Reduction of energy input for fluidized bed processes
Not since the present time the optimization of technical processes concerning the energy demands is an important factor in the industry. Due to the permanent increasing prices of energy especially energy-intensive processes offer a great potential for energy savings. The conventional fluidized-bed is one of these processes whose process management offers promising opportunities for increasing energy efficiency. Therefore, this project is focused on the mathematical modeling and the experimental investigation of various methods to improve the energy expenditure of fluidized bed processes during particle formulation.

Modeling and Model Analysis

The objective of this actual project is the development of a general model including population balancing that allows the determination of total energy input of fluidized bed granulation process and the estimation of energy savings of new concepts in comparison to conventional operation conditions. In a second step a tool will be generated to compare model and experimental results of different concepts concerning energy efficiency and total costs by characteristic quantities.

Experimental Investigations

To determine the current demand of energy corresponding Benchmark experiments are carried out in a conventional fluidized-bed. In parallel, the experiments also serve to validate the modular process model. To improve the energy efficiency four different approaches are examined. Firstly, an optimized process management, which includes a temporal or local separation of sub-processes, will be determined. The temporal distribution of the sub-processes relates to the separation of granulation and drying. These sub-processes can follow each other or they can take place intermittently in the fluidized bed. The local separation is implemented through different zones within a continuous fluidized bed. Further, the alternative approach to heat the fluidized bed by electromagnetic induction as compared to the convective heat supply through the preheated gas phase is analyzed. In addition to these measures for process intensification a fourth concept of heat recovery within the process will be observed. This applies to the utilization of air outlet properties with regard to heat recovery by air outlet recirculation, moisture condensation and recuperation.

A final model analysis should show which concept or combination of different approaches has the highest potential for energy savings.


Jun.-Prof. Andreas Bück (
Prof. Lothar Mörl (
Dipl.-Ing. Torsten Hoffmann (
Dipl.-Ing. Vesselin Idakiev (
M.Sc. Lisa Mielke (
University Course Drying 2020
30.03.2020 - 02.04.2020 in Magdeburg
University Course Fluidization Technology 2019
04.11.2019 - 07.11.2019 in Hamburg
Appreciation of the research work at the chair with title page of the journal Processes (MDPI)
First project meeting Wigratec InterSpiN
Award for Maciej Jaskulski
Cluster WIGRATEC enters the next round
Arun S. Mujumdar Medal for Prof. E. Tsotsas
Award for best oral presentation
Award for best oral presentation for Christoph Neugebauer on Population Balance Modeling Conference 2018
Faculty Prize 2018
Award for Prof. E. Tsotsas
Honorary Professorship of UCTM, Sofia, for Prof. Tsotsas
University Course Drying 2018
19. March -- 22. March 2018 in Magdeburg
University Course Fluidization Technology 2017
6. - 9. November 2017 in Hamburg
Award on Conference
Best Research Award for Sayali Zarekar on IDS in Gifu, Japan
Award on Conference
Best Poster Award for Christian Rieck at PARTEC 2016 in Nuremberg, Germany
Award on Conference
Best poster award for Vesselin Idakiev at national conference
Award on Conference
Best Presentation Awards on Nordic Baltic Drying Conference 2015
ECCE 2015
27. September - 01. October 2015 in Nice, France
Granulation Workshop 2015
1st July - 3rd July 2015 in Sheffield, UK
University Course Drying 2016
29. March -- 01. April 2016 in Magdeburg
Extension of the Research Training Group 1554
Extension of the funding period for 4.5 years
Award on annual conference
Award for best poster presentation goes to Maryam Dadkhah
Modern Drying Technology Vol. 3
Prof. E. Tsotsas in CES Top 20 Reviewer 2010
Award on Asia Pacific Drying Conference
VDI Ehrenring für Jun.-Prof. Mirko Peglow
University Course Drying 2014
Fundamentals and Applications of Drying Technology