摘要
以煤焦油蒸馏所得馏分为萃取溶剂,对煤在微波辅助条件下的萃取过程进行研究,主要考察了不同溶煤比和微波辐射时间等因素对萃取率的影响.结果表明,当溶煤比为3∶1且微波辐射为25 min时的萃取率最高,可以达到25.51%,有望为低温煤焦油的合理利用提出一种新途径.萃取残煤的FT-IR和SEM分析检测表明,萃取后残煤样的H/C降低,但煤的大分子结构没有受到破坏.
Using coal tar distillates as solvent,coal microwave-assisted extraction was investigated in this paper.On the basis of experiment,the effect of solvent/coal ratio,microwave radiate time on the extraction yield was discussed.The liquid yield can reach up to 25.51% at the optimal extraction conditions with solvent/coal ratio of 3∶1 and radiating time of 20 min,which implies a new utilization way for low carbonization coal tar.Dry ash-free basis coal and its residues were examined with FT-IR and SEM,which indicated that residual-coal＇s（H/C） is decreased and the macromolecular network of coal is not ruined after extraction.
出处
《煤炭转化》
CAS
CSCD
北大核心
2011年第3期54-56,共3页
Coal Conversion
基金
国家自然科学基金资助项目(40472082)
