This file was created by the TYPO3 extension bib --- Timezone: CET Creation date: 2021-02-12 Creation time: 13-06-05 --- Number of references 51 article Keimer2017 Journal of Differential Equations 2017 263 7 4023-4069 Elsevier A.Keimer article Kovacevic2016b Journal of Crystal Growth 2017 T.Kovačević V.Wiedmeyer J.Schock A.Voigt F.Pfeiffer K.Sundmacher H.Briesen article Kotalczyk2016c <prt>Chemie Ingenieur Technik</prt> 2016 88 9 1365--1366 1522-2640 10.1002/cite.201650130 G.Kotalczyk F. E.Kruis article Kotalczyk2016 <prt>Chemie Ingenieur Technik</prt> 2016 88 9 1365--1366 1522-2640 10.1002/cite.201650130 G.Kotalczyk F. E.Kruis article Bueck2016 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 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, &amp; 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 Kovacevic2016 Cryst. Growth Des. 2016 16 5 2685-2699 http://dx.doi.org/10.1021/acs.cgd.5b01806 10.1021/acs.cgd.5b01806 TijanaKovačević JonathanSchock FranzPfeiffer HeikoBriesen article Barrenechea2016 SIAM J. Numer. Anal. 2016 54 4 2427--2451 10.1137/15M1018216 G. R.Barrenechea V.John P.Knobloch article Beinert2015 Chemical Engineering Science 2015 134 648--662 A6 Elsevier SBeinert GFragnière CSchilde AKwade article Kovacevic2015 Chem. Eng. Sci. 2015 127 2685–2699 C1 10.1021/acs.cgd.5b01806 T.Kovačević H.Briesen article Dreyschultze2015 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 Palis2015 Procedia Engineering 2015 102 133 - 141 Abstract In this contribution control of continuous fluidized bed spray granulation processes with external product classification is studied. From a practical point of view control schemes being easy to implement and maintain using standard process control systems are preferable. Hence, the focus will be on standard <prt>PI</prt> control structures. In order to account for variations and uncertainties in the process an additional tuning procedure should be included. Here, an optimization based online controller adaptation scheme called iterative feedback tuning (ITF) will be investigated. New Paradigm of Particle Science and Technology Proceedings of The 7th World Congress on Particle Technology fluidized bed spray granulation, control, auto-tuning; A3 //www.sciencedirect.com/science/article/pii/S1877705815001162 1877-7058 http://dx.doi.org/10.1016/j.proeng.2015.01.115 StefanPalis ChristianDreyschultze ChristophNeugebauer AchimKienle article Feinauer2015 Materials Characterization 2015 106 123--133 http://dx.doi.org/10.1016/j.matchar.2015.05.023 10.1016/j.matchar.2015.05.023 J.Feinauer A.Spettl I.Manke S.Strege A.Kwade A.Pott V.Schmidt article Beinert2014 Chemical Engineering &amp;amp; Technology 2014 37 770-778 S.Beinert C.Schilde G.Gronau A.Kwade article Metzger2014 Chemical Engineering Science 2014 10.1016/j.ces.2014.12.056 LukasMetzger MatthiasKind article Kruggel-Emden2014 Chemical Engineering &amp;amp; Technology 2014 37 5 847&amp;amp;ndash;856 henomena related to sieving of non-spherical particles are investigated numerically in two batch apparatuses and on a horizontally aligned continuous sieve by particle-based simulation approaches in the framework of the discrete element method. The feed material is approximated by complex-shaped particles composed of clustered spheres. Comparisons are made with regard to the passage through the screen as well as the segregation and transportation on the screen. Results for passage are compared to data from literature, where simulations with spherical particles were performed of a laboratory-scale sieve operated with nonspherical quarry rock particles. Additionally, variations in screen inclination are investigated. Experimental results are matched by the simulations. A distinctive influence of particle shape on flow rates and residence times is identified. Discrete element method, Non-spherical particles, Sieving, Simulation 10.1002/ceat.201300649 HaraldKruggel-Emden FrederikElskamp article Kovacevic2014 Cryst. Growth Des. 2014 14 4 1666-1675 C1 http://pubs.acs.org/doi/abs/10.1021/cg401780p 10.1021/cg401780p TijanaKovačević AlexanderReinhold HeikoBriesen article Elskamp2014 Advanced Powder Technology 2014 In the recent past detailed particle-based simulation approaches such as the discrete element method (DEM) have become popular in addition to phenomenological models for the design and optimization of operating parameters of screening processes. As phenomenological process models, a large number of probabilistic and kinetic approaches of differing complexity are available which mostly provide information on the screening rate or efficiency. So far a review and comparative benchmarking of the various available screening process models has not been performed, although they are of high relevance, especially in industrial applications, due to their simplicity and easy use. To perform the benchmarking of batch screening process models, it is not relied on