Correlation between potassium losses and mineral matter composition in catalytic coal steam gasification

✍ Scribed by Giacomo Bruno; Luigi Carvani; Giovanni Passoni

• Publisher: Elsevier Science
• Year: 1986
• Tongue: English
• Weight: 291 KB
• Volume: 65
• Category: Article
• ISSN: 0016-2361
• DOI: 10.1016/0016-2361(86)90127-4

✦ Synopsis

The utilization of potassium as catalyst in coal steam gasification suffers due to difficulty in its quantitative recovery from gasification residues. This is due to the formation of non-leachable compounds with the mineral matter ofcoal. The reactivity of K,CO, with some mineral constituents ofcoal has been evaluated at 973 K; after reaction, residues were analysed by XRD and leached with water to test the potassium solubility. Subsequently, through investigation of the interaction of potassium with 8 carbonaceous matrices from four differen ccoals, an attempt was made to establish a correlation between ash characteristics and quantity of non-recoverable potassium. It was also possible to identify some compounds formed by reaction between potassium and mineral matter.