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Resourceful treatment method of waste thin film transistor liquid crystal monitor

A liquid crystal display and processing method technology, applied in the field of waste thin film transistor liquid crystal display resource processing, can solve the problems of low recovery efficiency, high equipment investment and operation cost, and difficulty in meeting environmental harmless management, and achieve high recovery rate and efficient operation. low cost effect

Inactive Publication Date: 2010-04-07
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, my country's existing original treatment technology based on manual dismantling and simple dismantling treatment equipment are obviously difficult to meet the needs of its environmentally sound management; developed countries generally use multi-stage crushing and sorting methods, but these methods have equipment investment and operation Disadvantages of high cost and low recycling efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] A method for recycling waste thin film transistor liquid crystal displays, specifically comprising the following steps:

[0013] 1. Send the LCD panel into the semi-sealed dismantling table to remove the mercury-containing fluorescent tube: put the 15-inch LCD display in the semi-sealed dismantling table, connect the exhaust pipe to the semi-sealed dismantling table to form a negative pressure, and the wind speed is: 0.3m / s, the exhaust pipe passes through the sulfur-loaded activated carbon device to prevent the escape of mercury vapor caused by the accidental rupture of the fluorescent tube; since the density of mercury vapor is higher than that of air, in order to prevent possible leakage of mercury vapor from depositing on the operating table of the semi-closed dismantling station, Design downward suction outlets around the operating table, arranged in a grid pattern, and suck air at the same time as the upper suction pipe; Qualified processing units conduct process...

Embodiment 2

[0022] A method for recycling waste thin film transistor liquid crystal displays, specifically comprising the following steps:

[0023] 1. Put the LCD panel into the semi-sealed dismantling table and remove the mercury-containing fluorescent tube: put the 17-inch LCD display in the semi-sealed dismantling table, and connect the exhaust pipe to the semi-sealed dismantling table to form a negative pressure, and the wind speed is: 0.4m / s, the exhaust pipe passes through the sulfur-loaded activated carbon device to prevent the escape of mercury vapor caused by the accidental rupture of the fluorescent tube; since the density of mercury vapor is higher than that of air, in order to prevent possible leakage of mercury vapor from depositing on the operating table of the semi-closed dismantling station, Design downward suction outlets around the operating table, arranged in a grid pattern, and suck air at the same time as the upper suction pipe; Qualified processing units conduct pro...

Embodiment 3

[0032] A method for recycling waste thin film transistor liquid crystal displays, specifically comprising the following steps:

[0033] 1. Put the LCD panel into the semi-sealed dismantling table and remove the mercury-containing fluorescent tube: put the 21-inch LCD display in the semi-sealed dismantling table, and connect the exhaust pipe to the semi-sealed dismantling table to form a negative pressure, and the wind speed is: 0.6m / s, the exhaust pipe passes through the sulfur-loaded activated carbon device to prevent the escape of mercury vapor caused by the accidental rupture of the fluorescent tube; since the density of mercury vapor is higher than that of air, in order to prevent possible leakage of mercury vapor from depositing on the operating table of the semi-closed dismantling station, Design downward suction outlets around the operating table, arranged in a grid pattern, and suck air at the same time as the upper suction pipe; Qualified processing units conduct pro...

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PUM

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Abstract

The invention relates to a resourceful treatment method of waste thin film transistor liquid crystal monitors. The method comprises the following steps: sending liquid crystal display panels in a semi-sealed disassembly table to disassemble and remove mercury-containing fluorescent tubes so as to classify and separately recycle metal materials, plastics and glass and reach the aim of recycling resources; at the same time separating mercury-containing fluorescent tubes, organic polarizing film and liquid crystal and separately collecting and processing so as to realize the harmless and safe disposal of hazardous substances. The invention can be widely used for the resourceful recovery treatment of TFT-LCD computer monitors, LCD TVs and other liquid crystal products with similar structure and functions and is characterized by low operating cost and high recovery rate.

Description

technical field [0001] The invention relates to a method for treating waste resources, in particular to a method for recycling waste thin film transistor liquid crystal displays. Background technique [0002] Thin Film Transistor-liquid crystal display (TFT-LCD for short) is widely used in the display industry. In 2008, China's liquid crystal display production has surpassed the traditional cathode ray tube display (Cathode RayTube, referred to as CRT). As its service life (generally, 3 to 5 years) approaches, a large number of scrap LCD products will also be produced. If not treated properly, the toxic and harmful substances in it, such as mercury in the backlight tube, will have an impact on the environment and human health. On the other hand, liquid crystal displays contain various recyclable materials such as substrate glass, plastic resin, indium, etc. Therefore, adopting an appropriate process to treat waste liquid crystal displays is beneficial to the recycling of ...

Claims

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Application Information

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IPC IPC(8): B09B3/00
CPCY02W30/82
Inventor 李金惠段华波高松
Owner TSINGHUA UNIV
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