Journal
BIORESOURCE TECHNOLOGY
Volume 162, Issue -, Pages 250-258Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2014.03.146
Keywords
Biomass; Catalytic pyrolysis; Auger reactor; Bio-oil; Deoxygenation catalysts
Funding
- Spanish MINECO
- European Union FEDER [CTQ2012-37984-C02-01]
- Aragon Regional Government (DGA)
- Caixa Bank [GA-LC-015/2011]
- European Social Found
- CSIC
- FPU programme of the Spanish Ministry of Education [AP2009-3575]
- Spanish MICINN
- CSIC [RYC-2009-04483]
- Departamento Administrativo de Ciencia, Tecnologia e Innovacion, (Colciencias)
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Wood catalytic pyrolysis using calcium-based materials was studied in an auger reactor at 450 degrees C. Two different catalysts, CaO and CaO.MgO were evaluated and upgraded bio-oils were obtained in both cases. Whilst acidity and oxygen content remarkable decrease, both pH and calorific value increase with respect to the non-catalytic test. Upgrading process was linked to the fact that calcium-based materials could not only fix the CO2-like compounds but also promoted the dehydration reactions. In addition, process simulation demonstrated that the addition of these catalysts, especially CaO, could favour the energetic integration since a lowest circulation of heat carrier between combustor and auger reactor should be needed. An energy self-sustained system was obtained where thermal energy required for biomass drying and for pyrolysis reaction was supplied by non-condensable gas and char combustion, respectively. (C) 2014 Elsevier Ltd. All rights reserved.
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