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Comprehensive recovery method using vacuum pyrolysis oil of wastes like waste circuit boards

A waste circuit board, vacuum pyrolysis technology, applied in the direction of electronic waste recycling, waste fuel, plastic recycling, etc., can solve the problems of ineffective recycling and deep resource utilization, and achieve promotion and application, good environmental benefits, and economic benefits Good results

Inactive Publication Date: 2011-09-07
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to deeply utilize waste electronic circuit boards rich in resin polymer components produced in large quantities during the dismantling process of waste electronic appliances, as well as circuit board scraps and defective products produced in large quantities by electronic circuit board manufacturers. Bulk industrial solid waste, to solve the problem that general waste electronic circuit board solid waste treatment methods cannot effectively recycle and deep resource utilization contain a large number of polymer components, and provide a treatment suitable for the application of waste electronic and electrical recycling manufacturers Secondary resource synthesis and deep utilization method of liquid organic matter produced in large quantities in the process of vacuum pyrolysis of solid waste such as waste electronic circuit boards

Method used

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  • Comprehensive recovery method using vacuum pyrolysis oil of wastes like waste circuit boards

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 1. Weigh 1 kg of waste electronic circuit boards.

[0031] 2. Obtain 1 kg of circuit board waste with a particle size of 50-100 mm by shearing and crushing.

[0032] 3. Load the scrap into the metal bin.

[0033] 4. Move the charged metal bin into the vacuum pyrolysis furnace and cover the furnace cover.

[0034] 5. Heating and vacuuming, after about half an hour, the temperature is raised to 400°C, and the vacuum degree is 8000Pa.

[0035] 6. Constant temperature response, the reaction time is one hour, and the temperature is stable at 400°C during the reaction process.

[0036] 7. The pyrolysis gas generated during the reaction is led into the cooler for condensation and collection.

[0037] 8. After the reaction, the vacuum pyrolysis furnace is naturally cooled to 100°C, slowly filled with air to break the vacuum to normal pressure, open the furnace cover, take out the metal box, take out about 700 grams of residue, and release 120 grams of vacuum pyrolysis oil fr...

Embodiment 2

[0044] 1. Weigh 2 kg of waste electronic circuit boards.

[0045] 2. Obtain 2 kg of circuit board waste with a particle size of 50-100 mm by shearing and crushing.

[0046] 3. Load the scrap into the metal bin.

[0047] 4. Move the charged metal bin into the vacuum pyrolysis furnace and cover the furnace cover.

[0048] 5. Heating and vacuuming, after about half an hour, the temperature is raised to 500°C, and the vacuum degree is 10000Pa.

[0049] 6. Respond at constant temperature, the reaction time is one and a half hours, and the temperature is stable at 500°C during the reaction process.

[0050] 7. The pyrolysis gas generated during the reaction is led into the cooler for condensation and collection.

[0051] 8. After the reaction, the vacuum pyrolysis furnace is naturally cooled to 100°C, slowly filled with air to break the vacuum to normal pressure, open the furnace cover, take out the metal box, take out about 1450 grams of residue, and release 320 grams of vacuum py...

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Abstract

The invention discloses a comprehensive recovery method using vacuum pyrolysis oil of wastes like waste circuit boards. The processing raw material adopted by the method comes from various waste electronic circuit boards, defective goods produced in the circuit board production process and liquid organic products produced in the vacuum pyrolysis process of solid waste such as leftover materials and the like, wherein the liquid organism is a multi-component complicated mixture mainly comprising phenol, hydrocarbon and the like; the method is characterized in that: alkaline separation and concentration are carried out on the liquid organisms, chemical products with high added value such as sodium phenate and the like can be prepared by use of phenol components of relatively high content in the liquid organisms obtained by cracking, and resource recovery and deep utilization of high-molecular components in the solid waste such as waste electronic circuit boards and the like can be realized; and moreover, the method has the characteristics of simple and feasible process, short flow, high efficiency and the like, is low in investment, prevents pollution, and can be used in various electronic waste recovery factories.

Description

technical field [0001] The invention belongs to the technical field of comprehensive recovery of secondary resources, and specifically relates to a method for comprehensive recovery of oil by vacuum pyrolysis of waste circuit boards. Background technique [0002] Electronic circuit boards are widely used in the electronic and electrical industry, and are one of the key components of various electronic and electrical appliances, especially in large electronic products such as computers and televisions. On the one hand, a large number of defective products and scraps will be produced in the production process of circuit boards. In addition, after all types of electronic and electrical products are scrapped, a large number of waste circuit boards will be produced in the dismantling process. The effective resource utilization of solid waste will bring certain economic benefits to waste electrical appliances processing units, as well as social and ecological benefits in terms of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09B3/00B29B17/02C10L5/48C10L1/00
CPCY02E50/30Y02W30/62Y02W30/82
Inventor 钟胜
Owner GUANGDONG UNIV OF TECH
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