With the large-scale application of photovoltaics, retired photovoltaic modules have become a big problem. As an emerging solid waste, although it has good circular economic benefits, it also brings new challenges to the development of the industry. At present, ground photovoltaic systems use a large number of silicon-based silicon solar cells, which can be divided into monocrystalline silicon, polycrystalline silicon, and amorphous silicon solar cells.
If the scrapped photovoltaic modules are not recycled, it will pollute the ecological environment. In addition, the discarded photovoltaic modules still contain valuable components, such as glass, aluminum, semiconductor materials, etc. These materials have broad application prospects in other cutting-edge technology fields, and there is a great demand for recycling photovoltaic modules.
The discarded photovoltaic panels have been piled up for a long time and occupied space, and they need to be disassembled. The discarded photovoltaic panels are generally composed of tempered glass, crystalline silicon solar cells, and wooden boards, and then fixed by metal frames. To disassemble the discarded photovoltaic panels, it is necessary to first remove the iron frame and then separate the tempered glass from the wooden boards, so that Resek can recycle the crystalline silicon solar panels.
Disposal technology:
It mainly relies on physical cutting, hammering, extrusion and grinding to break the solar cells into smaller particles. Then, the particles with different particle sizes are screened and sorted, and the components containing EVA adhesive are heat treated to achieve the purpose of recycling glass, silicon and metal.
The particle size of the particles after crushing by the rotor crusher is 0.08~8.00 mm, and then they are screened using a screen. Components with a particle size of more than 1 mm usually contain EVA, so the components with larger particle sizes need to be heat treated once at 650 ℃. The smaller particle size is generally glass, silicon and metal. Glass is concentrated in the component with a particle size of 0.4~1.0 mm, and the metal component particle size is concentrated in 0.08~0.40 mm.
The photovoltaic panel recycling and disassembly equipment production line promotes the photovoltaic module recycling industry to develop towards scale, green and industrialization
