Effect of pretreatment temperature of pine on bio-oil characteristics
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摘要: 通过螺旋反应器低温预处理除去松木中的半纤维素和水分,然后用预处理得到的固体残渣来快速热解制生物油。固体残渣的化学组成分析和红外光谱分析表明,由于木质素含量的增加和炭化反应的发生,生物油的产率降低、焦和不可冷凝气的产率增加。随着预处理温度的升高,生物油水分含量减少,高位热值增加,运动黏度增加,密度增加,pH值先升高后降低,固体颗粒物含量增加。核磁共振碳谱分析表明,生物油的脂肪碳含量减少,芳香碳含量增加,芳香度增加。Abstract: Hemicellulose can produce more acid content than cellulose and lignin via pyrolysis. This work reduced the hemicellulose and water content of pine via low temperature pretreatment to improve the bio-oil quality. The chemical composition and FT-IR analysis of pine after pretreatment show that the lignin content increases and the carbonization of pine takes place, which results in the decrease of bio-oil yield and the increase in yield of char and no-condensed gas. With increasing pretreatment temperature, the important characteristics of the bio-oil, such as water content, high heating value, kinematic viscosity, and density all increase, and solid particles content decreases, while pH value decreases after an initial increase. The 13C nuclear magnetic resonance (NMR) show that the aliphatic carbon of bio-oil decreases, while the aromatic and the aromaticity increases.
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Key words:
- pine /
- low temperature pretreatment /
- bio-oil
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BRIDGWATER A V, MEIER D, RADLEIN D. An overview of fast pyrolysis of biomass[J]. Org Geochem, 1999, 30(12):1479-1493. 王丽红, 柏雪源, 易维明, 孔凡霞, 李永军, 何芳, 李志合. 玉米秸秆热解生物油特性的研究[J]. 农业工程学报, 2006, 22(3):108-111. (WANG Li-hong, BAI Xue-yuan, YI Wei-ming, KONG Fan-xia, LI Yong-jun, HE Fang, LI Zhi-he. Characteristics of bio-oil from plasma heated fluidized bed pyrolysis of corn stalk[J]. Transactions of the Chinese Society of Agricultural Engineering, 2006, 22(3):108-111.) 朱锡锋, 陆强, 郑冀鲁, 郭庆祥, 朱清时. 生物质热解与生物油的特性研究[J]. 太阳能学报, 2006, 27(12):1285-1289. (ZHU Xi-feng, LU Qiang, ZHENG Ji-lu, GUO Qing-xiang, ZHU Qing-shi. Research on biomass pyrolysis and bio-oil characteristics[J].Acta Energiae Solaris Sinica, 2006, 27(12):1285-1289.) 王树荣, 骆仲泱, 谭洪, 洪军, 董良杰, 方梦祥, 岑可法. 生物质热裂解生物油特性的分析研究[J]. 工程热物理学报, 2004, 25(6):1049-1052. (WANG Shu-rong, LUO Zhong-yang, TAN Hong, HONG Jun, DONG Liang-jie, FANG Meng-xiang, CEN Ke-fa. The analysis of characteristics of bio-oil produced from biomass by flash pyrolysis[J]. Journal of Engineering Thermophysics, 2004, 25(6):1049-1052.) CZERNIK S, BRIDGWATER A V. Overview of applications of biomass fast pyrolysis oil[J]. Energy Fuels, 2004, 18(2):590-598. LU Q, LI W-Z, ZHU X-F. Overview of fuel properties of biomass fast pyrolysis oils[J]. Energy Convers Manage, 2009, 50(5):1376-1383. ZHANG Q, CHANG J, WANG T, XU Y. Review of biomass pyrolysis oil properties and upgrading research[J]. Energy Convers Manage, 2007, 48(1):87-92. HASSAN E B M, STEELE P H, INGRAM L. Characterization of fast pyrolysis bio-oils produced from pretreated pine wood[J]. Appl Biochem Biotechnol, 2009, 154(1/3):182-192. BROWN ROBERT C, RADLEIN D, PISKORZ J. Pretreatment processes to increase pyrolytic yield of levoglucosan from herbaceous feedstocks//Chemicals and Materials from Renewable Resources. Washington, DC:American Chemical Society, 2001:123-132. 王树荣, 谭洪, 骆仲泱, 王乐,岑可法. 木聚糖快速热解试验研究[J]. 浙江大学学报(工学版), 2006, 40(3):419-423. (WANG Shu-rong, TAN Hong, LUO Zhong-yang, WANG Le, CEN Ke-fa.Experimental research on rapid pyrolysis of xylan[J].Journal of Zhejiang University (Engineering Science), 2006, 40(3):419-423.) De WILD P J, den UIL H, REITH J H, KIEL J H A, HEERES H J. Biomass valorisation by staged degasification:A new pyrolysis-based thermochemical conversion option to produce value-added chemicals from lignocellulosic biomass[J]. J Anal Appl Pyrolysis, 2009, 85(1/2):124-133. DOBELE G, URBANOVICH I, VOLPERT A, KAMPARS V, SAMULIS E. Fast pyrolysis-effect of wood drying on the yield and properties of bio-oil[J]. Bioresourc, 2007, 2(4):699-706. KOTILAINEN R A, TOIVANEN T J, ALEN R J. FTIR monitoring of chemical changes in softwood during heating[J]. J Wood Chem Technol, 2000, 20(3):307-320. WINDEISEN E, STROBEL C, WEGENER G. Chemical changes during the production of thermo-treated beech wood[J]. Wood Sci Technol, 2007, 41(6):523-536. 刘荣厚, 袁海荣,李金洋. 花生壳热解试验及其剩余物特性红外光谱分析[J]. 农业工程学报, 2007, 23(12):197-202. (LIU Rong-hou, YUAN Hai-rong, LI Jin-yang. Experiments of peanut hull pyrolyis and FTIR spectral analysis of characteristics of its surplus matters[J].Transactions of the Chinese Society of Agricultural Engineering, 2007, 23(12):197-202.) ZUO S-L, GAO S-Y, YUAN X-G, XU B-S. Carbonization mechanism of bamboo (phyllostachys) by means of Fourier Transform Infrared and elemental analysis[J]. J Forestry Res, 2003, 14(1):75-79. BAYERBACH R, MEIER D. Characterization of the water-insoluble fraction from fast pyrolysis liquids (pyrolytic lignin):Part IV Structure elucidation of oligomeric molecules[J]. J Anal Appl Pyrolysis, 2009, 85(1/2):98-107. BALDOCK J A, SMERNIK R J. Chemical composition and bioavailability of thermally, altered Pinus resinosa (Red Pine) wood[J]. Org Geochem, 2002, 33(9):1093-1109. SCHNITZER M I, MONREAL C M, FACEY G A, FRANSHAM P B. The conversion of chicken manure to biooil by fast pyrolysis:I Analyses of chicken manure, biooils and char by C-13 and H-1 NMR and FTIR spectrophotometry[J]. J Environ Sci Health Part B, 2007, 42(1):71-77.
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