EMULSIFIED FUEL

Emulsified fuel in simple terms means the addition of water to fuel oil in such a way that small particles of water are formed in the fuel oil to produce a stable water‐in‐fuel emulsion. The main purpose of diluting fuel oil with small quantities of water is to improve the combustion efficiency by achieving a better heat release rate and to reduce NOx emissions by cooling the combustion.


Solutions for savings costs and compliance with emission regulations

milestones

IMPROVED FUEL EFFICIENCY

The BOS Emulsified Fuel System improves the combustion efficiency by producing stable water-in-fuel emulsions to improve injector fuel atomization. Smaller fuel droplets will achieve better fuel-air mixture as more fuel-air surface will be available for combustion. Therefore, the key to achieving better combustion is to create a secondary atomization effect by adding water into the fuel. The secondary atomization effect creates even smaller fuel droplets after injection.

In addition to the measured fuel savings of  between 2 and 5%, firm evidence of better combustion has also been recorded in the form of  the increased heat release rate.


REDUCED NOx EMISSIONS

The system also reduces NOx emissions by lowering the combustion temperatures. It has been established that 1% of water reduces NOx by about 1%. The system can reduce NOx  emissions by up to 20%, thereby meeting the TIER II requirement.

Smaller SCR

As the BOS EFS can reduce NOx by up to 20%, it can complement Selective Catalytic Reduction (SCR) technology. By installing an EFS, the size of the SCR unit can be reduced by 20%, which will reduce the CAPEX and OPEX associated with the SCR by 20%.


CLEANER EXHAUST AND ENGINE

The use of a Blue Ocean Solutions’ Emulsified Fuel System results in cleaner exhaust and so reduces particulate (PM) emissions. This is achieved by the combination of better combustion and presence of steam reducing and softening the soot, resulting in cleaner exhaust. This is evident visibly in a decrease in the darkness and quantity of smoke coming from the funnel.

The better combustion and presence of steam also improves the condition of the engine. CDO-Analysis conducted by Flame Diagnostics has confirmed this benefit.

Save

Save

Save

Save

Save

Save

Save

Save

EFS SYSTEM

The BOS Emulsified Fuel System improves combustion efficiency by producing stable, water-in-fuel emulsions to improve injector fuel atomization.

The key success factor in emulsified fuel is the ability to produce and maintain the optimum 10% water as water-­in-­fuel particle sizes of 2-­8 microns. This is achieved with the patented BOS Emulsifier that, unlike other systems in the market, has no moving, cavitating or vibrating parts. The performance of the BOS EFS has been verified by ship owners, classification societies and engine manufacturer Wärtsilä. The system can be operated using multi-­fuels including HFO, IFO, MDO, MGO, ULSFO and the new ECA. There is no need forany chemical additives.

MODULAR SYSTEM
THE SYSTEM COMES IN TWO MODULES: THE WATER CONTROLLER MODULE AND THE EMULSIFIER MODULE

solutions_web2


THE BOS EMULSIFIER WITH NO MOVING PARTS

THE CRITICAL COMPONENT FOR PRODUCING OPTIMIZED EMULSIFIED FUEL FOR CONSISTENT FUEL SAVINGS

The invention of the BOS dynamic mixing emulsifier is one of the key developments in emulsified fuel technology. It is developed specifically for producing the optimal water-in-fuel emulsions for achieving the best fuel savings. The BOS emulsifier has no mechanical moving parts and produces emulsions on demand at the consumption rate demanded by the ship engine in ever changing sea conditions.

  • Produces optimal water-in-fuel emulsion to create the secondary atomization effect that improves combustion
  • No mechanical moving parts
  • Designed for reliability and easy maintenance
  • Produces emulsified fuel on demand for immediate consumption. So no storage of emulsified fuel is needed
  • Can be scaled to produce optimal emulsified fuel for ships of any size

EASY AND TROUBLE-FREE OPERATION

The BOS Emulsified Fuel System is designed to be easy to operate. It is fully automated and fail safe with safety interlocks built in.

In the event of an alarm being triggered, the system will automatically switch off the HP water pump and the auto changeover valves will switch back to normal operation and bypass the emulsifier (see the picture below on the left).

Touch screen control panel

The BOS EFS control panel has an intuitive menu, making it simple for the user to set up the system. Reports, historical trends and logs are also provided by the controller. The system can be integrated into the ship’s engine room control system. There is password protection for the key settings.


EASY AND FAST INSTALLATION

Installation of the EFS does not require the ship to be in dry dock. The basic components of the system can be retrofitted while the ship is alongside in port transferring cargo or passengers. Three by-pass valves are fitted  by replacing the small section of the fuel oil pipe between the circulation pump and fuel heater with a prefebricated length. This requires that the engine be powered down, but takes only 3 to 6 hours. The remainder of the installation can then be completed after that without interrupting the ship’s operations, even while at sea if necessary.

Note: A new flow meter may be required if the existing one is not accurate enough (+/- 0,5%) and/or does not provide flow rate measurement.

Save

Save

Save

ACCEPTANCE & CLASSIFICATION
ACCEPTANCE & CLASSIFICATION

STANDARD AND APPROVED PARTS AND EQUIPMENT

The BOS Emulsified Fuel System uses only standard and approved parts and components. The system comes as certified by a classification society according to manufacturing requirements.


ENGINE MANUFACTURERS

“The system has been running for some years on several vessels and has proved not to affect the reliability of the engine”, MAN 2008 about their FWE (fuel water emulsion), see publications below: MAN fuel water emulsification, slide 14.


PERFORMANCE VERIFICATION

The performance of the BOS Emulsified Fuel System has been verified by independent parties: a classification society and an engine manufacturer. The performance verification has been done according to the methodology described on the link below.

Reliable and accurate methodology to verify the change in performance:

lloyds_logo

Independent Verification of Fuel Oil Consumption by Lloyd’s Register

“Within the agreed timeline, Lloyd’s Register provided a concise report detailing its findings, which in this instance confirmed that the claims for performance improvements in fuel consumption had been met to the satisfaction of all parties present.”

ENGINE MONITORING

BOS Engine Performance Software

Blue Ocean Solutions has introduced Engine Performance Software as an optional add-on to the Emulsified Fuel System (EFS). It is an important extension as it analyses the operational data of the engine in real time and uses the results to identify fuel savings that can be gained from the system as well as any abnormalities in the operation of the engine. The evaluation of the engine condition helps in preventive maintenance, maximising fuel efficiency and reducing emissions.



BENEFITS


The operational data of the engine is used to identify :
  • Fuel savings of the engine with EFS
  • Any abnormalities in operation of the engine
Evaluating the engine condition helps in:
  • Preventive maintenance
  • Restoring/boosting fuel efficiency
  • Reducing emissions

FEATURES


Evaluation of engine performance through performance curves
Determination of propeller-loading conditions through load curves
Evaluation of engine condition
  • Comparison of current performance data to shop test data
  • Comparison of current performance data to historical data
  • Deviation charts of current performance data to shop test data and historical data
  • Determination of abnormal operating conditions

Save

Save

Save

Save

Save

Save

Save

Save

Save

Save

Save

Save

Save

Save

Save

Save

Save

Save

Save