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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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微波再生对活性炭循环吸附so2的影响
, PP. 890-896
Keywords: 活性炭,微波再生,孔隙结构,表面官能团,so2
Abstract:
？研究了脱硫活性炭的微波再生及其对烟气中so2的循环吸附特性。通过扫描电镜、n2吸附、元素分析、boehm滴定等表征了微波再生对活性炭孔隙结构和表面化学性质的影响，分析了微波再生对活性炭循环吸附烟气中so2的影响规律。结果表明，微波再生是脱硫活性炭再生的有效手段，在合适的再生功率下，经过多次循环吸附/再生后，活性炭仍然保持较高的吸附容量，吸附17次后再生活性炭仍然高于原始活性炭，但同时由于再生过程中存在c与h2so4的反应，活性炭存在明显的烧失现象。初次再生后，活性炭的表面酸性官能团在高温下基本完全分解，碱性官能团含量上升，活性炭的so2吸附容量明显提高；多次吸附/再生循环后，再生反应起到了活化的作用，使活性炭的孔结构变狭长，微孔比表面积和微孔容积呈上升趋势，同时酸性和碱性官能团基本保持稳定，活性炭的so2吸附容量逐渐增加。
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