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钙基吸附剂固定床吸附烟气中Hg^0的试验研究 被引量:4

Simulation of Mercury Emission Control by Calcium-based Sorbent Under Fixed-bed Operations
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摘要 在小型模拟燃煤烟气Hg吸附和形态转化试验台上研究了几种钙基吸附剂对模拟烟气中Hg的脱除效果。结果表明:Ca(OH2)对单质汞的吸附主要是物理吸附;CaO对单质汞的吸附则是物理吸附和化学吸附共同作用的结果;SO2和HCl可以通过与钙基吸附剂发生反应提供活性位或者将Hg0氧化成Hg2+来促进对汞的吸附,HCl对汞的促进作用更强;加入高锰酸钾浸渍煅烧改性后,由于化学吸附的发生,钙基类物质的吸附能力有所提高。 A beach-scale experimental set-up was constructed,on which the experiments was conducted to study the ability of several calcium based adsorbents on removing mercury from simulated flue gas.The conclusions are as follows: the adsorption of Ca(OH)2 was mainly controlled by physical mechanisms,therefore,both physisorption and chemiadsorption mechanism existing in CaO situation;SO2 and HCl can promote the adsorption ability of calcium based adsorbents by oxidizing Hg0 to Hg2+ or providing active sites through react with calcium based adsorbents,and the promotion of HCl is stronger than SO2;when impregnated with KMnO4,the adsorption can be enhanced obviously because of the presence of chemiadsorption.
出处 《锅炉技术》 北大核心 2011年第5期65-69,共5页 Boiler Technology
基金 国家重点基础研究发展计划(973计划)资助项目(2006CB200300)
关键词 模拟烟气 钙基 吸附剂 simulated flue gas mercury calcium based adsorbents adsorption
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参考文献9

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