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Steele repreve 1 13-11
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Steele repreve 1 13-11

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Dr. Phil Steele, MSU, gives a talk on pyrolysis research, using Freedom Giant Miscanthus. They turned the feedstock miscanthus x giganteus in to gasoline, diesel and aviation fuel. Originally ...

Dr. Phil Steele, MSU, gives a talk on pyrolysis research, using Freedom Giant Miscanthus. They turned the feedstock miscanthus x giganteus in to gasoline, diesel and aviation fuel. Originally presented at the Freedom Field Day.

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    Steele repreve 1 13-11 Steele repreve 1 13-11 Presentation Transcript

    • The Potential for Production of Fuels from Giant Miscanthus via Pyrolysis Philip Steele Professor and SERC Bio-oil Thrust Leader Sustainable Energy Research Center Mississippi State University
    • Acknowledgements
      • This research is based upon work funded through the Sustainable Energy Research Center at Mississippi State University and is supported by the Department of Energy under Award Number DE-FG3606GO86025 .
    • MSU bio-oil objectives:
      • Develop more effective pyrolysis reactors to produce high-quality bio-oils at optimum yield
      • Upgrade bio-oils to commercial liquid fuels
      • Commercialize technologies by demonstration projects and industrial relationships
      • Oxygen in bio-oil: 45-50% by weight
        • Incorporated in oxygenated compounds
      • Causes most of the negative properties:
        • Variable viscosity
        • High acidity
        • Pungent odor
        • Low energy density
      Bio-oil challenges:
    • Development effective auger pyrolysis reactors:
      • Auger reactors can be built with reduced capital investment
      • Auger reactors are more readily produced at small scale
    • Giant miscanthus pyrolysis products:
      • Giant miscanthus yield is 60% vs 65% for pine wood
      • Hydrocarbons can be produced from giant miscanthus bio-oil
    • The MSU auger reactor design is under MOU to an industrial partner:
        • Prototype 10 ton/day reactor built to MSU design is producing bio-oil at 67% yield
        • All benchmarks have been met and licensing should be completed during September 2010
        • Construction of a 50-ton per day pyrolysis facility planned for 2012
    • Our proprietary HDO catalyst produces a high-quality hydrocarbon mix: Hydrogen Removal of oxygenated compounds Water + HDO bio-oil Water Hydrocarbons Bio-oil
      • Yield is 1.1 bbl of hydrocarbons per dry ton of biomass; this represents 40% (goal = 50%) of the original energy contained in the bio-oil.
    • Properties of HDO bio-oil vs diesel: Property HDO bio-oil Diesel Water content (wt%) 0 0 Acid value (mg KOH/g) <0.1 0 Viscosity (cSt @ 40C) 2.8  2.6  HHV (MJ/kg) 45.2 45.8 Carbon (%) 88.6  85.1  Hydrogen (%) 11.4  12.2  Oxygen (%) 0 0 
    • GC simulated distillation showing fuel components of HDO bio-oil hydrocarbon mixture:
    • Upgrading bio-oil :
      • Lignocellulosic Boiler Fuel (LBF)
    • LBF combustion flame produced with a drop-in injector replacement module:
    • Physical and chemical properties of LBF bio-oil: Property Raw bio-oil LBF Water Content (%) 24.2 7 Acid value ( mg KOH/g) 89 46 Viscosity (cSt @ 40 o C) 14.53 5.6 HHV (MJ/kg) 17.5 31.9
    • Upgraded bio-oil : Anhydrosugars to ethanol or hydrogen
    • Anhydrosugar production via fast pyrolysis:
      • Biomass pretreatments allow anhydrosugars to be generated in significant quantities in the aqueous fraction (MSU = 51% vs previous high of 36%; 30% increase)
      • Anhydrosugars can be catalytically reformed to produce hydrogen
      Levoglucosan
      • Alternatively, the sugar-rich aqueous fraction can be hydrolyzed and fermented to ethanol.
      Anhydrosugar production via fast pyrolysis, cont’d:
      • Raw
      • bio-oil
      Raw bio-oil and fractionation products: 71% Aqueous phase fraction 29% Pyroligneous fraction
    • High percentage of anhydrosugars in bio-oil aqueous fraction (51%); GC/MS spectra: Anhydrosugars Final patent to be filed in October 2010
    • Raw aqueous fraction before and after filtration of inhibitors; after hydrolysis to glucose:
      • We have produced
      • ethanol without
      • problem with the
      • hydrolyzed glucose
    • Future activities:
      • Catalytic pyrolysis reactor design is completed and will be built by the end of the year
      • A 4-ton per day auger reactor and 100-gal per day hydrotreater and esterified bio-oil production capabilities will be housed in an SERC pilot plant on MSU campus
      • MSU auger reactor licensee will commercialize and scale up production based on their success with a 10-ton per day MSU design
    • Future activities, cont’d:
      • Aqueous fraction sugars will be produced from giant miscanthus bio-oil
    • Philip Steele Professor and SERC Bio-oil Thrust Leader Sustainable Energy Research Center Mississippi State University The Potential for Production of Fuels from Giant Miscanthus via Pyrolysis