No flares but electricity

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No flares but electricity

• Jacob KLIMSTRA
• Wärtsilä Power Plants

150 Gm3/year flared 6 of worldwide gas use 1.5
of Total Primary Energy Supply
2
A reciprocating engine generator the solution
3
Example High fuel efficiency of a reciprocating
engine
90
80
Combined efficiency
70
60
Heat fraction
flat efficiency
50
Fraction of fuel input ()
40
30
20
electrical efficiency
10
0
0
10
20
30
40
50
60
70
80
90
100
Electric power ()
4
The common Otto-cycle gas engine the challenge
of gas quality

• Knock resistance methane number gt 60
• Dry, sweet and free of condensates and particles

Exhaust
Intake
But we have the Gas-Diesel engine GD
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The gas diesel (GD) working principle
Exh
Exh
Exh
Air
Air
Air
Injection of Gas and Pilot Fuel Ignition
Air Intake
Compression of Air

• Diesel fuel serves as the igniter
• Gas is injected simultaneously with the diesel
• Knocking can not occur

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GD Gas operation mode
100
90
Fuel Share
80
70
60
Gas
50
Liquid
40
30
20
Constant fuel amount at 3 - 5 of 100 load
10
0
0
10
20
30
40
50
60
70
80
90
100
Load
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Fuel specs for the GD
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Reference Dygoil

• Dygoil, Equador
• 2 x Wärtsilä 16V32GD
• 11MWe
• The power plant started up in March 2004, and it
  operates with oil field associated gas as the
  main fuel, and Crude oil as supplementary fuel
• The plant is designed to utilize the associated
  gas and to minimize the need for flaring, and
  unnecessary CO2 emissions are avoided

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No power problem if the gas flow varies
Gas
Diesel
share
share
100
0
diesel pilot
GD operation
90
10
80
20
70
30
60
40
gas and oil share adjustable
50
50
Fuel Sharing
Fuel Sharing
40
60
30
70
20
80
Transfer window
10
90
Fuel oil operation
0
100
0
10
20
30
40
50
60
70
80
90
100
Engine load
10
GD Engines power range
Engine Type Wärtsilä 32GD Wärtsilä
46GD Cylinder bore, mm 320
460 Speed, rpm 720 / 750 500 / 514 Heat
Rate (ISO), kJ/kWhe 8,270 43.5
8,050 44.7 Fuel oil qualities Diesel
oil Diesel oil Heavy fuel oil Heavy fuel
oil Crude oil Crude oil Gas
qualities Natural gas Natural
gas Associated gas Associated gas Cylinder
configurations - V-form 12, 16, 18 12, 16,
18 Generator power, kWe 4,320
6,500 11,300 17,000
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Compression power
350 bar
43.5 0.954 41.5
Gas LHV 30 MJ/Nm3, dicharge pressure 350
bar(a)
500
kW
450
400
4.6 of power
350
18V32GD
16V32GD
300
12V32GD
250
200
150
100
50
0
bar
0
10
20
30
40
50
60
70
80
90
100
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Other possibilities at the horizon
GASPAC
any gas
methane
inverse reformer
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For YOU to remember

• Flaring can be reduced and the gas can be used
  with high
• Fuel flexibility
• Power flexibility
• Fuel-to-power efficiency

Wärtsilä can help you