Effect of Natural Ilmenite on the Solid Biomass Conversion of Inhomogeneous Fuels in Small-Scale Bubbling Fluidized Beds

The application of oxygen carriers as alternative bed material in fluidized combustion originates from chemical lopping processes. They serve transport agents undergoing consecutive redox cycles. Thereby, can provide surplus oxygen-lean areas In turn, re-oxidation takes place oxygen-rich reactor parts. A more homogeneous and reduced CO emissions follow during steady-state operation. However, especially regarding solid biomass conversion, inhomogeneous fuel qualities result transient conditions. Therefore, this research deals with the influence carrier ilmenite on conversion. Separated batch experiments methane (volatile), char wood pellets took a laboratory bubbling reactor. reveal that enhances in-bed CO2 yield by up to 63% combustion. Batch confirm solid–solid reactions are negligible. heterogeneous gas–solid reduce O2 partial pressure limit conversion rate. pellet show buffering effect is mitigated due high local demand around limited distribution bed. Finally, continuous operation 100 kWth BFB input indicates higher confirms lower less fluctuation flue gas supply.