retrofitting scrubber and lng technologies to … prizas 2012/marchain workshop 2012_2.pdf–...

Finalised-DBAB205397Doc.ID: Revision: Status:29/ © Wärtsilä

RETROFITTING SCRUBBER AND LNGTECHNOLOGIES TO EXISTING SHIPS

PASI PAJULA, WÄRTSILÄ FINLAND -ENVIRONMENTAL SOLUTIONSMARCHAIN GREEN PROPULSION WORKSHOP 2012, KLAIPEDA,

LITHUANIA

13 december 2012 / Marchain workshop Pasi Pajula

Wärtsilä Environmental SolutionsA new organization part of Ship Power

Ballast WaterManagement SystemsJoe Thomas, Director

Exhaust Gas CleaningSigurd Jenssen,

Director

RetrofitLeonardo Sonzio,

Director

Water and Inert GasSystems

Geir Hellum, Director

Three product Business Units:

• R&D and technical management• Manufacturing operations• Product sales to new builds• Product delivery management (PM / sales order processing)• After sales

Project Business Unit:

• Project sales• FEED• Project management• Project engineering

Environmental SolutionsJuha Kytöla, VP

Wärtsilä and Hamworthy combined unique strengths


Finalised-DBAB205397Doc.ID: Revision: Status:29 © Wärtsilä/

As of February 2006, IMO SOx Emission Control Areas (SECA) where ships must limit their emissions includes Baltic Sea, North Sea and English Channel: 1% max in 2010 and 0,1% from 2015. Since 2010, EC set a cap of 0,1% sulfur in all EU ports.

USA, Hawaii and CanadaIn March 2009, a proposal was submitted to IMO for a SOx and NOxEmission Control Area.Accepted in March 2010, and it will come effective in August 2012.

• 200 miles from coast.• Fuel Sulphur initially limited to 1%,

then 0.1% from 2015, all ships. • NOX Tier III (Tier I minus 80 %)

in 2016, for all new buildings.

Other ECA currently being discussed:Coasts of Mexico, Coasts of Alaska and Great Lakes, Singapore, Hong Kong, Korea, Australia, Black Sea, Mediterranean Sea (2014), Tokyo Bay (in 2015)

Emission Controlled Areas


Finalised-DBAB205397Doc.ID: Revision: Status:29 © Wärtsilä/

Reduce emissions - What are the options?

Back in the day’sHFO or MDO

Today and in the futureWhat to select?

… and in the end it all boils down to CAPEX-OPEX

MDONOx Tier 3

compliant engine+ Low sulphur fuel

HFOAftertreatment

ScrubbersSCR

GASGas as fuel


Environmental solutions - Exhaust gascleaning products for marine use

Sox emissions ->Wet scrubbers (Open loop, closed loop and hybrid)

Nox emissions -> SCR/NOR catalysators

DF engines


Closed loop scrubber

Closed loop with NaOH

Effluentmonitoring

Alkali feedmodule

Bleed-offtreatment units

Alkali (NaOH) tank, 14 days

autonomy

Sea water heatexchanger

Sea water pump

Scrubber unit

By-pass valves

Emission monitoring

Exhaust gas fan module

Sludge tank

Scrubbing waterpump module

Holding tank(optional)

Freshwater in


Open loop scrubber Engine Exhaust

Gas

Scrubbed Exhaust Gas

Possible plume control

Laser Gas Analyser

HMI Control Cabinet

Water Monitoring

Scrubber Supply pump In port reaction

water pump

Sludge Tank

De-aeration vessel

Optional Return pump Water treatment

Water monitoring

Wash water discharge

Sea waterSea water from scrubberSludgeControl data

Scrubber unit


Alkalinity in the Baltic Sea

• Open sea alkalinity• Surface data (0… 15 m)• Data from 2001-2005

• Typical open sea alcalinity outside Baltic Sea is ca. 2200 – 2400 µmol/L

Sweden

Finland


Scrubber system layout design, closed loop & hybrid


Scrubber system layout design, open loop


CONTAINERSHIPS 7 EGC RETROFITTurn – key reference

• Customer and background– Containerships (Finland)– First Closed Loop commercial project

• Scope of supply– Wärtsilä Closed Loop Scrubber– CEMS*

• “Turn – key” project responsibility– Engineering, procurement, construction– Complete installation: scrubber room prefabrication and installation, equipment container prefabrication and installation, relocation of equipment, piping work, electrical and automation integration, etc…

• Modification to water treatment ongoing (root cause identified, modification tested for 1500 hrs with successful results, final modifications ongoing)

* CEMS = Continous Emission Monitoring System


Containerships VII Scrubber tower lifted onboard

Installed Completion of commissioning: End of 2011

Scrubber system design, general issues to check

Scrubber system selection -> Operating area of the ship

System design, Fuel consumption and dividence between main-/auxiliary engines

Physical constraints for scrubber unit placement

Eg. In case funnel extension -> sightlines from the bridge, navigation light masts, satellite connections, gps, radar…

Physical constraints for scrubber system equipment placement

Tank sizing (desired autonomy) vs. tank availability.

Vessel stability (eg. RoRo´s)

Power reserve (power production and main switchboard spare fuses)

Weight and windsurface area increase effect to vessel equipment no.

Ex-and specific firezones, component placement, penetrations eg, with cables or pipes

Flag administration work safety requirements

Classification society requirements , Additional notations effect

Ie. Comfort class, clean design.13 december 2012 / Marchain workshop Pasi Pajula

TARBIT LNG CONVERSIONTurn – key reference

• Customer and background– Tarbit– Chemical Tanker (Bit Viking)– First LNG conversion ever done– First LNGPac and GVU delivery– 75% of project funded by the Norwegian NOx fund

• Scope of supply– DF conversion of 2xW6L46– Complete LNG system (tanks, piping, gas valve units, inerting system)– Automation upgrade– Fire fighting system upgrade

• “Turn – key” project responsibility– Engineering, procurement, construction– Complete installation: engine conversions, reinforcement of deck, tank installation, piping work, electrical and automation integration, etc…

• Ship successfully sailing since summer 2011


Bit Viking conversion

Bunker stations

LNG tanks

Tank room and aux room


Bit Viking conversion• Pipes• Supports• Insulation• Foundation steelwork• Access gangways• Cabling


Lifting operation at yard• Rented Floating crane as yard

lifting capacity restricted• Weight of empty tank: 220 ton

• 2,3 times the weight of 6L50DF


LNG conversion design, general issues to check

Engine convertibility vs. new engines

Physical constraints for placement of LNG storage tanks vs. desired autonomy

Hull structures below LNG tanks

Pipe routing (double wall piping)

Placement for GVU and other components

Exhaust gas lines –> Rupture disc arrangement

Vessel stability

Weight increase impact on equipment number of the vessel.

Ex-and specific firezones, component placement, penetrations eg, with cables or pipes

Flag administration work safety requirements

Classification society requirements


retrofitting scrubber and lng technologies to … prizas 2012/marchain workshop 2012_2.pdf–...

Documents