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Eai presentation green power conference hyderabad jan 2010

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  • ==Range of biomass feedstock -> Agri residues -> dedicated energy crops -> forest residues -> urban wood wastes -> wood mill waste
  • Plasma gasification - - breaking down matterat the atomic level by exposing it to very high temperature plasma arcs
  • Raw biomass has relatively low-energy density, too much moisture, is too hygroscopic, can rot during storage and difficult to grind into small particles. Numerous pre-treatment methods have been suggested, key being torrefactionTorrefaction results in:Increased energy densityDecreased volumeof biomassDecreased amount of volatilesIncreased amount of fixed carbon
  • Transcript

    • 1. Biomass Power Generation : Recent Trends in Technology
      and Future Possibilities
      NarasimhanSanthanam
      Energy Alternatives India, www.eai.in
    • 2. About EAI
      • Leading Indian renewable energy business intelligence, market strategy consulting firm
      • 3. Work on all primary renewable energy sectors – solar, wind, bio-fuels / biomass, waste-to-energy and small hydro
      • 4. Work on market research, entry and diversification strategy, economic and financial modeling and pre-feasibility analysis
      • 5. Team comprises professionals from IITs and IIMs, with renewable energy, industry research and economics backgrounds
      • 6. Based out of Chennai, India
      • 7. More at www.eai.in
    • What Am I Here For?
      • Imperatives for Power Generation Industry
      • 8. Prospective Solutions
      • 9. Role of Biomass in these Solutions
      • 10. Processes and Technologies in Biomass-based Power Generation
      • 11. Current Trends
      • 12. Future Prospects
    • Tech -> Solutions -> Imperatives
    • 13. Imperatives
      Environmentally sustainable electricity production
      Electricity for rural and remote areas
      Socially beneficial electricity production
      More reliable electricity production from renewable sources
    • 14. Prospective Solutions
      Distributed electricity generation
      Electricity generation with less GHG emissions
      Combining synergistic revenue streams for economically sustainable power production
      Combining different renewable energy sources for power generation to ensure stability and reliability
    • 15. Role of Biomass in the Solutions
      Wide range of biomass feedstock
      Waste biomass and energy crops available in a distributed manner
      Biomass as a feedstock instead of fossil fuels at power plants
      Possibility of useful products such as biofertilizers and biofuels along with electricity
      Flexibility to integrate biomass with other renewable sources such as solar and wind.
    • 16. Biomass-based Power Gen Processes and Technologies
      Gasification and pyrolysis
      Use of biomass as partial feedstock in power plants for co-firing
      Anaerobic digestion
    • 17. Tech, Processes & Solutions
      Combining different renewable energy sources for power generation to ensure stability and reliability
      Gasification and pyrolysis
      Combining synergistic revenue streams for economically sustainable power production
      Anaerobic digestion
      Distributed electricity generation
      Use of biomass as partial feedstock in power plants for co-firing
      Electricity generation with less GHG emissions
    • 18. Gasification and Pyrolysis
      Scalable
      Biomass agnostic
      Distributed electricity generation
      Production of valuable co-products such as biochar
      An established technology with potential for innovations
    • 19. Gasification/Pyrolysis – Current Trends
      Current
      Types of gasifiers - Updraft; downdraft; Fluidized bed; Entrained flow. Also: One stage and two stage gasifiers
      High temperature treatment for easy removal of ash contaning heavy metals.
      Electric power generated in engines and gas turbines, which are cheaper and more efficient than the steam cycle used in incineration
    • 20. Gasification/Pyrolysis –Future Trends
      Future
      • Plasma gasification
      • 21. Use of fuel cells for electricity generation
      • 22. Significant advancements possible for:
      • 23. Flexibility in biomass range
      • 24. Slagging problem for biomass with low melting point
      • 25. Reducing tar contamination in gas flow
    • Use of Biomass for Co-firing in Power Plants
      Less net GHG emissions compared to 100% coal power plants
      Over 200 power plants worldwide using it
      Could be a critical route used by power plants in the short and medium term as an important GHG reduction strategy
    • 26. Biomass Cofiring – Current Trends
      Current
      Max 20% biomass used
      Process and material improvements for increased efficiency and decrease costs
      Many technical bottlenecks in biomass co-firing are ash related; dedicated toolboxes are being developed to tackle these
    • 27. Biomass Cofiring – Future Trends
      Future
      • Increase of cofiring %s to 50% w/w
      • 28. Lower-quality (“salty”) biomass, higher fuel flexibility (per unit or by combining different units)
      • 29. Integration with clean coal tech
      • 30. Boilers with ultra-supercritical steam tech
      • 31. Oxy-fuel combustion
      • 32. IGCC
      • 33. Torrefaction - thermal treatment of raw biomass materials in temperature range 200-300 C under inert atmosphere with aim of partial decomposition. A charcoal-like fuel is the result.
    • Anaerobic Digestion
      Can use waste biomass that present disposal problems
      Can be a distributed avenue for power generation
      Suitable for industrial and domestic waste biomass
    • 34. AD – Current and Future Trends
      Current
      Modifications in reactor designs and processes for higher efficiency of digestion
      Newer and more efficient gas engines
      Future
      Using the AD effluent to grow biofuel feedstock such as algae
    • 35. Other Trends and Innovations
      Use of renewable energy such as solar thermal to produce syngas
      New technologies and processes for biomass harvesting, processing and handling.
      Dedicated energy crops for power production
      Innovations in biomass logistics and transportation.
    • 36. Biomass Power – Now and Future
    • 37. Inference
      Biomass has the potential to be a more significant contributor to the world’s “green” electricity
      For this to happen, significant advances in technology and processes are required
      The pace at which advances are taking place are less than satisfactory; higher governmental and industry support for R&D and incentives required
    • 38. Thank you
      NarasimhanSanthanam
      Energy Alternatives India, www.eai.in
      narsi@clixoo.com
      Mob: 98413-48117