Part of Wilhelmsen Maritime Services, a Wilh. Wilhelmsen group company

Wilhelmsen Ships Equipment Mail: Bldg 60, Lane 369 Chuang Ye Road, Pudong Kang Qiao Industrial Zone, Shanghai 201319, P.R. China Tel: +86 21 6118 3000, Fax: +86 21 6118 3001 Internet: www.wilhelmsen.com/shipsequipment

What is Wi lhelmsen Ships Equipment

For Service and Spares contact: Wilhelmsen Ships Service Mail: PO Box 33, NO-1324 Lysaker, Norway Tel: +47 67 584000, Fax: +47 67 584319 Internet: www.wilhelmsen.com/shipsservice

ID.No 707035

Wilhelmsen Ships Equipment delivers safety and environmental systems for New-builds and Retrofits in the Marine and Offshore markets. It is present in all major shipbuilding countries and delivers after sales service through its sister company Wilhelmsen Ships Service with local expertise from 390 sites serving 2200 ports in 116 countries.

Wilhelmsen Ships Equipment delivers over 1000 systems per annum from sales locations in South Korea, Japan, China, Singapore, Vietnam, Norway, Finland, The Netherlands, Great Britain, Germany, Poland, Russia, France, Italy, Spain, Croatia, Greece, Turkey, UAE, Iran, India and Brazil.

Products Unitor Fire Suppression Systems • CO2 Fire Extinguishing System • High Expansion Foam Fire Extinguishing System • Deck Foam Fire Extinguishing System • Dry Chemical Powder Fire Extinguishing System • Local Application Fire Fighting System • Deep-Fat Cooker Extinguishing System • Water Based Fire Extinguishing System • Clean Agent Fire Extinguishing System • Sample Extraction Smoke Detection System • Fire Detection and Fire Alarm System Unitor-Generon Nitrogen Systems • Nitrogen Membrane Inert Gas System • Nitrogen Membrane Controlled and Modified Atmosphere System • Nitrogen Cylinder System Environmental Systems • Unitor Ballast Water Treatment System • Unitor SOx Exhuast Gas Scrubber System • Yarwil NOxcare Systems • Unitor Fuel Homogeniser Systems • Unitor Waste Management Systems • Unitor Oily Water Pod Others • Oxygen/Acetylene Fixed System • Fire and Safety Equipment (All systems conform to the relevant SOLAS and IMO requirements and hold approvals required by class)

Trust us to protect you, your people and the environment

ENVIRONMENTAL SYSTEMS

Unitor Fuel Homogeniser Systems • UFH Reducer • UFH Improver • UFH Injector • UFH Recycler

Trust us to protect you, your people and the environment

International legislation to reduce emissions from marine engines using fuels such as Heavy Fuel Oil and Marine Diesel Oil is continually being introduced. The legislation, which dramatically restricts the emission of SOx, soot, NOx and particulates, presents new technical challenges. Wilhelmsen provides a solution to many of these challenges with its unique ‘Unitor Fuel Homogen-iser’ (UFH) product line. The UHF range, which has received type approval from Lloyd’s Register, Bureau Veritas and Germanischer Lloyd, optimises fuels by converting them into droplets of a uniform small size. This leads to substantial improvements in the economical and environmental performance of the engine. The UFH range also has recognition as an ‘approved alterna-tive means’ under the IMO’s MARPOL IOPP an IAPP regulations. The Wilhelmsen UFH ‘Fuel Homogen-iser’ uses cavitations and high shear forces to reduce the average droplet size to 3μm to give a well balanced

fuel with a high surface area. All organic material will be reduced while catfines and solids, which contribute to abrasive wear, will pass through the Fuel Homogeniser untouched. The effectiveness of the purifier at removing these catfines and solids is not affected. This represents a tremendous technical advance over other homogeniser designs. As one of the best environmental systems on the market, the UFH range gives the operator a win-win result in that environmental perform-ance is improved while operating costs are also reduced. This is done in a number of ways, such as reducing the amount of sludge to be landed by converting it into a usable fuel, or by cutting the amount particulate in the exhaust by making the combustion more efficient. These savings in operating costs are what contribute to a return on investment that is often just a few months.

A win-win solution for operating costs and the environment

Shown above on the left and right are magnified images of HFO before and after homogenising. The homogeniser with its rotor & stator assembly is shown in the centre. Before homogenising the fuel droplets are large and there are many asphaltenes (the black particles). Asphaltenes, despite having good fuel value, are normally discarded on account of their size. After homoge-nising the fuel droplets are of a uniform, small size and the asphaltenes have been reduced.

