Recently, biomasses attract much attention as a renewable energy resource. Biocoke, hereinafter called BIC, is one of the solid biomass fuels that are made from woody or herbaceous biomass by heat and compression processes. BIC is highly dense, has high hardness, has a high energy density, and is expected to be an alternative to coal coke. In the present study, the combustion properties of a green tea BIC and a cypress BIC are experimentally examined. The X-ray CT scanning of the BICs is also conducted. The experimental results show that the combustion behavior of BIC is represented by the molding temperature rather than the apparent density of them. The deference of the internal structures of the BICs could be distinguished by X-ray CT scanning even if the density of the specimens is the same. Further, the CT value of the BIC is roughly correlated with the ignition delay and the duration of flaming of the BIC.
