Influence of Moisture Content of Woody Biomass on Heat Transfer with the Heterogeneous Chemical Reactions Caused in the Pyrolysis

摘要

Pyrolysis of biomass consists of many interdependent reactions; nevertheless, it can be reduced to the reaction, which is universally known as the Broido-Shafizadeh mechanism 2,11). In the primary reactions, biomass decomposes to gas, tar and char. This reaction has been studied extensively in the form of cellulose decomposition. In the secondary reaction, the tar generated in the primary reaction decomposes to light gas and char. However, as the evaporation process is not included in the mechanism, it is difficult to understand whether the decomposition is the endothermic process or the exothermic one.