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

Mario Sisinni²  Andrea Di Carlo¹  Enrico Bocci³  Andrea Micangeli¹ 

[1] Department of Mechanical and Aerospace Engineering, Sapienza University of Rome, Via Eudossiana 18, Rome 00184, Italy; E-Mails:;CIRPS—Interuniversity Research Centre on Sustainable Development, Piazza San Pietro in Vincoli 10, Rome 00184, Italy; E-Mail:;Energy and Mechanic Department, Marconi University of Rome, Via Virgilio. 8, Rome 00193, Italy; E-Mail:

关键词: biomass gasification;    TAR steam reforming;    CO₂ capture;    fluidized bed;   

DOI  :  10.3390/en6073167

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2013 by the authors; licensee MDPI, Basel, Switzerland.