Process for recycling CdTe/Cds thin film solar cell modules
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United States of America Patent
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Jun 3, 2003
Grant Date -
Mar 14, 2002
app pub date -
Aug 24, 2001
filing date -
Sep 11, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Recycling process for CdTe/CdS thin film-solar cell modules in which the modules are mechanically disintegrated into module fragments, the module fragments are exposed to an oxygen-containing atmosphere at a temperature of at least 300.degree. C. causing a pyrolysis of adhesive material contained in the module fragments in form of a hydrocarbon based plastics material and the gaseous decomposition products that are generated during the pyrolysis are discharged, and, afterwards, the module fragments freed from the adhesive means are exposed to a chlorine-containing gas atmosphere at a temperature of more than 400.degree. C. causing an etching process wherein the CdCl.sub.2 and TeCl.sub.4 that are generated in the etching process are made to condense and precipitate by cooling.
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