Paper details

Title:

Catalysts in the Fluidized Bed and in the Freeboard of a Biomass Gasifier

Author(s):

Rapagnà, S., Gallucci, K., Di Marcello, M., Foscolo, P.U.

Document(s):

Abstract:

Continuous catalytic steam gasification runs have been performed using a bubbling fluidized bed gasi.er with an internal diameter of 0.10 m, in a temperature range of 800 – 830°C. The biomass feedstock consists of crushed almond shells, with an average particle Sauter diameter of 1054 .m. Gas cleaning and conditioning is performed coupling the effect of a catalytic filter candle in the freeboard, delivered by Pall Schumacher GmbH, with a catalytic bed inventory made of Fe­olivine. Fe­olivine catalyst has been synthesized and characterised by ECPM­LMSPC ­University of Strasbourg. Iron (III), naturally present in its structure, is responsible for the tar cracking reactions because of its efficiency in ring opening. Impregnation with iron leads to improved catalytic efficiency. In presence of both catalysts into the fluidized bed (Fe­olivine particles) and in its freeboard (catalytic candle), the gas yield is 1.75 Nm3/kg daf biomass with a tar content 0.30 g/Nm3.

Keywords:

biomass, catalyst, fluidized bed, hydrogen, integration

Topic:

Thermochemical conversion - Gasification for synthesis gas production

Subtopic:

Syngas production. Reaction and technologies

Event:

18th European Biomass Conference and Exhibition

Session:

OB4.4

Pages:

778 - 781

ISBN-13:

978-88-89407-56-1

ISBN-10:

88-89407-56-5

Paper DOI:

10.5071/18thEUBCE2010-OB4.4

Price:

FREE