Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 49: Issue 2
Studies of fly ash using thermal analysis techniques
Authors:
Hanxu Li Materials Characterization Center, Department of Chemistry, Western Kentucky University, 42101 Bowling Green, KY USA

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Xiang-Zhong Shen Materials Characterization Center, Department of Chemistry, Western Kentucky University, 42101 Bowling Green, KY USA

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B. Sisk Materials Characterization Center, Department of Chemistry, Western Kentucky University, 42101 Bowling Green, KY USA

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W. Orndorff Materials Characterization Center, Department of Chemistry, Western Kentucky University, 42101 Bowling Green, KY USA

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Dong Li Materials Characterization Center, Department of Chemistry, Western Kentucky University, 42101 Bowling Green, KY USA

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Wei-Ping Pan Materials Characterization Center, Department of Chemistry, Western Kentucky University, 42101 Bowling Green, KY USA

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J. Riley Materials Characterization Center, Department of Chemistry, Western Kentucky University, 42101 Bowling Green, KY USA

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Pages:
943–951
Online Publication Date:
05 Aug 2005
Publication Date:
01 Aug 1997
Article Category:
Research Article
DOI:
https://doi.org/10.1007/bf01996780
Keywords:
AFBC; fly ash; TG/FTIR
Restricted access

Abstract  

Improved thermoanalytical methods have been developed that are capable of quantitative identification of various components of fly ash from a laboratory-scale fluidized bed combustion system. The thermogravimetric procedure developed can determine quantities of H2O, Ca(OH)2, CaCO3, CaSO4 and carbonaceous matter in fly ash with accuracy comparable to more time-consuming ASTM methods. This procedure is a modification of the Mikhail-Turcotte methods that can accurately analyze bed ash, with higher accuracy regarding the greater amount of carbonaceous matter in fly ash. In addition, in conjunction with FTIR and SEM/EDS analyses, the reduction mechanism of CaSO4 as CaSO4+4H2 ↔ CaS + 4H2O has been confirmed in this study. This mechanism is important in analyzing and evaluating sulfur capture in fluidized-bed combustion systems.

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Cover Journal of Thermal Analysis and Calorimetry
Journal of Thermal Analysis and Calorimetry
Print ISSN:
1388-6150
Online ISSN:
1572-8943

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation		 1969
Volumes
per Year		 1
Issues
per Year		 24
Founder Akadémiai Kiadó
Founder's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

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