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首页> 外文期刊>Waste management & research >Mercury recovery from cold cathode fluorescent lamps using thermal desorption technology
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Mercury recovery from cold cathode fluorescent lamps using thermal desorption technology

机译：使用热脱附技术从冷阴极荧光灯中回收汞

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摘要

Cold cathode fluorescent lamps (CCFLs) are globally used components of high technology products. A large amount of mercury in waste CCFLs is being recovered by thermal desorption technology in Taiwan. However, the complexity of the samples affects the thermal desorption efficiency and increases costs. This study identifies the mercury release behaviour of amalgam, phosphor and mercury-containing components as well as waste CCFLs by bench scale thermal desorption test. The results show that the mercury was released from amalgam and mercury/fluorescent powder from a real treatment plant at temperatures between 550℃ to 850℃, which is much higher than from cinnabar at 300℃ to 380℃ and that of pure mercury, high pressure mercury lamps, and fluorescent tubes containing mercury/fluorescent-powder at 50℃ to 250℃. In addition, the experiment also showed the mercury release peak of the mercury/fluorescent powders from a real treatment plant occurs at much higher temperatures than that of commercial phosphor at 50℃ to 200℃. Thus, complete separation of the cracked CCFLs is necessary to effectively recover phosphor and mercury at low financial and energy cost.
机译：冷阴极荧光灯（CCFL）是高科技产品的全球使用组件。台湾的热解吸技术正在回收CCFL废料中的大量汞。然而，样品的复杂性影响热解吸效率并增加成本。这项研究通过台式热解吸试验确定了汞齐，磷光体和含汞成分以及废CCFL的汞释放行为。结果表明，在550℃至850℃的温度下，汞从汞合金和实际处理厂的汞/荧光粉中释放出来，远高于在300℃至380℃的朱砂和纯汞，高压下的汞。汞灯和含有汞/荧光粉的荧光灯管在50℃至250℃的温度。此外，实验还表明，实际处理厂中汞/荧光粉的汞释放峰发生在比商业荧光粉在50℃至200℃更高的温度下。因此，为了有效地回收磷和汞，以低财务和能源成本，必须完全分离开裂的CCFL。

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  • 来源
    《Waste management & research》 |2010年第5期|p.455-460|共6页
  • 作者

    T.C. Chang; C.M.Chen; Y.F. Lee; S.J. You;

  • 作者单位

    Institute of Environmental Engineering and Management, National Taipei University of Technology, Taipei, Taiwan, ROC;

    Institute of Environmental Engineering and Management, National Taipei University of Technology, Taipei, Taiwan, ROC;

    Institute of Environmental Engineering and Management, National Taipei University of Technology, Taipei, Taiwan, ROC;

    Department of Bioenvironmental Engineering and R&D Center for Membrane Technology, Chung Yuan Christian University, Chungli 320, Taiwan, ROC;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    cold cathode fluorescent lamps; CCFL; mercury; thermal desorption; recovery;

    机译：冷阴极荧光灯;CCFL;汞;热脱附复苏;

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