Berruti, Franco

Briens, Cedric

Colomba, Anastasia

English

Engineering Conferences International

Engineering Conferences InternationalECI Digital ArchivesBioEnergy IV: Innovations in Biomass Conversionfor Heat, Power, Fuels and Chemicals ProceedingsSpring 6-10-2013Production of bio-coal from biomass in aMechanically Fluidized Reactor (MFR)Anastasia ColombaICFARFranco BerrutiICFARCedric BriensICFARFollow this and additional works at: http://dc.engconfintl.org/bioenergy_ivPart of the Chemical Engineering CommonsThis Conference Proceeding is brought to you for free and open access by the Proceedings at ECI Digital Archives. It has been accepted for inclusion inBioEnergy IV: Innovations in Biomass Conversion for Heat, Power, Fuels and Chemicals by an authorized administrator of ECI Digital Archives. Formore information, please contact franco@bepress.com.Recommended CitationAnastasia Colomba, Franco Berruti, and Cedric Briens, "Production of bio-coal from biomass in a Mechanically Fluidized Reactor(MFR)" in "BioEnergy IV: Innovations in Biomass Conversion for Heat, Power, Fuels and Chemicals", Manuel Garcia-Perez,Washington State University, USA Dietrich Meier, Thünen Institute of Wood Research, Germany Raffaella Ocone, Heriot-WattUniversity, United Kingdom Paul de Wild, Biomass & Energy Efficiency, ECN, The Netherlands Eds, ECI Symposium Series, (2013).http://dc.engconfintl.org/bioenergy_iv/14Production of bio-coal from biomass in a Mechanically Fluidized Reactor (MFR)Anastasia Colomba, Franco Berruti and Cedric BriensInstitute for Chemicals and FuelsFrom Alternative Resources (ICFAR)Western University, London, Ontario CANADA 1Explore the extent to which biomass can beupgraded to bio-coal: Biologically stable Hydrophobic behavior Higher calorific value Friable for use in pulverized coal boilers23 Create a database of biomass and productscharacteristics Comparison of different torrefaction technologies Identify potential feedstocks for fuel production4Energy crops Crop residuesEnergy crops seedsMilling residuesWillow Wheat  StrawSorghum Olive ResidueMiscanthus Corn Stover Sunflower HusksBagasseSwitchgrass Canola Straw5Energy crops Crop residuesEnergy crops seedsMilling residuesWillow Wheat  StrawSorghum Olive ResidueMiscanthus Corn Stover Sunflower HusksBagasseSwitchgrass Canola StrawFeedstocks used in this workReactor LegsMechanically FluidizedReactor Gas/Vapors OutletReactor OutletPipeRotatingBladesTorrefaction experiments:• 260 ˚C and 300 ˚C • 15 minutes residence time 82D Graph 32Sunflower Sorghum Olive Residue Canola WillowYield, weight %80828486889092MFR TGA 2D Graph 32Sunflower Sorghum Olive Residue Canola WillowYield, weight %80828486889092MFR TGA 92D Graph 31Sunflower Sorghum Olive residue Canola WillowYield, weight %4045505560657075MFR TGA RTDU MFR TGA Rotary Drum10Sunflower Sorghum Olive Residue Canola WillowEnergy recovery, %707580859095100Torrefaction 260 °CTorrefaction 300 °CSunflower Sorghum Olive Residue Canola WillowEnergy recovery, %707580859095100Torrefaction 260 °CTorrefaction 300 °C11Sorghum seeds “pop” at higher temperatures        problems with the stirrerRaw sorghum seedsTorrefiedat 260°CTorrefiedat 300°C122D Graph 1Days0 5 10 15 20 25Moisture content, weight %0510152025Raw willow Torrefaction 260 °CTorrefaction 300 °C2D Graph 1Days0 5 10 15 20 25Moisture content, weight %0510152025Raw willow Torrefaction 260 °CTorrefaction 300 °C47% reduction13Evaluated after 21 days in a saturated atmosphere at 15˚C2D Graph 2willow olive sunflower canola% Reduction in moisture content after 21 days0102030405060Torrefaction 260 °CTorrefaction 300 °C2D Graph 2willow olive sunflower canola% Reduction in moisture content after 21 days0102030405060Torrefaction 260 °CTorrefaction 300 °C14Bacteriological activity after 21 days in a saturatedatmosphere:• raw sunflower husks• raw sorghum seedsPrevented with torrefaction !15Reduction up to 90% in the power consumption for grinding after torrefactionRaw biomassTorrefaction 260°CTorrefaction 300°CRaw b massTorrefaction 260°CTorrefaction 300°CRaw b massTorrefaction 260°CTorrefaction 300°CRaw b massTorrefaction 260°CTorrefaction 300°C2D Graph 34X Datacanola willowPower consumption (% of biomass consumption)020406080100Col 2 Col 3 Col 4 Raw biomassTorrefaction 260°CTorrefaction 300°C16Destruction of sunflower husks at higher temperatureno need for further grinding?17 Suitability of the MFR for torrefaction Torrefaction for 15 minutes at 300 oC Upgrades biomass in terms of hygroscopicity, biological stability and grindability Removes the hemicellulose (confirmed by re-hydrolyzing the sample and FT-IR spectra)18 Bio-coal: Comparison with bio-coal produced incontinuous MFR Production of large quantities of bio-coal forcombustion testing Predictive correlations in terms of productperformance Production and testing of bio-char for: Soil amendment Activated carbon19ICFAR technical staff            CEATI International Inc.

Production of bio-coal from biomass in a Mechanically Fluidized Reactor (MFR)

https://dc.engconfintl.org/cgi/viewcontent.cgi?article=1012&amp;context=bioenergy_iv

Production of bio-coal from biomass in a Mechanically Fluidized Reactor (MFR)

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