Fraunhofer Institute for Environmental, Safety and Energy Technology UMSICHTDRI test facility
The DRI test facility is used to test different compositions of reducing gases for the production of sponge iron (Direct Reduction Iron) and to characterize the resulting overhead gases.
Aim
Small-scale production of sponge iron in a near-industrial reactor configuration
- Determination of optimized operating parameters
- Development of treatment strategies for the reuse or further utilization of the overhead gases
Application
- Consideration of the influence of various reducing gas components such as hydrogen, carbon monoxide, carbon dioxide and methane
- Determination of the composition of the overhead gas
- Variation of operating parameters such as dwell time and temperature
Technical specification
- Reactor tube
- Ø 168.5x10 mm
- Length 4,365 mm
- Electrically pickled length 1,835 mm
- Operating temperature up to 950 °C
- Gas supply: H2, CO, CO2 (expandable to include CH4 and biogas)
- Start-up with N2
- Electrical preheating of the reducing gases to up to 950 °C
- Inertization with forming gas (5 % H2 in N2)
- Online gas analysis of overhead gases (water vapor, H2, CO, CO2, CH4)
- Continuous dosing of iron ore pellets (3-9 kg/h)