JOURNAL OF CHEMICAL ENGINEERING OF JAPAN | |
Catalytic Steam Gasification of Coal by Physical Mixing of K-Exchanged Brown Coal | |
Masamitsu Ogiwara1  Takayuki Takarada1  Kunio Kato1  | |
[1] Dept. of Biological and Chemical Engineering, Gunma University | |
关键词: Chemical Reaction; Coal Gasification; Catalyst; Potassium Chloride; Coal Rank; Physical Mixing; | |
DOI : 10.1252/jcej.25.44 | |
来源: Maruzen Company Ltd | |
【 摘 要 】
References(20)Cited-By(1)The application of KCl to the catalytic gasification of higher-rank coal char was investigated. K-exchanged brown coal was prepared from KCl using an ion-exchange method. The K-loaded coal was physically mixed with a higher-rank coal. The mixture was gasified in steam with a thermobalance.The effects of the mixing pattern and the caking property of higher-rank coal on the catalytic effectiveness of K-excbanged coal were examined. The catalytic effectiveness of physical mixing of K-loaded brown coal was compared with that of physical mixing of Ni-loaded brown coal.Rate enhancement by physical mixing of K-exchanged Yallourn coal was almost independent of both the caking property of higher-rank coal and the chemical state of potassium catalyst before mixing. Direct contact between K-exchanged coal and higher-rank coal was required for this catalytic coal gasification system. EPMA analysis showed that potassium catalyst easily transferred from Yallourn coal to higher-rank coal char surface, whereas no transfer of Ni catalyst was observed. Potassium was a highly suitable catalyst for catalytic gasification by the physical mixing method.
【 授权许可】
Unknown
【 预 览 】
Files | Size | Format | View |
---|---|---|---|
RO201912080693394ZK.pdf | 1208KB | download |