バイオマスの熱分解特性および熱分解物質のガス化反応シミュレーション
2006 年 72 巻 715 号 p. 778-783
詳細
2006 年 72 巻 715 号 p. 778-783
As a first step to clarify the mechanisms of the combustion and gasification of biomass, fundamental experiment for the thermal decomposition and numerical simulation for the elementary reaction of decomposed chemical species have been performed. In the experiment, various kinds of biomass particle were immediately heated by applying the electrically induced magnetic field to the metal tray on which the objective particles were placed. It was clarified that for the two levels of decomposition temperature 590 and 1040°C, the variations of decomposition rate with heating time was same with each other, but the components of decomposed species were largely different; the mole fraction of C6-C9 components for the low temperature 590°C were 3-10 times larger than those for 1040°C. Furthermore, the relationship between percentage of C5, C6-C9 species and lignin containing in biomass was ascertained. It was obtained from the numerical simulation that these heavy species could decompose to C1 and H2 at 1000°C over with H2O acting as the oxidation agent, and that the effect of H2O in the atmospheric pressure became maximum at PH2O-0.7 atm.
