Method and device for recycling waste circuit boards through ion liquid

A technology for waste circuit boards and ionic liquids, applied in chemical instruments and methods, solid waste removal, transportation and packaging, etc., can solve problems such as difficulty in gas volume control, difficulty in implementation, difficulty in regeneration, etc. The effect of subsequent production and resource saving
CN109967487AInactive Publication Date: 2019-07-05KUNMING UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
KUNMING UNIV OF SCI & TECH
Publication Date
2019-07-05
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method and a device for recycling waste circuit boards through ion liquid, and belongs to the technical field of solid waste resource development and utilization. The methodcomprises the steps of prilling the waste circuit boards, then mixing the waste circuit board particles and the magnetic ion liquid, heating the mixture, meanwhile, applying voltage on the mixture through an inert electrode or / and applying a magnetic field on the mixture through a magnetic induction loop, carrying out catalytic pyrolysis on the mixture at 200 to 500 DEG C, collecting a gas-phase product, and condensation recycling; and separating solid-phase and liquid-phase products, recycling a liquid phase, and magnetically separating a solid phase. According to the method and the device for recycling the waste circuit boards through the ion liquid provided by the invention, the ion liquid with a high catalytic performance is utilized, electricity or / and magnetism is / are additionally added for producing an electromagnetic coupling liquid phase catalysis effect on an organic matter base plate, the pyrolysis temperature is low, the micromolecule substance yield is high, a catalyst canbe recycled, and a pyrolysis three-phase product is high-value utilized.
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Description

technical field

[0001] The invention discloses a method and a device for ionic liquid catalytic pyrolysis resource utilization of waste circuit boards, belonging to the technical field of solid waste resource utilization. Background technique

[0002] The circuit board is the foundation of the electronics industry. At present, the electronic waste in my country is growing at a rate of no less than 18% per year. Because the circuit board is the most widely used electronic component, it is the main component especially in computers and communication equipment. , Therefore, waste circuit boards have become one of the main electronic wastes.

[0003] The existing incineration method to process circuit boards needs to be incinerated in a high-temperature aerobic environment, which is very easy to cause secondary pollution. The chemical method mainly uses chemical leaching, and the demand for external additives is relatively large. The pyrolysis method is to conduct heating distil...

Claims

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