CIESC Journal ›› 2011, Vol. 19 ›› Issue (1): 116-121.

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Properties of Bio-oil from Fast Pyrolysis of Rice Husk

郭秀娟, 王树荣, 王琦, 郭祚刚, 骆仲泱   

  1. State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China
  • 收稿日期:2010-07-05 修回日期:2010-10-13 出版日期:2011-02-28 发布日期:2011-02-28
  • 通讯作者: WANG Shurong, E-mail: srwang@zju.edu.cn
  • 基金资助:
    Supported by the International Science and Technology Cooperation Program of China(2009DFA61050);the National High Technology Research and Development Program of China(2009AA05Z407);the National Natural Science Foundation of China(50676085,90610035)

Properties of Bio-oil from Fast Pyrolysis of Rice Husk

GUO Xiujuan, WANG Shurong, WANG Qi, GUO Zuogang, LUO Zhongyang   

  1. State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China
  • Received:2010-07-05 Revised:2010-10-13 Online:2011-02-28 Published:2011-02-28
  • Supported by:
    Supported by the International Science and Technology Cooperation Program of China(2009DFA61050);the National High Technology Research and Development Program of China(2009AA05Z407);the National Natural Science Foundation of China(50676085,90610035)

摘要: Physicochemical properties of bio-oil obtained from fast pyrolysis of rice husk were studied in the present work.Molecular distillation was used to separate the crude bio-oil into three fractions viz.light fraction,middle fraction and heavy fraction.Their chemical composition was analyzed by gas chromatograph and mass spectrometer(GC-MS).The thermal behavior,including evaporation and decomposition,was investigated using thermogravimetric analyzer coupled with Fourier transform infrared spectrometer(TG-FTIR).The product distribution was significantly affected by contents of cellulose,hemicellulose and lignin.The bio-oil yield was 46.36%(by mass) and the yield of gaseous products was 27%(by mass).The chemicals in the bio-oil included acids,aldehydes,ketones,alcohols,phenols,sugars,etc.The light fraction was mainly composed of acids and compounds with lower boiling point temperature,the middle and heavy fractions were consisted of phenols and levoglucosan.The thermal stability of the bio-oil was determined by the interactions and intersolubility of compounds.It was found that the thermal stability of bio-oil was better than the light fraction,but worse than the middle and heavy fractions.

关键词: biochemical engineering, bio-oil, fast pyrolysis, decomposition, distillation

Abstract: Physicochemical properties of bio-oil obtained from fast pyrolysis of rice husk were studied in the present work.Molecular distillation was used to separate the crude bio-oil into three fractions viz.light fraction,middle fraction and heavy fraction.Their chemical composition was analyzed by gas chromatograph and mass spectrometer(GC-MS).The thermal behavior,including evaporation and decomposition,was investigated using thermogravimetric analyzer coupled with Fourier transform infrared spectrometer(TG-FTIR).The product distribution was significantly affected by contents of cellulose,hemicellulose and lignin.The bio-oil yield was 46.36%(by mass) and the yield of gaseous products was 27%(by mass).The chemicals in the bio-oil included acids,aldehydes,ketones,alcohols,phenols,sugars,etc.The light fraction was mainly composed of acids and compounds with lower boiling point temperature,the middle and heavy fractions were consisted of phenols and levoglucosan.The thermal stability of the bio-oil was determined by the interactions and intersolubility of compounds.It was found that the thermal stability of bio-oil was better than the light fraction,but worse than the middle and heavy fractions.

Key words: biochemical engineering, bio-oil, fast pyrolysis, decomposition, distillation