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Waste crystalline silicon solar cell panel disassembling and recovering method

A solar panel, recycling technology, applied in waste treatment, electronic waste recycling, recycling technology, etc.

Active Publication Date: 2014-08-13
刘景洋
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] by It can be seen from Figure 1 and Table 1 that the occurrence state of each component in the solar panel is relatively simple, and the aluminum frame, copper, glass and other components have a certain recovery value

Method used

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  • Waste crystalline silicon solar cell panel disassembling and recovering method
  • Waste crystalline silicon solar cell panel disassembling and recovering method

Examples

Experimental program
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Effect test

Embodiment 1

[0033] A method for dismantling and recycling waste crystalline silicon solar panels, the method for dismantling and recycling comprising the following steps:

[0034] a. First, put the waste crystalline silicon solar panel into a closed heating device for heating. Heating at high temperature can completely separate the aluminum alloy frame, copper wire, battery sheet and tempered glass. After being incinerated in the incinerator, it is emptied; after the heating equipment is cooled, the aluminum alloy frame, copper wire and tempered glass are sorted out for recycling;

[0035] b. The battery sheet after the heat treatment in the above step a is soaked in lye at room temperature, and after the lye reacts completely with the aluminum paste on the surface of the battery sheet, a dealuminized battery sheet is obtained, and the dealuminized battery sheet is taken out to obtain an aluminum-containing battery sheet. lye;

[0036] c. The aluminum-removed battery sheet after the alka...

Embodiment 2

[0044] This example is an optimized solution based on Example 1, and provides a method for dismantling and recycling waste crystalline silicon solar panels. For the parts in this embodiment that are the same as those in Embodiment 1, please refer to the content disclosed in Embodiment 1 for understanding, and the content disclosed in Embodiment 1 should also be regarded as the content of this embodiment, and will not be described repeatedly here.

[0045] The dismantling and recycling processing method comprises the following steps:

[0046] a. First put the waste crystalline silicon solar panel into the airtight heating equipment (RX3 series - 18KW box-type tempering resistance furnace) for heating. It can be completely separated from the tempered glass, and the plastic parts such as the back panel are turned into ashes through heat treatment, and the exhaust gas is incinerated in the incinerator and then emptied. After the heating equipment cools down, aluminum alloy frames...

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Abstract

The invention discloses a waste crystalline silicon solar cell panel disassembling and recovering method. The method can realize the classification recovery of aluminum frames, toughened glass, silicon wafers, aluminum, silver and copper of waste crystalline silicon solar cell panels. The method adopts a heat treatment technology and a chemical technology combination technique to realize the frame and glass recovery of the waste crystalline silicon solar cell panels, the silicon wafer separation, and the valuable metal and silicon wafer recovery. The method has the advantages of recovery treatment difficulty reduction, tail gas harmlessness realization, secondary pollution control and environment protection; and an alkali dipping treatment and acid dipping treatment solution can be recycled, so the reagent consumption is reduced, the waste acid and waste alkali generation amount is reduced, and the final waste treatment cost is reduced.

Description

technical field [0001] The invention belongs to the field of solid waste treatment, and in particular relates to a method for dismantling waste crystalline silicon solar panels to realize resource classification and recovery. Background technique [0002] Since the 1990s, my country has established small solar energy demonstration projects in some fields. In 2002, the country used photovoltaics to solve the problem of electricity consumption in towns without electricity, and the photovoltaic consumption reached 15.5MWp, which promoted the development of the photovoltaic industry. Since 2005, my country's solar cell production has grown at an annual growth rate of 100%, ranking first in the world for five consecutive years from 2007 to 2011. In 2011, the output of solar cells exceeded 20GW, accounting for more than 50% of the global total output. According to the industrial development plan, the cumulative installed capacity of photovoltaic systems in my country will reach ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09B5/00B09B3/00
CPCY02W30/20Y02W30/82
Inventor 乔琦刘景洋郭玉文董莉
Owner 刘景洋
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