Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : October 12, 2019 - October 13, 2019
In this study, bamboo powder combustion experiment was conducted while changing the temperature using a flat flame in order to clarify the mass transfer mechanism of ash. Deposits and residues after combustion were predicted by EDX analysis and thermodynamic equilibrium calculation by FactSage. From the visualization results, only a small amount of deposit was observed at a maximum combustion temperature Tmax = 1200 K, but a strong and large amount of deposit was confirmed at Tmax = 1300 K. EDX analysis focused on K2O, SiO2, and Fe2O3, which are the main components of ash, and found that in the residue, the higher the combustion temperature made the more the ratio of SiO2 and Fe2O3. From the EDX analysis results of the deposits, K2O accounted for about 80 % at Tmax = 1200 K, but the ratio of SiO2 and Fe2O3 increased significantly at Tmax = 1300 K. In the thermodynamic equilibrium calculation by FactSage, it was found that the higher the equilibrium temperature got the more the eutectic in the solid state of Fe2O3 and K-Si system.
