O206 木質バイオマスの熱分解ガス化原料の前処理乾燥方法の研究

抄録

Woody biomass is an abundant resource, and pyrolysis gasification to recover energy from it as a typical type of dry biomass has been studied and demonstrated actively in various regions. However, although woody biomass is dry, it is not dry enough to be ideal for energy recovery in most cases. Biomass with higher water content increases the energy consumed by water evaporation in the pyrolysis process, which results in less energy recovered from biomass. Especially when wood chips from raw trees such as thinned woods are used as the raw materials, a process to dry them is often required as an essential pretreatment for the pyrolysis gasification. The use of waste heat from gasification facilities for drying raw materials would lead to more effective use of biomass energy and also improve the energy efficiency in the facilities as a whole. We are comparatively examining methods to dry different existing types of woody chips and conducting various drying tests with woody chips to achieve a drying system specializing in woody chips. We have eventually conducted research aimed at establishing a low-cost, high-efficiency drying system by developing a drying system integrated with a pyrolysis gasification furnace.