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Options for Biomass to Energy Commercial and Emerging Technologies

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Options for Biomass to Energy Commercial and Emerging Technologies

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    1. Options for Biomass to Energy Commercial and Emerging Technologies Biomass to Business Albuquerque NM March 25, 2004 John Scahill National Bioenergy Center

    2. Point 3 areas with 1 example of each Waste sawdust Ag residues corn stover Dedicated crops - switchgrassPoint 3 areas with 1 example of each Waste sawdust Ag residues corn stover Dedicated crops - switchgrass

    4. Biomass Conversion Pathways

    6. Gasification

    7. Gasification

    8. Gasifier Types Updraft Downdraft Fluidized Bed Bubbling Circulating Flow Entrained Flow Staged (pyrolysis / steam reforming)

    9. Updraft Gasifier Simple, reliable Commercial history High tars Close coupled combustion

    10. Downdraft Gasifier Requires low moisture (<20%) Lowest Tar Can use gas in engines (after conditioning)

    11. Fluidized Bed Gasifier Highest throughput Fuel flexible Tolerates moisture Complex operation

    12. Entrained Flow Gasification

    13. Staged Gasification

    15. Biomass Pyrolysis (liquefaction) Rapid Heat Transfer Oxygen Free Environment 60 70 wt% liquids 10-15 wt% char 10-15 wt% gases

    16. Biomass Pyrolysis (liquefaction) Bio-oil Uses Fuel oil substitute Chemicals Hydrogen Turbines (Power)

    17. Biomass Technology Risk

    18. Technology Installed Cost

    19. Biomass Thermal Conversion Developers

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