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Method for harmless heat treatment of waste liquid crystal display

A liquid crystal display, liquid crystal technology, applied in the direction of solid waste removal, etc., to achieve the effects of being conducive to environmental protection, low temperature, and energy saving

Inactive Publication Date: 2010-06-09
郭玉文
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The Chinese patent "Liquid Crystal Display Recycling Treatment Method" (patent application number: 03109487) discloses a segmented heating method for liquid crystals, but there is no indication whether the heated product is safe and harmless
So far, there has been no report on the harmless treatment of waste liquid crystal display liquid crystals

Method used

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  • Method for harmless heat treatment of waste liquid crystal display
  • Method for harmless heat treatment of waste liquid crystal display
  • Method for harmless heat treatment of waste liquid crystal display

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Embodiment 1

[0023] A method for harmless heat treatment of waste liquid crystal displays, in which the glass substrates of waste liquid crystal displays are broken and subjected to thermal decomposition treatment under reducing atmosphere conditions; the organic gases produced by the thermal decomposition are fully decomposed under high temperature conditions Harmless after combustion treatment; recycle the residue generated by the thermal decomposition;

[0024] In the method, the glass substrate containing liquid crystal in the waste liquid crystal display is broken and then thermally decomposed under nitrogen condition; the organic gas generated by the thermal decomposition is fully burned under high temperature condition and then discharged harmlessly; the described Recycling of residues produced by thermal decomposition.

[0025] Such as figure 1 Shown, the step of this harmless heat treatment is:

[0026] A. dismantling the waste liquid crystal display to obtain a glass substrate ...

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Abstract

The invention provides a method for the harmless heat treatment of a waste liquid crystal display, comprising the following steps of: crushing glass substrates containing liquid crystals in the waste liquid crystal display for pyrolysis treatment under a nitrogen condition; sufficiently combusting an organic gas generated by pyrolysis under a high-temperature condition, and then harmlessly discharging; and recovering residues generated by the pyrolysis. In the invention, the poisonous and harmful pyrolytic organic gas generated by the pyrolysis treatment of the waste liquid crystal display isharmfulness and generates CO2 and water after being further sufficiently combusted, can be directly exhausted to atmosphere and is beneficial to environmental protection; the residues generated by the pyrolysis can be recovered, further processed and used for glass recycling and indium recovery; and in addition, the pyrolysis treatment of the waste liquid crystal display has low temperature and is beneficial to saving energy.

Description

Technical field: [0001] The invention relates to a method for harmless heat treatment of waste liquid crystal displays. In the method, glass substrates containing liquid crystals in waste liquid crystal displays are broken and then thermally decomposed under nitrogen conditions; Harmless discharge after full combustion treatment under certain conditions; recycle the residue generated by the thermal decomposition. Background technique: [0002] In recent years, the amount of waste liquid crystal displays scrapped worldwide is increasing. Scrapped liquid crystal displays are disposed of by landfill or incineration according to the traditional solid waste disposal method. From the perspective of resource recycling, this traditional method is not conducive to environmental protection and resource regeneration. [0003] The liquid crystal in the liquid crystal display is sandwiched between two glass substrates. In order to realize the recycling of glass or the recovery of metal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09B3/00
Inventor 郭玉文刘景洋乔琦
Owner 郭玉文
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