Title: Biomass gasification with pure steam in fluidised bed: 12 variables that affect the effectiveness of the biomass gasifier

Authors: Jose Corella, Jose-Manuel Toledo, Gregorio Molina

Addresses: Department of Chemical Engineering, University Complutense of Madrid, Madrid 28040, Spain. ' Department of Chemical Engineering, University Complutense of Madrid, Madrid 28040, Spain. ' Department of Chemical Engineering, University Complutense of Madrid, Madrid 28040, Spain

Abstract: Biomass gasification in fluidised bed with pure steam has already generated a 60 vol.%, dry basis, H₂ rich gas that was increased to 70–80 vol.% H₂ by using a CO₂ sorbent in the gasifier bed. A tar content as low as 0.25 g/Nm³ has also been reported when an active catalyst is used in the gasifier bed. Biomass gasification in fluidised bed with pure steam, therefore, has some potential interest for the production of a very rich in H₂ clean gas. This work shows in detail 12 operational variables that have already demonstrated a clear influence on the product distribution from the gasifier. Among all the products originating from the gasifier, this study concentrates on the hydrogen and tar contents in the raw gasification gas.

Keywords: gasifier; hydrogen production; renewable energy; biomass gasification; steam gasification; hydrogen; fluidised bed; clean gas; tar content.

DOI: 10.1504/IJOGCT.2008.016739

International Journal of Oil, Gas and Coal Technology, 2008 Vol.1 No.1/2, pp.194 - 207

Published online: 18 Jan 2008 *

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