BioSyn Biomass Gasification Process for the Production of a Tar-Free Synthesis Gas

L. Burhenne, L. Rochlitz, C. Lintner & T. Aicher
A novel fixed¬bed biomass gasification process ("BioSyn gasifier") for the production of tar¬free synthesis gas was developed and demonstrated at Fraunhofer ISE. The process consists of four zones, namely gasification, partial combustion, cracking and a reduction/oxidation (redox) zone. The zones are separated by moving grates to control the residence time of the biomass in every step. Thermal cracking of all higher hydrocarbons and tars is achieved by temperatures in the cracking zone up to 1000...