Waste oil and sludge are an unavoidable result of every heavy fuel based installation and they create an expensive disposal problem. Disposal or consumption of the waste oil and sludge in boilers or incinerator plants often leads to unsatisfactory results due to poor combustibility. With the UFH Recycler a blend of sludge and waste oils can be easily burned in

boilers and incinerators with the same efficiency as conventional fuels without the need for expensive feedstock fuels. The UFH Recycler offers an effective solution and sets new standards in efficient pre-treatment of any remain-ing sludge and ordinary waste oils.

UFH Recycler

The benefits • Stable blending of sludge

with LO, HFO, GO, MDO & Drip Oil

• Recycling of waste oil • Improved combustion • Incinerator and boiler can be

operated without injection of expensive gas oil

• Less fouling of boiler and / or incinerator

UFH Recycler

SLUDGE TANK

DIRTY WATER TANK

WASTE OIL

TANK

RECYCLED OIL TANK

BOILER

INCINERATOR

1 2

3

3

4

6

5 7

8

1: FILTER 2: FUEL PUMP 3: FILTER 150MU 4: RECIRCULATION VALVE 5: RECYCLER INLET VALVE 6: RECYCLER OUTLET VALVE 7: LOW LEVEL SWITCH 8: HIGH LEVEL SWITCH

UFH Injector Recent MARPOL regulations require the reduction of NOx emissions. Some states, such as Norway, have gone further and introduced a NOx tax. This reduction presents one the most important challenges for the shipping industry. The UFH Injector is a state of the art development based on the formation of a stable water in fuel emulsion and is the easiest way to achieve a significant NOx reduction. As a rule of thumb for every 1% of water added to the fuel there is a corresponding 1% reduction in NOx emissions. Between 15-20% water addition generally gives the best combination of fuel efficiency and NOx reduction.

By using an Injector it may be possible for the vessel to use a smaller and less expensive Selective Catalytic Reactor (SCR). The SCR will also require 15 – 20% less urea, which presents a major saving in operating costs. Like all machines in the UFH range, the Injector can be used with all kinds of engines from slow speed 2-strokes to high speed 4-strokes making it the most flexible, and effective solution to this challenge.

The benefits • Reduction in NOx emissions up to 20% • Reduction in urea required by SCR up to 20% • Allows vessel to use a smaller SCR • Can help prolong lifetime of SCR catalysts • Reduction in exhaust particulate of up to 90% • Less build-up of waste product on engine parts–less

maintenance • Counteracts asphaltene agglomeration • Negligible pressure drop means no need to upgrade

booster pumps

UFH Injector

1

2

3

4

5

7

TEST POS.

1: FROM HFO ST 2: FROM HFO ST 3: FROM MDO ST 4: DOMESTIC WATER SYSTEM 5: MIX/BUFFER TANK 6: M/G ENGINE 7: WATER TANK 50 LTR

6

Technical Benefits • Dramatically reduced load on filters and purifiers • Less visible exhaust emissions • Increase performance of engines and boilers • Significant reduction of abrasive wear on mechanical

parts Financial Benefits • Reduced operational costs • Short return on investment • Optimal use of fuels • Extended service intervals Environmental Benefits • Waste oil significantly reduced • ‘Green’ ship image • Considerable NOx reduction (UFH injector) • Applicable to all types of fossil and bio fuels • No restricted areas of use

The Unitor Fuel Homogeniser Range Reducer – Improver – Injector - Recycler

References: • Wagenborg Shipping • Wilhelmsen Line Car Carriers • Holland Ship Service

Insignificant pressure drop of only 0.2 – 0.3 bar. No change to booster pumps required.

Internal surfaces have registered “Hard-Coat®” treatment - almost diamond hard. Resists influence of catfines and ensures efficiency remains high.

Features full sealed self-centring rotor + bushing assembly - no mechanical seals or bearings. Uses magnetic coupling with unique ‘loss of coupling’ protection system.

No metal to metal contact. Organic parts are treated and in-organic parts (catfines etc.) pass through untouched. Effectiveness of purifier at removing catfines not affected.

State-of-the-art UFH

High pressure drop across the homogeniser due to close tolerances. May need to upgrade booster pumps.

Metal to metal contact, mechanical seals, bearings and lack of special coatings all contribute to higher maintenance requirements.

