Research context/concept

The behaviour of mineral components in energy source conversion processes (gasification, combustion) is of great interest from a technological point of view. In particular, process disruptions and the wear of plant components are often directly related to the behaviour of the ash/slag formed from the feedstock. Our aim is the chemical-mineralogical characterisation of the mineral components as well as the determination of chemical and physical material data in order to expand the understanding of ash/slag behaviour in energy source conversion processes and to develop new process engineering solutions. In addition to the analytical/experimental investigations, the behaviour of the mineral components in high-temperature processes is estimated on the basis of thermochemical calculations.

• Chemical-mineralogical characterisation of fuels and process samples (ash formers, slags, agglomerates, deposits)
• Viscosity, density, surface tension and wetting behaviour of slags
• Experimental investigation of slag formation and the interactions between solid, liquid and gas components. Solid, liquid and gas phase at high temperatures and different atmospheres (reducing/oxidising)
• Modelling of ash/slag behaviour based on chemical equilibrium (melting and solidification behaviour, mobilisation of contaminants and impurities, formation)
• Development and validation of kinetic models
• Development of novel gasification and pyrolysis technologies
• . and pyrolysis technologies
• Phosphorus recovery

Research methods

• Comprehensive laboratory analysis (see equipment)
• Trial plants on a laboratory to pilot plant scale
• Trial campaigns in large-scale plants
• Simulation-based investigations

Dr.-Ing. Stefan Guhl
Head of Department
+49 3731 39-4485
Stefan [dot] Guhl [at] iec [dot] tu-freiberg [dot] de (Stefan[dot]Guhl[at]iec[dot]tu-freiberg[dot]de)

M.Sc. Stefan Thiel
Deputy Head of Department
+49 3731 39-3774
Stefan [dot] Thiel [at] iec [dot] tu-freiberg [dot] de