Torrefaction: A New Process for Louisiana Biomass, Opportunities ...
Torrefaction: A New Process for Louisiana Biomass, Opportunities ...
Torrefaction: A New Process for Louisiana Biomass, Opportunities ...
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Prashanth R. Buchireddy, Dr.John L. Guillory,Dr.Mark E. Zappi, Ben Russo, and Keith Crump7 th November 2012Vertech 2012 Conference
• Generate Clean EnergyLA & FL Pilot Phase
• Heterogeneous (Size & Shape)• Fibrous (Grindability)• Hydrophilic• Low Energy Density• Biodegradable• High Alkali Metals
250-300 o C15-90 mins.InertAtmosphere+WaterVolatiles,GasesUntreated<strong>Biomass</strong>FibrousHydrophilicHeterogeneous6,000-9,000 Btu/lbHemicelluloseDecompositionTorrefied<strong>Biomass</strong>Less FibrousHydrophobicHomogenous9,000-12,000 Btu/lb
*Bergman et.al., 2005
HHV,Btu/lb1009590Solid YieldEnergy YieldHHV10500100008580950075709000656085005550Pine Willow Arundo Pecan Bamboo8000
<strong>Torrefaction</strong>Temperature, C % Carbon % Hydrogen % Oxygen HHV, Btu/lb0 47 6.2 46 7330250 52 5.6 41 8972260 54 5.4 39 9367270 56 5.3 38 9655280 58 5.1 36 9976290 61 4.9 33 10339
HGI140120<strong>Torrefaction</strong> Temperature- 250 C<strong>Torrefaction</strong> Temperature- 270 C<strong>Torrefaction</strong> Temperature- 290 C1008060HGI Coal - 4640200Pine Willow Arundo Bamboo
<strong>Biomass</strong>Natural GasCombustionModuleCombustion HeatVolatiles and Gasesa/r <strong>Biomass</strong>Pre Dryer<strong>Torrefaction</strong>ReactorProductCooling&Pellatization<strong>Process</strong> Heat RecoveryHeat RecoveryTorrefied <strong>Biomass</strong>
• <strong>Biomass</strong> Type: Pine• Torrefied <strong>Biomass</strong> Produced TillDate: 1-2 Tons• Production Rate: 10-20 lb/hr(Depending on the M.C.)• Reactor Temp.: 280-310 O C• Residence Time: 1 hour• Solid Yield: 65-75%• Energy Yield: 75-85%• Energy from volatiles not utilizedduring the production
Torrefied PinePine
3-510,10015>450.12* Electric Power Research Institute
Ton BasisFuel Price Basis<strong>Process</strong>ingCost, $ProductionCost, $Natural Gas@$4.00/MMBTUNatural Gas@$5.23/MMBTU (Current)16.63 75.4521.14 79.96Natural Gas@$6.00/MMBTU24.38 83.21* Does not include capital cost/ <strong>Biomass</strong> Priced@$50/dry ton
• UL Lafayette• Cleco Power LLC• LA Biofuel Resources LLC• Industrial Ties Research Sub Program(ITRS), LA Board of Regents, ContractNo: LEQSF (2012-2015)-RD-B-07• Students (Robert Bentley, AdamSellers, Philip Aucoin, Molly Ducas,Christina, Eathan Wyble, Jake Seiber,Joseph Vutukuri
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