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A two-stage steel strip vacuum pyrolysis device for waste circuit boards

A waste circuit board, vacuum pyrolysis technology, applied in the field of pyrolysis furnace, can solve the problems of heat waste, difficult separation and recycling of pyrolysis gas, high temperature requirements in the pyrolysis section, and achieve the effect of continuous vacuum pyrolysis

Active Publication Date: 2022-05-03
BEIJING UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There are two problems: under a nitrogen atmosphere, the temperature of the pyrolysis section is high, and subsequent separation and recycling of pyrolysis gas is difficult; the one-stage steel strip has to go through a cycle of heating, cooling, and reheating, resulting in a lot of waste of heat

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  • A two-stage steel strip vacuum pyrolysis device for waste circuit boards
  • A two-stage steel strip vacuum pyrolysis device for waste circuit boards

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Embodiment Construction

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0024] according to Figure 1-2 The shown two-stage vacuum pyrolysis device for waste circuit boards includes a waste circuit board feed hopper 1, and one end of the waste circuit board feed hopper 1 is provided with a solenoid valve-2, and the waste circuit board feed The bucket 1 is connected with the solenoid valve-2 through a pipeline, the outlet of the solenoid valve-2 is provided with a vacuum feeding device 3, the outer surface of the vacuum feeding dev...

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Abstract

A two-stage vacuum pyrolysis device for waste circuit boards, one end of the waste circuit board feed hopper is provided with a solenoid valve 1, the waste circuit board feed hopper is connected to the solenoid valve 1 through a pipeline, and the outlet of the solenoid valve 1 is provided with A vacuum feeding device, the outer surface of the vacuum feeding device is fixedly connected with an automatic control device, the exhaust port of the vacuum feeding device is connected with the vacuum pump through a pipeline, and the outlet of the vacuum feeding device is set There is a solenoid valve two, the outlet end of the solenoid valve two is fixedly installed with a pyrolysis furnace, the outlet of the pyrolysis furnace is provided with a solenoid valve three, and the outlet end of the solenoid valve three is fixedly installed with a vacuum unloading device. An automatic control device 2 is fixedly installed on the top of the vacuum unloading device, the exhaust port of the vacuum unloading device is connected to the vacuum pump 2 through a pipeline, and a discharge hopper is fixedly installed at the outlet of the cooling section. This scheme realizes continuous vacuum pyrolysis, thereby saving a lot of energy.

Description

technical field [0001] The invention relates to the field of pyrolysis furnaces, and more specifically, the invention relates to a two-stage steel strip vacuum pyrolysis device for waste circuit boards. Background technique [0002] Discarded printed circuit boards are the fundamental building blocks of electronics and are found in all electronic products, from personal computers to mobile phones to home appliances. China has now become the world's second largest producer of circuit boards, and the growth rate of waste wire boards exceeds that of any other type of waste. Waste circuit boards are rich in recyclable resources such as metals, plastics, and glass fibers. Therefore, reasonable disposal and resource recovery of discarded circuit boards are important parts of electronic waste recycling. [0003] A lot of research has been done on the treatment methods of electronic waste at home and abroad, and some methods have been applied to industrial production. At present,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23G7/00F23G5/027F23G5/44F23G5/50
CPCF23G7/003F23G5/027F23G5/44F23G5/444F23G5/50
Inventor 潘德安和盛鑫吴玉锋顾一帆李彬王维
Owner BEIJING UNIV OF TECH
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