experimental investigations, but on detailed DEM-simulations involving both spherical and non-spherical particles in the investigation here. The DEM-simulations allow examining different particle characteristics such as size, shape, friction, as well as overall mass and size distribution. In addition, screen characteristics such as screen dimensions and surface as well as operational parameters including vibration frequency, stroke angle and amplitude are considered. On the basis of the DEM-simulations screening efficiencies are obtained which allow the adjustment and thereon benchmarking of the process models through parameters such as the residual particle mass on the screen. Batch screening; Discrete element method (DEM); Arbitrary shaped particles; Process models accepted 10.1016/j.apt.2014.11.001 FrederikElskamp HaraldKruggel-Emden article Keimer2018 Journal of Mathematical Analysis and Applications eingereicht 2018 A.Keimer inproceedings Kotalczyk2016d 2016 8 pages AIChE <prt>AIChE annual meeting</prt> 978-0-8169-1097-7 GregorKotalczyk IvanSkenderovic Frank EinarKruis inproceedings Kotalczyk2016e 2016 <prt>International Congress on Particle Technology (PARTEC)</prt> GregorKotalczyk Frank EinarKruis inproceedings Neugebauer2016a 2016 38 1275-1280 A3 Computer Aided Chemical Engineering CNeugebauer SPalis ABück EDiez SHeinrich ETsotsas AKienle inproceedings Neugebauer2016b 2016 A3 Proceedings of the International Congress on Particle Technology (PARTEC), April 19-21, Nürnberg CNeugebauer SPalis ABück SHeinrich ETsotsas AKienle inproceedings Kotalczyk2016a 2016 8 pages AIChE <prt>AIChE annual meeting</prt> 978-0-8169-1097-7 GregorKotalczyk IvanSkenderovic Frank EinarKruis inproceedings Kotalczyk2016b 2016 <prt>International Congress on Particle Technology (PARTEC)</prt> GregorKotalczyk Frank EinarKruis inproceedings Kovacevic2016a 2016 C1 Proceedings PARTEC: International Congress of Particle Technology, Nürnberg T.Kovačević H. (Briesen inproceedings Kotalczyk2015a 2015 <prt>10th European Congress of Chemical Engineering (ECCE)</prt> GregorKotalczyk Frank EinarKruis inproceedings Kovacevic2014a 2014 C1 Proceedings 19th International Symposium on Industrial Crystallization T.Kovačević A.Reinhold H.Briesen inproceedings Metzger2014a 2014 Proc. 19th International Symposium on Industrial Crystallization Toulouse, France ISIC 19 16.9 - 19.09. 2014 LukasMetzger MatthiasKind inproceedings Metzger2014b 2014 1A, Applications in CFD pp. V01AT03A013 Proc. 4th Joint US-European Fluids Engineering Division Summer Meeting Chicago, Illinois 4th Joint US-European Fluids Engineering Division Summer Meeting 03.8 - 07.08. 2014 10.1115/FEDSM2014-21547 LukasMetzger MatthiasKind inproceedings Komossa2014 2014 Proceedings of the 11th Int. Conf. on Heat Transfer, Fluid Mechanics and Thermodynamics South Africa 11th Int. Conf. on Heat Transfer, Fluid Mechanics and Thermodynamics July 20-23, 2015 submitted H.Komossa S.Wirtz V.Scherer A.I.Nafsun F.Herz E.Specht inproceedings Bueck A3

Sheffield (UK)

Proceedings of International Granulation Workshop ABück C.and Meyer, KNeugebauer SPalis EDiez AKienle SHeinrich ETsotsas inproceedings Palis 33 625—630 A3 J.J. Klemes and P.S. Varbanov and P. Yen Liew Computer Aided Chemical Engineering, Bd. 33, SPalis CDreyschultze AKienle techreport Barrenechea2016a 2016 2016-06 in revision (Mathematical Models and Methods in Applied Sciences) Nec\v<prt>a</prt>s Center for Mathematical Modeling Preprint G. R.Barrenechea V.John P.Knobloch unpublished Kotalczyk2016f 2016 GregorKotalczyk IvanSkenderovic Frank EinarKruis unpublished KotalczykOctober202016 GregorKotalczyk Frank EinarKruis unpublished KotalczykSeptember122016 GregorKotalczyk JhernaDevi Frank EinarKruis misc Kotalczyk2015 2015 <prt>10th European Congress of Chemical Engineering (ECCE)</prt> GregorKotalczyk Frank EinarKruis misc Fragniere2015 2015 oral presentation A6 European Symposium on Comminution and Classification, Göteborg, Schweden GretaFragnière AOverbeck StefanBeinert CartsenSchilde ArnoKwade misc Kovacevic2015b 2015 oral presentation C1 European Congress on Chemical Engineering (ECCE) 10, Nice, France. T.Kovačević N.Sager H.Briesen misc Kovacevic2015a 2015 talk C1 ECCE , T.Kovačević N.Sager H.Briesen misc Kovacevic2015c 2015 poster award C1 Summer School - Crystal Shape Engineering, Zurich, Switzerland , T.Kovačević HBriesen misc Komossa2014a 2014 DGMK-Fachbereichstagung: Konversion von Biomassen Rotenburg, Germany DGMK-Fachbereichstagung: Konversion von Biomassen Mai 12-14, 2014 H.Komossa D.Höhner S.Wirtz V,Scherer E.Specht F.Herz misc Elskamp2014a 2014 For the design of screening processes detailed particle-based simulation approaches such as the discrete element method and various simpler phenomenological models are available. Among the latter, different probabilistic and kinetic models have been proposed and further extended. So far a benchmarking of the various available