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- Title
Kinetics Analysis of Heterogeneous Oxidation of Coal Particles in Supercritical Water.
- Authors
Ma, Honghe; Wang, Shuzhong; Zhou, Lu; Ma, Suxia; Fan, Jiang; Xu, Donghai
- Abstract
Little research has been conducted on the heterogeneous kinetics of coal oxidation in supercritical water (SCW). Therefore, the oxidation of coal particles in SCW coupled with heat and mass transfer was investigated. The real coal particle temperature was estimated in terms of a simplified heat balance. With increasing particle temperature, the rate-limiting step of the oxidation reaction gradually changed from the surface reaction to the mass transfer of oxygen. According to this result, the reaction rate model was built. The model could be used to predict the quantitative relationship among the particle size, the particle temperature, and the time to complete oxidation.
- Subjects
ANALYSIS of coal; OXIDATION kinetics; SUPERCRITICAL water; MASS transfer; HEAT transfer; SURFACE reactions
- Publication
Chemical Engineering & Technology, 2015, Vol 38, Issue 1, p91
- ISSN
0930-7516
- Publication type
Article
- DOI
10.1002/ceat.201400278