Annex VI of MARPOL 73/78 Regulations for the Prevention of Air Pollution from Ships.NOx Technical Code
MAN B&W Diesel
© MAN B&W Diesel
Regulations for the Prevention of Air Pollution from Ships.
(4100/PHP)
Regulations for the Prevention
Reduce NOx and SOx emissions from engines
NOx Technical Code
Ratified by 39 countries
MAN B&W Diesel
© MAN B&W Diesel
Ratified by 39 countries
MAN B&W Diesel
© MAN B&W Diesel
Regulations for the Prevention of Air Pollution from Ships.
(4100/PHP)
NOx and SOx regulation went into force May 19th 2005
NOx
Only for ships with keel laying after January 1st 2000
Engine power >130kW
Max. Sulphur content in fuel 4.5 %
HFO sulphur content will be reduced to max. 1.5% in restricted areas SECA
Baltic Sea: From May 19th 2006
North Sea: 21 Nov. 2007,(11 Aug EU)
English Channel 2007?? )
17
16.9990183739
16.7489237964
16.5193997213
16.3075424327
16.1110086009
15.9278813819
15.7565740052
15.595758971
14.3809727327
Sheet1
Sheet1
&L&"Arial,Bold"&18MAN B&&W Diesel A/S&R&"Arial,Bold"&18Bryansk Engineering Works
&C &R&6R&&D Dept. 2341/PHP
IMO Limit
&L&"Arial,Bold"&18MAN B&&W Diesel A/S
&R&6R&&D Dept. 2431/PHP
Rated engine speed (RPM)
&LMAN B&&W Diesel A/S&CPage &P&R&D
IMO kurve
L27/38
MAN B&W Diesel
© MAN B&W Diesel
for the MC Engines
NOx (Nitrogen Oxides NO, NO2)
SOx (Sulphur Oxides)
PM (Particulate matter)
CO (Carbon MonoOxide)
HC (Hydro Carbons)
CO2 (Carbon Dioxide)
L/74174-8.0/0502 (2430/NK)
Brugt til Paper. Figur No. 6.22
MAN B&W Diesel
© MAN B&W Diesel
Slide-Valve Design
MAN B&W Diesel
© MAN B&W Diesel
Will these vessels ever have to comply to IMO Annex 6, NOx regulation?
MAN B&W Diesel
© MAN B&W Diesel
IMO Certification ensures compliance:
when taken into service (sea trial)
in service
Classification societies handle the certification on behalf of the Flag States
DOK/2431 January 2005
Regulations for the Prevention of Air Pollution from Ships.
(4100/PHP)
3 steps for new engines (2000-)
Step 1: Compliance on testbed (Approved EIAPP certificate and Technical File)
Both for parent and member engines
Step 2: Compliance at seatrial (Approved IAPP certificate )
Step 3: Periodicly compliance test. (Renewal of certificates)
Pre 2000 engines: Special regulation
MAN B&W Diesel
© MAN B&W Diesel
Marking of components in accordance with MAN B&W Diesel Specifications
Performance testing of all engines to verify compliance with IMO Annex VI, and emission testing of the Parent engines on test bed
Preparing the TF and applying for the EIAPP certificate
Ensuring continuous compliance when engines are installed in the vessel*
*) Provided that the Owner maintains and operates the engine according to MAN B&W Diesel instructions
Licensee’s responsibilities
MAN B&W Diesel
© MAN B&W Diesel
New type emission analyser
IMO Annex VI of Marpol 73/78 Unified technical file (UTF)
(4100/PHP)
Advantages:
Remarks:
Some engine builders have in the past used a component setting tolerance method instead of engine performance. If the operator adjust the engine, the engine might be out of compliance using this method.
The ship owner should check the supplied TF for Component ID numbers. If the UTF is not followed – it will be much more difficult for the owners to purchase spare parts in the future and still be in compliance with Annex VI
We suggest that all owners check the TF and contact MAN B&W Diesel to clarify any problems.
MAN B&W Diesel
© MAN B&W Diesel
‘parameter check method’ (inspection of components and evaluation of performance)
OR
On-Board Survey Methods
Regulations for the Prevention of Air Pollution from Ships.
