Lehrstuhl für Mechanische Verfahrenstechnik (MVT)

Bulk Solids Handling

The handling of granular material concerns dozens of billion tons of material worldwide. Approximately 50% of all goods once existed as granular form during their industrial production. The quality of the end product is strongly affected by the overall handling of the particles during the production processes.
The Institute of Particle Process Engineering started research in bulk solids handling in 1972, which is currently carried on by the EU Interreg project “PowderReg”. The project aims to optimize industrial processes with granular materials – from storage to the end product. This includes experimental and simulation-aided investigations of powder flow properties under high stresses (shear cells) and for free flowing regimes (powder rheometer) to predict flow profiles and mass flow rates during silo discharge.
The project “Analysis of the fluidization and shear conditions in rotor fluidized beds under dry and wet conditions" investigates the influence of liquids and particle shape on particle dynamics in a dense sheared gas-solid flow. Granulation and coating are modeled with a CFD-DEM approach. Using the example of a rotor fluidized bed, detailed experimental investigations of the particle dynamics are carried out using a novel MPT measuring technique under dry and wet conditions (spraying liquids).


Team


Research Areas




Recent Pubications (2018-2020)

  • R. Hesse, F. Krull, S. Antonyuk: Experimentally Calibrated CFD-DEM Study of Air Impairment during Powder Discharge for Varying Hopper Configurations, Powder Technology 372 (2020), 404-419, doi.org/10.1016/j.powtec.2020.05.113
  • F. Krull, R. Hesse, P. Breuninger, S. Antonyuk: Impact behaviour of microparticles with micro-structured surfaces: Experimental study and DEM simulation, Chemical Engineering Research and Design 135 (2018), 175-184, doi.org/10.1016/j.cherd.2018.05.033

 

 


Laboratory Equipment

Schulze ring shear cell RST-01

Heating/cooling shear cells for varying conditions

Jenike shear cell

Availability of a variety of wall insertions for wall friction measurements and dif-ferent sizes of shear cells

Brookfield power flow tester

 

 

WIPOTEC 3000

High speed/high precision scale for discharge experiments

ISO 697 Bulk density measurement

 

 

Jolting volumeter STAV2003

Tapping bulk density

Several flexible silo discharge set-ups

 

 

Schulze time consolidation table

Measurement of particle / droplet trajectories

SEM

 

 

Ultra-Pycnometer (Model 1000T, Quantachrome)

Measurement of material density

Laser diffcration

 

 


Simulation and Numerical Tools

  • ANSYS CFX, ANSYS Fluent    
  • OpenFOAM    
  • LIGGGHTS / CFDEMcoupling    
  • EDEM solutions    
  • TensorFlow    
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