Research area 2 focuses on the thermochemical oxidation in order to release renewable energy. This covers a wide range of scales, including the single particle, particle groups and complex flows.

Milestones

  • Setup of a rough kinetic database for the heterogeneous oxidation from parameter studies
  • Setup of a detailed kinetic database for the heterogeneous oxidation
  • Comprehensive analysis of coupled transport and oxidation processes
  • Complete all steps along the process chain up to a semi-technical scale

Combustion of iron vs. aluminium powder

In order to enable effective separation of the solid metal oxides, e.g. with conventional cyclones, the particle size must not change much during oxidation. In addition, metal leakage because of metal oxide nanoparticles must be avoided. Iron is the element of choice here.

Coordination of the research area

  Name Contact
Prof. Dr. Andreas Dreizler
+49 6151 16-28920
Prof. Dr.-Ing. Christian Hasse
+49 6151 16-24142

Projects in research area 2

Experimental investigation of particle clouds

Experimental investigation of iron and iron oxide particle clouds during thermo-chemical oxidation and reduction (B. Böhm)

Kinetic model

Development of a kinetic model based on experimental investigations of the thermochemical reduction/oxidation of iron oxide/iron (O. Deutschmann)

Laminar and turbulent flow

Experimental investigation of thermochemical oxidation of iron particle combustion under laminar and turbulent flow conditions (A. Dreizler)

Fluidized bed

Thermo-chemical reduction/oxidation in fluidized beds (B. Epple)

Nanoparticle formation

Modeling and numerical investigations of nanoparticle formation during oxidation of iron particles (F. Ferraro)

Transport processes of microparticles (immersed boundary method)

Evaluation of transport processes of single iron-based microparticles using immersed boundary method (B. Frohnapfel)

Laser-induced plasma spectroscopy (LIBS)

None-intrusive, time-resolved diagnostics of iron based micro particles undergoing thermo-chemical reduction or oxidation (D. Geyer)

Numerical investigation

Numerical investigation of laminar and turbulent iron dust/air combustion (C. Hasse)

Mössbauer spectroscopy

Influence of oxidation and reduction conditions on iron signatures as followed by Mössbauer spectroscopy (U. Kramm)

Structure-property relationships (X-Ray Scattering)

Structure-property relationships of iron particles and its oxides (H. Nirschl)

Kinetic model (CFD simulations)

Kinetic model development for iron particle thermo-chemical reduction/oxidation and investigations of dust firing in CFD simulations (U. Riedel)

Detailed single particle model

Modeling of the reaction-transport coupling for single, iron-based microparticles undergoing thermo-chemical reduction or oxidation (A. Scholtissek)

DNS iron particle ignition in turbulent flow

Carrier-phase DNS of iron particle ignition and combustion in turbulent flow (O. Stein)

Combustion wave velocity and structure

Laminar combustion wave velocity and structure investigation in Bunsen type iron dust burners (D. Trimis)

Flame propagation under turbulence

Influence of turbulence on flame propagation in iron dust suspensions (N. Zarzalis)

Projects overview