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微波再生对活性炭循环吸附SO2的影响

张立强 ,  崔琳 ,  王志强 ,  董勇

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引用本文: 张立强, 崔琳, 王志强, 董勇. 微波再生对活性炭循环吸附SO2的影响[J]. 燃料化学学报, 2014, 42(7): 890-896. shu
Citation:  ZHANG Li-qiang, CUI Lin, WANG Zhi-qiang, DONG Yong. Effects of microwave regeneration of activated carbon on its SO2 adsorption[J]. Journal of Fuel Chemistry and Technology, 2014, 42(7): 890-896. shu

微波再生对活性炭循环吸附SO2的影响

    通讯作者: 董勇,男,博士,教授,E-mail:dongy@sdu.edu.cn。
  • 基金项目:

    国家自然科学基金(51206097,51176103)。 (51206097,51176103)

摘要: 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。

English

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  • 收稿日期:  2013-12-27
  • 网络出版日期:  2014-03-31
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