異粒径の原料を用いたバイオコークスの圧縮強度特性と粉砕特性

抄録

Today, all over the world, we have serious environmental issue of the greenhouse gas emissions produced by fossil fuels. The greenhouse gas emission from the coal has especially been considered problematic, and EU member nations have decided not to use close to 60 % of the total coal fired power generation by 2030. In Japan, biomass is expected as a replacement for coal used as base power supply in electricity demand. In this situation, biocoke which is a solid biofuel produced from biomass is useful for transport because of its high-density. Bio-coke, however, needs crushing to feed as a co-firing fuel with coal in co-firing power generation. In this study, after producing biocokes, we calculated their particle density. We also measured biocoke compressive strength with a compression testing machine and crushing energy with a hammer mill. We investigated relationship between the particle density and the compressive strength. Furthermore, we considered relationship between the crushing energy and the compressive strength. In conclusion, we found that the particle density bears a direct relation to the compressive strength. Additionally, we suggested that the crushing energy is in inverse proportion to the compressive strength, especially Japanese cedar, and a factor that affects crushing energy is a particle size in raw materials rather than the compressive strength.