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2. ecology
3. pollution

MARINE
The complete solution for reducing NOx emissions
The maritime sector is a considerable contributor to global emissions of nitrogen oxides (NOX ). Together
with sulphur oxides (SOX ), NOX is the main cause of acid rain and the formation of smog (ground level
ozone), which increases the risk of asthma, allergies and lung diseases.
Stricter regulations by the International Maritime Organisation (IMO) in the 2008 Amendments to
MARPOL Annex VI, apply globally. A number of countries are pursuing emission reduction incentive
schemes. From 2016 all new ships sailing within an Emission Control Area (ECA) must reduce NOX
emissions to meet the strict Tier III requirements.
Approaching zero NOX
emissions
The Selective Catalytic Reduction
(SCR) is the only technology currently
available to fulfil the most strict NOx
requirements. NOxCare Marine is
based on SCR technology and is
applicable to all vessel types, both
new builds and retrofits, reducing NOX
emission by up to 99%.
NOxCare Marine uses NOxCare SCR
together with injected NOxCare 40,
a high purity urea water solution, to
reduce NOX. The system is installed
between the engine and the exhaust
outlet. The exhaust gas passes through
the catalyst where the NOX is converted
into harmless nitrogen and water.
Solution Benefits
Lower operational costs
NOxCare Marine is the only complete
product offer which covers all your NOX
reduction requirements worldwide
trough global availability of NOxCare
SCR, NOxCare 40 urea solution and
our global network of NOxCare Marine
service engineers.
NOxCare Marine offers a cost efficient
and effective alternative to meet the
IMO NOX regulations and to avoid local
environmental taxes. SCR is the only
technology that offers a positive
solution to the trade off between fuel
consumption and NOx reduction
and thus does not increase fuel
consumption, CO2 emissions and
particulates (soot). We offer training
to ensure optimal operational
performance onboard your vessel. Our
experts are available for assistance
to ensure that your system runs
smoothly. The result for you is optimal
performance and lower operational
costs.
The complete solution includes:
• SCR design and engineering
• production
• installation supervision
• training of personnel
• supply of NOxCare 40 urea solution
• spare parts
• after sales services
Our in-house R&D is continuously
improving our
technology to meet current and future
regulation requirements. We have
the specialised chemical and catalyst
material competence which is essential
to the SCR technology.
Treatment process - NOxCare 40 urea
The NOxCare 40 urea solution is sprayed into the exhaust gas upstream the catalyst
and vaporises inside the injection pipe, where it is
converted to ammonia. The ammonia mixes with the exhaust gas and reacts with
the NOX molecules on the catalyst surface to form harmless nitrogen gas (N2) and
water (H2O).
NOxCare 40 Marine is a high purity product
delivered with specification for use on maritime SCR systems. This ensures that the
product quality does not affect the operation of the catalyst systems.
NOxCare 40 is provided by Yara, the world’s largest urea producer with a global
delivery network, ensuring a reliable supply of high quality product worldwide. The
product is easy and safe to transport, store and handle, and is non-toxic.
With more than 1000 SCR systems
installed for ship engines world wide,
we are well grounded in long-standing
and sustainable
experiences in the field of the SCR systems for marine applications. Whether
ferries, seismic vessels, fishing trawlers,
supply vessels or yachts, we design and
deliver efficient and compact systems
for NOx reduction.
With our NOxCare SCR systems we can
guarantee compliance with the future
IMO requirements already today.
The complete solution for reducing NOx emissions
IMO World Map for ECA (Emission Control Areas)
For vessels, delivered to the owner
after 2016, the NOx emission must be
reduced by 80 % in this sensitive (ECA)
areas. This will be only possible with
an effective SCR System.
ECAs are currently (2010 ) the Baltic
Sea, the North Sea the English
Channel and furthermore the coasts
of North America. Some other areas
are still under discussion.
Existing ECA
U.S. ECA
Discussed ECA
Beside NOx also the SOx reduction
will be a serious target.
