Biomass combustion plants Examples in Germany and United ... · 1 Institute of Waste Management and Contaminated Site Treatment Biomass combustion plants Examples in Germany and United

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Biomass combustion plants

Examples in Germany and United Kingdom

C. Hahn, C. Ludwig, P. Werner

BiWaRE – Biomass and Waste for Renewable Energy

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Power generationHeat generation Combined heat and power generation

Purposes

SizesUp to 15 kW household sector – water and room heating

Up to 1 MW commercial business-

Firing systems:

Underfeed firing, shaft furnance

Higher than 1 MW: mostly combined heat and power generation

- higher than 100 MW are not effective

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Biomass fuel

Residual and wasteCereal straw

•Foliage plant residuals

•Wood and animal wastes

•Residual wood

•Organic wastes from household

•Industrial wastes

Cultivated biomass for combustion purposes

Energy plantations

e.g. Fast growing wood,rape

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Types of fuel used

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Examples of Biomass combustion plants

Pfaffenhofen

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Wood combustion plant Melle Buer

Purpose: heating system of school buildingsFuel: wood chips from local forestry

and biodiesel (stand-by)In operation since: 2001Operated by: OVE Energie GmbH & Co. KGInvestment costs: 383.000 €Capacity: 2 * 450 kWAnnual Heat generation: 800 MWh/a

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E-1

Cyclon with induced draught fan

Boiler with underfeed furnaceand continuously variable cinder outlet

Ash drain

P-10

Cleaned fumes

Storage wihScrew conveyor

Cinder outlet

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Biomass heat and power plant PfaffenhofenManufacturer: Babcock and Wilcox Vølund ApS

Operated by:Biomasse Heizkraftwerk GmbH

In operation since: 1991

Maximum capacity: 23.5 MW heat capacity

6 MW electricity

200 000 MWh/a heat

42 000 MWh/a electricity

Fuel utilised:untreated fresh wood chips and remaining wood from saw mills, water content up to 60%

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E-5

E-1

E-2

E-4

E-7

V-1

Storage and conveyor Boiler with moving grate stoker firing

Electricity and heat

multicyclone Electrostaticprecipitator condenser

Cleaned fumes

Filter ashFly ashBoiler ashCinder outlet

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Biomass combustion plant Gmünden

Purpose: heating system for two schools and one swim hall

fuel utilised: wood chips

In operation since: 2001

In peak period demand: natural gas

Investment costs: 1.013.300 €

Capacity

wood chips: 650 kW

natural gas: 1.750 kW

Annual capacity

wood chips: 2550 MWh/a

natural gas: 150 MWh/a

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Cinder outlet Flue ash

Cleaned fumes

Boiler with underfeed furnaceand continuously variable cinder outlet

Storage wihScrew conveyor Electrostatic filter

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Straw combustion plant Schkölen

Purpose: community heating system for the small city of Schkölen

Fuel: gramineous biomass

-Straw is pressed into oblong bales

-Bales are pushed continiously into the combustion chamber (cigar burner)

Generated heat power: 3,15 MW

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Straw combustion plant Schkölen

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Glanford

EyeThetford

Ely

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Biomass combustion plant GlanfordOperated by: EPRProject company: Fibrogen ltdManifacturers

boiler: Aalborg Boilers A/Sturbine: NEI-Allen

In operation since: November 1993recommission: May 2000

Process type: conventional moving grateboiler and steam cyclone

Types of substrate: Poultry litter meat and bonemeal

Maximum capacity: 13,5 MWInvestment costs: 24 000 000 £

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Biomass combustion plant Thetford Operated by: Fibrothetford LtdManifacturersboiler: Forster Wheeler Ltd Canadaturbine: Ansaldo Energia SpAGrate system supplier: Detroit Stoker Inc.In operation since: june 1999Fuel handling system supplier: BirtlyEngineering plcProcess type: conventional moving grateboiler and steam cycloneType of substrate: Poultry litter, chicken litter, feather and other agricultural residuesTroughput of substrate: 420 000 Mg litter/aInvestment costs: 56 000 000 £

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Biomass combustion plant Eye

Operated by: Fibrothetford LtdManifacturersboiler: Aalborg boilersturbine: NE-Allen In operation since: july 1992Process type: conventional moving grateboiler and steam cycloneType of substrate: Poultry litter, horse bedding,feathers Maximum capacity: 12,7 MWTroughput of substrate: 160 000 Mg litter/aInvestment costs: 22 000 000 £

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Biomass combustion plant Ely

Operated by: EPR Ely and Cinergy Global PowerManifacturers:FLS MiljoIn operation since: December 2000Process type: vibrating gate with conventional steam cycleType of substrate: Oil seed rape and miscantuhus,cereal straw, up to 10 % natural gas

Maximum capacity: 39 MW, 270 GWh/aTroughput of substrate: 200 000 Mg litter/aInvestment costs: 66 000 000 £

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