Dynamical model of indirect gasification in heat pipe biomass gasifier was set up to study the effect of temperature and steam/biomass mass ratio on gas composition

heat value and gas yield.The results show that

with an increase in gasification temperature

the volume fraction of H2and CO monoxide increased greatly

while that of CO2decreased.An increase in steam/biomass mass ratio was beneficial to production of H2and CO2

but not to CO.The heat value of the product gas could reach 10MJ/m3 when the percentage of H2in it ranged from 50%to 60%.