Effect of heating rate on steam gasification of biomass. 1. Reactivity of char

被引：89

作者：

Fushimi, C ^{[1
]}

Araki, K ^{[1
]}

Yamaguchi, Y ^{[1
]}

Tsutsumi, A ^{[1
]}

机构：

[1] Univ Tokyo, Dept Chem Syst Engn, Bunkyo Ku, Tokyo 1138656, Japan

来源：

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 2003年 / 42卷 / 17期

关键词：

D O I：

10.1021/ie030056c

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Steam gasification or pyrolysis of biomass was conducted at heating rates of 1, 10, and 100 K S-1 using a thermobalance reactor. Three kinds of biomass samples (cellulose, lignin, and bagasse) were used. Time profiles of weight change of biomass samples during steam gasification and pyrolysis were measured at 973 K. Char obtained in steam gasification of lignin was analyzed with a scanning electron microscope and a CHNS elemental analyzer. The effect of the heating rate on final conversion and reaction rate of char was investigated. It was found that a higher heating rate substantially increased the reaction rate of lignin char in steam gasification because porous char was produced during devolatilization due to rapid evolution of volatiles. A higher heating rate also increased final conversion of biomass. The heating rate showed no pronounced influence on elemental composition of char.

引用

页码：3922 / 3928

页数：7

共 31 条

[1] Impact of systematic errors on the determination of cellulose pyrolysis kinetics [J].

Antal, MJ ;

Varhegyi, G .

ENERGY & FUELS, 1997, 11 (06) :1309-1310

[2] Cellulose pyrolysis kinetics: Revisited [J].

Antal, MJ ;

Varhegyi, G ;

Jakab, E .

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 1998, 37 (04) :1267-1275

[3] CELLULOSE PYROLYSIS KINETICS - THE CURRENT STATE KNOWLEDGE [J].

ANTAL, MJ ;

VARHEGYI, G .

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 1995, 34 (03) :703-717

[4] KINETICS OF CELLULOSE PYROLYSIS IN NITROGEN AND STEAM [J].

ANTAL, MJ ;

FRIEDMAN, HL ;

ROGERS, FE .

COMBUSTION SCIENCE AND TECHNOLOGY, 1980, 21 (3-4) :141-152

[5] Global kinetic analysis of complex materials [J].

Burnham, AK ;

Braun, RL .

ENERGY & FUELS, 1999, 13 (01) :1-22

[6] Commercial steam reforming catalysts to improve biomass gasification with steam-oxygen mixtures .1. Hot gas upgrading by the catalytic reactor [J].

Caballero, MA ;

Aznar, MP ;

Gil, J ;

Martin, JA ;

Frances, E ;

Corella, J .

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 1997, 36 (12) :5227-5239

[7]

Chen GX, 1997, J ANAL APPL PYROL, V40-1, P491

[8] Calcined dolomite, magnesite, and calcite for cleaning hot gas from a fluidized bed biomass gasifier with steam: Life and usefulness [J].

Delgado, J ;

Aznar, MP ;

Corella, J .

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 1996, 35 (10) :3637-3643

[9]

DRIGT A, 2001, BIOMASS BIOENERG, V20, P45

[10] Steam gasification of Cynara cardunculus L.:: influence of variables [J].

Encinar, JM ;

González, JF ;

González, J .

FUEL PROCESSING TECHNOLOGY, 2002, 75 (01) :27-43

← 1 2 3 4 →