Dynamic simulation of interconnected solids processes

Project A: New physically based dynamic models of processing units

In chemical and energy technology of process engineering consist in most cases of multiple sub-steps, which are interconnected by streams of mass, energy and information. This interconnection influences significantly the operating behavior and especially the dynamics of the whole process. Thus for design and optimization of such processes, especially with respect to saving of resources and energy, it is sufficient to simulate the whole process as an entity.

This project deals with the fluidized bed spray granulation in a horizontal fluidized bed. During the process a solution or suspension will be sprayed onto cores of particles standing in fluidized conditions so that drying (solvent evaporation) will induce the particles to growth at the same time. The apparatus is divided in a variable number of chambers linked by weirs (or plates). Due to this different process conditions can be realized in one piece of equipment (e.g. heating and cooling). Weirs can be used as an overflow or underflow system. Their influence on particle residence time and classifying effect is an open issue. Particle transportation is highly influenced by the backflows from the next chamber. Experimental tests with a 2-D fluidized bed with a Particle Tracking algorithm will be used to fix this number. It is planned to compare the results with investigations at a 3-D fluid bed. The process conditions in each chamber influence the product quality next to their residence time. Predicting the granule properties in the best way the simulation of heat and mass transfer must be considered, includes drying. A population balance model describes the time development of particle size and shell be extended with important product properties like bulk density or porosity. Further, it is the general aim of the Program to develop numerical tools for the dynamic simulation of interconnected solids processes.

          

To reach this aim dynamic models have to be developed and to be implemented. Required are physically based predictive models, which allow a sufficiently accurate description of the process, have not too high requirements for computing resources and are widely applicable. Furthermore, they should not be restricted to certain materials or classes of materials and have to consistently treat the disperse properties of the solids.

              

The program is planned for next two years and is financed by the German Research Foundation (DFG).

Contact

Jun.-Prof. Dr.-Ing. Andreas Bück (Andreas.Bueck@ovgu.de)
M.Sc. Katja Meyer (Katja.Meyer@ovgu.de)
Termine
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
News
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