NEXT GENERATION NOx REDUCTION

DIGITAL AIRLESS MULTIPOINT® SCR SYSTEMS FOR MARINE APPLICATIONS

Kristian T. Lund, Business Manager, Dansk Teknologi

Cleaner Shipping Conference Copenhagen November 29th 2010

Reduction of NOx Emissions from Shipping

NEXT GENERATION NOx REDUCTION

DIGITAL AIRLESS MULTIPOINT® SCR SYSTEMS FOR MARINE APPLICATIONS

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Shipping is the Source of 12% of Global NOx Emissions (≈ 21 million tons NOx/year*)

Nitrogen oxides (NOx)

Sulphur oxides

Carbon monoxide

Total hydrocarbons

Volatile organic compounds

Particulate matter

Component

1,000 -1,500 ppm

30 – 900 ppm

20 – 150 ppm

20 – 100 ppm

20 – 100 ppm

20 – 100 mg/Nm3

Range (Vol.) Component Range (Vol.)

*Source: German Advisory Council on Global Change (WGBU) + Journal of Geophysical Research, volume 110/2005 Dr. Veronika Eyring)

NOx is a large proportion of typical diesel engine exhaust gas components:

NEXT GENERATION NOx REDUCTION

DIGITAL AIRLESS MULTIPOINT® SCR SYSTEMS FOR MARINE APPLICATIONS

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NOx are Toxic Gasses and Stringent Emission Limits are in Place

NOx Damages our Environment and Causes Health Problems •  NO and NO2 are toxic gases •  NOx contributes to smog, acid rain and global

warming •  NOx causes human respiratory problems (e.g.

asthma)

Strict IMO Regulations •  Strict IMO 2016 regulation prescribe NOx limits

less than 2 g/kWh compared with 17 g/kWh in 2000

•  A number of countries e.g. Norway have separate NOx emission legislation in effect

•  NOx tax in Norway is 15 NOK/kg NOx

NEXT GENERATION NOx REDUCTION

DIGITAL AIRLESS MULTIPOINT® SCR SYSTEMS FOR MARINE APPLICATIONS

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SCR is the Most Effective Way to Reduce NOx and Comply with IMO Regulations

Basic internal engine modifications

Exhaust gas recirculation (4-stroke)

Direct water injection

Humid air motor

SCR (Selective Catalytic Reduction)

Component

- 20%

- 35%

- 50%

- 70%

- 95%

Range (Vol.) Technology NOx Reduction Potential

NOx can be reduced by a number of technologies:

NEXT GENERATION NOx REDUCTION

DIGITAL AIRLESS MULTIPOINT® SCR SYSTEMS FOR MARINE APPLICATIONS

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SCR Transforms Toxic NOx into Harmless Nitrogen

SCR Process - from Toxic NOx to Harmless Nitrogen 1.  Injection of urea solution

2.  Conversion of urea to ammonia, NH3

3.  Reduction of NOx with ammonia through SCR catalyst 4.  Output of harmless nitrogen, N2

Toxic NOx SCR Process Harmless Nitrogen

H20 O2

CO2 N2

Urea

SCR Catalyst NH3

NO O2

NO2 CO2

CO

1

2

3

4

1 2 3 4

Toxic NOx Harmless Nitrogen

NEXT GENERATION NOx REDUCTION

DIGITAL AIRLESS MULTIPOINT® SCR SYSTEMS FOR MARINE APPLICATIONS

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Main Components of a typical* SCR System

Temp. sensor NOx-sensor Urea Tank

Sootblowing system

SCR control unit

Marine diesel engine

Engine control unit

Digital dosing pump

Pressure sensor

Valves

Airless nozzles

Temp. sensor

NOx sensor

Sootblowing nozzles

Urea pipe

Pulsation damper

Typical SCR systems are air-assisted. DANSK TEKNOLOGI is the only manufacturer to deliver the patented airless SCR systems. Airless operation means no need for compressed air, no extra fuel consumption and a very compact system, which is ideal when space is limited.

*

NEXT GENERATION NOx REDUCTION

DIGITAL AIRLESS MULTIPOINT® SCR SYSTEMS FOR MARINE APPLICATIONS

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SCR Main Figures

Performance • NOx Reduction 90-98% •  Soot Reduction 20-40% •  Sound Attenuation 10-40 dB(A)

Operation •  Temperature Range 270 – 540 C •  Fuel MGO/MDO/HFO

Costs •  Investment Cost 40 – 60 € / kW

NEXT GENERATION NOx REDUCTION

DIGITAL AIRLESS MULTIPOINT® SCR SYSTEMS FOR MARINE APPLICATIONS

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Digital Airless Multipoint® SCR NOx Reduction Case: Royal Danish Navy Diana-class Patrol Vessels

Diana Class: 6 Patrol Vessels Engine Installation: 2 x MTU 2040 kW Fuel Type: MGO Temperature: 450 – 540 C Exhaust Silencer: 35 Db(A)

NEXT GENERATION NOx REDUCTION

DIGITAL AIRLESS MULTIPOINT® SCR SYSTEMS FOR MARINE APPLICATIONS

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Installation at Shipyard

NEXT GENERATION NOx REDUCTION

DIGITAL AIRLESS MULTIPOINT® SCR SYSTEMS FOR MARINE APPLICATIONS

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Results

•  First vessel have completed more than 1 year of successful operation

•  NOx-reduction up to 95%

•  Airless design means a minimum of moving parts/electronics and a very compact system which is ideal for retrofit when space is limited

•  Airless operation means no need for compressed air and no extra fuel consumption

•  Existing 35 dB(A) exhaust silencer replaced by SCR System and same noise attenuation achieved

•  The vessels comply with IMO requirements valid from 2016 and on

NEXT GENERATION NOx REDUCTION

DIGITAL AIRLESS MULTIPOINT® SCR SYSTEMS FOR MARINE APPLICATIONS

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Contact information

For further details on Digital Airless Multipoint® SCR Systems by DANSK TEKNOLOGI, please contact:

Kristian T. Lund Business Manager

T: +45 48 13 50 00 D: +45 48 13 50 20 M: +45 20 99 66 33 E: KTL@dansk-teknologi.dk

Or visit our website: www.dansk-teknologi.dk

DANSK TEKNOLOGI Østre Teglværksvej 24 DK-3450 Allerød Copenhagen Denmark