Combustion of single carbon particles in a fast fluidized bed of fine solids
β Scribed by P. Basu; P.K. Halder
- Publisher
- Elsevier Science
- Year
- 1989
- Tongue
- English
- Weight
- 957 KB
- Volume
- 68
- Category
- Article
- ISSN
- 0016-2361
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β¦ Synopsis
Spherical electrode carbon particles were used to study the mechanism of combustion of coarse carbon particles (diameter between 5 and 9mm) in a circulating fluidized bed. Experiments were conducted in a 102mm diameter and 5.5m tall circulating fluidized bed made of stainless steel. Tests on burning rates indicate the combustion to be a combined process of chemical kinetics and mass transfer. A model is proposed to predict the instantaneous diameter, particle temperature and burning rate of a single carbon particle as it burns in a fast bed of fine solids.
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Absbmet-The problem of the bur&ng of carbon particles in a fluId& bed m which oxygen and carbon dtoxlde react at the surface of the park&s and the carbon monolude produced bums m both the dilute phase and mterstlhal gas of the dense phase usmg the DavIdson-HarrIson model IS solved The numerkal solut
In this study back-propagation, feed-forward neural networks are applied to estimate mass-transfer parameters in fast fluidized beds of fine solids. These networks are trained to predict mass-transfer rates using measurements of the sublimation rate of coarse naphthalene balls in fast fluidized beds