Koks-Agglomeration - Bed agglomeration in bubbling fluidized beds during gasification of low-rank biomass feedstock

Third party funded individual grant


Project Details

Project leader:
Prof. Dr.-Ing. Jürgen Karl


Contributing FAU Organisations:
Lehrstuhl für Energieverfahrenstechnik

Funding source: DFG-Einzelförderung / Sachbeihilfe (EIN-SBH)
Acronym: KoksAgglomeration
Start date: 01/12/2017
End date: 31/12/2020


Research Fields

Combustion and gasification of biomass
Lehrstuhl für Energieverfahrenstechnik


Abstract (technical / expert description):


The research project “KoksAgglomeration”, funded by the Deutsche Forschungsgemeinschaft (DFG) aims at the agglomeration tendency of solid biofuels during bubbling fluidized bed gasification. Special emphasis lies on the influence of residual carbon on agglomerate boundary layers.



The principle goals are




  • the improvement of existing and development of new agglomeration detection techniques especially regarding the formation of initial particle coatings, based on high-frequent pressure analysis;


  • the deduction of fuel and temperature-dependent agglomeration criteria. For this purpose, our project partner HI-ERN conducts Lattice-Boltzmann simulations of particle interactions (e.g. bed material collisions) with respect to environmental conditions, ash properties and residual carbon.



Eventually, this leads to a better understanding of the underlying effects and prevailing agglomeration mechanisms during fluidized bed gasification, potentially facilitating a transferable toolkit for the prediction of bed agglomeration in industrial plant setups.


External Partners

Helmholtz-Institut Erlangen-Nürnberg für Erneuerbare Energien (HI ERN)

Last updated on 2019-08-01 at 13:41