Abstract
In order to promote the utilization of unused woody biomass such as forestry biomass and pruned branch of fruit, the utilization of woody biomass has come to attract attention as a fuel at the pulverized-coal fired power plant. When the woody biomass in the forestry region is utilized, it is necessary to examine and reduce the energy consumption for collecting of resources, preprocessing such as comminuting and drying and transportation . In the present study, effect of semi-carbonization pyrolysis on comminution energy and assessment of transport property of woody biomass is investigated. The results obtained are as follows. Empirical correlations of work index in Bond′s Law are presented for both woody and semi-carbonization regions. The comminution energy can be estimated by the present empirical correlations within an accuracy of ±30 percent. To evaluate the effect of semi-carbonization process on the energy reduction of transport and comminution, an analysis of energy consumptions is conducted. From the result of analysis, it is found that the energy consumption ratio is the minimum at a mass yield condition of 0.6 for the same transport distance.
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