46.粘度と液体成分分率の関係に基づく軟化石炭の相構造推定

抄録

Shear-rate-independent viscosity and hydrogen-based liquid fraction of softening coal pellets upon heating were measured by a variable-force-loading needle penetrometry and a proton magnetic resonance analysis, respectively. From the results of isothermal heating and non-isothermal heating, it was revealed that a single linear relationship is held between the logarithm of the viscosity and the liquid fraction over a temperature range from 600 to 800K. The results also suggested insignificant effect of temperature on the liquid viscosity. The observed linear relationship between the logarithm of viscosity and the liquid fraction could be explained well by considering that the so-called plastic domain of softening coal is a suspension of liquid and plastic solid.