Hydrodynamics and mass transfer in a spouted bed dryer
Journal Article
·
· Drying Technology
The disposal of sludge generated by water treatment plants poses major financial and environmental problems. Drying of the sludge is an essential part of any disposal process which may include incinerating, landfilling or upgrading. In the present study, experiments were carried out to investigate the drying of sludge in a spouted bed and to characterize the hydrodynamics and mass transfer mechanisms. The effect of bed moisture content on the minimum spouting velocity (U{sub ms}) was examined for sludge granules. U{sub ms} was found to increase with increasing the moisture content of the sludge particles. The gas phase mass transfer coefficient in the dryer was determined using porous calcined alumina particles and the results were compared with predictions by correlations available in the literature. The existing correlations gave poor predictions for the mass transfer coefficient. A new correlation for the mass transfer coefficient in a spouted bed dryer was developed based on the experimental results.
- Research Organization:
- Ecole Polytechnique de Montreal, Quebec (CA)
- OSTI ID:
- 20082159
- Journal Information:
- Drying Technology, Journal Name: Drying Technology Journal Issue: 1-2 Vol. 18; ISSN DRTEDQ; ISSN 0737-3937
- Country of Publication:
- United States
- Language:
- English
Similar Records
Effect of bed height on simultaneous heat and mass transfer in a two-dimensional spouted bed dryer
Experimental analysis of a mechanically stirred spouted bed dryer
Simulation of transport dynamics in fluidized-bed dryers
Journal Article
·
· International Communications in Heat and Mass Transfer; (United States)
·
OSTI ID:6259269
Experimental analysis of a mechanically stirred spouted bed dryer
Journal Article
·
Fri Dec 31 23:00:00 EST 1999
· Drying Technology
·
OSTI ID:20082160
Simulation of transport dynamics in fluidized-bed dryers
Journal Article
·
Thu May 01 00:00:00 EDT 1997
· Drying Technology
·
OSTI ID:516863