Influence of operation parameters on process stability in continuous fluidised bed layering with external product classification

Journal
Powder technology  
Volume
300
Start Page
37
End Page
45
Citation
Powder Technology (300): 37-45 (2016-10-01)
Publisher DOI
10.1016/j.powtec.2016.03.019
Scopus ID
2-s2.0-84964329348
Publisher
Elsevier Science
Several studies—theoretical and experimental—show that continuous fluidised bed layering granulation with external classification can show instability in the form of self-sustained oscillations. Recent results show that the process stability does not only depend on product-related process parameters but also on the formation of functional zones in the fluidised bed chamber, especially the formation of a spray and drying zone. In this work a systematic evaluation of zone formation in different apparatus designs (e.g., top- and bottom-spray in cylindrical apparatuses) and its influence on process stability is performed, resulting in a stability regime map for the different apparatus designs and key operation parameters.
Subjects
Bifurcation analysis
External classification
Fluidised bed
Layering
Process stability
DDC Class
600: Technik
More Funding Information
Funding by the German Research Foundation (DFG) as part of the priority program “Dyn-Sim-FP” (DFG-SPP 1679). Additional funding was provided by the German Ministry of Science and Education (BMBF) as part of the InnoProfile-Transfer project NaWiTec (03IPT701X).