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Retrofit Moteur Diesel Wärtsilä en Dual fuel
Colloque optimisation énergétique des navires de commerce. ENSM le 17 et 18 Janvier
2012 Marseille
Présenté par J-M Henry Resp. com. Wärtsilä France
© Wärtsilä Jean-Michel Henry ENSM Marseille Jan 17 & 18th 2012
Contents
DF Technology
The DF advantage
The „Tarbit“ project CONVERSION
(From Wärtsilä 46 To Wärtsilä 50DF Engine)
© Wärtsilä Jean-Michel Henry ENSM Marseille Jan 17 & 18th 2012
Wärtsilä Dual-Fuel Engine Portfolio Wärtsilä Dual-Fuel Engine Portfolio
0 5 10 15
34DF
20V34DF 9.0 MW
12V34DF 5.4 MW
9L34DF 4.0 MW
6L34DF 2.7 MW
16V34DF 7.2 MW
18V50DF 17.55 MW
16V50DF 15.6 MW
12V50DF 11.7 MW
9L50DF 8.8 MW
8L50DF 7.8 MW
6L50DF 5.85 MW 50DF Higher output for 60Hz / Main engines
20DF
9L20DF 1.6 MW
8L20DF 1.4 MW
6L20DF 1.0 MW
© Wärtsilä Jean-Michel Henry ENSM Marseille Jan 17 & 18th 2012
Dual-fuel engine characteristics • High efficiency • Low gas pressure • Low emissions, due to:
High efficiency Clean fuel Lean burn combustion
• Fuel flexibility Gas LFO (DF) Bio Fuel HFO (TF)
• Double wall gas piping The engine room is a gas
safe area
• Three engine models Wärtsilä 20DF Wärtsilä 34DF Wärtsilä 50DF
34DF
50DF
20DF
© Wärtsilä Jean-Michel Henry ENSM Marseille Jan 17 & 18th 2012
•* •* •* •* •* •* •* •*
•* •* •* •* •* •* •* •* •* •* •* •* •*
•* •*
Intake of air and gas
Compression of air and gas
Ignition by pilot diesel fuel
Otto principle
Low-pressure gas admission
Pilot diesel injection
Gas mode: •Ex. •In. •Ex. •In. •Ex. •In.
Intake of air
Compression of air
Injection of diesel fuel
Diesel principle
Diesel injection
Diesel mode: Ex. In. Ex. In. Ex. In.
Dual-fuel engine - operating principle
© Wärtsilä Jean-Michel Henry ENSM Marseille Jan 17 & 18th 2012
Engine systems - Control system
• •Operating •window
•The
rmal
effi
cien
cy [
% ]
•NO
x em
issi
ons
[ g /
kW h
]
•BM
EP
[ bar
]
•Air / Fuel ratio
•Knocking
•Mis
firin
g
•Optimum performance •for all cylinders
© Wärtsilä Jean-Michel Henry ENSM Marseille Jan 17 & 18th 2012
Fuel system in cylinder head – double walled gas piping Components
•Pilot fuel common rail 900bar •Main fuel injection pipe •Main fuel injection pump
•Main fuel quill pipe •Pilot fuel quill pipe
•Twin nozzle injection valve
•Inlet valve
•Gas manifold •Gas bellows •Fine filter •Gas valve •Gas nozzle
•Gas valve electrical connection •Injection valve electrical connection
© Wärtsilä Jean-Michel Henry ENSM Marseille Jan 17 & 18th 2012
To GVUProduct evaporator
PBU
LNG
Gas
Anti-freeze heating media
LT-water
LNG
Gas
Anti-freeze heating media
LT-water
LT- water heat exchanger
Bunkering station
Cold Box
LNGPac Simplified P&ID
© Wärtsilä Jean-Michel Henry ENSM Marseille Jan 17 & 18th 2012
Contents
DF Technology
The DF advantage
The „Tarbit“ project CONVERSION
(From Wärtsilä46 To Wärtsilä 50DF Engine)
© Wärtsilä Jean-Michel Henry ENSM Marseille Jan 17 & 18th 2012
Dual-Fuel advantages
Time
Engine speed DF change to
liquid mode
DF & SG Normal load application
DF & SG Instant load application DF
Big instant load application (trips to liquid)
SG Instant, abnormal high load application
Main advantages of the Dual-Fuel 4-stroke engine compared to SG (spark ignited): • Simple mechanical propulsion application
– Full power available in both fuel operation modes • Load application capability
– Load application capability is equal between dual-fuel and SG – Dual-fuel can change to liquid fuel in case instant abnormal high load / unload
