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PRETREATMENT OF BAGASSE TO IMPROVE FUEL QUALITY VIA TORREFACTION

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PRETREATMENT OF BAGASSE TO IMPROVE FUEL QUALITY VIA TORREFACTION

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  1. PRETREATMENT OF BAGASSE TO IMPROVE FUEL QUALITY VIA TORREFACTION Noorfidza Yub Harun Muhammad T Afzal Faculty of Forestry and Environmental Management University of New Brunswick, Fredericton, NB CSBE Annual Conference, Brudenell River Resort, Prince Edward Island, July 12-15, 2009

  2. 1 2 3 4 5 Project Background Objectives Methodology Results and Discussion Conclusion Contents

  3. PROJECT BACKGROUND “….. biomass has a great potential today and in the future, since it is renewable, in contrast to the nature of the fossil fuels”- E. NATARAJAN- GLOBAL WARMING INCREASE IN ENERGY DEMAND CURRENT ISSUES INCREASE IN CRUDE OIL PRICE DEPLETION OF FOSSIL RESOURCES

  4. 1 2 3 PYROLYSIS GASIFICATION CARBONIZATION BIOFUEL What ? Biofuel is defined as solid, liquid, or gas fuel derived from biomass,theoretically produced from any (biological) carbon source How? • Heating in absence of Oxygen • Types: mild and fast • Convert biomass into CO and Hydrogen • For energy-rich gaseous product • Value added technology • Upgrade fuels

  5. PYROLYSIS • MILD (TORREFACTION) • slow heating process • maximum temperature of 300 °C • solid as main product Pyrolysis retain 70% of initial weight yield solid uniform product ADVANTAGES lower moisture, but higher energy content remove smoke producing compounds • FAST • rapid heating process • temperature range of 450-600 °C • liquid and gas as main product

  6. SUGARCANE PLANTATION IN MALAYSIA 1.2 million tons of Sugarcane produced annually Plantation area: 34,500A Abundant bagasse Biodegradable with calorific value

  7. COMPARISON OF BIOMASS Calorific Value Composition

  8. OBJECTIVE To study the improvement of fuel quality in energy content through torrefaction process

  9. METHODOLOGY Preparation of Bagasse sample Heating at 110oC (24 hours) Grinding

  10. Control Factor Sample Bagasse Particle size 425 micron 1.18 mm Heating rate 35 ºC/min 50 ºC/min Reaction time 25 minutes 18 minutes METHODOLOGY Controlled Parameters Setting

  11. METHODOLOGY Experimental Run for Torrefaction

  12. METHODOLOGY (i) Moisture Content Analysis (ii) Calorific Value Analysis (iii) Composition Analysis (iv) TGA Analysis

  13. RESUTLS & DISCUSSION Pre-treatment of Bagasse Gradual decrease 1. Gradual decrease, then remain constant after two hours 2. Weight loss is due to moisture content loss 3. Water removed by convection and diffusion 4. Remove bound and free water Remain constant

  14. Sample Bagasse Moisture (%) db 2.77 Volatile Matters (%) db 48.13 Ash (%) db 4.6 Carbon, C (%) db 44.5 Hydrogen, H (%) db 5.32 Nitrogen, N (%) db 0.83 Sulfur, S (%) db 0.25 Heating Value, (kJ/kg) db 11756 RESUTLS & DISCUSSION Proximate and Elemental Analysis for Bagasse 2

  15. RESUTLS & DISCUSSION Heating Values (kJ/kg) Obtained for Each Operating Conditions

  16. RESUTLS & DISCUSSION Calorific Value of Raw Bagasse and Torrified Bagasse at 200oC with Different Particle Sizes

  17. RESUTLS & DISCUSSION Calorific Values of Torrified Bagasse at Different Temperature, Particle Size and Reaction Time

  18. RESUTLS & DISCUSSION Heating rate effects on calorific values of torrified bagasse

  19. RESUTLS & DISCUSSION Effect of Temperature on TGA Analysis Weight loss effects at temperature range from 200-280oC 80% weight content remains

  20. CONCLUSIONS • The heating values were increased with temperature and heating rate. • The heating values were decreased with increasing particle size. • Weight of most torrefied bagasse remained at 80%. • Exhibit higher moisture loss while retaining higher energy and initial weight. • Bagasse has a great potential to be used as biofuel after torrefaction.

  21. Thank You ! Questions and Answers