Implementation schedule according MARPOL 73/78 Annex VI
sulphur content (%)
4,5
4
General
3,5
3
2,5
2
1,5
in ECA´s
1
0,5
0
NOx (g/kWh)
Tier I
Tier II
in ECA´s
Tier III
20082010
2012
2014
2016
2018
2020 2022
IMO NOx Limit Curves
18
16
Tier I
12
10
8
Tier II (Global)
6
4
Tier III (NOx Emission Control Areas)
2
0
-
-
-
-
-
-
-
-
-
-
SCR
0
-
NOx Limit, g/kWh
14
200 400 600 800 1000 1200 14001600 1800 20002200
Rated Engine Speed, rpm
NOx Limit, g/kWh
_ 2000
n < 130
130 <_ n <
n>
2000
Tier
Date
Tier I
2000
17.0
45 · n-0.2
9.8
Tier II
2011
14.4
44 · n-0.23
7.7
Tier III
2016*
3.4
* In NOx Emission Control Areas (Tier II standards apply outside ECAs).
9·n
-0.2
1.96
The complete solution for reducing NOx emissions
silencer
10
9
4
3
Boiler
2
SCR - Reactor
PLC
two phase nozzle
Dosing unit
6
1
The NOxCare SCR DeNOx systems
are specially designed for the individual
customer needs and to meet accurately
the technical rules and shipping
requirements.
Whether ship new building or retrofit
of existing ships, whether ferry or
cruiser, whether drill-ship or tanker,
the NOxCare systems will meet the
requirements of the local regulations
with reliability and offer you a cost
advantage.
5
Urea tank
1
2
3
4
5
6
7
8
9
10
Pump station
7 8compressor
Diesel engine
SCR reactor
Boiler
Silencer
Urea tank
Dosing unit
Urea pump skid
Compressor (working air)
NOX Analyser
PLC Control cabinet
Main Components (high reliability)
1
5
2
1
atalysts element frames
C
The choice of the most effective type
of SCR catalyst is our daily work.
Our target is to achieve the highest
possible NOx reduction efficiency
with an optimized catalyst volume
and type. The SCR catalyst layers are
made of ceramic monoliths (blocks)
packed into compact modules and
installed inside the catalyst housing.
The monoliths are made of a full
active ceramic mass and the main
compounds are titanium dioxide and
vanadium pentoxide.
2
Dosing unit
To ensure maximum availability of
the Urea injection, it is necessary
to use a special metering system
with safety devices, for integration
into the SCR control system. This
accurate dosing of urea solution to
the nozzle ensures the right efficiency
of the NOx reduction system at
all times. For each injection nozzle
a dosing panel is needed. Over
20 years of experience with urea
dosing systems are reflected in these
components of H+H.
3
Distribution panel
This equipment is used for pressure
regulation (4...8 bar overpressure)
and distribution of urea to the
different dosing units. It is not used
in single engine systems.
4
Pump station
Equipment for continuous supply of
urea solution to all dosing panels
and for a constant pressure of urea
solution up to 6 – 7 bars.
5
NOx-Analyzer
This device is needed for the “closed
loop” control of the SCR System.
It measures the NOx concentration
downstream the SCR catalyst.Each
engine with operational SCR system
will be monitored for 15 minutes (this
time is adjustable by the SCR control
cabinet). The choice which engine
will be measured is an automatic
process also controlled by the SCR
control cabinet. This equipment is an
option.
3
4
The complete solution for reducing NOx emissions
Main Figures
NOx Reduction: 90 – 98 %
HC Reduction:
80 – 90 %
Soot Particle Reduction: 20 – 30 %
Sound Reduction: 20 – 35 dB(A)
Operation:Temperature range 280°C–510°C
(depending on fuel quality)
Specific Costs*:Invest Costs = 30 – 50 € / kW engine power
Running Costs = 4 – 5 € / MWh engine power
Commisioning & Services
Our aim is to achieve a reliable long term – cooperation with
our customers, therefore trust and assistance are two of the
basic elements of our company philosophy.
Our well-trained qualified personnel who are familiar with SCR
systems for many years are available for plant service and
maintenance.
Customer References
Technical Office
Yara Environmental Technologies
GmbH (in formation),
Industriestraße 3-5
D-55595 Hargesheim
Germany
Phone: +49 671 92064-0
Fax: +49 671 92064-20
noxcare@yara.com
Sales Office
Yara Environmental Technologies
GmbH (in formation),
Büro Sonnefeld,
Herrngasse 2,
96242 Sonnefeld,
Germany
Tel: +49 9562 40420 0
Fax: +49 9562 40420 20
noxcare@yara.com
www.noxcare.com