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CFB Technology for Biomass Utilization in Heat and Power Generation

CFB Technology for Biomass Utilization in Heat and Power Generation. 5 Jun 2013, Belgrade, Biomass for District Heating Systems in Serbia Vesna Barišić. Presentation outline. Biomass as Energy Source Advantages of CFB Technology Challenges in Biomass Combustion

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CFB Technology for Biomass Utilization in Heat and Power Generation

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  1. CFB Technology for Biomass Utilization in Heat and Power Generation 5 Jun 2013, Belgrade, Biomass for District Heating Systems in SerbiaVesna Barišić

  2. Presentation outline • Biomass as Energy Source • Advantages of CFB Technology • Challenges in Biomass Combustion • Advanced Biomass CFB (ABC) Technology • Selected Foster Wheeler References

  3. Biomass as Energy Source

  4. Growth in Biomass Utilization in Energy Production • Incentives against CO2 emissions promote renewable fuels => biomass • Public institutions subsidize and support biomass projects • Regulatory organisms do not release permits to fire fossil fuels investors look into biomass • Traditional biomass (wood-based) is costly and unavailable • Agriculture residues are locally/globally available, and more economic • CFB is IDEAL TECHNOLOGY for large scale power generation for broad range of biomass alone, or co-firing in larger fossil fired power plants!

  5. Advantages of CFB Technology • Fuel flexibility and multi-fuel firing • Simultaneous and/or alternate use of broad range of fuel qualities • Excellent emission performance • DeSOx /DeNOx plants typically not required • High availability & competitive price • Longer boiler life and improved reliability due to low even combustion temperature

  6. CFB Technology Offers Wide Fuel Flexibility • Waste Derived Fuels • Recycled Wood/Paper/ • Plastics • Solid Recovered Fuel • Tire Derived Fuel • Sludge • Pulp and Paper Mill • Municipal • Gas • Oil • Petroleum Coke • Woody Biomass • Bark • Wood Chips • Sawdust • Forest Residues • Willow/Salix • Agricultural Residues • Olive Waste • Straw • Bagasse • Rice Husk • Sunflower • Dried Fruits • etc. • Coal • Anthracite • Bituminous • Subbituminous • Lignite • Waste Coal • Anthracite Culm • Bituminous Gob • Coal Slurry • Oil Shale • Peat CFB Technology Opens the Door to Fuel Flexibilityand Carbon Neutral Fuels

  7. Challenges in Biomass Combustion

  8. Compared to Fossil Fuels Biomass Ash Chemistry is More Complex

  9. Challenges Associated with Biomass Combustion are Well Understood- Foster Wheeler Fuel Model -

  10. Technical Solutions for Biomass Combustion Advanced Biomass CFB (ABC) Technology Control of Fouling & Corrosion Integrated Steam Cooled Solid Separator and Return Leg Empty pass before conv. HX - Flue gas temperature • - Wider spacings in width • - Flue gas velocities • Fully recractable sootblowers • Austenitic convection SH&RH Control of Agglomeration & Fouling Conservative flue gas velocity During Operation:- Fuel quality management - FW SmartBoiler datalog & Diagnostic tools Recirculation gas utilization for temperature control • Active Bed Material • Normal sand + PC ash Additives Final SH & RH as INTREX Step Grid

  11. Selected References

  12. Foster Wheeler CFB Reference – 414 units – Polaniec Kaukas Samcheok Jyväskylä Igelsta FortumCzęstochowa

  13. Multifuel CFB for Clean Biomass and Waste (CHP)Igelsta, Söderenergi AB, Södertälje, Sweden 240 MWth, 73 MWe-net, 209 MWDH, 92 kg/s, 90 bar, 540°C Total plant efficiency ~110%LHV 90%HHV Commercial operation: 2009 *only at 100% load with Mix 1, 2, and 3

  14. Large Scale CFB for Clean Biomass (CHP)Kaukas, KaukaanVoimaOy, Finland 385 MWth, 125 MWe-net, 110 MWDH, 149 kg/s, 115 bar(a), 550 °C Commercial operation: 2010

  15. Large Scale CFB for Biomass with 20 wt-% AgroPolaniec, GFD Suez EnergiaPolska S.A, Poland World’s Largest Solid Biomass Fired Power Plant 447 MWth,205 MWe, 127/20 bar(a), 535/535°C Commercial operation: 2012

  16. Co-firing Biomass and Coal

  17. Benefits of large scale biomass co-firing in CFB • Smaller investment cost per MWe than in smaller units • Higher plant efficiency than in smaller units • Not dependent on biomass availability • Technical challenges (AFC) reduced in co-firing

  18. Medium Size CFB for CofiringBiomass/Coal (CHP)Fortum, Częstochowa, Poland 182 MWth, 66MWe, 77.2 kg/s, 111 bar(a), 515°C Commercial operation: 2010

  19. Large Scale CFB for Cofiring Peat/Coal and Virgin Biomass (CHP)Jyväskylä, JyväskylänEnergiaOy, Finland 455 MWth, 200 MWe, 160/143 kg/s, 164/40.5 bar(a), 560/560°C Commercial operation: 2010

  20. Coal & Biomass Co-Fired Supercritical CFB ProjectSamcheok 4 x 550 MWe • 437/356 kg/s, 25.6/5.4 MPa, 603/603 °C • Efficiency 42.4% (net) • Fuel flexibility: • Lignite/Subbituminous coal • Wood Pellets max 5% • KOSPO, Korean Southern Power Co. Ltd • Foster Wheeler scope: Basic design of boiler plant and delivery of hot loop pressure parts etc. • Contract Signed (NTP): June 2011 • Commercial operation: 2015 4 x 550 MWe supercritical OTU – CFB to feed 2 x 1100 MWe turbines

  21. Summary • Biomass has an important role in reducing the environmental effects of energy production both in pure biomass plants and in coal and biomass co-combustion • CFB technology is an ideal Technology to be used for large scale power generation with broad range of solid biomass fuels • CFB Technology with pure biomass firing available up to 600 MWe scale and with coal co-firing up to 800 MWe scale

  22. www.fwc.com

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