Catalytic Steam Gasification of Coal by Physical Mixing of K-Exchanged Brown Coal

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

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