title: Improved lignin pyrolysis for phenolics production in a bubbling bed reactor--Effect of bed materials.
abstract: Lignin pyrolysis was studied in a bubbling fluidized bed reactor equipped with a fractional condensation train, using nitrogen as the fluidization gas. The effect of different bed materials (silica sand, lignin char, activated lignin char, birch bark char, and foamed glass beads) on bio-oil yield and quality was investigated for a pyrolysis temperature of 550 °C. Results how that a bed of activated lignin char is preferable to the commonly used silica sand: pyrolysis of Kraft lignin with a bed of activated lignin char not only provides a pure char product, but also a higher dry bio-oil yield (with a relative increase of 43%), lower pyrolytic water production, and better bio-oil quality. The bio-oil obtained from Kraft lignin pyrolysis with a bed of activated lignin char has a lower average molecular weight, less tar, more phenolics, and less acidity than when sand is used as bed material.
authors: Institute for Chemicals and Fuels from Alternative Resources (ICFAR), Department of Chemical and Biochemical Engineering, The University of Western Ontario, London, Ontario N6A 5B9, Canada. Electronic address: cedric.franco.dongbing@gmail.com.
authors: Dongbing
authors: D
authors: Li
authors: Institute for Chemicals and Fuels from Alternative Resources (ICFAR), Department of Chemical and Biochemical Engineering, The University of Western Ontario, London, Ontario N6A 5B9, Canada.
authors: Cedric
authors: C
authors: Briens
authors: Institute for Chemicals and Fuels from Alternative Resources (ICFAR), Department of Chemical and Biochemical Engineering, The University of Western Ontario, London, Ontario N6A 5B9, Canada.
authors: Franco
authors: F
authors: Berruti
mesh_terms: D000143:Acids / Q000032:analysis; D056804:Biofuels; D019149:Bioreactors; D002606:Charcoal; D008401:Gas Chromatography-Mass Spectrometry; D006358:Hot Temperature; D008031:Lignin / Q000737:chemistry*; D008970:Molecular Weight; D010636:Phenols / Q000032:analysis*
chemical_list: D000143:Acids; D056804:Biofuels; D010636:Phenols; C540010:biochar; D002606:Charcoal; C076151:Kraft lignin; D008031:Lignin
keywords: Activated char; Bed material; Biomass pyrolysis; Fractional condensation; Kraft lignin