Improvement of Gas Yield from Biomass Gasification by Using Fe-olivine as Gasifier Bed Inventory

In the present work, a bench-scale biomass gasification plant operating at atmospheric pressure is utilized in this work to check innovative, catalytic hot gas cleaning processes and plant arrangements. The cleaning step is realized by means of Fe/olivine, used as catalytic bed inventory for tar, methane and H2S reforming, or Fe/olivine coupled with a catalytically active filter candle. Natural olivine has been used in fluidized bed gasifier thanks to the catalytic activity and the mechanical strength. Iron (III) in his structure is responsible of the tar cracking reaction because of its efficiency in ring opening. Impregnation of iron leads to an improved catalytic efficiency. The aim of this work is to test the Fe/olivine in real gasification condition using a fluidized bed gasifier.