© Wärtsilä

WÄRTSILÄ

AIR EMISSION SOLUTIONS

RUDOLF WETTSTEIN

MARKETING & APPLICATION DEVELOPMENT

WÄRTSILÄ SWITZERLAND LTD

14 June 20111

© Wärtsilä 14 June 20112

How we meet IMO MARPOL Annex Vl Air Emission

legislation

• with marine diesel engines burning heavy fuel oil

• with marine dual-fuel engines burning natural gas

© Wärtsilä

IMO MARPOL Annex Vl, NOx emissions

14 June 20113

Tier I > 130 kW - New ships 2000 Tier II > 130 kW - New ships 2011

Tier III > 600 kW - New ships 2016 in designated areas

0

2

4

6

8

10

12

14

16

18

0 100 200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 2100

Rated engine speed (rpm)

NO

x (g

/kW

h)

Area for NOR SCR to reduce NOx

Area for Primary Methods

SCR for 4-stroke engines

Ready product

Orders >160 units hereof

in operation > 130 units

SCR for 2-stroke engines

Pre-TC SCR with engine integration

3 units in operation

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SCR arrangement for medium-speed engines

14 June 20114

Pumping unit

Control unit

Dosing unit

Urea tank

SCR

reactor

Pressurized air vessel

Soot blowing

Urea injection

Mixing duct

• Urea consumption ~ 15-20 l/MWh

(depending on the raw emissions)

• Operational cost ~ 6 €/MWh

(Urea, replacement of catalytic

elements)

• Investment cost ~ 25-50 €/kW

© Wärtsilä

SCR examples, low-speed engine

14 June 20115

Single TC

Multi TC

© Wärtsilä 14 June 20116

Reference SCR

Engines: 1 Main engine • Sulzer 7RTA52U (10‟920kW)

2 Auxiliary Engines • Wärtsilä 6L20

Vessels: M/V “Spaarneborg”

M/V “Schieborg”

M/V “Slingeborg”

Type of ship: RoRo

Owner: Wagenborg

1st vessel in service: December 1999

Certificate: NOX-emissions < 2g/kWh

© Wärtsilä 14 June 20117

Candidate technologies IMO Tier III, low-speed engines

• Activities on wide range of technologies for providing the best fit(s) for our

clients

• Total cost of ownership

• Technical feasibility and reliability – also a fuel issue

Charge Air Cooler

Tu

rbin

e B

yp

ass

Intercooler

HP

T

LP

T

LP

C

HP

C

2

Exhaust

out

Air

in

12

11 3

1

8

8

7

9 11

7 M

4

8 6

10

5

2

Exhaust

out

Air

in

12

11 3

1

8

8

7

9 11

7 M

4

8 6

10

5

2-stage TC EGR WaCoReG SCR

Examples of technology development for Tier III compliance

© Wärtsilä 14 June 20118

Sulphur abatement technology

2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020

SOX limit: max. 4,5 % S SOX limit: max. 3,5 % S SOX limit:max. 0,5 % S

Global

SOX limit:max. 1,5 % S

SOX limit: max. 1,0 % S SOX limit: max. 0,1 % S

Emission control areas

Fresh water scrubber (closed loop)

Market introduction phase

Hybrid scrubber, fresh- or seawater (open loop)

Under development

Using NaOH

SO2 reduction: > 97 %

Specially fitted for brakish waters

Using NaOH or sea water

Optimised for all watersheds

MT Suula

Pilot scrubber

© Wärtsilä 14 June 20119

Sail on

GAS reduce emission at the source

© Wärtsilä

Natural gas as marine fuel – medium-speed engine

14 June 201110

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%

NOx Tier lll (2016) and SOx level in ECA (2015) are fully met !

© Wärtsilä 14 June 201111

Select the right technology

******** ***

******** ***

*********

* *

GAS INJECTION

GAS INJECTION

GAS INJECTION

DUAL-FUEL (DF)

Meets IMO Tier III

SPARK-IGNITION GAS (SG)

Meets IMO Tier III

No redundancy

No HFO flexibility

GAS-DIESEL (GD)

Does NOT meet IMO Tier III

High gas pressure

© Wärtsilä 14 June 201112

Wartsila‘s choice for medium-speed

******** ***

GAS INJECTION

DUAL-FUEL (DF)

Meets IMO Tier III

1 IMO Tier III compliant

2 Low pressure gas

3 Fuel flexibility; GAS, MDO and HFO

© Wärtsilä

Gas engines on order/service

14 June 201113

Power Plant

752 engines since 1989

SG/DF/GD

Offshore

22 installations

78 engines since 1994

DF/GD

LNG Carriers

68 installations

254 engines, DF

>1 000 000 running hours

Total of ~1100 gas engines

on order/service

© Wärtsilä

Dual-Fuel Engine Portfolio

14 June 201114

0 5 10 15

34DF

20V34DF

12V34DF

9L34DF

6L34DF

16V34DF

18V50DF 17.55 MW

16V50DF

12V50DF

9L50DF

8L50DF

6L50DF50DF

20DF

9L20DF

8L20DF

6L20DF 1.0 MW

© Wärtsilä 14 June 201115

Solution for LNG powered vessels

C. Dual-Fuel Main engine

A. Storage tanks

B. Evaporators

LNGPac: a complete and modularized

solution for LNG fuelled ships

C B

A

D. Dual-Fuel Aux engines

D

E. Bunkering station(s)

F. Integrated control system

E

F

• Cylindrical pressure vessel

• Vacuum insulated

• Approved for passenger vessels

© Wärtsilä

TODAY

2 x W6L46B, 5850 kW each

First conversion contract – sailing on LNG Sept. 2011

14 June 201116

Conversion engineering, integration and delivery of equipment by Wärtsilä

TOmorrow

2 x W6L50DF, 5700 kW each

L N G

LNGPac

2 x 500 m3

CPP PTO

GVU

MV BIT VIKINGVessel 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

Ice Class FS Ice Class 1A

© Wärtsilä

DUAL-FUEL low-speed engine

14 June 201117

• Feb 16, 2011 development announcement

of a 2s DF engine program

• >40 years of experience in marine gas

engine application, low- and medium speed

• Test engine 6RT-flex50 in Trieste,

start up in June 2011

• Pilot installation expected at sea in 2014

© Wärtsilä

Gas engine history within SULZER

14 June 201118

Several projects in the past:

• 1965-’72: low pressure loop scavenged engines tested, 7RNMD90

finally installed in 29‟400m3 LNG-carrier “MV Venator”

Length oa 181.6 m

Breadth 29.0 m

Depth 16.5 m

Service speed 20 kn

Building Yard Moss Verft A/S, Hull 176

7RNMD90 15„000 kW / 122 rpm

Builder Sulzer Winterthur

© Wärtsilä 14 June 201119

Thank you for interest and attention