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KI改性凹凸棒管道喷射脱汞实验研究

DOI: 10.13334/j.0258-8013.pcsee.2015.22.013, PP. 5787-5793

Keywords: KI,浸渍改性,凹凸棒,管道喷射,脱汞

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Abstract:

对原始凹凸棒进行KI溶液浸渍改性以制备高效廉价脱汞吸附剂。利用比表面积及孔隙度分析仪、扫描电子显微镜/X射线能谱分析仪以及X-射线衍射对改性前后凹凸棒吸附剂物理化学性质进行表征。在模拟烟气管道喷射实验装置上进行汞吸附脱除实验研究。KI改性使碘有效地负载于凹凸棒表面,形成含碘活性官能团加强汞化学吸附,提高吸附剂汞脱除性能,较高的碘含量有利于汞吸附脱除。经2.5%KI溶液处理后的凹凸棒在空气气氛下具有87.3%的汞脱除率,在模拟烟气中的汞脱除率提高到90.2%。

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