TY - GEN
T1 - Reactivity and structural change of coal char during steam gasification
AU - Sekine, Yasushi
AU - Ishikawa, Kiyohiro
AU - Kikuchi, Eiichi
AU - Matsukata, Masahiko
AU - Akimoto, Akemitsu
N1 - Funding Information:
This study was financially supported by BRAIN-C (CCUJ/NEDO).
PY - 2005
Y1 - 2005
N2 - 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.
AB - 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.
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M3 - Conference contribution
AN - SCOPUS:84883130560
SN - 9781627480949
T3 - 22nd Annual International Pittsburgh Coal Conference 2005, PCC 2005
SP - 1207
EP - 1213
BT - 22nd Annual International Pittsburgh Coal Conference 2005, PCC 2005
T2 - 22nd Annual International Pittsburgh Coal Conference 2005, PCC 2005
Y2 - 12 September 2005 through 15 September 2005
ER -