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Minimum fluidization velocities for supercritical water fluidized bed within the range of 633–693K and 23–27MPa
- Source :
-
International Journal of Multiphase Flow . Mar2013, Vol. 49, p78-82. 5p. - Publication Year :
- 2013
-
Abstract
- Abstract: Supercritical water fluidized bed is a new reactor concept for biomass gasification. In this paper, an experimental study on the hydrodynamics of a supercritical water fluidized bed was conducted. The frictional pressure drops of a fixed bed and a fluidized bed were measured for a temperature ranging from 633 to 693K and pressure ranging from 23 to 27MPa. The results show that the Ergun formula for calculating the frictional pressure drop of a fixed bed can still be applied in supercritical water conditions. The average deviation between Ergun formula and experiment results is 13.3%. A predicting correlation for the minimum fluidization velocity in a supercritical water fluidized bed was obtained based on the experimental results of a fixed bed and the fluidized bed pressure drop. The average error between the correlation and experiment results was about 3.1%. The results in this paper are useful for the design of SCW fluidized bed. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 03019322
- Volume :
- 49
- Database :
- Academic Search Index
- Journal :
- International Journal of Multiphase Flow
- Publication Type :
- Academic Journal
- Accession number :
- 84366991
- Full Text :
- https://doi.org/10.1016/j.ijmultiphaseflow.2012.10.005