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Energies 2013, 6(7), 3167-3181; doi:10.3390/en6073167
Article

Hydrogen-Rich Gas Production by Sorption Enhanced Steam Reforming of Woodgas Containing TAR over a Commercial Ni Catalyst and Calcined Dolomite as CO2 Sorbent

1
,
2,* , 3
,
2
 and
1,2
1 CIRPS—Interuniversity Research Centre on Sustainable Development, Piazza San Pietro in Vincoli 10, Rome 00184, Italy 2 Department of Mechanical and Aerospace Engineering, Sapienza University of Rome, Via Eudossiana 18, Rome 00184, Italy 3 Energy and Mechanic Department, Marconi University of Rome, Via Virgilio. 8, Rome 00193, Italy
* Author to whom correspondence should be addressed.
Received: 15 May 2013 / Revised: 24 June 2013 / Accepted: 26 June 2013 / Published: 1 July 2013
(This article belongs to the Special Issue Biomass and Biofuels 2013)
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Abstract

The aim of this work was the evaluation of the catalytic steam reforming of a gaseous fuel obtained by steam biomass gasification to convert topping atmosphere residue (TAR) and CH4 and to produce pure H2 by means of a CO2 sorbent. This experimental work deals with the demonstration of the practical feasibility of such concepts, using a real woodgas obtained from fluidized bed steam gasification of hazelnut shells. This study evaluates the use of a commercial Ni catalyst and calcined dolomite (CaO/MgO). The bed material simultaneously acts as reforming catalyst and CO2 sorbent. The experimental investigations have been carried out in a fixed bed micro-reactor rig using a slipstream from the gasifier to evaluate gas cleaning and upgrading options. The reforming/sorption tests were carried out at 650 °C while regeneration of the sorbent was carried out at 850 °C in a nitrogen environment. Both combinations of catalyst and sorbent are very effective in TAR and CH4 removal, with conversions near 100%, while the simultaneous CO2 sorption effectively enhances the water gas shift reaction producing a gas with a hydrogen volume fraction of over 90%. Multicycle tests of reforming/CO2 capture and regeneration were performed to verify the stability of the catalysts and sorbents to remove TAR and capture CO2 during the duty cycle.
Keywords: biomass gasification; TAR steam reforming; CO2 capture; fluidized bed biomass gasification; TAR steam reforming; CO2 capture; fluidized bed
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).
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Sisinni, M.; Di Carlo, A.; Bocci, E.; Micangeli, A.; Naso, V. Hydrogen-Rich Gas Production by Sorption Enhanced Steam Reforming of Woodgas Containing TAR over a Commercial Ni Catalyst and Calcined Dolomite as CO2 Sorbent. Energies 2013, 6, 3167-3181.

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