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Microwave pyrolysis-based decommissioned photovoltaic module efficient thermal stratification system and microwave pyrolysis-based decommissioned photovoltaic module efficient thermal stratification method

A photovoltaic module and thermal stratification technology, applied in chemical instruments and methods, transportation and packaging, solid waste removal, etc., can solve problems such as glass plates and battery sheets are easily broken, and achieve clean and efficient thermal stratification, high-efficiency thermal Layering, avoiding cracking effect

Pending Publication Date: 2022-04-22
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention solves the above-mentioned problems existing in the prior art. The purpose of the present invention is to provide a high-efficiency thermal stratification system and method for decommissioned photovoltaic modules based on microwave pyrolysis. field, so that the photovoltaic modules are heated evenly, solve the problem that glass plates and cells are easily broken, and efficiently disassemble and delaminate

Method used

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  • Microwave pyrolysis-based decommissioned photovoltaic module efficient thermal stratification system and microwave pyrolysis-based decommissioned photovoltaic module efficient thermal stratification method

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Effect test

Embodiment 1

[0030] Such as figure 1 As shown, the crystalline silicon photovoltaic module with the junction box and aluminum frame disassembled is placed in the microwave pyrolysis furnace of this system, nitrogen gas is introduced into the furnace cavity, and three microwave generators are respectively set at 150°C and 350°C respectively. ℃ and 550 ℃, adjust the residence time of the core components in the furnace cavity to 30min, to obtain a complete glass plate and battery sheet, the yield of pyrolysis residue is about 10.56%.

[0031] At present, the commonly used physical crushing method needs to crush photovoltaic modules, and only metal and silicon wafer particles can be recovered, and complete glass plates and cells cannot be obtained, and the recovery rate is only about 70%.

Embodiment 2

[0033] Such as figure 1 As shown, the crystalline silicon photovoltaic module with the junction box and aluminum frame disassembled is placed in the microwave pyrolysis furnace of this system, nitrogen gas is introduced into the furnace cavity, and three microwave generators are respectively set at temperatures of 200 °C and 400 °C. ℃ and 600 ℃, adjust the residence time of the core components in the furnace cavity to 25min, to obtain a complete glass plate and battery sheet, the yield of pyrolysis residue is about 8.34%.

[0034] At present, the commonly used physical crushing method needs to crush photovoltaic modules, and only metal and silicon wafer particles can be recovered, and complete glass plates and cells cannot be obtained, and the recovery rate is only about 70%.

Embodiment 3

[0036] Such as figure 1 As shown, the crystalline silicon photovoltaic module with the junction box and aluminum frame disassembled is placed in the microwave pyrolysis furnace in this system, nitrogen gas is introduced into the furnace cavity, and three microwave generators are respectively set at a temperature of 100°C, At 300°C and 650°C, the residence time of the core components in the furnace chamber was adjusted to 20 minutes to obtain complete glass plates and battery sheets, and the yield of pyrolysis residue was about 7.02%.

[0037] At present, the commonly used physical crushing method needs to crush photovoltaic modules, and only metal and silicon wafer particles can be recovered, and complete glass plates and cells cannot be obtained, and the recovery rate is only about 70%.

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Abstract

The invention discloses a microwave pyrolysis-based decommissioned photovoltaic module high-efficiency thermal stratification system and a microwave pyrolysis-based decommissioned photovoltaic module high-efficiency thermal stratification method. The system comprises an automatic disassembling section, a transmission section and a pyrolysis section, the automatic disassembling section comprises a mechanical arm and an automatic cutting table, the transmission section comprises a transmission section chain plate and a transmission section driving device, after an aluminum outer frame and a junction box of a photovoltaic module are disassembled through the automatic cutting table, a core module is obtained, the mechanical arm drags the core module to the transmission section chain plate in a directional mode, and the pyrolysis section drives the transmission section chain plate to rotate. The pyrolysis section comprises a pyrolysis furnace, a pyrolysis section driving device and a pyrolysis section chain plate, materials of the pyrolysis furnace are conveyed by the pyrolysis section chain plate, the core assembly is conveyed to the pyrolysis section chain plate from the conveying section chain plate, and the pyrolysis section chain plate drives the core assembly to be conveyed in a furnace cavity of the pyrolysis furnace through transmission of the pyrolysis section driving device. According to the invention, a uniform thermal field is provided in the pyrolysis process of the photovoltaic module, so that the photovoltaic module is uniformly heated, the problem that a glass plate and a battery piece are easy to break is solved, and efficient disassembly and layering are realized.

Description

technical field [0001] The present invention relates to the technical field of thermal stratification of photovoltaic modules, in particular to a high-efficiency thermal stratification system and method for decommissioned photovoltaic modules based on microwave pyrolysis. Background technique [0002] Under the global energy shortage situation, solar energy, as a clean energy source, has achieved unprecedented development in recent years, and the installed capacity of photovoltaic modules has increased year by year. By 2020, the country's cumulative installed capacity of photovoltaic modules will reach 250GW. Since photovoltaic modules have a lifespan of 25 to 30 years, the first generation of photovoltaic modules at the end of the 20th century has entered the scrapping stage. By 2020, retired photovoltaic modules will reach 1,000t, and by 2038, it will reach 1,957,099t. If recycling cannot be carried out reasonably and efficiently, it will lead to serious environmental pol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09B3/35B09B3/40B09B5/00B09B101/16
CPCB09B5/00Y02W30/20Y02W30/82
Inventor 袁浩然范洪刚顾菁王亚琢吴玉锋陈勇
Owner GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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