| 垃圾焚烧中吸附剂对Cd、Pb迁移分布的影响 |
| 摘要点击 2814 全文点击 1831 投稿时间：2008-09-10 修订日期：2008-11-15 |
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| 中文关键词 焚烧 迁移分布 吸附 Cd Pb |
| 英文关键词 incineration partitioning adsorption cadmium lead |
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| 中文摘要 |
| 利用管式炉和模拟垃圾，研究了焚烧过程中SiO2、Al2O3、CaO等吸附剂对重金属Cd、Pb迁移分布的影响规律，考察了不同吸附剂添加量、管式炉反应温度和停留时间的影响.结果表明，在各反应温度下，SiO2、Al2O3、CaO均有利于Cd停留在底渣中；对于Pb，SiO2、Al2O3亦使其易于停留在底渣中，而CaO在高温时表现为使Pb更易于向飞灰迁移.上述影响的程度均随着吸附剂添加量的增加而增加.当反应炉温度为850℃时，各吸附剂对于Cd的吸附效果顺序为CaO>Al2O3>SiO2，对Pb的顺序为Al2O3>SiO2>CaO.反应炉温度和停留时间的增加，也都易于使Cd、Pb向飞灰迁移. |
| 英文摘要 |
| An incineration experiment using simulated municipal solid waste (MSW) in the tubular furnace was performed to study the effects of SiO2，Al2O3 and CaO on the partitioning of Cd and Pb under different operating conditions which included adsorbents percentage，furnace temperature and residence time.The results indicated that the increasing of SiO2，Al2O3，CaO concentration were favorable for Cd to partition in the bottom ash.And for Pb，SiO2 and Al2O3 had the same effects.However，the condition with CaO showed an opposite tendency of increasing Pb distribution in fly ash.While all of these adsorbents increasing，the effects were also enhanced.When the temperature of the tubular furnace was 850℃，the adsorption efficiencies of these adsorbents for Cd were in the sequence of CaO>Al2O3>SiO2，and for Pb，Al2O3>SiO2>CaO.In addition，with increasing of tubular furnace temperature and residence time，there would be more Cd and Pb compounds moving to the fly ash. |
