半炭化スギ木粉 Two-step 熱分解モデルで生成される反応中間体の発熱量推定

抄録

Torrefaction has come to attract attention as one of the promising methods for improving the fuel properties of solid biofuels. This is because not only higher heating value (HHV) but also several functions such as grindability and water absorptivity are reformed. Since HHV of torrefied solid biofuel is affected by the progress degree of torrefaction, the relationship between torrefaction conditions and HHV has to be clarified to produce torrefied solid biofuels with a predetermined HHV. In this study, in order to estimate the HHV of torrefied Japanese cedar, the HHVs for intermediates and char in the Two-step pyrolysis model are investigated. It is found that both HHVs depend only on the pyrolysis temperature, regardless of the pyrolysis time.