuit board by using industrial waste gas |
| CN103599921A (en) * | 2013-11-19 | 2014-02-26 | 西南科技大学 | Automatic lossless dismounting recovery method and automatic lossless dismounting recovery device of discarded printed circuit board |
| CN103949316A (en) * | 2014-04-09 | 2014-07-30 | 西南科技大学 | Method for ultrafine grinding and drying of lignite by industrial waste heat and collecting volatile |
| CN104070050A (en) * | 2014-06-18 | 2014-10-01 | 华南理工大学 | Process and device for recycling waste PCB (printed circuit board) by virtue of pressure energy of high pressure natural gas |
| CN106813392A (en) * | 2017-02-22 | 2017-06-09 | 江苏博敏电子有限公司 | A kind of steam-heating system for the heating of PCB horizontal lines |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996023616A1 (en) * | 1995-02-02 | 1996-08-08 | Jacks' Technologies And Industries, Incorporated | Attaching components and reworking circuit boards |
| DE19511041A1 (en) * | 1995-03-25 | 1996-09-26 | Thomas Schwarz | De-soldering of circuit boards with electronic components |
| JPH0983129A (en) * | 1995-09-08 | 1997-03-28 | Ishikawajima Harima Heavy Ind Co Ltd | Apparatus for recycling mounted board |
| WO2002042016A1 (en) * | 2000-11-27 | 2002-05-30 | Maxgain Co Ltd | Method of processing printed board scrap and apparatus for the same |
| CN101014227A (en) * | 2007-02-02 | 2007-08-08 | 清华大学 | Method and equipment for disassembling circuit board using contacted impact |
| CN101417358A (en) * | 2008-11-26 | 2009-04-29 | 四川长虹电器股份有限公司 | Circuit board element dismounting device |
| CN101654343A (en) * | 2008-08-22 | 2010-02-24 | 陈海焱 | Method for preparing microfine mineral admixture by using waste heat of kiln |
| CN102107308A (en) * | 2010-11-26 | 2011-06-29 | 清华大学 | Method for disassembling and modifying printed circuit board based on high temperature steam |
| CN102138370A (en) * | 2008-09-03 | 2011-07-27 | 新热工业株式会社 | Electric appliance disassembling method, and electric appliance disassembling device |
-
2011
- 2011-08-16 CN CN201110233656.4A patent/CN102284471B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996023616A1 (en) * | 1995-02-02 | 1996-08-08 | Jacks' Technologies And Industries, Incorporated | Attaching components and reworking circuit boards |
| DE19511041A1 (en) * | 1995-03-25 | 1996-09-26 | Thomas Schwarz | De-soldering of circuit boards with electronic components |
| JPH0983129A (en) * | 1995-09-08 | 1997-03-28 | Ishikawajima Harima Heavy Ind Co Ltd | Apparatus for recycling mounted board |
| WO2002042016A1 (en) * | 2000-11-27 | 2002-05-30 | Maxgain Co Ltd | Method of processing printed board scrap and apparatus for the same |
| CN101014227A (en) * | 2007-02-02 | 2007-08-08 | 清华大学 | Method and equipment for disassembling circuit board using contacted impact |
| CN101654343A (en) * | 2008-08-22 | 2010-02-24 | 陈海焱 | Method for preparing microfine mineral admixture by using waste heat of kiln |
| CN102138370A (en) * | 2008-09-03 | 2011-07-27 | 新热工业株式会社 | Electric appliance disassembling method, and electric appliance disassembling device |
| CN101417358A (en) * | 2008-11-26 | 2009-04-29 | 四川长虹电器股份有限公司 | Circuit board element dismounting device |
| CN102107308A (en) * | 2010-11-26 | 2011-06-29 | 清华大学 | Method for disassembling and modifying printed circuit board based on high temperature steam |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102554387A (en) * | 2012-01-16 | 2012-07-11 | 西南科技大学 | Method for automatically dismounting electronic device on abandoned printed circuit board by using industrial waste gas |
| CN103599921A (en) * | 2013-11-19 | 2014-02-26 | 西南科技大学 | Automatic lossless dismounting recovery method and automatic lossless dismounting recovery device of discarded printed circuit board |
| CN103949316A (en) * | 2014-04-09 | 2014-07-30 | 西南科技大学 | Method for ultrafine grinding and drying of lignite by industrial waste heat and collecting volatile |
| CN103949316B (en) * | 2014-04-09 | 2016-08-31 | 西南科技大学 | A kind of method utilizing industrial exhaust heat superfine grinding drying brown coal and collection volatile matter |
| CN104070050A (en) * | 2014-06-18 | 2014-10-01 | 华南理工大学 | Process and device for recycling waste PCB (printed circuit board) by virtue of pressure energy of high pressure natural gas |
| CN104070050B (en) * | 2014-06-18 | 2016-01-20 | 华南理工大学 | High-pressure natural gas pressure energy is utilized to reclaim technique and the device of waste and old PCB |
| CN106813392A (en) * | 2017-02-22 | 2017-06-09 | 江苏博敏电子有限公司 | A kind of steam-heating system for the heating of PCB horizontal lines |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102284471B (en) | 2014-10-01 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20111221 Assignee: Mianyang Liuneng Powder Equipment Co., Ltd. Assignor: Southwest University of Science and Technology Contract record no.: 2015510000052 Denomination of invention: Method for automatically dismantling and recovering waste printed circuit board by using industrial exhaust heat Granted publication date: 20141001 License type: Exclusive License Record date: 20150528 |
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| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141001 Termination date: 20150816 |
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| EXPY | Termination of patent right or utility model |