Widespread reliance on mechanical seals which are prone to leakages over time. Magnetic couplings tend not to have any in-built safety mechanism to prevent overheating.

Metal to metal contact. Catfines are ground up, purifier can’t remove them resulting in accelerated engine wear.

Old fashioned homogeniser

Pressure drop across homogeniser

Durability – materials of construction

Leakages with resulting fire hazard

Milling of catfines

Issue

The old problems have finally been overcome

Better by design—the technological advances

Plug & Play - plumb into the fuel l i n e , c o n n e c t electric power and press start. Low p ressu re d rop means a booster pump upgrade is unnecessary.

Magnetic Coupling between motor and stator of homogeniser – no direct drive, no mechanical seals and no leaks.

Self Centering Bushings instead of ball bearings means d r a m a t i c a l l y reduced wear and a long life time.

Start – Stop button operation – green button for start, red button for stop – no need for operator to adjust anything.

In built protection – sensors to protect against of f -speci f icat ion t e m p e r a t u r e , pressure and, uniquely, loss of magnetic coupling.

Engine manufacturers have made huge efforts to improve engine efficiency by refining their designs. However, this does not mean the fuel itself is being optimised. To reach the best overall efficiency both engine design and the fuel functionality must be optimised. This explains why even modern engines tend to produce visible exhaust emissions – an indication of incomplete combustion. Fuel consists of fuel droplets of a range of sizes. The process of homogenisation produces fuel droplets of a uniform small size. As can be seen from the diagram on the fold out page,

this gives the fuel a greater surface area. Smaller droplets mean better atomisation and better contact with oxygen with the overall result that combustion and therefore efficiency improve. The UFH Improver will ensure optimum fuel functionality under all operational conditions

which can result in a 0.8% improvement in efficiency and a reduction in exhaust par-ticulate of 90%. The direct cost saving of this is obvious, but a cleaner burning engine will also have reduced layer build-up on parts and therefore can have longer maintenance intervals.

UFH Improver

The benefits • Improvement in fuel efficiency approx 0.8% • 2% fuel reduction possible when used with UFH Reducer • Reduction in exhaust particulate of up to 90% • Less build-up of waste product on engine parts – less maintenance • Can extend maintenance interval on parts such as injectors, liners and turbo chargers • Counteracts agglomeration of asphaltenes • Negligible pressure drop means no need to upgrade booster pumps

UFH Improver

SERVICE TANK MIX/

BUFFER TANK

1 2 3

6

7 8

4 5

M/G ENGINE

1: FILTER 2: BOOSTER PUMP 3: HEATER 4: VISCO SENSOR 5: FINE FILTER 6: IMPROVER BYPASS VALVE 7: IMPROVER INLET VALVE 8: IMPROVER OUTLET VALVE

Disposal of sludge from the purifica-tion of Heavy Fuel Oil (HFO) is a hassle and an operational cost for vessels. The legal options are to land it or incinerate it onboard. Analysis of sludge typically shows a high proportion of asphaltenes, which are tar-like particles. They have good calorific values and can be used as fuel, however because of their large size they tend to be discarded by the fuel purifiers. The UFH offers a true win-win solution

in that by reducing the size of asphaltenes they can pass trough the fuel purifier and be used for benefit as fuel instead of being disposed of as sludge at a cost. The UFH Reducer can reduce HFO sludge generation by over 80%. Unlike earlier homogenisers the UFH Reducer does not

affect the size of catfines, a fact that has been demonstrated by independent laboratory analysis. This means that catfines pass through the UFH Reducer untouched and will be removed by the fuel purifiers like normal. The UFH Reducer actually reduces sludge in two ways because by reducing the amount of work the fuel purifiers have to do, it means that they do not need to perform back flushing cycles as often. Each cycle produces a volume of sludge so by cutting the number of cycles from e.g. 24 to 6 per day a major sludge reduction is achieved, as shown by the results from a test vessel below.

UFH Reducer

Sludge reduction MV Schieborg

0100200300400500600700800900

100011001200

24 8 7 6 4,8 6 6 6 6 6 6 6

Number of desludgings per day

Slud

ge v

olum

e lit

ers

per d

ay

measuredcalculatedReduction %

%100

Above: Graph of results from test vessel. Note close agreement between actual and calculated results.

