SCRUBBERS FOR THE BALTIC SEA AREA SHIPS FUEL AND TECHNOLOGY TOOLBOX SEMINAR

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1 SCRUBBERS FOR THE BALTIC SEA AREA SHIPS FUEL AND TECHNOLOGY TOOLBOX SEMINAR 18TH NOVEMBER 2011 IN HELSINKI B-M Kullas-Nyman, Kullas-Nyman Wärtsilä 1 / 45 Wärtsilä 8 November 2011 Doc.ID: DBAB Revision: j Status: Finalised

2 IMO SO x Emission Control Areas Geographically defined SO x Emission Control Areas (SECA) where ships must limit their emissions.* The SECA is expected to expand outside Europe. North Sea Baltic Sea English Channel * As of February / 45 Wärtsilä 8 November 2011

3 Wärtsilä freshwater scrubber test unit (MT Suula) Closed-loop, fresh water scrubber The very first certified scrubber Compliance with Marpol and certified by DNV, GL and BV 3 / 45 Wärtsilä 8 November 2011

4 Wärtsilä freshwater scrubber test unit (MT Suula) Exhaust gas out Water spray Packed bed Water + NaOH Exhaust gas in Water + Sulphates Packed bed spray scrubber 4 / 45 Wärtsilä 8 November 2011

5 Freshwater scrubber layout ~25 m 3 /MWh Freshwater ~ 0.1 m 3 /MWh Bleed-off ~ 0.1 m 3 /MWh Sludge ~ kg/mwh Effluent ~ 0.1 m 3 /MWh 5 / 45 Wärtsilä 8 November 2011

6 Alkalinity in the Baltic Sea Finland Open sea alkalinity Surface data (0 15 m) Data from Sweden Typical open sea alcalinity outside id B Baltic li S Sea iis ca µmol/l 6 / 45 Wärtsilä 8 November 2011 Doc.ID: DBAB Revision: j Status: Finalised

7 SO 2 reduction versus water ph SO 2 reduction Alkalinity reflects the 100% ability to react with acids and neutralise them. Alkaline power reduces as neutralisation takes effect. 50% Alkalinity and hence, scrubber efficiency is controlled by: 0% ph 14 adjusting flow in sea water scrubbers, or adjusting NaOH quantity in fresh water scrubbers 7 / 45 Wärtsilä 8 November 2011

8 Typical Wärtsilä scrubber performance and operation data Performance SO x reduction > 97% Operation Installation example: 10 MW, 85% MCR 3.5% S, scrubbing to 0.1 % level ISO conditions Fuel Power consumption Up to 3.5% S content 0.5% of actual Power NaOH price $/m 3 NaOH consumption Approx. 130 litres /h (~7% of SFOC) Dimensions / Weight in operation Fresh water consumption Effluent* sea discharge Sea water (cooling) 6m Ø 3.4m / 10 tons Approx. 1 m 3 / h Approx. < 1 m 3 / h Approx. 100 m 3 / h * Cleaned bleed-off extracted from scrubbing water to remove contaminants 8 / 45 Wärtsilä 8 November 2011

9 MT Suula results Item Value SO x reduction > 99% NO x reduction 5-11 % PM reduction % Effluent ph 7.77 (IMO: 6.5) Effluent PAH content Effluent turbidity 10 μg/l (IMO: 1226 μg/l) 0.40 FNU (IMO: 25 FNU) Effluent Nitratet content t 9 mg/l (IMO: 60 mg/l) 9 / 45 Wärtsilä 8 November 2011

10 Public Test Report available Project background Legislation review Emission results Effluent results Sludge results And much more 10 / 45 Wärtsilä 8 November 2011

Bleed-off treatment Bleed-off Effluent Cleaned bleed-off

buffer tank possibility to operate in zero discharge mode

is not operating Scrubbing water circulation Effluent

extracted to bleed-off unit to remove contaminants

permits: Operation of scrubber with bleed-off treatment

never overboard Storage: In ship s sludge tank, possibly

11 Bleed-off treatment Bleed-off Effluent Cleaned bleed-off Disposal: At open sea discharged overboard Storage: In a buffer tank possibility to operate in zero discharge mode Permits cleaning of bleed-off anytime, also when scrubber is not operating Scrubbing water circulation Effluent Bleed-off Sludge Sludge Small amount of scrubbing water extracted to bleed-off unit to remove contaminants Disposal: Never overboard Storage: In a buffer tank which permits: Operation of scrubber with bleed-off treatment unit out of operation Also vice versa Disposal: In port, never overboard Storage: In ship s sludge tank, possibly in the existing tank with separator and other sludge 11 / 45 Wärtsilä 8 November 2011

12 Wärtsilä FWS options Main stream scrubber One scrubber unit for each engine Not suitable for fuel oil fired boilers Integrated scrubber One scrubber unit for several engines and/or oil fired boilers Suitable for fuel oil fired boilers 12 / 45 Wärtsilä 8 November 2011 Doc.ID: DBAB Revision: j Status: Finalised

Wärtsilä Integrated Scrubber Benefits Completely l avoids increased exhaust

unit with suction fans for all combustion units onboard Suction branches with

embedded Constant under-pressure prevents undue flow of gases Integrated

13 Wärtsilä Integrated Scrubber Benefits Completely l avoids increased exhaust gas back pressure Minimizes the amount of equipment 5 Main features One common unit with suction fans for all combustion units onboard Suction branches with shut-off valves from all exhaust gas and flue gas pipes Fan redundancy embedded Constant under-pressure prevents undue flow of gases Integrated scrubber Silencers Exhaust gas boilers Engines Oil-fired boiler 13 / 45 Wärtsilä 8 November 2011

References A full commercial project Containerships VII, scrubber delivery in August 2011 Main stream scrubber for Wärtsilä 7L64 main engine, 12600kW

14 References A full commercial project Containerships VII, scrubber delivery in August 2011 Main stream scrubber for Wärtsilä 7L64 main engine, 12600kW Vessel built in 2002 (Sietas, Hamburg). Operating area Baltic Sea and North Sea Finnish flag, classification society GL 14 / 45 Wärtsilä 8 November 2011

15 Containerships VII A full commercial project Turn-key delivery: Equipment Installation, piping, cabling Interfaces to existing systems Commissioning Performance guarantee Class approval Certification Documentation Customer training 15 / 45 Wärtsilä 8 November 2011

16 Containerships VII 16 / 45 Wärtsilä 8 November 2011

17 Containerships VII scrubber installed Completion of commissioning: end / 45 Wärtsilä 8 November 2011

18 18 / 45 Wärtsilä 8 November 2011

19 19 / 45 Wärtsilä 8 November 2011

WÄRTSILÄ PROVIDER OF ENVIRONMENTAL SOLUTIONS

WÄRTSILÄ PROVIDER OF ENVIRONMENTAL SOLUTIONS ASLAK SUOPANKI, WÄRTSILÄ FINLAND, ENVIRONMENTAL SERVICES SUSTAINABLE SHIPPING FORUM 2010, MIAMI 1 / 24 Wärtsilä 22 October 2010 Doc.ID: Revision: Status: Finalised