Effects of atmospheric gas composition and temperature on the gasification of coal in hot briquetting carbon composite iron ore

Yasuaki Ueki, Masao Kanayama, Takayuki Maeda, Koki Nishioka, Masakata Shimizu

    研究成果: Contribution to journalArticle査読

    4 被引用数 (Scopus)

    抄録

    The gasification behavior of carbon composite iron ore produced by hot briquetting process was examined under various gas atmospheres such as CO-N 2, CO2-N2 and CO-CO2 at various temperatures. The gasification of coal was affected strongly by atmospheric gas concentration and reaction temperature. Kinetic analysis in various gas atmospheres was carried out by using the first order reaction model, which yields the straight line relation between reaction rate constants for the gasification of coal and the gas concentration. Therefore, reaction rate constants for the gasification of coal in CO-CO2-N2 gas atmosphere were written as follows; kc1=a×kc1(CO) +b×kc1(CO2)+c×kc1(N2) kc2=a×kc2(CO)+b×kc2(CO 2)+c×kc2(N2) a=CCO/(C CO+CCO2+CN2), b=CCO2/(C CO+CCO2+CN2), c=CN2/(C CO+CCO2+CN2) where, kC1 and k C2 are the gasification rate constant of the first half(1/s) and the latter half(1/s) respectively, kC1(CO), kC1(CO 2) and kC1(N2) are kC1 in 100% CO gas atmosphere (1/s), 100% CO2 gas atmosphere (1/s) and 100% N 2 gas atmosphere (1/s) respectively, kC2(CO), k C2(CO2) and kC2(N2) are k C2 in 100% CO gas atmosphere (1/s), 100% CO2 gas atmosphere (1/s) and 100% N2 gas atmosphere (1/s) respectively, CCO, CCO2 and CN2 are the concentration of CO gas (vol%), CO2 gas (vol%) and N2 gas (vol%) respectively.

    本文言語英語
    ページ(範囲)18-22
    ページ数5
    ジャーナルTetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan
    93
    1
    DOI
    出版ステータス出版済み - 1 1 2007

    All Science Journal Classification (ASJC) codes

    • 凝縮系物理学
    • 物理化学および理論化学
    • 金属および合金
    • 材料化学

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