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Combustion characteristics and kinetics of DPR Korea's anthracite in O2/N2 and O2/CO2 atmosphere.
- Source :
-
Journal of Thermal Analysis & Calorimetry . Nov2022, Vol. 147 Issue 22, p12897-12905. 9p. - Publication Year :
- 2022
-
Abstract
- In O2/N2 and O2/CO2 atmospheres with oxygen concentrations of 21%, 30%, and 50%, combustion characteristics index, apparent activation energy, and kinetics models of D.P.R Korea's anthracite (KA) were estimated and compared. At the same oxygen concentration condition, combustion characteristics of KA in O2/CO2 atmosphere were more clearly reduced than those in O2/N2 atmosphere. And the ignition, burnout and comprehensive combustion indexes in 21% O2/79% N2 (general air) and 30% O2/70% CO2 atmosphere were almost identical. As a result of estimating the apparent activation energy, the lowest average of it was recorded in both O2/N2 and O2/CO2 atmosphere at 30% oxygen concentration among three oxygen concentration. Besides, it was found that when KA was burned in an O2/CO2 atmosphere condition with an oxygen concentration of 30%, the average apparent activation energy was the smallest. Kinetics models under various heating rates were estimated using the Kissinger–Akahira–Sunose (KAS) method. As a result of comparison, the consistency between 21% O2/79% N2 (general air) and 30% O2/70% CO2 was further confirmed in kinetics model. [ABSTRACT FROM AUTHOR]
- Subjects :
- *ATMOSPHERE
*ACTIVATION energy
*COMBUSTION kinetics
*COMBUSTION
*NITROGEN
Subjects
Details
- Language :
- English
- ISSN :
- 13886150
- Volume :
- 147
- Issue :
- 22
- Database :
- Academic Search Index
- Journal :
- Journal of Thermal Analysis & Calorimetry
- Publication Type :
- Academic Journal
- Accession number :
- 159501191
- Full Text :
- https://doi.org/10.1007/s10973-022-11464-8