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Capturing Clean Cellulose

Capturing Clean Cellulose. Lyle Stephens John Deere Technology Innovation Center. State of the Art Harvesting systems Performance Issues. A Brief History. Deere developed the “Biomass Converter” in the 1970s. Used the energy in corn cobs to dry the grain

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Capturing Clean Cellulose

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  1. Capturing Clean Cellulose Lyle Stephens John Deere Technology Innovation Center

  2. State of the Art • Harvesting systems • Performance • Issues

  3. A Brief History • Deere developed the “Biomass Converter” in the 1970s. • Used the energy in corn cobs to dry the grain • Produced syngas for heat and engine fuel.

  4. Status Report • The industry has developed a large number of harvesting technologies.

  5. One Pass

  6. Two Pass

  7. Willow

  8. Miscanthus

  9. Forest Slash

  10. Sponsored Harvest Research • DOE – Iowa State University • Cargill-Dow (now NatureWorks) • John Deere Harvester Works • John Deere Ottumwa Works • John Deere Technology Center – Moline • University of Wisconsin – Madison • University of Kentucky

  11. Generate and Evaluate Concepts • One Pass – One Stream • One Pass – Two Streams • One Pass – Three Streams

  12. One Pass – One Stream • Increase bulk density of loaded truck • Unthreshed ears mixed with chopped stalks – central processor for separation

  13. One Pass – Two Streams • Ears only into combine • Whole plant into combine

  14. Ears Only

  15. Whole Plant

  16. One Pass – Three Streams

  17. Sugar

  18. Cotton

  19. Technology Portfolio • Multitude of unit operations in current and past machines • Can be combined into new machines to meet market requirements

  20. Harvest System Performance

  21. Research Issues: • Soil health and soil erosion • Nutrient value in biomass • Harvest labor availability • Highly seasonal supply • “Hassle Factor” • Feedstock specifications • New Harvesting Concepts

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