Effect of torrefaction on structure and fast pyrolysis behavior of corncobs

被引：208

作者：

Zheng, Anqing ^{[1
]}

Zhao, Zengli ^{[1
]}

Chang, Sheng ^{[1
]}

Huang, Zhen ^{[1
]}

Wang, Xiaobo ^{[1
]}

He, Fang ^{[1
]}

Li, Haibin ^{[1
]}

机构：

[1] Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Renewable Energy & Gas Hydrate, Guangzhou 510640, Peoples R China

来源：

BIORESOURCE TECHNOLOGY | 2013年 / 128卷

关键词：

Torrefaction; Fast pyrolysis; Bio-oil; C-13; NMR; Pyrolysis mechanism; BIO-OIL; CELLULOSE; BIOMASS; WOOD; PRETREATMENT; TEMPERATURE; GASOLINE; WATER; NMR;

D O I：

10.1016/j.biortech.2012.10.067

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Pretreatment of corncobs using torrefaction was conducted in an auger reactor at 250-300 degrees C and residence times of 10-60 min. The torrefied corncobs were fast pyrolyzed in a bubbling fluidized bed reactor at 470 degrees C to obtain high-quality bio-oil. The heating value and pH of the bio-oil improved when the torrefaction as pretreatment was applied; however, increasing bio-oil yield penalties were observed with increasing torrefaction severity. Fourier transform infrared Spectroscopy (FTIR) and quantitative solid C-13 nuclear magnetic resonance spectrometry (NMR) analysis of torrefied corncobs showed that the devolatilization, crosslinking and charring of corncobs during torrefaction could be responsible for the bio-oil yield penalties. Gas chromatography-mass spectrometry (GC-MS) analysis showed that the acetic acid and furfural contents of the bio-oil decreased with torrefaction temperature or residence time. The results showed that torrefaction is an effective method of pretreatment for improving bio-oil quality if the crosslinking and charring of biomass can be restricted. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：370 / 377

页数：8

共 34 条

[1] Pretreatment technologies for an efficient bioethanol production process based on enzymatic hydrolysis: A review [J].

Alvira, P. ;

Tomas-Pejo, E. ;

Ballesteros, M. ;

Negro, M. J. .

BIORESOURCE TECHNOLOGY, 2010, 101 (13) :4851-4861

[2] Principles and practice of biomass fast pyrolysis processes for liquids [J].

Bridgwater, AV .

JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS, 1999, 51 (1-2) :3-22

[3] Green gasoline by catalytic fast pyrolysis of solid biomass derived compounds [J].

Carlson, Torren R. ;

Vispute, Tushar R. ;

Huber, George W. .

CHEMSUSCHEM, 2008, 1 (05) :397-400

[4] Examination of degree of cross-linking for cellulose precursors pretreated with acid/hot water at low temperature [J].

Chaiwat, Weerawut ;

Hasegawa, Isao ;

Kori, Junichi ;

Mae, Kazuhiro .

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2008, 47 (16) :5948-5956

[5] An evaluation on improvement of pulverized biomass property for solid fuel through torrefaction [J].

Chen, Wei-Hsin ;

Cheng, Wen-Yi ;

Lu, Ke-Miao ;

Huang, Ying-Pin .

APPLIED ENERGY, 2011, 88 (11) :3636-3644

[6] Overview of applications of biomass fast pyrolysis oil [J].

Czernik, S ;

Bridgwater, AV .

ENERGY & FUELS, 2004, 18 (02) :590-598

[7] SOLID-STATE C-13 NUCLEAR-MAGNETIC-RESONANCE STUDIES OF WOOD DECAY .1. WHITE-ROT DECAY OF COLORADO BLUE SPRUCE [J].

DAVIS, MF ;

SCHROEDER, HR ;

MACIEL, GE .

HOLZFORSCHUNG, 1994, 48 (02) :99-105

[8] Biomass valorisation by staged degasification A new pyrolysis-based thermochemical conversion option to produce value-added chemicals from lignocellulosic biomass [J].

de Wild, P. J. ;

den Uil, H. ;

Reith, J. H. ;

Kiel, J. H. A. ;

Heeres, H. J. .

JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS, 2009, 85 (1-2) :124-133

[9] Bioenergy II: Biomass Valorisation by a Hybrid Thermochemical Fractionation Approach [J].

de Wild, Paul J. ;

den Uil, Herman ;

Reith, Johannes H. ;

Lunshof, Anton ;

Hendriks, Carlijn ;

van Eck, Ernst R. H. ;

Heeres, Erik J. .

INTERNATIONAL JOURNAL OF CHEMICAL REACTOR ENGINEERING, 2009, 7

[10] Cellulose dehydration and depolymerization reactions during pyrolysis in the presence of phosphoric acid [J].

Dobele, G ;

Rossinskaja, G ;

Telysheva, G ;

Meier, D ;

Faix, O .

JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS, 1999, 49 (1-2) :307-317

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