Abstract
Entrained-flow biomass gasification is one of the most promising technologies for utilizing biomass as energy and chemical resources because of its high gasification rate (carbon conversion rate from biomass to gas), low GHG(greenhouse gas) emission and high controllability of synthesized gas compositions. These advantages are attributable to its unique gasification reaction of solid biomass entrained in gas of upstream, one of the typical examples of multiphase flow. However, basic gasification reactions, such as behavior of biomass in gas and time-dependence of gas compositions, are not clarified enough. In this report, simple and basic phenomena are qualitatively overviewed.