(4100/PHP)
MAN B&W Diesel’s Unified Technical File
MAN B&W Diesel
© MAN B&W Diesel
Philosophy:
It is not necessary to measure the NOx level for a pre-certified engine in order to demonstrate compliance for with the NOx emission level
Check of settings, components and operating values can provide an easy means of deducing the emissions performance of the engine
Parameter check method
shows that an engine complies with the NOx limit
MAN B&W
Parameter Check Method
Technical File defines:
References and tolerances for Performance values
1
Components check
Alpha IMO ID
On board performance check
%
 
g/kWh
13.35
15.37
15.53
14.41
14.75
g/kWh
14.45
16.41
16.56
15.41
15.80
Regulations for the Prevention of Air Pollution from Ships.
(4100/PHP)
Quoted from
DNV (Det Norske Veritas) guidelines for ship owners, managers, and DNV surveyors
MAN B&W Diesel
© MAN B&W Diesel
The Technical File must be available
Standard performance data must be recent i.e. within 30 days from a scheduled survey
Measuring equipment must be calibrated according to specifications in IMO NOx technical Code
A ‘record book’ describing changes in NOx components and settings must be kept
Only NOx components with proper marking are allowed
Requirements for On-Board Surveys
Regulations for the Prevention of Air Pollution from Ships.
(4100/PHP)
Quoted from
DNV (Det Norske Veritas) guidelines for ship owners, managers, and DNV surveyors
MAN B&W Diesel
© MAN B&W Diesel
MAN B&W On-Board
Inspect Technical File and Record Book
Perform standard MAN B&W Performance Check (must be taken within last 30 days) *)
Verify compliance using the Survey Code
Check fuel nozzle (& ECS version) **)
Add output from survey code to Record Book
*) 75% load for ME engines and MC(-C) engines w/o VIT and
75% load and a load point above the VIT breakpoint for MC(-C) engines with VIT
**) Check other NOx components and settings as considered necessary
MAN B&W Diesel
© MAN B&W Diesel
Components check
Alpha IMO ID
On board performance check
%
 
g/kWh
13.35
15.37
15.53
14.41
14.75
g/kWh
14.45
16.41
16.56
15.41
15.80
MBD will issue amendments to the existing
Technical File
New Technical File to be issued
Issuance of amendments due to design changes or drawing revisions is MBD responsibility
Revision of NOx components
Technical Code do not mention reconconditioning directly
Engine parts can be reconditioned as usual by authorised repair shops using original MAN B&W Diesel drawings
Dimensions as for original new part.
IMO ID re-established according to MAN B&W Diesel standard marking procedure
MAN B&W Diesel
© MAN B&W Diesel
Regulations for the Prevention of Air Pollution from Ships.
(4100/PHP)
The engine is replaced by an engine built after 2000
Or
Or
MAN B&W Diesel
© MAN B&W Diesel
Regulations for the Prevention of Air Pollution from Ships.
(4100/PHP)
existing emission characteristics established by the
simplified measurement method described.
Please note that if the NOx emission is increased by installing
slide fuel valves in vessels constructed before Jan. 1st 2000,
the modification is to be considered a substantial modification
(Technical Code 1.3.2.2), and therefore the IMO rules for NOx applies.
MAN B&W Diesel can assist you in obtaining the required documentation.
To do so, it is necessary to carry out a NOx measurement on board
before and after the modification.
If you wish to have these measurement done, please contact our technical Service department.
MAN B&W Diesel
© MAN B&W Diesel
Regulations for the Prevention of Air Pollution from Ships.
(4100/PHP)
Regulations for the Prevention of Air Pollution from Ships.
(4100/PHP)
Unified Technical File, EIAPP, performance check and RECORD BOOK
Old Engines: If modification reduces NOx:
Component guarentee statement.
Technical file as for a new engine.
MAN B&W Diesel
© MAN B&W Diesel
Engines not in compliance?
Port State Control
IMO Annex 6, reg.13 NOx
Since both vessels are only used in internal waters of the flagstate:
EIAPP and Technical File are NOT needed
Technical file (TF) and EIAPP required ?
