TY - JOUR
T1 - Gasification of different biomasses in a dual-bed gasifier system combined with novel catalysts with high energy efficiency
AU - Asadullah, Mohammad
AU - Miyazawa, Tomohisa
AU - Ito, Shin Ichi
AU - Kunimori, Kimio
AU - Yamada, Muneyoshi
AU - Tomishige, Keiichi
N1 - Funding Information:
This research was supported by the Future Program of Japan Society for the Promotion of Sciences under the Project ‘Synthesis of Ecological High Quality of Transportation Fuels’ (JSPS-RFTF98P01001) and the 21st Century COE program under the Ministry of Education, Culture, Sports, Science and Technology.
PY - 2004/7/30
Y1 - 2004/7/30
N2 - Syngas has been produced from the gasification of various biomasses such as jute stick, bagasse, rice straw, and saw dust of cedar wood using a dual-bed gasifier combined with a novel catalyst. The gasification conditions were 150mg/min of biomass feeding, ER = 0.25, catalyst (3g) at temperature range of 823-923K. The carbon conversion to gas and yield of useful gases such as CO, H2, and CH4 were dependent on the properties of biomass. In terms of the formation rate of useful gases, the biomass quality was in the order of cedar wood > jute stick > bagasse > rice straw. Although the rice straw gasification is comparatively difficult in a single-bed gasifier due to its high ash content (22.6%), it becomes possible in a dual-bed reactor system. The dual-bed gasifier using Rh/CeO2/SiO2 catalyst that has been developed gave higher conversion to gas and higher yield of CO+H2+CH4 than did the single-bed gasifier. In the case of cedar wood gasification, although a small amount of coke was formed on the catalyst surface, the tar was not formed at all even at 823K. However, in the case of other biomass, especially for rice straw, a significant amount of coke on the catalyst surface and tar was formed even at the high temperature (923K).
AB - Syngas has been produced from the gasification of various biomasses such as jute stick, bagasse, rice straw, and saw dust of cedar wood using a dual-bed gasifier combined with a novel catalyst. The gasification conditions were 150mg/min of biomass feeding, ER = 0.25, catalyst (3g) at temperature range of 823-923K. The carbon conversion to gas and yield of useful gases such as CO, H2, and CH4 were dependent on the properties of biomass. In terms of the formation rate of useful gases, the biomass quality was in the order of cedar wood > jute stick > bagasse > rice straw. Although the rice straw gasification is comparatively difficult in a single-bed gasifier due to its high ash content (22.6%), it becomes possible in a dual-bed reactor system. The dual-bed gasifier using Rh/CeO2/SiO2 catalyst that has been developed gave higher conversion to gas and higher yield of CO+H2+CH4 than did the single-bed gasifier. In the case of cedar wood gasification, although a small amount of coke was formed on the catalyst surface, the tar was not formed at all even at 823K. However, in the case of other biomass, especially for rice straw, a significant amount of coke on the catalyst surface and tar was formed even at the high temperature (923K).
KW - Agricultural wastage
KW - Biomass
KW - Catalytic gasification
KW - Fluidized bed
KW - Synthesis gas
UR - http://www.scopus.com/inward/record.url?scp=2542467910&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=2542467910&partnerID=8YFLogxK
U2 - 10.1016/j.apcata.2004.02.028
DO - 10.1016/j.apcata.2004.02.028
M3 - Article
AN - SCOPUS:2542467910
VL - 267
SP - 95
EP - 102
JO - Applied Catalysis A: General
JF - Applied Catalysis A: General
SN - 0926-860X
IS - 1-2
ER -