Catalysed gasification of coal chars exhibiting isotropic textures

✍ Scribed by Koji Shimada; Yuan C. Fu; Hiroshi Hara

• Publisher: Elsevier Science
• Year: 1991
• Tongue: English
• Weight: 764 KB
• Volume: 70
• Category: Article
• ISSN: 0016-2361
• DOI: 10.1016/0016-2361(91)90068-l

✦ Synopsis

Catalytic gasification of coal chars exhibiting isotropic textures has been conducted using chars prepared from four types of coal. Mineral contents and inertinites were separated from the coal macerals using a density separation technique. The coal macerals were impregnated with potassium hydroxide prior to heat treatment to form chars. The state of the char surface and the dispersion of potassium onto the char substrate were examined by SEM and electron probe microanalyser techniques. Macerals of caking coals show greater dispersion of high contents of potassium onto pore walls and enhance gasification reactivity.