Abstract
The heat and mass transfer characteristics during torrefaction of packed bed of bamboo powder have been investigated. In previous study, heating process was carried without carrier gas, resulting temperature distribution the temperature rise and final temperature varied depends on the locations inside the packed bed. Thus, it is difficult to evaluate the relationship between the chemical reaction and the temperature. By improving the reactor, allowing the heating process with carrier gas, the temperature rise became identical, resulting thermal decomposition in every locations occurred simultaneously, making the thermal reaction behavior became more obvious. The almost constant gas generation section after the peak was considered as the result of thermal decomposition of hemicellulose, which occurred in stages at temperature range 400 K < T < 600 K, as shown in the thermogravimetric result.
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