Vacuum pyrolysis characteristics and kinetic analysis of liquid crystal from scrap liquid crystal display panels
作者： Ya Chen , Lingen Zhang , Zhenming Xu
DOI: 10.1016/J.JHAZMAT.2016.12.026
关键词: Liquid-crystal display 、 Scrap 、 Indium 、 Materials science 、 Liquid crystal 、 System pressure 、 Chromatography 、 Activation energy 、 Kinetic analysis 、 Chemical engineering 、 Pyrolysis
摘要: Recycling of waste liquid crystal display (LCD) panels is an urgent task with the rapid expanding LCD market. However, as important composition panels, treatment seldom concerned for its low concentration. In present study, a stripping product enriched and indium gained by mechanical process, in which from 0.3wt.% to 53wt.% 0.02wt.% 7.95wt.%. For product, should be removed before recovery because (a) will hinder recycling; (b) hazardous waste. Hence, effective green approach vacuum pyrolysis proposed treat product. The results are summarized as: (i) From perspective apparent activation energy, advantages expounded according kinetic analysis. (ii) 89.10wt.% converted content residue reaches 14.18wt.% under 773K, 15min system pressure 20Pa. This study provides reliable information further industrial application essential pretreatment next step recycling.
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