Reactivity and structural change of coal char during steam gasification

Yasushi Sekine, Kiyohiro Ishikawa, Eiichi Kikuchi, Masahiko Matsukata, Akemitsu Akimoto

    Research output: Contribution to journalArticle

    97 Citations (Scopus)

    Abstract

    This study is intended to clarify the relationship among the reactivity of coal char with steam, structural change in residual carbon, and ash behavior. Steam gasification of various coal chars and demineralized chars was carried out in a fixed-bed reactor. After gasification, the reacted char was analyzed using laser raman spectroscope (LRS), and scanning electron microscope, energy dispersive X-ray spectroscope (SEM/EDX) mapping. Results of SEM images and EDX-mappings revealed that novel parallel analysis of cross correlation between EDX-mapping and LRS-mapping was found to be very effective for the comprehensive evaluation of ash behavior and carbonaceous structure. As the gasification reaction proceeds, the reactivity of the char was varied; existence of Si and Al seemed to suffocate the char reactivity.

    Original languageEnglish
    Pages (from-to)122-126
    Number of pages5
    JournalFuel
    Volume85
    Issue number2
    DOIs
    Publication statusPublished - 2006 Jan

    Fingerprint

    Coal
    Steam
    Ashes
    Gasification
    Energy dispersive spectroscopy
    Lasers
    Coal ash
    Electron microscopes
    Carbon
    Scanning
    X rays
    Scanning electron microscopy

    Keywords

    • Carbonaceous structure
    • Coal char gasification
    • Microscopic observation

    ASJC Scopus subject areas

    • Organic Chemistry
    • Energy Engineering and Power Technology
    • Fuel Technology

    Cite this

    Reactivity and structural change of coal char during steam gasification. / Sekine, Yasushi; Ishikawa, Kiyohiro; Kikuchi, Eiichi; Matsukata, Masahiko; Akimoto, Akemitsu.

    In: Fuel, Vol. 85, No. 2, 01.2006, p. 122-126.

    Research output: Contribution to journalArticle

    Sekine, Yasushi ; Ishikawa, Kiyohiro ; Kikuchi, Eiichi ; Matsukata, Masahiko ; Akimoto, Akemitsu. / Reactivity and structural change of coal char during steam gasification. In: Fuel. 2006 ; Vol. 85, No. 2. pp. 122-126.
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