EMULSIFIED FUEL

Emulsified fuel in simple term means a mixture of water in 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 purposes of doping fuel oil with small quantities of water is to improve the combustion efficiency by achieving better heat release rate and to reduce NOx emissions by cooling the combustion.


Solutions for savings costs and compliance with emission regulations

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IMPROVED FUEL EFFICIENCY

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 achieve 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 2-5%, firm evidence of better combustion has also been recorded in the form of increased heat release rate.


REDUCED NOx EMISSION

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

Smaller SCR

As the system reduces NOx up to 20%, it can complement Selective Catalytic Reduction (SCR) technology. The size of SCR can also be reduced by 20% which reduces CAPEX and OPEX by 20%.


CLEANER EXHAUST AND ENGINE

Blue Ocean Solutions Emulsified Fuel System cleans the exhaust and reduces PM emissions. The better combustion and presence of steam reduces and softens the soot, resulting in cleaner exhaust. This is evident visibly in the emission 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.

benefits of EFS for comliance

EFS SYSTEM

BOS Emulsified Fuel System improves the 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 our patented BOS Emulsifier that unlike other systems in the market, has no moving, cavitating or vibrating parts. The performance of our EFS has been verified by ship owners, classification societies and engine manufacturer Wärtsilä. The system can be operated using multi-­fuels like HFO, IFO, MDO, MGO, ULSFO and new ECA. There is no use of any chemical additives.

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

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BOS EMULSIFIER WITH NO MOVING PARTS

CRITICAL COMPONENT TO PRODUCE OPTIMIZED EMULSIFIED FUEL FOR BEST FUEL SAVINGS CONSISTENTLY

The invention of 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. 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.

emulsifier in 3 sizes

  • 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. Hence, 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

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

In the case of an alarm, the system will automatically switch off the HP water pump and the auto change over valves will switch back to normal operation and bypass the emulsifier (see the picture on the left).

Touch screen control panel

BOS EFS control panel has an intuitive menu making very easy 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 setting.


EASY AND FAST INSTALLATION

The ship does not need to dry dock. Retro fitting is done when the ship is at the port. Three by-pass valves would be installed to the fuel line by retro-fitting a small section of the FO pipe (between the circulation pumps and heaters) that would take only about 3-6 hours. The whole installation would be completed after that without interrupting the ship’s operations.

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.

ACCEPTANCE & CLASSIFICATION
ACCEPTANCE & CLASSIFICATION

STANDARD AND APPROVED PARTS AND EQUIPMENT

BOS Emulsified Fuel System uses only standard and approved parts and equipments. 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 proven 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 BOS Emulsified Fuel System has been verified by an independent party: 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:

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Independent Verification of Fuel Oil Consumption by Lloyd’s Register

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