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Dismantling method of scrapped photovoltaic modules

A technology of photovoltaic modules and frame dismantling machines, applied in waste treatment, electronic waste recycling, solid waste removal, etc., can solve the problems of imperfection and separation, and achieve the effect of simple structure

Active Publication Date: 2021-07-30
CHANGZHOU RUISAI ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0020] Physical Separation: Imperfect, fails to separate individual components

Method used

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  • Dismantling method of scrapped photovoltaic modules

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] The dismantling method of scrapped photovoltaic modules includes the following steps:

[0043] 1) Disassemble the aluminum frame

[0044] The automatic frame dismantling machine is used to completely remove the aluminum frame by increasing the outward expansion of the aluminum frame of the scrapped photovoltaic module;

[0045] 2) Disassemble the junction box

[0046] Use a blade to manually disassemble the junction box;

[0047] 3) Defluorination film

[0048] The fluorine film is located on the outermost layer of the scrapped photovoltaic module backplane. The fluorine film is removed by controlling the pressure and angle of the fluid sprayed from the spray gun; 100kg / cm 2 ; The distance between the nozzle of the spray gun and the target is 0.1 meters, and the angle between the sprayed object and the target is 30°.

[0049] 4) Remove the back panel

[0050] The backboard material is closely combined with the silicon wafer through the EVA glue layer, and the back...

Embodiment 2

[0059] The dismantling method of scrapped photovoltaic modules includes the following steps:

[0060] 1) Disassemble the aluminum frame

[0061] The automatic frame dismantling machine is used to completely remove the aluminum frame by increasing the outward expansion of the aluminum frame of the scrapped photovoltaic module;

[0062] 2) Disassemble the junction box

[0063] Use a blade to manually disassemble the junction box;

[0064] 3) Defluorination film

[0065] The fluorine film is located on the outermost layer of the backplane of the scrapped photovoltaic module. The fluorine film is removed by controlling the pressure and angle of the liquid sprayed from the spray gun; the spray gun sprays sand, and the sand flows out of the spray gun mouth in a flow shape. The spray pressure is 200kg / cm 2 ; The distance between the nozzle of the spray gun and the target is 1.5 meters, and the angle between the sprayed object and the target is 45°.

[0066] 4) Remove the back pa...

Embodiment 3

[0076] The dismantling method of scrapped photovoltaic modules includes the following steps:

[0077] 1) Disassemble the aluminum frame

[0078] The automatic frame dismantling machine is used to completely remove the aluminum frame by increasing the outward expansion of the aluminum frame of the scrapped photovoltaic module;

[0079] 2) Disassemble the junction box

[0080] Use a blade to manually disassemble the junction box;

[0081] 3) Defluorination film

[0082] The fluorine film is located on the outermost layer of the backplane of the scrapped photovoltaic module, and the fluorine film is removed by controlling the pressure and angle of the liquid sprayed from the spray gun; the spray gun sprays sand, which is in the form of mist when it flows out of the spray gun mouth, and the spray pressure is 150kg / cm 2 ; The distance between the nozzle of the spray gun and the target is 1 meter, and the angle between the sprayed object and the target is 35°.

[0083] 4) Remov...

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Abstract

The invention relates to the technical field of environmental protection recycling, in particular to a method for dismantling scrapped photovoltaic modules, comprising the following steps: 1) dismantling the aluminum frame; 2) disassembling the junction box; 3) removing the fluorine film; 4) removing the back plate; 5) Separate the EVA glue layer and the back plate, separate the silicon chip layer, the welding ribbon and the glass; 6) separate the materials separately. The invention has a simple structure, adopting the method is environmentally friendly and economical to disassemble scrapped photovoltaic modules, and the damage rate of aluminum frame and glass is less than 4%; the recovery rate of non-ferrous metals is over 95%, the recovery rate of precious metals is over 90%, and the recovery rate of silicon materials Reach over 90%, the damage rate of the aluminum frame used for thin-film solar cells is less than 3%, and the recovery rate of rare and precious metals reaches over 97%.

Description

technical field [0001] The invention relates to the technical field of environmental protection recycling, in particular to a method for dismantling scrapped photovoltaic modules. Background technique [0002] my country is a big country in the production and application of photovoltaic modules. In 2017 alone, my country produced more than 60GW of photovoltaic modules. According to the conversion of 76,000 tons / GW, the total mass of photovoltaic modules in 2017 alone will exceed 4.56 million tons after they are scrapped. [0003] Most of the materials of photovoltaic modules are recyclable materials. The recycling of photovoltaic modules can save resources, reduce the mining of primary resources and reduce the energy consumption of resource extraction, thereby reducing the impact and damage of the ecological environment. [0004] The composition of photovoltaic modules is 70% of glass (weight ratio, the same below), 18% of aluminum frame, 4% of silicon material, 0.15% of pre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B09B3/00B09B5/00
CPCB09B3/00B09B5/00Y02W30/20Y02W30/82
Inventor 谢嫣琪庄虎梁许忠兴
Owner CHANGZHOU RUISAI ENVIRONMENTAL PROTECTION TECH CO LTD
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