The 12th International Conference on Fluidization - New Horizons in Fluidization Engineering
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May 13-17, 2007
Top-spray fluid bed coating experiments of 500 g sodium sulphate cores (180 – 300 μm) have been conducted in a small-scale single-spray nozzle GEA Strea-1 fluid bed. The process has been scaled-up to a bed load of 4 kilos in a single-spray nozzle Niro MP-1 fluid bed testing different scaling laws for comparison. Results indicate clearly that up-scaling using a drying force parameter (combining bed temperature with bed relative humidity) as well as a droplet related relative parameter is a promising alternative to common fluid bed scaling principles.
Peter Dybdahl Hede, Poul Bach, and Anker D. Jensen, "Experimental Validation of Macro- and Micro-Level Scaling Laws in Small- and Medium-Scale Top-Spray Fluidised Bed Coaters" in "The 12th International Conference on Fluidization - New Horizons in Fluidization Engineering", Franco Berruti, The University of Western Ontario, London, Canada; Xiaotao (Tony) Bi, The University of British Columbia, Vancouver, Canada; Todd Pugsley, University of Saskatchewan, Saskatoon, Saskatchewan, Canada Eds, ECI Symposium Series, (2007). http://dc.engconfintl.org/fluidization_xii/101