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WWW.AALBORG-INDUSTRIES.COM PRESENTATION series | © AALBORG INDUSTRIES | JUL 2010 EXHAUST GAS CLEANING1
Exhaust Gas Cleaning
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Exhaust Gas CleaningOlav Knudsen, Head of R&D, Exhaust Gas Cleaning
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Technology history
~1000 Inert Gas Systems sold since 1972
~3000 Inert Gas Generators sold with scrubber section
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Tests with MAN Diesel in Holeby
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Test period Oct 2008 – Jan 2009
Tests mainly based on fresh water
1 MW MAN 4-stroke Engine
MCR @ 25/50/75/100%
SOx 99%
PM up to 80%
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Advantages Hybrid EGCsystem
Running on SW at open sea whenever possible
(lowest costs, ease of operation)
Zero discharge whenever required
(ports, estuaries, sensitive area’s)
Ability to cope with low alkalinity waters (Baltic, estuaries, rivers)
No switching between MGO/HFO -> maximum fuel savings
Compact water cleaning, lowest possible FW/NaOH consumption
Maximum flexibibility
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Technical data Tor Ficaria
Technical data
Year built 2006
Length 199,8 meters
Width 26,50 meters
Speed 22,5 knots
Cargo capacity 3,831 lane meters
MAN B&W type 9L60 MC-C (21MW)
Classification LRS
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EGC installed on Tor Ficaria
Technical data: In operation since May 2010
Height 10.5 Meters
Length 8.2 Meters
Diameter 4.6 Meters
Weight empty 24T
Weight with water 32T
Exhaust gas 192,000 Kg/h
Material SS alloys
PM Scrubbing Jet + venturi
Sea water pump 200KW/1000m3/h
Length
Diameter
He
igh
t
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DFDS Tor Ficaria- world largest scrubber on a vessel
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DFDS Tor FicariaFunnel - modification
Before During After
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DFDS Tor Ficaria- world largest scrubber on a vessel
WWW.AALBORG-INDUSTRIES.COM PRESENTATION series | © AALBORG INDUSTRIES | JUL 2010 EXHAUST GAS CLEANING11
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DFDS Tor Ficaria- world largest scrubber on a vessel
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Switching between SW and FW- Operation on FW in sensitive areas
SW
NaOH
Scrubber
Exhaust gas
No discharge water No Environmental Impact Assessment (IEA) to local EPA
Low engine power low NaOH consumption
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Switching between SW and FW- Operation on SW at open sea
SW
Scrubber
Exhaust gas
Slowly cleaning of the accumulated water at open sea only a relative small watercleaning unit is required.
Sludge for disposal at land
Brine
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Switching between SW and FW- Operation on SW at open sea
SW
Scrubber
Exhaust gas
No NaOH consumption
Slowly filling up the tank again to prepare it for arrival to a sensitive area Only arelative low FW flow is required.
FW supply
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Results Tor Ficaria- Summary
Sulfur emission after scrubber below the 0.1 % sulfur limitin 2015 with HFO
pH level of discharge water at 3 – 5 depending onexhaust gas and water flow
Below limit on dissolved oil in discharge water (PAH)
Below limit on soot particles in discharge water (Turbidity)
More than 1000 hours of operation
Valuable data for further optimization
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Conclusions
90 years of experience in the maritime industry
40 years of scrubbing experience from flue gasinstallations
Maximum cost savings and flexibility with hybrid EGCSystem
Far largest EGC system in continuous operation on TorFicaria - 21 MW MAN B&W
Short pay back time 1-2 years