The Benefits • Reduction of sludge of over 80% • Fuel efficiency gain of approx

1.2% • 2% fuel reduction possible when

used with UFH Improver / Injector. • Dramatically reduces need to land

sludge at e.g. USD200/tonne • Saves hassle of landing sludge

during hectic port calls • Counteracts asphaltene agglom-

eration • Catfines and solids unaffected

and can be removed by fuel purifier as normal

• Negligible pressure drop means no need to upgrade booster pumps

UFH Reducer

SETTING TANK

SLUDGE TANK

SERVICE TANK

4

8 9

7

5

6

1 2 3

1: FILTER 2: FUEL PUMP 3: HEATER 4: SEPARATOR 5: BYPASS VALVE 6: INLET VALVE 7: OUTLET VALVE 8: 3/2-WAY VALVE 9: PRESSURE VALVE

Both HFO and MDO can be seen to consist of droplets when magnified. These droplets can be a range of sizes up to approx 70µm. Smaller fuel droplets produce a sequence of benefits: 1. Better the distribution of the

fuel vapour in the cylinder. 2. More contact with oxygen. 3. Better carburetion. 4. Improved combustion quality. 5. Engine efficiency improves. 6. Engine waste products reduced. During homogenisation in a UFH a fuel droplet of 70μm diameter will be divided into more than 12,000 smaller droplets, thereby achieving a 23 fold increase in surface area.

The Principle of Homogenisation

Surface area of A = 4μ x 4μx 6 = 96μ²

S.A. of one part of B = 1μ x 1μx 6 = 6μ²

Total S.A. of B = 6μ² x 64 = 384 μ²

1

1

1

4

4

4

A B

The above diagrams illustrate how reducing a volume of material into many smaller volumes with the same total volume significantly increases surface area. The same principle applies to fuel droplets.

Combating Agglomeration The diagram below shows how the size of fuel droplets change as they progress through the fuel system. In Ship A, which has no homogenisers onboard, the fuel droplets get bigger at each stage, leading to sub optimal engine performance. The growth in the size of the fuel droplets is termed ‘agglomeration’.

By contrast Ship B has two homogenising units fitted. Both of these dramatically reduce the size of the fuel droplets. In the case of the first homogeniser, a UFH

Reducer, the result is a reduction in the sludge generated of 80%. The second homogeniser, a UFH Improver ensures the fuel is in optimum condition for the engine leading to a 90% reduction in exhaust particulate. Best of all, with both of these units fitted the vessel can look forward to a reduction in fuel consumption in the region of 2%.

Bunker Settling tank Day tank

Heater Heater Auto filter

Visco. meter

Separator Mix tank

Engine Fine filter

UFH Reducer UFH Improver

Ship A

Ship B

Disposal of sludge from the purifica-tion of Heavy Fuel Oil (HFO) is a hassle and an operational cost for vessels. The legal options are to land it or incinerate it onboard. Analysis of sludge typically shows a high proportion of asphaltenes, which are tar-like particles. They have good calorific values and can be used as fuel, however because of their large size they tend to be discarded by the fuel purifiers. The UFH offers a true win-win solution

in that by reducing the size of asphaltenes they can pass trough the fuel purifier and be used for benefit as fuel instead of being disposed of as sludge at a cost. The UFH Reducer can reduce HFO sludge generation by over 80%. Unlike earlier homogenisers the UFH Reducer does not

affect the size of catfines, a fact that has been demonstrated by independent laboratory analysis. This means that catfines pass through the UFH Reducer untouched and will be removed by the fuel purifiers like normal. The UFH Reducer actually reduces sludge in two ways because by reducing the amount of work the fuel purifiers have to do, it means that they do not need to perform back flushing cycles as often. Each cycle produces a volume of sludge so by cutting the number of cycles from e.g. 24 to 6 per day a major sludge reduction is achieved, as shown by the results from a test vessel below.

UFH Reducer

Sludge reduction MV Schieborg

0100200300400500600700800900

100011001200

24 8 7 6 4,8 6 6 6 6 6 6 6

Number of desludgings per day

Slud

ge v

olum

e lit

ers

per d

ay

measuredcalculatedReduction %

%100

Above: Graph of results from test vessel. Note close agreement between actual and calculated results.

