WÄRTSILÄ EXHAUST GAS CLEANING SYSTEM Stian Aakre General Manager R&D 1 © Wärtsilä
Welcome message from author
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
WÄRTSILÄ EXHAUST GAS CLEANING SYSTEM
Stian AakreGeneral Manager R&D
1 © Wärtsilä
BPO Environmental Seminar 5 th Mach 2014
• Wärtsilä scrubber system technology options
• Types and amounts of waste
2 © Wärtsilä This document is the property of Wärtsilä Corporation and shall not be copied or reproduced without the consent of the owner.
Wärtsilä scrubber system technology options
• Wet scrubbers
• Open loop• Closed loop• Sea water• Fresh water
3 © Wärtsilä This document is the property of Wärtsilä Corporation and shall not be copied or reproduced without the consent of the owner.
Wärtsilä scrubber system technology options
Engine Exhaust Chemistry:S + O2 → SO2 (~95%)
SO2 + 1/2 O2 → SO3 (~5%)
Scrubber Chemistry:SO2 + H2O → H2SO3 (Sulphurous Acid)SO3 + H2O → H2SO4 (Sulphuric Acid)
Seawater Reactions:CaCO3 + H2SO3 → CaSO3 + H2O + CO2
2CaSO3 + O2 → 2CaSO4
4 © Wärtsilä This document is the property of Wärtsilä Corporation and shall not be copied or reproduced without the consent of the owner.
Doc.ID: Revision: Status:19/ © Wärtsilä
Wärtsilä scrubber system technology options
• Global merchant fleet annual HFO consumption: 300,000,000 tons• Average HFO sulphur content: 2.7%• Average world ocean sulphate concentration: 2700 ppm• Entire world merchant fleet scrub continuously for 150 years
• Resulting world ocean sulphate concentration ???
• 2701 ppm…
5
6 © Wärtsilä This document is the property of Wärtsilä Corporation and shall not be copied or reproduced without the consent of the owner.
7 © Wärtsilä This document is the property of Wärtsilä Corporation and shall not be copied or reproduced without the consent of the owner.
8 © Wärtsilä This document is the property of Wärtsilä Corporation and shall not be copied or reproduced without the consent of the owner.
Scrubber technology – Type III (pat.)
9 © Wärtsilä This document is the property of Wärtsilä Corporation and shall not be copied or reproduced without the consent of the owner.
Scrubber technology
December 2012 Wärtsilä Hamworthy Scrubber / Stian Aakre10
Owner: • Wilh. Wilhelmsen ASA
Vessel: • MV Tarago
EGC System: • Retrofit during dry-dock• Operate Europe, America and Asia• 1 x 25 MW 3 inlet scrubber for ME and AE• 1 x 6MW 1 inlet scrubber for AE in port• Hybrid system
Ship in dock: Q2 2013
Performance :• Cleaning 3,5%S fuel down to 0,1,%S
10 © Wärtsilä This document is the property of Wärtsilä Corporation and shall not be copied or reproduced without the consent of the owner.
Scrubbing system - Hybrid
December 201213 Wärtsilä Hamworthy Scrubber / Stian Aakre
Types and amounts of waste
14 © Wärtsilä This document is the property of Wärtsilä Corporation and shall not be copied or reproduced without the consent of the owner.
Reductions in: SOx, NOx, PM
Wash water (sulphates)pH, PAH, turbidity and temperature
Sludge
Sludge producing units / water treatment plants
• Chemical/DAF-treatment systems
• Centrifugal separators
• Filtration ceramic/membranes
• Bioreactors
• Hydro cyclones/multi cyclones (open loop)
1
Sludge properties
• Pumpable (water content 75-90%)
• Non flammable (caloric value <0.2 MJ/kg)
• Naturally high on sodium (Na) and Sulphur (S)
• Could be high on metals like nickel (Ni) and vanadium (Va) chrome (Cr) from the fuel / lube oil / engine wear
16
Doc.ID: Revision: Status:19/ © Wärtsilä
Doc.ID: Revision: Status:19/ © Wärtsilä
Thank You!
Related Documents
