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Fusion characteristics of capsicum stalk ash
Author(s) -
Niu Yanqing,
Tan Houzhang,
Wang Xuebin,
Xu Tongmo,
Liu Zhengning,
Liu Yang
Publication year - 2011
Publication title -
asia‐pacific journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.348
H-Index - 35
eISSN - 1932-2143
pISSN - 1932-2135
DOI - 10.1002/apj.452
Subject(s) - ashing , fly ash , fusion , softening , stalk , mineralogy , materials science , metallurgy , coal , chemistry , composite material , organic chemistry , linguistics , philosophy , physics , quantum mechanics , horticulture , biology
Biomass is an important energy source and the ash formed in thermochemical conversion processes requires analysis and interpretation. Capsicum stalk ashes prepared by ashing at 400, 600 and 815 °C were studied by X‐ray fluorescence, X‐ray diffractometer, thermogravimetry and ash fusion temperature tests. Melting and slagging did not occur in the ashing process; however, the fusion characteristic indices showed that there was a tendency for slagging. Meanwhile, it was found that deformation, softening, hemispherical and fluid temperatures were consistent in fusion temperature tests, and were all above 1100 °C. The fusion characteristics of capsicum stalk ash were mainly dependent upon the high‐temperature molten material built up by periclase, quartz, potassium iron oxide, microcline, zeolite and calcium silicate. Therefore, ash fusion characteristics were independent of the ashing temperature. The evaluation of the ash fusion characteristics of capsicum stalk biomass should not be based upon the fusion characteristic indices of coal, but should be related to the high‐temperature molten material, which provides a supporting effect to the skeleton structure in biomass ash. Copyright © 2010 Curtin University of Technology and John Wiley & Sons, Ltd.