Abstract
Woody biomass is a hopeful energy resource to reduce greenhouse gas emission. Little amount of woody biomass is utilized for energy production, although Japan has much forest, and has large emission of greenhouse gas. Because most forests in Japan are located in steep mountain ranges far from urban area. Therefore, we must reduce the labor and the costs for ingathering and transportation of the woody biomass energy to utilize it in Japan. The object of our study is to improve the calorific density of woody biomass pellets, and reduce the transportation cost per unit energy. We adopted the semi-carbonizing method to achieve it. This study examined the optimum semi-carbonizing condition for pelletizing.
