Drying in a pulsed-fluid bed with relocated gas stream
- Academy of Economics, Wroclaw (Poland). Dept. of Process Equipment and Engineering
Results of studies on cooling and drying of powdery and granulated material in a pulsed-fluid bed (PFB) system with relocated gas stream presented here are related to hydrodynamics and kinetics of these processes. Generalized results in the form of dimensionless equations can be used to determine basic process parameters such as drying time, heat transfer coefficient, pulsed-fluidization velocity, pressure drop, etc. Results of experimental investigations, supplemented with experiments carried out in a prototype industrial equipment, can be useful for dryer scale-up and are recommended for designing. A comparison of technical and economic parameters of these dryers with the parameters of classical fluid-bed dryers shows many advantages of PFB systems, including, among others, reduced gas consumption, uniform bed structure and stability of final parameters of the product. Positive estimation of the operation and technological parameters suggests that PFB dryers with relocated gas stream can be applied successfully in industrial practice.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 260749
- Journal Information:
- Drying Technology, Journal Name: Drying Technology Journal Issue: 5 Vol. 14; ISSN DRTEDQ; ISSN 0737-3937
- Country of Publication:
- United States
- Language:
- English
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