This file was created by the TYPO3 extension
bib
--- Timezone: CET
Creation date: 2021-02-12
Creation time: 13-54-30
--- Number of references
10
article
Meyer2017
Determination of particle exchange rates at over-flow weirs in horizontal fluidised beds by particle tracking velocimetry
Particuology
2017
A3
10.1016/j.partic.2016.09.007
KMeyer
ABück
E.Tsotsas
article
Bueck2016
Influence of operation parameters on process stability in continuous fluidised bed layering with external product classification
Powder Technology
2016
300
37 - 45
Abstract 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.
7th International Granulation Workshop 2015: Granulation across the length scales
Layering, Fluidised bed, Process stability, External classification, Bifurcation analysis
A3
//www.sciencedirect.com/science/article/pii/S0032591016301127
0032-5910
http://dx.doi.org/10.1016/j.powtec.2016.03.019
A.Bück
C.Neugebauer
K.Meyer
S.Palis
E.Diez
A.Kienle
S.Heinrich
E.Tsotsas
article
Neugebauer2016
A dynamic two-zone model of continuous fluidized bed layering granulation with internal product classification
Particuology
2016
-
Abstract A dynamic two-zone model is proposed to address the formation of granulation and drying zones in fluidized bed layering granulation processes with internal product classification. The model assumes a constant volume for the granulation zone, but a variable overall volume for the fluidized bed to account for classified product removal. The model is used to study the effect of various process parameters on dynamics and process stability. Stability is shown to depend on the separation diameter of product removal and the flow rate of the injected liquid. A lower and upper range of separation diameters with stable process behavior are found. In an intermediate range instability in the form of self-sustained oscillations is observed. The lower stability boundary is in qualitative agreement with recent experimental observations (Schmidt, Bück, & Tsotsas, 2015); the upper boundary was reported in a theoretical paper by Vreman, Van Lare, and Hounslow (2009) based on a single zone model.
Layering granulation, Zone formation, Internal product classification, Population balance modeling, Stability analysis
A3
//www.sciencedirect.com/science/article/pii/S1674200116300967
1674-2001
http://dx.doi.org/10.1016/j.partic.2016.07.001
C.Neugebauer
S.Palis
A.Bück
E.Tsotsas
S.Heinrich
A.Kienle
article
Dreyschultze2015
Influence of zone formation on stability of continuous fluidized bed layering granulation with external product classification
Particuology
2015
23
1 - 7
Abstract Continuous fluidized bed layering granulation with external product classification and a sieve-mill cycle can show instability in the form of self-sustained nonlinear oscillations of the particle size distribution. In the present study, the stability and bifurcation analysis of this process is presented. The underlying process models explicitly account for compartmentalization of the fluidized bed into a granulation and a drying zone, which is an important feature of many technical processes. Implications for plant operations are discussed with the help of stability diagrams as a function of zone size, residence time within different zones, the addition of external seeds and particular properties of the sieve-mill cycle.
Fluidized bed, Granulation, Population balance, Stability, Bifurcation
A3
//www.sciencedirect.com/science/article/pii/S1674200115000863
1674-2001
http://dx.doi.org/10.1016/j.partic.2015.02.004
C.Dreyschultze
C.Neugebauer
S.Palis
A.Bück
E.Tsotsas
S.Heinrich
A.Kienle
article
Meyer2015
Dynamic Multi-Zone Population Balance Model of Particle Formulation in Fluidized Beds
Procedia Engineering
2015
102
1456 - 1465
Abstract In this work a generic multi-compartment, multi-zone population balance model (PBM) is developed which allows predicting the process dynamics of particle formation in a horizontal fluidized bed. It focuses on the particle size distribution (PSD) which is an important quality parameter in solids process industry. It is influenced by different factors, e.g. apparatus design (weir and nozzle assembly) and process conditions (mass flow rate), respectively. In this study the apparatus design by an over and under flow weir configuration, used separately or in combination, is investigated to obtain the product properties at the outlet of the apparatus. Simulation results show how characteristic product data depend on the process conditions and apparatus design. The obtained trends can then be used for an inverse apparatus design of horizontal fluidized beds to obtain particles with desired properties.
New Paradigm of Particle Science and Technology Proceedings of The 7th World Congress on Particle Technology
horizontal fluidized bed, spray granulation, population balance modeling, particle size distribution.
A3
//www.sciencedirect.com/science/article/pii/S1877705815002982
1877-7058
http://dx.doi.org/10.1016/j.proeng.2015.01.279
KatjaMeyer
AndreasBück
EvangelosTsotsas
inproceedings
Meyer2016a
Multi-compartment model for study of thermal effects during granulation in a continuously operated horizontal fluidized bed
2016
A3
Gifu (JP)
Proceedings of International Drying Symposium (IDS 2016)
KMeyer
ABück
ETsotsas
inproceedings
Neugebauer2016a
Influence of mill characteristics on stability of continuous layering granulation with external product classification
2016
38
1275-1280
A3
Computer Aided Chemical Engineering
CNeugebauer
SPalis
ABück
EDiez
SHeinrich
ETsotsas
AKienle
inproceedings
Neugebauer2016b
Control of multi-chamber continuous fluidized bed spray granulation
2016
A3
Proceedings of the International Congress on Particle Technology (PARTEC), April 19-21, Nürnberg
CNeugebauer
SPalis
ABück
SHeinrich
ETsotsas
AKienle
inproceedings
Meyer2014
Multi-zone model for layering granulation in horizontal fluidized beds
2014
A3
J. Andrieu und P. Perré
Proc. 19th International Drying Symposium (IDS 2014)
KMeyer
ABück
ETsotsas
inproceedings
Bueck
Influence of operation parameters on process stability in continuous fluidized bed layering with external product classification
A3
Sheffield (UK)
Proceedings of International Granulation Workshop
ABück
C.and Meyer, KNeugebauer
SPalis
EDiez
AKienle
SHeinrich
ETsotsas