Laser evaporation recovery processing method for film solar cell module

Abstract

The invention discloses a laser evaporation recovery processing method for a film solar cell module. The method comprises the following steps: after removing backplate glass and an electric conductingelectrode of the waste film solar cell module, obtaining a glass substrate with a photovoltaic film layer, using a laser to irradiate the photovoltaic film layer on the glass substrate at short distance until the photovoltaic film layer is totally evaporated to obtain the whole glass substrate, enabling an evaporant of the photovoltaic film layer to enter a solid powder collecting chamber, finally extracting by a hydrometallurgy technology, and realizing comprehensive recovery of a valuable metal in the photovoltaic film layer. The method is very short in a flow of stripping the photovoltaicfilm layer and collecting valuable metal solids in the photovoltaic film layer, and rapid in speed; the recovery rate of the valuable metal is high, the work environment is good, the damage to the glass substrate is small and the recyclability rate is high; and th emethod is capable of completely using an automatic mechanical technology and good working environment, the whole environment friendliness of a product chain is ensured, the material recovery rate and recovering effect of the film solar cell module are improved, and a source utilization ratio is improved.

Description

technical field [0001] The invention relates to a laser evaporation recovery treatment method for thin-film solar cell components, and belongs to the technical field of thin-film solar cell component recycling. Background technique [0002] As traditional energy sources are gradually exhausted and environmental problems are intensifying year by year, new energy sources have gradually become the mainstream of energy strategies in various countries. Among them, the thin-film photovoltaic industry occupies an important position in new energy sources. Thin-film solar cells, which use semiconductor materials as the medium to achieve direct conversion of light and electricity, when sunlight hits the solar panel, without mechanical transmission and polluting by-products, it can directly convert sunlight energy into electrical energy . [0003] At present, in the photovoltaic market, cadmium telluride thin-film solar cells have been widely used in photovoltaic power generation. Ho...

AI Technical Summary

Problems solved by technology

The initial equipment investment of this process is relatively small, and the process is relatively simple, but the working environment is relatively poor

The generated glass slag has little utilization value, and the disposal and piling and environmental protection pressure are relatively high

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