The Benefits • Reduction of sludge of over 80% • Fuel efficiency gain of approx

1.2% • 2% fuel reduction possible when

used with UFH Improver / Injector. • Dramatically reduces need to land

sludge at e.g. USD200/tonne • Saves hassle of landing sludge

during hectic port calls • Counteracts asphaltene agglom-

eration • Catfines and solids unaffected

and can be removed by fuel purifier as normal

• Negligible pressure drop means no need to upgrade booster pumps

UFH Reducer

SETTING TANK

SLUDGE TANK

SERVICE TANK

4

8 9

7

5

6

1 2 3

1: FILTER 2: FUEL PUMP 3: HEATER 4: SEPARATOR 5: BYPASS VALVE 6: INLET VALVE 7: OUTLET VALVE 8: 3/2-WAY VALVE 9: PRESSURE VALVE

Both HFO and MDO can be seen to consist of droplets when magnified. These droplets can be a range of sizes up to approx 70µm. Smaller fuel droplets produce a sequence of benefits: 1. Better the distribution of the

fuel vapour in the cylinder. 2. More contact with oxygen. 3. Better carburetion. 4. Improved combustion quality. 5. Engine efficiency improves. 6. Engine waste products reduced. During homogenisation in a UFH a fuel droplet of 70μm diameter will be divided into more than 12,000 smaller droplets, thereby achieving a 23 fold increase in surface area.

The Principle of Homogenisation

Surface area of A = 4μ x 4μx 6 = 96μ²

S.A. of one part of B = 1μ x 1μx 6 = 6μ²

Total S.A. of B = 6μ² x 64 = 384 μ²

1

1

1

4

4

4

A B

The above diagrams illustrate how reducing a volume of material into many smaller volumes with the same total volume significantly increases surface area. The same principle applies to fuel droplets.

Combating Agglomeration The diagram below shows how the size of fuel droplets change as they progress through the fuel system. In Ship A, which has no homogenisers onboard, the fuel droplets get bigger at each stage, leading to sub optimal engine performance. The growth in the size of the fuel droplets is termed ‘agglomeration’.

By contrast Ship B has two homogenising units fitted. Both of these dramatically reduce the size of the fuel droplets. In the case of the first homogeniser, a UFH

Reducer, the result is a reduction in the sludge generated of 80%. The second homogeniser, a UFH Improver ensures the fuel is in optimum condition for the engine leading to a 90% reduction in exhaust particulate. Best of all, with both of these units fitted the vessel can look forward to a reduction in fuel consumption in the region of 2%.

Bunker Settling tank Day tank

Heater Heater Auto filter

Visco. meter

Separator Mix tank

Engine Fine filter

UFH Reducer UFH Improver

Ship A

Ship B

Insignificant pressure drop of only 0.2 – 0.3 bar. No change to booster pumps required.

Internal surfaces have registered “Hard-Coat®” treatment - almost diamond hard. Resists influence of catfines and ensures efficiency remains high.

Features full sealed self-centring rotor + bushing assembly - no mechanical seals or bearings. Uses magnetic coupling with unique ‘loss of coupling’ protection system.

No metal to metal contact. Organic parts are treated and in-organic parts (catfines etc.) pass through untouched. Effectiveness of purifier at removing catfines not affected.

State-of-the-art UFH

High pressure drop across the homogeniser due to close tolerances. May need to upgrade booster pumps.

Metal to metal contact, mechanical seals, bearings and lack of special coatings all contribute to higher maintenance requirements.

Widespread reliance on mechanical seals which are prone to leakages over time. Magnetic couplings tend not to have any in-built safety mechanism to prevent overheating.

Metal to metal contact. Catfines are ground up, purifier can’t remove them resulting in accelerated engine wear.

Old fashioned homogeniser

Pressure drop across homogeniser

Durability – materials of construction

Leakages with resulting fire hazard

Milling of catfines

Issue

The old problems have finally been overcome

Better by design—the technological advances

Plug & Play - plumb into the fuel l i n e , c o n n e c t electric power and press start. Low p ressu re d rop means a booster pump upgrade is unnecessary.

Magnetic Coupling between motor and stator of homogeniser – no direct drive, no mechanical seals and no leaks.

Self Centering Bushings instead of ball bearings means d r a m a t i c a l l y reduced wear and a long life time.

Start – Stop button operation – green button for start, red button for stop – no need for operator to adjust anything.

In built protection – sensors to protect against of f -speci f icat ion t e m p e r a t u r e , pressure and, uniquely, loss of magnetic coupling.

