Combustion kinetics and the heterogeneous ignition of pulverized coal
โ Scribed by T.F. Wall; V.S. Gururajan
- Publisher
- Elsevier Science
- Year
- 1986
- Tongue
- English
- Weight
- 357 KB
- Volume
- 66
- Category
- Article
- ISSN
- 0010-2180
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โฆ Synopsis
The reported combustion kinetics of pulverized coal from two types of experiments are compared: the first from measured rates of burnout at particle temperatures of 900-2200K and the second from an analysis based on the minimum gas temperatures at which coal ignites, corresponding to particle temperatures from 750-1350K. The kinetics from the two sources are shown to be complementary, supporting the analysis procedure for the ignition experiments which are based on the assumption of heterogeneous ignition.
๐ SIMILAR VOLUMES
Letters to the Editors on points of scientific interest related to combustion and flames are invited. The Editors do not hold themselves responsible for opinions expressed in correspondence. Anonymous contributions cannot be accepted.
Results of experiments to determine the extent of heterogeneous combustion in the rapid-devolatihzatton regime of fuel-rich bituminous and subbituminous coal-dust flames are reported. Major gas concentrations, gas and particle temperatures, and solids proximate and elemental compositions were measur
A detailed model for the steady-state combustion of a coal particle considering both surface oxidation and volatile combustion is presented. By solving the model equations in the absence of surface oxidation at various ambient gas temperatures, the homogeneous ignition temperature is determined as t