Catalytic pyrolysis of wood biomass in an auger reactor using calcium-based catalysts.
Wood catalytic pyrolysis using calcium-based materials was studied in an auger reactor at 450°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.
Instituto de Carboquímica (ICB-CSIC), M. Luesma Castán 4, 50018 Zaragoza, Spain.
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A
Veses
Instituto de Carboquímica (ICB-CSIC), M. Luesma Castán 4, 50018 Zaragoza, Spain.
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M
Aznar
Instituto de Carboquímica (ICB-CSIC), M. Luesma Castán 4, 50018 Zaragoza, Spain.
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I
Martínez
Instituto de Carboquímica (ICB-CSIC), M. Luesma Castán 4, 50018 Zaragoza, Spain; Grupo de Investigaciones Ambientales, Universidad Pontificia Bolivariana, Circular 1 N(o)70-01, Bloque 11, Piso 2, Medellín, Colombia.
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JD
Martínez
Instituto de Carboquímica (ICB-CSIC), M. Luesma Castán 4, 50018 Zaragoza, Spain.
J M
JM
López
Instituto de Carboquímica (ICB-CSIC), M. Luesma Castán 4, 50018 Zaragoza, Spain.
M V
MV
Navarro
Instituto de Carboquímica (ICB-CSIC), M. Luesma Castán 4, 50018 Zaragoza, Spain.
M S
MS
Callén
Instituto de Carboquímica (ICB-CSIC), M. Luesma Castán 4, 50018 Zaragoza, Spain.
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R
Murillo
Instituto de Carboquímica (ICB-CSIC), M. Luesma Castán 4, 50018 Zaragoza, Spain. Electronic address: tomas@icb.csic.es.
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T
García
D018533:Biomass; D019149:Bioreactors; D001709:Biotechnology / Q000295:instrumentation* / Q000379:methods*; D002118:Calcium / Q000494:pharmacology*; D002384:Catalysis / Q000187:drug effects; D002606:Charcoal / Q000737:chemistry; D005740:Gases / Q000032:analysis; D006358:Hot Temperature; D010636:Phenols / Q000032:analysis; D014934:Wood / Q000187:drug effects*
D005740:Gases; D010636:Phenols; C540010:biochar; D002606:Charcoal; D002118:Calcium
Auger reactor; Bio-oil; Biomass; Catalytic pyrolysis; Deoxygenation catalysts