Observation of the Transient Gasification Characteristics of a Biomass under the Coexistence Atmosphere of CO₂ and H₂O

抄録

Biomass gasification and carbonization are already in practical use; however, gasification systems are not enough to be economically viable, and carbonization is low energy efficiency process. Therefore coproduction of carbide and fuel is being examined in late years. In order to achieve systematic development of that kind of co-production system, the information about pyrolysis behavior of biomass under various atmosphere gas composition and of various specimen size should be investigated. In this study, we tried to investigate the transient gasification behavior of a biomass under the carbonization temperature 873 K and the coexistence atmosphere of H₂O-CO₂. The experimental results show that the transient gasification behavior of a biomass under carbonization temperature has several similar features as that under gasification temperature qualitatively; however, further information about pyrolysis behavior and the scale effect of the material should be investigated.