Reed canary grass as an energy crop

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Reed canary grass as an energy crop Håkan
Örberg Unit of biomass technology and chemistry
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Reed Canary Grass research at SLU/BTK  
Establishing crop Crop treatment  
Harvesting and transport   Storage  
Upgrading to Briquettes and pellets  
Combustion
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Perennial rhizomatous GrassReed Canary Grass

• A high yield crop in humid areas
• Resistant to diseases and damage by insects
• Establishing by seeding
• Agricultural machineries can be used by
  harvesting and seeding

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Delayed harvest of Reed Canary Grass

• 1. Washing by winter rain gives lower K and Cl
  contents
• 2. Harvest in early spring time gives dry
  material . 12-15 water
• 3.High losses

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Regions in screening trails
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Yield of delayed harvested RCG in Northern Europe
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Fertilizing kg/ha

• Year 12 N P K
• 150 40
  150
• Year 3-10/year 80 10 10
• Based on a yield of 7500 kg/ha

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Harvesting studies

• Harvesting methods
• Combination of machineries
• Capacity measurements
• Defining period length of harvest
• Defining yield and losses
• Defining d.m.values

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Storage studies

• Different cover methods
• Different stacking methods
• Time consumption
• Cost calculating

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Upgrading to pellets or briquettes

• Capacity and quality measurements
• Electrical consumption measurements
• Optimizing processing parameters
• - Grinding, sieving, steam conditioning
• - Die type
• System analysis

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Bio fuel pilot plant
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Conveyor and shredder
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Briquette machine
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Pellets press
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Combustion

• Combustion tests
• Emission measurements
• Ash melting characteristics
• Combustion efficiency

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Boiler 150-600 kW
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