Small Vessel on slide Less than 400 Gross tonnes, NO IAPP
Large Vessel on slide More than 400 Gross tonnes, IAPP Yes
Build before Jan 1st 2000
Build before Jan 1st 2000
Engine power
Engine modified
TF and EIAPP if NOx emission is increased Back 2 back measurements required
MAN B&W Diesel
© MAN B&W Diesel
MAN B&W Diesel
© MAN B&W Diesel
Conclusion on Emission Control
and will be even more so in the future
Primary methods are significantly more
cost-effective than secondary methods
Primary methods (Engine produces less NOx)
1) Engine adjustments
EGR (Exhaust Gas Recirculation)
SCR (Selective Catalytic Reduction NOx)
EPS (Electrostatic Precipitator, PM)
L/74219-4.0/0502 (2430/NK)
Combustion temperatures must be higher than 2100-2200 K.
O2 (O) and N2 (N) must be present
NOx concentration increases exponentially with temperature
L/74330-6.0/0502 (2430/NK)
NOx
CO
HC
PM
-
-


4 Large motors for
gas receiver
Comments – Water Emulsification
The effect of water emulsion on NOx is known (a rough guideline gives 1% NOx reduction per 1% water content)
A ’standard’ FIE (pump-valve-nozzle) system is used for on-off operation
A size optimized FIE present the best sfoc & emissions trade-off
Fuel-oil consumption penalty – roughly 1-2% per 10% NOx reduction
May increase HC and smoke (PM)
Requirement for fresh water supply and a number of fuel-system changes to be considered (fx higher heating & fuel-line pressure capacity for viscosity control)
The control system/governor needs to be designed for safe operation in case of emergencies/failures
Running on DO requires additive for stabilizing the emulsion
Water emulsion (FWE) has not yet been long term tested on the ME engine
MAN B&W Diesel
© MAN B&W Diesel
From MC-C to ME-C –
ME-C versus MC-C
ME-C versus MC-C
ME-C versus MC-C
Injection Profiles and Their Impact on SFOC and NOx Emissions
L/74166-5.0/0402 (2430/NK)
Fuel flow
MAN B&W Diesel
© MAN B&W Diesel
MAN B&W Diesel
© MAN B&W Diesel
MAN B&W Diesel
© MAN B&W Diesel
at Various EGR Ratios
MAN B&W Diesel
© MAN B&W Diesel
EGR
unit
Low combustion temperatures give low NOx
EGR influence on NOx formation
Hot exhaust
gas inlet
L/74334-3.0/0502 (2430/NK)
L/74222-8.0/0502 (2430/NK)
HAM
unit
High heat capacity and low O2 in scavenge air give low combustion temperatures
Humidfication of scavenge air increases heat capacity and lower the O2 content
Low combustion
SW drain
MAN B&W Diesel
© MAN B&W Diesel
at zero, half and full HAM
L/74170-0.0/0502 (2430/NK)
115
110
100
95
95
100
90
300
250
200
150
100
50
100
90
80
70
60
50
MAN B&W Diesel
© MAN B&W Diesel
Freshwater
Seawater
Circulating water
MAN B&W Diesel
© MAN B&W Diesel
Plant efficiency: Good potential for CO2 reduction
MAN B&W Diesel
© MAN B&W Diesel
and service electrical consumption of 7530 kW
86
88
90
92
94
96
98
100
102
100
85
70
60
3332029/20041123 (3230/JH)
3334437.2006.09.18 (3230/JH)
Emission limits:
MAN B&W Diesel
© MAN B&W Diesel
Emission control is/will be a key issue for engine applications
MAN B&W Diesel is, as illustrated,
prepared for future requirements
development
Diesel Engines
160
165
170
175
180
185
190
195
200
205
210
215
220
0
100
200
300
400
500
600
700
800
900
1,000
ME-C
MC-C
15/02/2003
160
170
180
190
200
210
220
230
240
250
260
270
0
10
20
30
40
50
60
70
ME-C
MC-C
15/02/2003
0
30
60
90
120
150
180
210
240
270
300
330
360
0
20
40
60
80
100
120
140
160
ME-C
MC-C
17/02/2003
MAN B&W Diesel A/S 2003-02-14 14:30
165
170
175
180
185
190
195
200
205
210
215
0
100
200
300
400
500
600
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800
900
Classic
Barbados France Netherlands Slovenia
Belgium Germany Norway Spain
Benin Greece Panama Sweden
Bulgaria Italy Poland Tuvalu
Croatia Latvia Romania Vanuatu
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