gas to powerx(1)s(in32wke1h2kt0... · gas to power dr. jacob klimstra wärtsilä power plants
TRANSCRIPT
Gas to Power
Dr. Jacob KlimstraWärtsilä Power Plantswww.wartsila.com
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An example of power demand
05
101520253035404550
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
year of operation
pow
er re
quire
men
t total power
from associated gas
from alternative
….. + associated gas availability
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And even more varies ........
• The gas heating value: 42 MJ/m3 - 25 MJ/m3
• The gas Wobbe index: 45 MJ/m3 – 30 MJ/m3
• The knock resistance (Methane number) 70 – 40• The daily gas flow
Required, a technology that:Is insensitive to gas quantity and qualityCan use a back up fuel Has a high utilisation efficiency
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A reciprocating engine + generator : the solution
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The technology: a gas-diesel engine
350 bar
43.5 * 0.954 = 41.5 %
Associated gas
Gas spray
Diesel spray
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Operation in ‘full’ gas mode
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Load %
Fuel Share %
GasLiquid
Constant liquid fuel amount 3 - 5 % of energyinput at 100 % load
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Fuel Sharing
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Engine load%
Gasshare %
Dieselshare %
GD operation
Transfer window
Fuel Sharing
No power problem if the gas flow varies
complement with crude, HFO, MDO, LFO
diesel pilot
gas and oil share
adjustable
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The efficiency
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0 20 40 60 80 100
engine-generator load (%)
gene
ratin
g ef
ficie
ncy
(%)
Close to flat line
Ideal for:
-islanding
-spinning reserve
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A modular approach
Repeatability, flexibility, adaptability, reliability
- 10 -10 © Wärtsilä Thomas Hägglund
0%
5%
10%
15%
20%
25%
30%
35%
40%
45%
0 5 10 15 20 25 30 35 40
Plant Electrical Power (MW)
Elec
tric
al e
ffici
ency
(%)
Source: Alstom product broschure 01; Wärtsilä perf
5 x 20V34SG
Industrial GT
•The multi unit gas engine power plant has very high part load efficiency.•Example with 5X20V34SG ~45 MW plant
Multi unit gas engine power plant
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Fuel-sharing reference in Equador
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Even more energy available
chiller
engine generator 10MW
Electr.
6.5 MW chill
2 MW heat
2 MW heat
23 MW fuel
For gas treatment or selling
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Not only electric power……
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References: Storage
Lentransgaz, RussiaGas Storage aquifier- 440 000 Nm3/h; 45 -> 150 bar - 4 x 18V28SG + reciprocating
compressor- in operation since 2005
REN - Armazenagem, S.A, PortugalGas storage in salt caverns- 100 000 Nm3/h; 37 -> 187 bar - 2 x 16V25SG + reciprocating compressor- in operation since 2005
Gas engines as compressor drivers
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To remember
1. Fuel flexibility
2. Power flexibility
3. Fuel-to-power efficiency
Flaring can be reduced and the gas can be used with high:
www.wartsila.com