H113 Study on the influence of major components of woody biomass heat of reaction on the heat transfer during pyrolysis.

Abstract

Temperature and heat of reactions have been measured during fast pyrolysis of biomass powder packed bed. For cellulose powder, temperature at the center of the bed, T_C, increased monotonously with time due to thermal conduction for T_C < 500K. The temperature increased slowly with time due to endothermic decomposition of cellulose for 500 K < T_C < 600 K. On other hand, exothermic behaviors for xylan powder and lignin one were significantly observed at TC > 500 K and at T_C > 600 K, respectively. Furthermore, numerical simulation of fast pyrolysis of cellulose powder packed has been conducted.