Modern biomass utilisation

Gert Schultz - Energi E2 - Denmark

Modern biomass utilisation

„

Facts:

„

839 PJ Gross Energy Consumption

„

52.7 million tons CO

2

„

Electricity capacity

- 13,400 MW Installed capacity

– of which: 55% CHP

- 3,000 MW wind turbines

„

Electricity production

- 40 TWh

– of which 6.7 TWh from wind turbines

Modern biomass utilisation

„

More facts:

„

Renewable energy

- 15% of gross energy consumption

„

Biomass

- 12% of gross energy consumption

„

Wind:

-

3% of gross energy consumption

- 16% of electricity production

Danish CO

2

emission 2004

million tons

20

15

8

3

4

2

Electricity

Transport

Industry

Distr. Heating

Households

Oil refinery

Modern biomass utilisation

„

Policy Measures

„

Fossil fuels

- Energy tax

- CO

2

tax

- SO

2

tax

„

Renewable energy

- Subsidies: 5 to 8 €-cent / kWh

„

Biomass agreement

Gross Energy Consumption in Denmark

2004 (PJ)

344

184

195

126

Oil

Coal

Natural Gas

Renewable

Renewable Energy Consumption

Denmark 2004 (PJ)

4

4

26

20

32

40

Straw

Wood

Waste (MSW)

Wind

Heat Pumps

Biogas

0

300

600

900

1200

1500

1800

1989

1993

1997

2001

2005

1000 tons

Wood

Straw

Use of Biomass in Danish power plants

Location

Wood

Straw

Total

Tons/year

Tons/year

Tons/year

Status 2000

10

70,000

360,000

430,000

New plants:
2001

Avedoere

150,000

Rebuilding:
2002

Avedoere

300,000

2002

Studstrup

250,000

2003

Amager 2

150,000

2003

Herning

200,000

2000-2006

6

500,000

550,000

1, 050,000

Status 2006

15

570,000

910,000

1,480,000

2008

Fyn

150,000

2008

Amager 1

250,000

Biomass-fired power plants in Denmark

Modern biomass utilisation

Biomass

LHV

Density

Ash

MJ/kg

kg/m

3

% d.m.

Straw

14,5

130

5

Straw pellets

15,0

600

5

Wood chips

10,5

300

0,5

Wood pellets

17,5

650

0,5

Coal

25

1000

13

Avedoere Power Station

2001

Unit 2: 510 MW el + 565 MJ/sec heat

Wood pellets: 300,000 tons
Straw:

150,000 tons

+ Natural Gas + Fuel Oil

1990

Unit 1: 214 MW el + 330 MJ/sec heat

Coal:

700,000 tons

+ Fuel Oil

Straw

Natural Gas

Natural Gas

Fuel Oil

Wood Pellets

(max 70% load)

Natural Gas

Biomass

Boiler

Main Boiler

580/600/300 bar

Steam Turbine

Gas Turbine unit

Electrical power

Electrical power

District heat

Avedøre Power Station unit 2

590 MW

el

/ 0 MJ/s

510 MW

el

/ 565 MJ/s

Straw pellets at Amager Power Station unit 2

Heat accumulator

1

2

3

Coal yard

Geothermal plant

Wood pellet storage

82 MW el or 56 MW el + 180 MJ/sec heat
150,000 tons straw pellets

Studstrup Power Station

700 MW el or 520 MW + 910 MJ/sec heat
Coal:

1,000,000 tons

Straw:

250,000 tons

Other biomass:

100,000 tons

+ Fuel Oil

Ensted Power Plant – Straw & Wood chips

Straw: 120,000 tons

Wood chips: 30,000 tons

Herning Power Plant

89 MW
Wood chips: 200,000 tons

Køge Pellet Factory

1

2

3

4

5

6

8

6

10

9

7

1)

Raw wood chips

2)

Wood and straw
pellets plant

3)

Storage for straw
bales

4)

Power plant

5)

Power plant

6)

Pipe conveyor for
straw and wood
pellets

7)

Straw pellets store

8)

Wood pellets store

9)

Harbour

10) Wood floor factory

Wind turbines – Numbers and capacity

0

1.000

2.000

3.000

4.000

5.000

6.000

7.000

197

7

198

0

198

3

198

6

198

9

199

2

199

5

199

8

200

1

200

4

År

Number

o

f

tur

b

in

es

0

500

1.000

1.500

2.000

2.500

3.000

3.500

Capacit

y

(

M

W

)

Number

MW

Wind turbines in Denmark

Biogas

Production: 4 PJ

Units: 145

Potential: 40 PJ

CO

2

reduction

CH

4

reduction

1 million tons straw per year in big bales

+600,000 tons wood chips and round logs per year

Pellet factory – 180,000 tons wood pellets / year

+ 120,000 tons import

Pellet factory – 150,000 tons straw pellets / year

Thank

you for your attention

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