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Pyrolytic Bio-fuels Produced from Forestry and Agricultural Feedstocks

Pyrolytic Bio-fuels Produced from Forestry and Agricultural Feedstocks. By Philip H. Steele Forest Products Department Forest and Wildlife Research Center Mississippi State University. Bio-oil production:. Bio-oil results from fast pyrolysis of cellulosic biomass

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Pyrolytic Bio-fuels Produced from Forestry and Agricultural Feedstocks

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  1. Pyrolytic Bio-fuels Produced from Forestryand Agricultural Feedstocks By Philip H. Steele Forest Products Department Forest and Wildlife Research Center Mississippi State University

  2. Bio-oil production: • Bio-oil results from fast pyrolysis of cellulosic biomass • Particles are less than or equal to 2 mm • Absence of oxygen • Applied temperatures 400 to 550oC • Rapid cooling

  3. MSU pyrolysis Gen II pyrolysis reactor: Raw bio-oil yield = 65% on dry wt basis. 1 dry ton biomass = 1300 lb bio-oil and gives 130 gal/dt

  4. What are bio-oils? Bio-oils are water emulsive suspensions of the thermally fractured biomass chemical structure. Each bio-oil typically contains more than 100 chemical compounds. Not an oil as it is immiscible in petroleum oils

  5. An MSU objective is to license its pyrolysis reactor design: Revised auger design will allow an estimated 4-ton/day biomass throughput Our two industrial partners are underway with the new design for 10-ton/day reactors

  6. Bio-oil challenges: 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 (50% that of No. 2 fuel oil)

  7. Bio-oil chemical composition by group: 7

  8. Upgrading bio-oil : • Hydrodeoxygenation (HDO) • Lignocellulosic biodiesel (L-B)

  9. Upgrading bio-oil by hydrodeoxygenation (HDO): Hydrogen Oxygen Hydro-carbons Water Water + HDO bio-oil HDO bio-oil captures 72% of raw bio-oil energy value; it is a mix of hydrocarbons ranging from napthalene through diesel weights.

  10. Packed bed reactor production of MSU HDO will begin next week: Water % = 0 Oxygen % = 0 Acid value = 0.1 HHV = 44.8 Diesel 30% Gasoline 35% Jet fuel 32% Other 3%

  11. FTIR spectrum; diesel vs raw and HDO bio-oils:

  12. HDO bio-oil can be: blended with hydrocarbons; refined in current petroleum refineries: Blended with petroleum hydrocarbons Refined in petroleum refineries 5% HDO

  13. SERC co-director, Glenn Steele, demostrating HDO bio-oil/gasoline blend informal engine test:

  14. Esterified bio-oil is a mildly upgraded bio-oil to be utilized as a boiler fuel:

  15. Distributed bio-oil manufacture will reduce transportation costs: Disaster mobile pyrolysis reactors Regional pyrolysis center Mobile pyrolysis reactors Bio-oil upgrading Industrially captive pyrolysis reactors

  16. Hydrocarbon Biofuels Produced via Pyrolysis of Pine Timber and Harvest Residues By Philip H. Steele Sanjeev Gajjela and Fei Yu Forest Products Department Forest and Wildlife Research Center Mississippi State University

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