Engine manufacturers have made huge efforts to improve engine efficiency by refining their designs. However, this does not mean the fuel itself is being optimised. To reach the best overall efficiency both engine design and the fuel functionality must be optimised. This explains why even modern engines tend to produce visible exhaust emissions – an indication of incomplete combustion. Fuel consists of fuel droplets of a range of sizes. The process of homogenisation produces fuel droplets of a uniform small size. As can be seen from the diagram on the fold out page,

this gives the fuel a greater surface area. Smaller droplets mean better atomisation and better contact with oxygen with the overall result that combustion and therefore efficiency improve. The UFH Improver will ensure optimum fuel functionality under all operational conditions

which can result in a 0.8% improvement in efficiency and a reduction in exhaust par-ticulate of 90%. The direct cost saving of this is obvious, but a cleaner burning engine will also have reduced layer build-up on parts and therefore can have longer maintenance intervals.

UFH Improver

The benefits • Improvement in fuel efficiency approx 0.8% • 2% fuel reduction possible when used with UFH Reducer • Reduction in exhaust particulate of up to 90% • Less build-up of waste product on engine parts – less maintenance • Can extend maintenance interval on parts such as injectors, liners and turbo chargers • Counteracts agglomeration of asphaltenes • Negligible pressure drop means no need to upgrade booster pumps

UFH Improver

SERVICE TANK MIX/

BUFFER TANK

1 2 3

6

7 8

4 5

M/G ENGINE

1: FILTER 2: BOOSTER PUMP 3: HEATER 4: VISCO SENSOR 5: FINE FILTER 6: IMPROVER BYPASS VALVE 7: IMPROVER INLET VALVE 8: IMPROVER OUTLET VALVE

UFH Injector Recent MARPOL regulations require the reduction of NOx emissions. Some states, such as Norway, have gone further and introduced a NOx tax. This reduction presents one the most important challenges for the shipping industry. The UFH Injector is a state of the art development based on the formation of a stable water in fuel emulsion and is the easiest way to achieve a significant NOx reduction. As a rule of thumb for every 1% of water added to the fuel there is a corresponding 1% reduction in NOx emissions. Between 15-20% water addition generally gives the best combination of fuel efficiency and NOx reduction.

By using an Injector it may be possible for the vessel to use a smaller and less expensive Selective Catalytic Reactor (SCR). The SCR will also require 15 – 20% less urea, which presents a major saving in operating costs. Like all machines in the UFH range, the Injector can be used with all kinds of engines from slow speed 2-strokes to high speed 4-strokes making it the most flexible, and effective solution to this challenge.

The benefits • Reduction in NOx emissions up to 20% • Reduction in urea required by SCR up to 20% • Allows vessel to use a smaller SCR • Can help prolong lifetime of SCR catalysts • Reduction in exhaust particulate of up to 90% • Less build-up of waste product on engine parts–less

maintenance • Counteracts asphaltene agglomeration • Negligible pressure drop means no need to upgrade

booster pumps

UFH Injector

1

2

3

4

5

7

TEST POS.

1: FROM HFO ST 2: FROM HFO ST 3: FROM MDO ST 4: DOMESTIC WATER SYSTEM 5: MIX/BUFFER TANK 6: M/G ENGINE 7: WATER TANK 50 LTR

6

Technical Benefits • Dramatically reduced load on filters and purifiers • Less visible exhaust emissions • Increase performance of engines and boilers • Significant reduction of abrasive wear on mechanical

parts Financial Benefits • Reduced operational costs • Short return on investment • Optimal use of fuels • Extended service intervals Environmental Benefits • Waste oil significantly reduced • ‘Green’ ship image • Considerable NOx reduction (UFH injector) • Applicable to all types of fossil and bio fuels • No restricted areas of use

The Unitor Fuel Homogeniser Range Reducer – Improver – Injector - Recycler

References: • Wagenborg Shipping • Wilhelmsen Line Car Carriers • Holland Ship Service

