66.低温空気酸化炭の軟化溶融特性と酸素の挙動(石炭利用における科学と工学の融合)

抄録

Softening property of coal is influenced by low-temperature oxidation. In this study, the oxidation mechanism of coal particle and the role of oxygen incorporated for the devolatilization behavior of oxidized coal were investigated. The coal oxidation was carried out in the furnace with ^<16>O_2 or ^<18>O_2. The oxidation of coal proceeded from coal particle surface and the structure and softening property of the sample collected from surface part of oxidized coal was completely different from those from inner part of the coal. When the oxidized sample was pyrolyzed at 10℃/min up to 500℃, the release profile of H_2O (m/z=20) was somewhat different from that of H_2O (m/z=18).