Chemical-Looping Combustion Using Syngas as Fuel

Chemical looping combustion (CLC) using syngas as fuel, was presented. Approximately, 300 different oxygen carriers based on oxides of the metals Ni, Fe, Mn and Cu were investigated with respect to parameters, which were important in a CLC system, from the investigations, several particles were found to posses suitable qualities as oxygen carriers. Several cold-model prototypes of CLC based on interconnected fluidized bed reactors were tested, and from these tests a hot prototype CLC reactor system was constructed and operated successfully using three carriers based on Ni, Fe and Mn developed within the project. The particles were used for 30-70 h with combustion, but were circulated under hot conditions for 60-150 h.