is
that the size of the combustor is reduced, which can decrease
the system cost significantly. In addition, the new configuration
provides greater flexibility for gas cleanup, which is
important especially when the fuel is herbaceous biomass
such as corn stover. Figs. 1 and 2 illustrate the new fluidized
bed gasification/combustion configuration with all biomass
fuel going to the gasifier and a part of syngas sent to the
combustor as needed.