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Transcript of © Wärtsilä A PRACTICAL GUIDE TO WARTSILA SCRUBBER SYSTEMS BIMCO 2 ND OF JUNE 2015 Stian Aakre A...
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1 © Wärtsilä
A PRACTICAL GUIDE TO WARTSILA SCRUBBER SYSTEMS
BIMCO 2ND OF JUNE 2015
Stian Aakre
A Practical Guide to Scrubber Systems/ Stian Aakre
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Marine Sulphur and Scrubber legislation
Presentation name / Author2
Body Act
IMO - SOx MARPOL Annex VI
IMO - Scrubbers Resolution MEPC.184(59)
EU 2012/33/EU
US EPA Vessel General Permit – VGP
California Air Resources Board - CARB
2015 2020 2025
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Wärtsilä Marine Scrubber Portfolio
Open loop scrubber – sea water operations
• Uses seawater i.e. no freshwater needs
• Slightly higher power demand than FWS
• Does not need caustic soda
• Applications: main alternative for ocean-going ships
Closed loop scrubber – fresh water/closed loop operations
• Independent on seawater alkalinity
• Zero effluent discharge an option
• Low power demand
• Needs caustic soda as a reagent
• Applications: seas with extremely low alkalinity and for operators looking for continuous closed loop operation
Hybrid scrubbers – open loop / closed loop operations
• Flexible system
• More complex system
• Applications: ships requiring full flexibility of operations
Presentation name / Author
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Meet IMO Tier III with Wärtsilä NOx Reducer
2015 Wärtsilä NOx Reducer
Easy, proven and safe add-on technology
Comply with NOx emission regulations - IMO Tier III, US-EPA, local requirements
Future-proof global operation
Allow flexible installation
Gain OPEX savings for engine + SCR integration
Comply with Wärtsilä Scrubbers and HFO up to 3,5% Sulphur
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Wärtsilä Marine Scrubber Portfolio
Presentation name / Author
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Open loop vs hybrid vs closed loop
Presentation name / Author6
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Open loop vs hybrid vs closed loop
Presentation name / Author7
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Inline vs conventional scrubber
Inline scrubber Conventional scrubber
Wash water amount 55 m3/MWh 45 m3/MWh
Max fuel S% content in open loop 2,5% 3,5%
PM removal No Up to 85%
Benefits inline scrubber:
• Smaller footprint and operational flexibility• The main stream configuration provides good redundancy• No by-pass and simple installation
Reference inline scrubber• First installation: Color Line Super Speed 2 in operation • Similar installations for 3 other Color Line vessels• 11 Inline scrubbers (hybrid) ordered for cruise vessels • 4 Inline scrubbers (closed loop) ordered for two RoRo vessel
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Sulphur oxides SOx in sea water (scrubbing process) forms sulphuric acid – low pH
Sea water alkalinityneutralizes the pH – rest “product” from scrubbing is sulphate
Sulphate is a natural substance in sea water - approximate amount: 2 700 mg/l
Sulphur in sea
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Water treatment and sludge
To be disposed of ashore
Estimated amount:Closed loop: 1,0 kg/MWh Open loop: 0,05 kg/MWh
The amount depends on silt content in water and engine running profile
All Wärtsilä scrubber systems have water treatment included as a default. The goal is to always follow current and future legislation, guaranteeing
compliance for our customer.
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Deplume
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Based upon our investigations we needed to find an EGC system with scrubbers that could be fitted into the existing engine casing ColorLine
ColorLine SuperSpeed II:
• Operates 100% within SECA
• 4 x 9,45MW Wärtsilä
• Space limitations in funnel
• Wärtsilä Inline Scrubber installation
March 2014 at FaYard
Case study: Superspeed II
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Case study: Superspeed IIFunnel with silencers
Replacing the silencers with Wärtsilä Inline scrubbers
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Wärtsilä – added value partnership
Summary
Technology choice to suit the ship type and operational profile
Turn-key supply capability
trusted partnership
survey and equipment selection
engineering and project management
procurement and equipment delivery
installation, commissioning and certification
through life technical, spares and service support
Credible supplier to the marine and offshore sector
Proven global support capability
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