requirement (no shut-down) – Changeover point can be programmed to suit application
Improves safety
© Wärtsilä Jean-Michel Henry ENSM Marseille Jan 17 & 18th 2012
Natural Gas As Marine Fuel
CO2
NOx
SOx
Particulates
Dual-Fuel engine in gas mode
Diesel engine
0
10
20
30
40
50
60
70
80
90
100
Emission values [%]
-25%
-85%
-100%
-100%
© Wärtsilä Jean-Michel Henry ENSM Marseille Jan 17 & 18th 2012
0
4
6
10
12
16
14
8
2
18
250 500 1000 1500 2000 0
NO
x [g
/kW
h]
Rated engine speed [rpm]
50DF Engine (in diesel mode)
Environmental challenge
IMO NOx emissions regulations
IMO Tier I - New ships 2000 IMO Tier II - New ships 2011 IMO Tier III - New ships 2016 in designated areas
50DF Engine (in gas mode)
© Wärtsilä Jean-Michel Henry ENSM Marseille Jan 17 & 18th 2012
Emission Control Areas
existing ECAs: Baltic Sea, North Sea
planned ECAs: Coasts of USA, Hawaii and Canada
discussed ECAs: Coasts of Mexico, Coasts of Alaska and Great Lakes, Singapore, Hong Kong, Korea, Australia, Black Sea, Mediterranean Sea (2014), Tokyo Bay (in 2015)
Most used trading routes
Proliferation of ECA areas is expected in the next future
© Wärtsilä Jean-Michel Henry ENSM Marseille Jan 17 & 18th 2012
The DF vessel concept
LNG MDO
The DF engines will only use gas fuel inside ECA areas Safety and reliability of the traditional diesel engine remain
No SOx Scrubber, No sulphur in fuel
No SCR unit, Tier III compliant
MDO as backup fuel
© Wärtsilä Jean-Michel Henry ENSM Marseille Jan 17 & 18th 2012
The DF vessel concept, outside ECA
LNG MDO/HFO
The DF engines can be run on HFO outside ECA areas
No SOx Scrubber
No SCR unit
Optional HFO flexibility
when allowed
© Wärtsilä Jean-Michel Henry ENSM Marseille Jan 17 & 18th 2012
Contents
DF Technology
The DF advantage
The „Tarbit“ project
(From Wärtsilä 46 To Wärtsilä 50DF Engine)
© Wärtsilä Jean-Michel Henry ENSM Marseille Jan 17 & 18th 2012
TARBIT PROJECT
DWT 24783 ton
GT 17757 ton
Displacement 33788 ton
Length p.p. 166.99 m
Length o.a. 177.02 m
Keel To Mast Height 44.85 m
Draught 9.7 m
Breadth Extreme 26.3 m
Breadth Moulded 26 m
Speed 16 kn
Vessel delivery date 17.09.2007
Vessel typology 25'000 dwt Chemical tanker
Owner Tarbit Shipping AB
Ship Builder Shanghai Edward Shipbuilding Co Ltd
Flag Sweden
Class Germanischer Lloyd
20 May 2011 © Wärtsilä Jean-Michel Henry ENSM Marseille Jan 17 & 18th 2012
Main facts
Vessel owned by Tarbit Shipping AB (Sweden)
Operated under time charterer by Statoil
Sailing in Norwegian waters
Conversion partially financed by Norwegian “Næringslivets Hovedorganisasjon” (Confederation of Norwegian Business and Industry)
Built by Edward Shipbuilding Co Ltd (Hudong-Zhong JV)
Designed by Wärtsilä Ship Design (former Skipskonsulent )
© Wärtsilä Jean-Michel Henry ENSM Marseille Jan 17 & 18th 2012
Background: main engine conversion
before 2 x W6L46B
5850 kW each
WÄRTSILÄ 8L20 1200 kW
CPP
CPP
PTO 1500 kW
PTO 1500 kW
WÄRTSILÄ 8L20 1200 kW
after 2 x W6L50DF 5700 kW each
© Wärtsilä Jean-Michel Henry ENSM Marseille Jan 17 & 18th 2012
Background: scope of conversion
Scope of supply:
Ship Design Engine conversion LNGPac system (2 x 500m3) Gas supply units Torque meter for power measurement Bunkering system Gas piping (single and double walled) Exhaust system Fire-fighting upgrade Gas detection system Electrical system Additional NOx measurement during sea trial DF and LNGPac training for personnel
© Wärtsilä Jean-Michel Henry ENSM Marseille Jan 17 & 18th 2012
Today!