screening process models has not been performed. Therefore, a selection of screening process models is reviewed and benchmarked numerically by using detailed discrete element simulations of batch screening processes involving spherical and complex shaped particles in this investigation. Different particle characteristics such as size, shape, as well as overall mass are examined. In addition operational parameters including vibration frequency, stroke angle and amplitude are considered. The comparison is performed based on the stratification ability and parameters like the screening efficiency which are calculated over time. This comparative study will form the basis for the extension ofphenomenological models to represent dynamic processes during batch screening. Screening; Discrete element method; Complex shaped particles; Process models 7th World Congress on Particle Technology Beijing 7th World Congress on Particle Technology 2014 FrederikElskamp HaraldKruggel-Emden HendrikKomossa VictorScherer ManuelHennig UlrichTeipel misc Gronau2014 2014 Comminution Kapstadt, Südafrika Comminution 07.-14. April 2014 G.Gronau S.Beinert C.Schilde A.Kwade misc Metzger2014c 2014 ProcessNet-Jahrestreffen der Fachgruppe Kristallisation, Münster Münster ProcessNet-Jahrestreffen der Fachgruppe Kristallisation 27.3 - 28.3. 2014 LukasMetzger mKind misc Hennig2014 2014 Das dynamische Verhalten des Trenngrades von Schwingsieben bei Änderung des Massenstroms und der Partikelgrößenverteilung des Aufgabeguts wird untersucht. Auf der Basis vorhandener Modelle für den statischen Betrieb soll das dynamische Verhalten anhand der zeitabhängigen Trennfunktion analysiert werden. Hierfür werden im Rahmen zweier DFG-Teilprojekte des SPP 1679 „Dynamische Simulation vernetzter Feststoffprozesse“ zwei sich ergänzende Ansätze verfolgt. An der Technischen Hochschule Nürnberg wird die Partikelbewegung auf dem Siebboden untersucht. Hierzu wird den Einzelpartikeln mithilfe einer Hochgeschwindigkeitskamera eine Bahnkurve zugeordnet und der Einfluss der Eingangsparameter auf die Trennfunktion analysiert. Für die Parameterstudie wird ein Kreisschwingsieb eingesetzt. Der dynamische Einfluss bei sprungartiger und linearer Änderung des Massenstroms und der Dispersitätseigenschaften im Aufgabegut wird analysiert. In Kombination wird ein kinetisches oder wahrscheinlichkeitstheoretisches Modell für den dynamischen Betrieb ermittelt. An der Ruhr-Universität Bochum wird parallel die Modellierung der Siebklassierung mittels DEM durchgeführt. Wichtig ist die Parametervalidierungmittels realer Partikelbewegung und Trennfunktionen. Mithilfe von DEM-Simulationen sind Parameterstudien für Materialien mit unterschiedlichen Dispersitätseigenschaften möglich. DECHEMA-Jahrestagung Aachen, Deutschland DECHEMA-Jahrestagung 2014 10.1002/cite.201450646 ManuelHennig FrederikElskamp HaraldKruggel-Emden UlrichTeipel misc Kruggel-Emden2014a 2014 Continuous screening processes are of high relevance in industrial applications in case that a bulk solid isseparated based on particle sizes. Besides experimental investigations, process models or discrete element simulations can be applied for the numerical modeling of screening. In the investigation here a sensitivity analysis is performed for varying amplitudes, frequencies, stroke angles and feed rates of a continuous lab scale screening process. Thereby, a selection of representative particle shapes is considered and its influence on the throughput is analyzed. Continuous screening; Discrete element method; Complex shaped particles 12th International Conference of Numerical Analysis and Applied Mathematics Rhodos, Griechenland 12th International Conference of Numerical Analysis and Applied Mathematics 2014 HaraldKruggel-Emden FrederikElskamp misc Kruggel-Emden2013 2013 Sieving of complex shaped particles is investigated numerically in a batch and a horizontally aligned continuous sieving apparatus by discrete element simulations. The feed material is approximated by complex shaped particles composed of clustered spheres. Comparisons are made with regard to the passage through the screen. Results are compared to data from literature, where simulations of spherical particles were performed. Simulation, Sieving, Discrete Element Method, Complex shaped particles 13th European Symposium on Comminution &amp;amp; Classification ESCC Braunschweig 13th European Symposium on Comminution &amp; Classification ESCC 2013 HaraldKruggel-Emden FrederikElskamp misc Schilde2013 2013 13th European Symposium on Comminution &amp;amp; Classification, Braunschweig Braunschweig 13th European Symposium on Comminution &amp; Classification 13th European Symposium on Comminution &amp; Classification C.Schilde S.Beinert G.Gronau A.Kwade misc Kovacevic C1 BIWIC 2016 - 23rd International Workshop on Industrial Crystallization T.Kovačević V.Wiedmeyer J.Schock F.Pfeiffer A.Voigt K.Sundmacher H.Briesen