Michio Shibaoka

TL;DR: In this paper, the authors investigated combustion characteristics for different ranks of coal in a one-dimensional vertical tube furnace without external heating, and the relationship between combustion rate and morphology and properties of chars from different coals was discussed.

TL;DR: The role of coal in the generation and migration of hydrocarbons is discussed from the viewpoints of chemistry and petrology in this paper, where it is shown that under geochemical conditions most coal can give rise to oil, as well as gas.

TL;DR: In this paper, a microscopic method to characterize unburnt char particles in fly ash is proposed, and the char particles are classified into four types (vesicular, dense, mixed and mineral-rich) and categorized into five volumetric size classes (>106, 106−105, 105−104, 104−103, <103μm3).

TL;DR: In this article, the influence of calcium on brown coal pyrolysis and gasification was examined by optical microscopy to determine reflectance and the percentage of particles that had become plastic.

TL;DR: In this paper, a new device for pyrolysing coal under closely controlled conditions over a range of heating rates from 10 −1 to 10 4 °C/s is presented.