Journal
RSC ADVANCES
Volume 6, Issue 31, Pages 25975-25985Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6ra01657j
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Funding
- Ministry of Economy and Competitiveness of the Spanish Government [CTQ2013-45105 R, CTQ2014-59574-JIN]
- EDRF funds
- Basque Government [IT748-13]
- University of the Basque Country [UFI 11/39]
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The continuous fast pyrolysis (500 degrees C) of pine wood sawdust has been studied in a conical spouted bed reactor (CSBR) followed by in-line steam reforming of the pyrolysis vapours in a fluidised bed reactor on a Ni commercial catalyst. An analysis has been carried out on the effect reforming temperature in the 550-700 degrees C range, space time from 2.5 to 30 g(cat) min g(volatiles)(-1) and steam/biomass ratio between 2 and 5 have on the pyrolysis volatile conversion, H-2 yield and gaseous stream composition. The continuous pyrolysis-reforming process has shown great potential for H-2 production from biomass, with no operational problems and allowing for full conversion of pyrolysis vapours. Thus, a maximum H-2 yield of 117 g per kg of biomass was obtained at 600 degrees C, at the highest space time studied (30 g(cat) min g(volatiles)(-1)) and for a S/B ratio of 4. This yield is higher than those obtained by other alternatives, such as direct steam gasification or bio-oil reforming. Moreover, the char produced in the pyrolysis step has been continuously removed from the conical spouted bed reactor in order to be upgraded following promising valorisation alternatives.
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