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糠醛渣的热解及制备高吸附性活性炭的研究

发表时间:2014-05-15  浏览量:1624  下载量:661
全部作者: 李鹏飞,杨巧文,陈思,边程琛
作者单位: 中国矿业大学(北京)化学与环境工程学院
摘 要: 通过糠醛渣在N2条件下的热重(thermogravimetric, TG)分析,确定合适的炭化条件:温度450℃,炭化时间1 h. 分析了不同条件下热解气的成分、含量,结果表明:随着热解温度的提高,H2,CO,CH4均有不同程度的提高。并且考察了活化温度、活化时间、水蒸气通量对制得活性炭性能的影响,最终确定活化温度为850℃,活化时间为3.0 h,水蒸气通量为0.90 kg/(h·kg料). 此条件下制得的活性炭的碘吸附值达946.80 mg/g,亚甲基蓝吸附值为296.56 mg/g,活性炭得率为20.30%.
关 键 词: 材料合成与加工工艺;活性炭;糠醛渣;热重分析;热解
Title: Research on pyrolysis of furfural residue and preparation of activated carbon with high absorbing ability
Author: LI Pengfei, YANG Qiaowen, CHEN Si, BIAN Chengchen
Organization: School of Chemical and Environmental Engineering, China University of Mining and Technology
Abstract: In this experiment, suitable carbonization conditions were decided by thermogravimetric (TG) analysis of furfural residue under the condition of nitrogen: temperature is 450℃, carbonization time is 1 h. The composition and content of pyrolysis gas under different conditions were analyzed, with the result that contents of hydrogen, carbon oxide and methane have varying degrees of increase with the increase of pyrolysis temperature. The influence of activation temperature, activation time, and water vapor flux on activated carbon was studied, too. Conclusion can be drawn that the optimal technological condition is that activation temperature is 850℃, activation time is 3.0 h, and water vapor flux is 0.90 kg/(kg furfural residue·h). In this condition, the iodine adsorption value is 946.80 mg/g, the methylene blue adsorption value is 296.56 mg/g, yield is 20.30%.
Key words: material synthesis and processing technology; activated carbon; furfural residue; thermogravimetric analysis; pyrolysis
发表期数: 2014年5月第9期
引用格式: 李鹏飞,杨巧文,陈思,等. 糠醛渣的热解及制备高吸附性活性炭的研究[J]. 中国科技论文在线精品论文,2014,7(9):887-891.
 
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