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Sustainable Energy Ireland

Sustainable Energy Ireland. Exploiting the Resource David Raubenheimer March 2004. Fibrowatt Overview. Developer owner operator Power from agricultural residues 65 MW operational 2,650,000 MWh produced, 3.7 million tonnes fuel Overview of Fibrowatt’s plants. The Carbon Cycle.

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Sustainable Energy Ireland

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  1. Sustainable Energy Ireland Exploiting the Resource David Raubenheimer March 2004

  2. Fibrowatt Overview • Developer owner operator • Power from agricultural residues • 65 MW operational • 2,650,000 MWh produced, 3.7 million tonnes fuel • Overview of Fibrowatt’s plants

  3. The Carbon Cycle CARBON (CO2) Flue Gases ENERGY BEDDING & FEED ELECTRICITY MANURE BIOMASS Ash NUTRIENTS

  4. Power Stations

  5. Fibropower Commissioned Jul 1992 Design output 12.7MW Burns 150,000 t/yr of poultry litter & other biomass

  6. Fibropower - Operational Experience • Development of know-how • Fuel characterisation difficult • Biomass knowledge fragmented • No available standards • Now runs exceptionally well • New fuels trialled

  7. Fibrogen Commissioned Nov 1993 Design output 13.5MW 3-5 yr Govt contract for 85,000 t/yr of meat & bone meal

  8. Fibrogen • Commercially similar to Fibropower • 8% larger • New fuel handling – design trials • Technically very successful • Achieves 90 – 100% availability • Converted to burn MBM

  9. Fibrothetford Commissioned 1998 Design output 38.5MW Burns 460,000 t/yr of poultry litter & other biomass

  10. Fibrothetford • Significant scale up – 3x • New fuel storage – design trial • Environmentally sensitive site • Environmental standards changed • Construction contractors more cautious • Scale up caused technical problems • Now running well

  11. How it Works – in the plant

  12. Technology – Current Plants

  13. Fuel Pits at Fibrogen

  14. Thetford Fuel Hall

  15. Fuel Trucks Unloading

  16. Fibrogen - MBM Conversion

  17. Inside the Boiler

  18. Technology - Results • Poultry litter burns very well • Characterisation is difficult • Handling needs care • Combustion performance • Certain arrangements excluded

  19. Technologies Reviewed • Have reviewed a number • Stepwise development strategy • Fluidised Bed • Gasification • Digestion • High tech may be counterproductive

  20. What a Project Needs • Available, contactable & characterised fuel supply • Affordable electrical connection • €4+ million to develop • 2 - 5 yrs development, 2 yrs construction • Incentivised construction contractors • Available land and local support

  21. What a Project Needs (2) • Power Purchase Agreement • Bankable • Long term (construction +15 years) • Technology specific • Ash fertiliser sales routes • Abundant political support

  22. Summary • 2,650,000 MWh • 3,700,000 tonnes of fuel • Significant teething problems overcome • Structure new market with care • Particularly the Power Sale arrangements • Consistent and broad political support

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