Analysis of the catalytic steam gasification mechanism of biomass

摘要

The gasification of cellulose was here used to prove that the inner reaction of oxygen with carbon contained in the biomass was unavoidable during the gasification of biomass. It was also proven that the dehydrogenation reaction and conversion of oxygen in biomass to CO always caused the formation of residual carbon. Although, almost all of oxygen contained in the biomass could be converted into CO by the catalytic effect of ions, which in turn could be converted to CO_2, but the CO_2 was always methanized. This indicated that the hydrogen and syngas yield contained in the product gas of biomass could not practically achieve to the theoretical maximum hydrogen and syngas yield from biomass. The present study showed biomass gasification connected in series with coal gasification to be an excellent approach to large-scale conversion of biomass to hydrogen and syngas.