Method for automatic disassembly and recovery of waste printed circuit boards by using industrial waste heat

A printed circuit board and industrial waste heat technology, applied in the field of comprehensive utilization of electronic waste resources, can solve the problems of secondary pollution, uneven heating of waste printed circuit boards, low recovery rate of electronic components, etc., and achieve energy saving, emission reduction and environmental protection , Realize the effect of harmless automatic disassembly and separation, efficient separation and classification recycling

Inactive Publication Date: 2011-12-21
SOUTHWEAT UNIV OF SCI & TECH
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

Physical methods such as using liquid (such as diesel oil) as the heating medium, directly using molten solder as the heating medium, using infrared heating, and directly heating on the iron plate,

Method used

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  • Method for automatic disassembly and recovery of waste printed circuit boards by using industrial waste heat
  • Method for automatic disassembly and recovery of waste printed circuit boards by using industrial waste heat

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Embodiment Construction

[0024] The present invention will be described in detail below in conjunction with specific embodiments.

[0025] Such as figure 1 Shown is the process flow chart of the present invention.

[0026] The industrial waste heat from the flue 1 is used to heat the waste heat boiler 2, and the superheated steam generated by the waste heat boiler 2 is used as a heat source and power, and enters the preheating chamber 4 through the steam condition control component 3, where the waste printed circuit board is After preheating, the superheated steam enters the high-temperature pulse dismantling chamber, and is sprayed by high-temperature pulse through the nozzle to disassemble the electronic components of the circuit board from the circuit board, and realize the classification and automatic recycling after screening;

[0027] The superheated steam after work passes through the condenser 6 and enters the water collection tank 8 through the cooling water purification device 7, and return...

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Abstract

The invention discloses a method for automatically dismantling and recovering electronic components on waste printed circuit boards by using industrial waste heat. It uses industrial waste heat to prepare low-grade superheated steam through the waste heat boiler, and then uses the superheated steam as the heat source and power to realize the automatic disassembly of waste printed circuit board electronic components through high-temperature pulse injection of superheated steam; the superheated steam after work is condensed After the device is properly treated, it is returned to the waste heat boiler for recycling; the gas generated during operation is collected by a non-condensable gas collection device, and then directly discharged after proper treatment. The invention proposes to use the superheated steam prepared by industrial waste heat as the heat source and power to realize the automatic disassembly and recovery of waste printed circuit board electronic components, and at the same time realize the resource utilization of industrial waste heat and waste printed circuit boards, which conforms to the principle of green, low-carbon and environmental protection, and has the advantages of Significant socio-economic and environmental benefits.

Description

technical field [0001] The invention relates to a method for automatically disassembling and recycling electronic components on a waste printed circuit board, and belongs to the technical field of comprehensive utilization of electronic waste resources. Background technique [0002] With the development of science and technology, especially the rapid development of high-tech, the speed of electronic product replacement is accelerating. As an indispensable part of electronic products, the amount of discarded circuit boards is increasing day by day. According to statistics, the world's electronic waste is growing at a rate of 18%, becoming the fastest growing waste. Data show that the current e-waste generated in Europe is 6-8 million tons, and the e-waste in the United States accounts for 2%-5% of the total waste in the United States. In my country, since 2004, at least 5 million computers, 5 million TV sets, 50 million mobile phones, 5 million washing machines, and 4 millio...

Claims

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Application Information

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IPC IPC(8): B09B3/00
CPCY02W30/82
Inventor 陈海焱陈梦君陈俊冬王建波姜鹏飞
Owner SOUTHWEAT UNIV OF SCI & TECH
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