Ignition and combustion of single, levitated char particles
β Scribed by Valerio Cozzani; Luigi Petarca; Sandro Pintus; Leonardo Tognotti
- Publisher
- Elsevier Science
- Year
- 1995
- Tongue
- English
- Weight
- 933 KB
- Volume
- 103
- Category
- Article
- ISSN
- 0010-2180
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β¦ Synopsis
particle temperature when laser is turned off (K) particle temperature (K) time (s) ignition delay time (s) global reaction rate (gC/s) bulk oxygen molar fraction surface oxygen molar fraction Symbols adimensional temperature difference oxygen stoichiometric coefficient particle apparent density (g/cm 3) initial particle apparent density (g/cm 3) adimensional induction time number of moles of CO 2 per mol of carbon reacted
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A mathematical model is developed that represents a first approximation of the dynamics of the coal char combustion. The model determines a range of particle sizes and gas temperatures where oscillation can occur and propagating spherical waves surround the particle. It is also possible to compute t