Reactivity and structural change of coal char during steam gasification

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

*この研究の対応する著者

研究成果: Conference contribution

1 被引用数 (Scopus)

抄録

This study is intended to clarify the relationship among the reactivity of coal char with steam, carbonaceous structural change, and ash behavior. Steam gasification of various coal chars and demineralized chars was carried out in a fixed-bed reactor at 1273 K. After gasification at certain conversion le vel, 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 EDX-mapping and LRS-mapping were extremely effective for comprehensive evaluation of ash behavior and carbonaceous structure. As the gasification reaction proceeds, the reactivity of char was changed; existence of Si and Al seemed to suffocate the char reactivity from these parallel analyses.

本文言語English
ホスト出版物のタイトル22nd Annual International Pittsburgh Coal Conference 2005, PCC 2005
ページ1207-1213
ページ数7
出版ステータスPublished - 2005
イベント22nd Annual International Pittsburgh Coal Conference 2005, PCC 2005 - Pittsburgh, PA, United States
継続期間: 2005 9 122005 9 15

出版物シリーズ

名前22nd Annual International Pittsburgh Coal Conference 2005, PCC 2005
2

Conference

Conference22nd Annual International Pittsburgh Coal Conference 2005, PCC 2005
国/地域United States
CityPittsburgh, PA
Period05/9/1205/9/15

ASJC Scopus subject areas

  • 地盤工学および土木地質学

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