© Wärtsilä Jean-Michel Henry ENSM Marseille Jan 17 & 18th 2012
LNGPac production and transportation
© Wärtsilä Jean-Michel Henry ENSM Marseille Jan 17 & 18th 2012
LNGPac production and transportation
© Wärtsilä Jean-Michel Henry ENSM Marseille Jan 17 & 18th 2012
LNGPac onboard installation
© Wärtsilä Jean-Michel Henry ENSM Marseille Jan 17 & 18th 2012
LNGPac onboard installation
© Wärtsilä Jean-Michel Henry ENSM Marseille Jan 17 & 18th 2012
LNGPac onboard installation
© Wärtsilä Jean-Michel Henry ENSM Marseille Jan 17 & 18th 2012
LNGPac onboard installation
LNGPac
“Cold-box”
Bunkering stations
Vent masts
Drip trays
© Wärtsilä Jean-Michel Henry ENSM Marseille Jan 17 & 18th 2012
Bunkering station and drip tray
Bunkering station (enclosed), under
construction
Drip tray
© Wärtsilä Jean-Michel Henry ENSM Marseille Jan 17 & 18th 2012
Bunkering station and drip tray
Drip tray, under construction
© Wärtsilä Jean-Michel Henry ENSM Marseille Jan 17 & 18th 2012
Single-wall piping on weather deck
1. Single-wall piping, thermally insulated, installed on the weather deck.
2. Work finalized with damage protection
© Wärtsilä Jean-Michel Henry ENSM Marseille Jan 17 & 18th 2012
Single and Double-wall pipe
Inner pipe
Outer pipe
Annular space equipped with mechanical under pressure ventilation (capacity of at least 30 air
changes per hour).
Double wall pipe Single wall pipe
Pipe on open-air deck thermally insulated
© Wärtsilä Jean-Michel Henry ENSM Marseille Jan 17 & 18th 2012
Engine up-grade
LNG product tanker
© Wärtsilä Jean-Michel Henry ENSM Marseille Jan 17 & 18th 2012
DF conversion – Parts which will be exchanged
Turbocharge
rs modified
for DF
operation
Camshaft
pieces for
DF Miller
valve timing
Cylinder
heads
Pistons &
piston
rings
Cylinder liner
& anti-
polishing ring
Connecting
rods
(upper part)
Dual-
needle
injection
valve
Control
system
UNIC
© Wärtsilä Jean-Michel Henry ENSM Marseille Jan 17 & 18th 2012
DF conversion – Components added on the engine
Gas rail pipe
Gas admission
valves
Exhaust gas
waste gate
Pilot fuel system:
- Pilot fuel oil filter
- Common rail piping
- Pilot fuel oil pump
© Wärtsilä Jean-Michel Henry ENSM Marseille Jan 17 & 18th 2012
Engine conversion
Double-walled gas manifold
Exhaust gas manifold
Gas-admission valves
© Wärtsilä Jean-Michel Henry ENSM Marseille Jan 17 & 18th 2012
Torque meter placement in mechanical drive (DF) installation
© Wärtsilä Jean-Michel Henry ENSM Marseille Jan 17 & 18th 2012
Gas Valve Unit
50DF Gas Valve Unit horizontally oriented
© Wärtsilä Jean-Michel Henry ENSM Marseille Jan 17 & 18th 2012
20.10.2011 – First LNG Bunkering
© Wärtsilä Jean-Michel Henry ENSM Marseille Jan 17 & 18th 2012
20.10.2011 – First LNG Bunkering
© Wärtsilä Jean-Michel Henry ENSM Marseille Jan 17 & 18th 2012
20.10.2011 – First LNG Bunkering
© Wärtsilä Jean-Michel Henry ENSM Marseille Jan 17 & 18th 2012
Dual-Fuel applications - References
4 segments 150 installations > 3’000’000 running hours
Power Plants
DF Power Plant 49 installations 155 engines Online since1997
Merchant
LNGC • 89 vessels • 353 engines • 1’000’000 rh Conversion • 1 Chem. Tanker • 2 engines conv. • Complete gas
train • Complete design
Offshore
PSVs/FPSOs • 17 vessels • 87 engines • Online from 1994 New orders! • Harvey Gulf: the
first 3 LNG-PSV to be operated in the Gulf of Mexico!
Cruise and Ferry
LNG ferries • 1+1 vessels • 4 engines per
vessels • Complete gas
train • 2800 passengers • In service in 2013
Navy
Costal Patrol • Coming…
© Wärtsilä Jean-Michel Henry ENSM Marseille Jan 17 & 18th 2012
Thank you!
© Wärtsilä Jean-Michel Henry ENSM Marseille Jan 17 & 18th 2012