化工进展 ›› 2012, Vol. 31 ›› Issue (01 ): 57-61.

• 能源加工与技术 • 上一篇    下一篇

微波辅助下热解麦秆制取生物油的分析

闫彩辉1,2,赵 炜1,2,刘 丹1,2,吴晓娜1,2,杨华美1,2,赵 婧2,陶 鑫2,盛 晨1,2   

  1. 1中国科学院可再生能源与天然气水合物重点实验室,广东 广州 5106402中国矿业大学煤炭加工与
    高效洁净利用教育部重点实验室,江苏 徐州
    221008)
  • 出版日期:2012-01-05 发布日期:2012-01-05

Analysis of bio-oil from pyrolysis of wheat stalk under microwave-irradiation

YAN Caihui1,2,ZHAO Wei1,2,LIU Dan1,2,WU Xiaona1,2,YANG Huamei1,2,ZHAO Jing2,TAO Xin2,SHENG Chen1,2   

  1. (1Key Laboratory of Renewable Energy and Gas Hydrate,Chinese Academy of Sciences,Guangzhou 510640,Guangdong, China;2Key Laboratory of Coal Processing and Efficient Utilization(Ministry of Education),China University of Mining and Technology,Xuzhou 221008,Jiangsu,China)
  • Online:2012-01-05 Published:2012-01-05

摘要: 采用微波辅助条件下热解稀硫酸预处理的麦秆制取生物油,产物采用分级萃取进行固液分离,依次分离出了环己烷萃取物、乙酸乙酯萃取物、甲醇萃取物和四氢呋喃萃取物,并用气相色谱/质谱联用仪(GC/MS)分析了各级萃取物。结果表明,本研究制取的生物油中化合物种类较少,有利于生物油中高附加值化学品的分离,其中5,6-二氢吡喃-2-酮在环己烷萃取物中的相对含量为45.0 %,糠醛在生物油总产物中的相对含量为45.6%。此外,生物油中酸的相对含量为16.0%,表明该生物油含酸量高而不易于直接作为燃料油使用。

关键词: 微波辅助, 分级萃取, 麦秆, 生物油

Abstract: In this study,wheat stalk was pretreated using dilute sulphuric acid and then pyrolyzed under microwave irradiation to produce bio-oil. The products were extracted with cyclohexane,ethyl acetate,methanol and tetrahydrofuran sequentially,and the extraction solutions were analyzed with GC/ MS. The results showed that only a small number of bio-oil components existed,so it easy to separate the high added-value chemicals from the bio-oil. The relative content of 5,6-dihydropyran-2-one in the extractive by cyclohexane was 45.0%,and the relative content of furfural in all of the bio-oil was 45.6%. In addition,the relative content of acids in the bio-oil was 16.0 %,which demonstrated that the bio-oil cannot be used as fuel oil directly due to its high acid content.

Key words: microwave-irradiation, sequentially extract, wheat stalk, bio-oil

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