sustainable energy ireland
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Sustainable Energy Ireland. Exploiting the Resource David Raubenheimer March 2004. Fibrowatt Overview. Developer owner operator Power from agricultural residues 65 MW operational 2,650,000 MWh produced, 3.7 million tonnes fuel Overview of Fibrowatt’s plants. The Carbon Cycle. - PowerPoint PPT PresentationTRANSCRIPT
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Sustainable Energy Sustainable Energy IrelandIreland
Exploiting the Resource
David Raubenheimer
March 2004
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Fibrowatt OverviewFibrowatt Overview
• Developer owner operator• Power from agricultural residues• 65 MW operational• 2,650,000 MWh produced, 3.7
million tonnes fuel• Overview of Fibrowatt’s plants
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NUTRIENTS
CARBON (CO2)
Flue Gases
Ash
ELECTRICITY
EN
ER
GY
BIOMASSBEDDING
& FEED
MANURE
The Carbon CycleThe Carbon Cycle
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Power StationsPower Stations
Power Station
Company MW Location
Eye (World’s first)
Fibropower 12.7MW Suffolk
Glanford Fibrogen 13.5MW N Lincs
Thetford Fibrothetford 38.5MW Norfolk
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FibropowerFibropower
Commissioned Jul 1992 Design output 12.7MW
Burns 150,000 t/yr of poultry litter & other biomass
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Fibropower - Operational Fibropower - Operational ExperienceExperience
• Development of know-how• Fuel characterisation difficult• Biomass knowledge fragmented• No available standards• Now runs exceptionally well• New fuels trialled
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FibrogenFibrogen
Commissioned Nov 1993Design output 13.5MW
3-5 yr Govt contract for 85,000 t/yr of meat & bone meal
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FibrogenFibrogen
• Commercially similar to Fibropower
• 8% larger• New fuel handling – design trials• Technically very successful• Achieves 90 – 100% availability• Converted to burn MBM
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FibrothetfordFibrothetford
Commissioned 1998 Design output 38.5MWBurns 460,000 t/yr of poultry litter & other biomass
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FibrothetfordFibrothetford
• Significant scale up – 3x• New fuel storage – design trial• Environmentally sensitive site• Environmental standards changed• Construction contractors more
cautious• Scale up caused technical
problems• Now running well
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How it Works – How it Works – in the plantin the plant
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Technology – Current Technology – Current PlantsPlants
Fibropower Fibrogen Fibrothetford
Fuel Handling Cranes Cranes Augers/Conveyors
Fuel Feeding Mass Pneumatic Air Distributor
Grate Reciprocating Chain Grate Chain Grate
Boiler ‘Folded’ ‘Folded’ Bi-Drum
Balance Conventional Conventional Conventional – Ash more complex
Emissions Control
Electrostatic Precipitator
Bag Filter/
Semi dry scrubber
Bag Filter/
Dry line injection
Steam Conditions - 65 Bar, 450°C to 475°C – all plants
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Fuel Pits at FibrogenFuel Pits at Fibrogen
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Thetford Fuel HallThetford Fuel Hall
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Fuel Trucks UnloadingFuel Trucks Unloading
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Fibrogen - MBM Fibrogen - MBM ConversionConversion
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Inside Inside the the
BoilerBoiler
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Technology - ResultsTechnology - Results
• Poultry litter burns very well• Characterisation is difficult• Handling needs care• Combustion performance• Certain arrangements excluded
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Technologies ReviewedTechnologies Reviewed
• Have reviewed a number• Stepwise development strategy• Fluidised Bed• Gasification• Digestion• High tech may be
counterproductive
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What a Project NeedsWhat a Project Needs
• Available, contactable & characterised fuel supply
• Affordable electrical connection• €4+ million to develop• 2 - 5 yrs development, 2 yrs
construction• Incentivised construction
contractors• Available land and local support
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What a Project Needs (2)What a Project Needs (2)
• Power Purchase Agreement– Bankable
– Long term (construction +15 years)
– Technology specific
• Ash fertiliser sales routes• Abundant political support
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SummarySummary
• 2,650,000 MWh• 3,700,000 tonnes of fuel • Significant teething problems
overcome• Structure new market with care• Particularly the Power Sale
arrangements• Consistent and broad political
support