TY - JOUR
T1 - Biomass torrefaction characteristics in inert and oxidative atmospheres at various superficial velocities
AU - Chen, Wei Hsin
AU - Lu, Ke Miao
AU - Liu, Shih Hsien
AU - Tsai, Chi Ming
AU - Lee, Wen Jhy
AU - Lin, Ta Chang
N1 - Funding Information:
The authors gratefully acknowledge the financial support of China Steel Corporation for this study.
Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 2013/10
Y1 - 2013/10
N2 - The reaction characteristics of four biomass materials (i.e. oil palm fiber, coconut fiber, eucalyptus, and Cryptomeria japonica) with non-oxidative and oxidative torrefaction at various superficial velocities are investigated where nitrogen and air are used as carrier gases. Three torrefaction temperatures of 250, 300, and 350°C are considered. At a given temperature, the solid yield of biomass is not affected by N2 superficial velocity, revealing that the thermal degradation is controlled by heat and mass transfer in biomass. Increasing air superficial velocity decreases the solid yield, especially in oil palm fiber and coconut fiber, implying that the torrefaction reaction of biomass is dominated by surface oxidation. There exists an upper limit of air superficial velocity in the decrement of solid yield, suggesting that beyond this limit the thermal degradation of biomass is no longer governed by surface oxidation, but rather is controlled by internal mass transport.
AB - The reaction characteristics of four biomass materials (i.e. oil palm fiber, coconut fiber, eucalyptus, and Cryptomeria japonica) with non-oxidative and oxidative torrefaction at various superficial velocities are investigated where nitrogen and air are used as carrier gases. Three torrefaction temperatures of 250, 300, and 350°C are considered. At a given temperature, the solid yield of biomass is not affected by N2 superficial velocity, revealing that the thermal degradation is controlled by heat and mass transfer in biomass. Increasing air superficial velocity decreases the solid yield, especially in oil palm fiber and coconut fiber, implying that the torrefaction reaction of biomass is dominated by surface oxidation. There exists an upper limit of air superficial velocity in the decrement of solid yield, suggesting that beyond this limit the thermal degradation of biomass is no longer governed by surface oxidation, but rather is controlled by internal mass transport.
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U2 - 10.1016/j.biortech.2013.07.064
DO - 10.1016/j.biortech.2013.07.064
M3 - Article
C2 - 23933022
AN - SCOPUS:84881530829
SN - 0960-8524
VL - 146
SP - 152
EP - 160
JO - Bioresource technology
JF - Bioresource technology
ER -