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

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...

AI Technical Summary

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, but these methods will inevitably produce waste printed circuit boards that are not heated properly. Problems such as uniformity, low recovery rate of electronic components, and secondary pollution

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