International legislation to reduce emissions from marine engines using fuels such as Heavy Fuel Oil and Marine Diesel Oil is continually being introduced. The legislation, which dramatically restricts the emission of SOx, soot, NOx and particulates, presents new technical challenges. Wilhelmsen provides a solution to many of these challenges with its unique ‘Unitor Fuel Homogen-iser’ (UFH) product line. The UHF range, which has received type approval from Lloyd’s Register, Bureau Veritas and Germanischer Lloyd, optimises fuels by converting them into droplets of a uniform small size. This leads to substantial improvements in the economical and environmental performance of the engine. The UFH range also has recognition as an ‘approved alterna-tive means’ under the IMO’s MARPOL IOPP an IAPP regulations. The Wilhelmsen UFH ‘Fuel Homogen-iser’ uses cavitations and high shear forces to reduce the average droplet size to 3μm to give a well balanced

fuel with a high surface area. All organic material will be reduced while catfines and solids, which contribute to abrasive wear, will pass through the Fuel Homogeniser untouched. The effectiveness of the purifier at removing these catfines and solids is not affected. This represents a tremendous technical advance over other homogeniser designs. As one of the best environmental systems on the market, the UFH range gives the operator a win-win result in that environmental perform-ance is improved while operating costs are also reduced. This is done in a number of ways, such as reducing the amount of sludge to be landed by converting it into a usable fuel, or by cutting the amount particulate in the exhaust by making the combustion more efficient. These savings in operating costs are what contribute to a return on investment that is often just a few months.

A win-win solution for operating costs and the environment

Shown above on the left and right are magnified images of HFO before and after homogenising. The homogeniser with its rotor & stator assembly is shown in the centre. Before homogenising the fuel droplets are large and there are many asphaltenes (the black particles). Asphaltenes, despite having good fuel value, are normally discarded on account of their size. After homoge-nising the fuel droplets are of a uniform, small size and the asphaltenes have been reduced.

Waste oil and sludge are an unavoidable result of every heavy fuel based installation and they create an expensive disposal problem. Disposal or consumption of the waste oil and sludge in boilers or incinerator plants often leads to unsatisfactory results due to poor combustibility. With the UFH Recycler a blend of sludge and waste oils can be easily burned in

boilers and incinerators with the same efficiency as conventional fuels without the need for expensive feedstock fuels. The UFH Recycler offers an effective solution and sets new standards in efficient pre-treatment of any remain-ing sludge and ordinary waste oils.

UFH Recycler

The benefits • Stable blending of sludge

with LO, HFO, GO, MDO & Drip Oil

• Recycling of waste oil • Improved combustion • Incinerator and boiler can be

operated without injection of expensive gas oil

• Less fouling of boiler and / or incinerator

UFH Recycler

SLUDGE TANK

DIRTY WATER TANK

WASTE OIL

TANK

RECYCLED OIL TANK

BOILER

INCINERATOR

1 2

3

3

4

6

5 7

8

1: FILTER 2: FUEL PUMP 3: FILTER 150MU 4: RECIRCULATION VALVE 5: RECYCLER INLET VALVE 6: RECYCLER OUTLET VALVE 7: LOW LEVEL SWITCH 8: HIGH LEVEL SWITCH

What is W i l h e l m s e n S h i p s E q u i p m e n tWilhelmsen Ships Equipment delivers safety and environmental systems for New-builds and Retrofi ts in the Marine and Offshore markets. It is present in all major shipbuilding countries and delivers after sales service through its sister company Wilhelmsen Ships Service with local expertise from 390 sites serving 2200 ports in 116 countries.

Wilhelmsen Ships Equipment delivers over 1500 systems per annum from sales locations in South Korea, Japan, China, Singapore, Vietnam, Norway, Finland, The Netherlands, Sweden, Denmark, Argentina, Great Britain, Germany, Poland, Russia, France, Italy, Spain, Croatia, Greece, Turkey, Romania, Portugal, Ukraine, UAE, Iran, India, US, Canada and Brazil.

(All systems conform to the relevant SOLAS and IMO requirements and hold approvals required by class)

Trust us to protect you, your people and the environment

Part of Wilhelmsen Martime Services,a Wilh. Wilhelmsen group companyID. No 707035rev.01

For Service and Spares contact: Wilhelmsen Ships ServiceMail: PO Box 33, NO-1324 Lysaker, NorwayTel: +47 67 584000, Fax: +47 67 584319Internet: www.wilhelmsen.com/shipsservice

Wilhelmsen Ships EquipmentMail: P.O. Box 33, No- 1324 Lysaker, NorwayTel: +47 67 584550, Fax: +47 22 134507Internet: www.wilhelmsen.com/shipsequipment

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Environmental SystemsUnitor Ballast Water Treatment SystemUnitor SOx Exhaust Gas Scrubber SystemYarwil NOxcare SystemsUnitor Fuel Homogeniser SystemsUnitor Multi-chamber CompactorUnitor Oily Water Pod

InsulationLNG Tank / LPG Tank / LNG PipeNavy

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