(517d) Characterization of a 200 Kw Fluidized Bed Biomass Gasifier

Utilization of biomass waste streams is critical for efficient and cost-effective operation of pulp and paper mills. Gasification of e.g. black liquor, forest residues and nearby available agricultural residues is a promising alternative for processing such waste streams. Although gasification is a well established process in many different industries (petroleum refining, coal power generation, etc.), its use in the forest products industry is so far relatively limited.

The University of Utah operates a 200 kW fluidized bed gasifier capable of feeding up to 65 lbs/hr of solid biomass. This presentation describes experience with this system including the influence of different gasifier operating conditions on synthesis gas composition and carbon conversion. In addition, qualitative ?lessons learned? relating to operation of the pilot scale biomass gasifier are presented. The information provides a characterization of the pilot scale fluidized gasifier for future research on syngas cleanup, including reduction of tar and sulfur species.