Vibrated beds of powders: A new mathematical formulation
โ Scribed by Tetsuo Akiyama; Takeshi Naito
- Publisher
- Elsevier Science
- Year
- 1987
- Tongue
- English
- Weight
- 740 KB
- Volume
- 42
- Category
- Article
- ISSN
- 0009-2509
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โฆ Synopsis
A new mathematical formulation was made to deal with the compressible gas model that represents the vibrated particle bed. A novel boundary condition, which incorporates the equation of motion of the bed and the equation ofcontinuity in the air gap between the bed and the vessel base, was introduced. This made it possible to reduce three differential equations, hitherto treated as governing equations that characterize the vibrated particle bed, to a single partial differential equation with pertinent initial and boundary conditions. Experiments were also conducted to assess the validity of the model. Satisfactory agreements between the predicted and measured values have been observed within limited parameter ranges.
๐ SIMILAR VOLUMES
Coal was pyrolysed in hydrogen in a powder-particle fluidized bed at atmospheric pressure. The coal powder was continuously fed into the bed, in which CoMo/Al,O, catalyst particles or silica sand particles were fluidized. The effect of silica sand on the secondary reactions of volatile matter was qu