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Flue gas system

These systems cool and clean flue gas available from the ship’s boilers and distribute the gas to the cargo tanks, typically during cargo discharge.

Flue gas is passed through the scrubber for cleaning and cooling before entering the cargo tanks. The type of scrubber used is important with regards to efficiency of extraction of soot and SO2. A poor scrubber will produce poor inert gas which again will cause corrosion and settlement of soot in the cargo tanks. With an efficient scrubber, the use of the inert gas will reduce the corrosion in the tanks considerably. A scrubber with an outside venturi section equipped with an adjustable venturi has proven itself to be most efficient. The venturi section ensures an optimal soot extraction of all the different grades of soot particles during all running conditions.

Brief description

  • Flue gas from ship boilers are used to produce clean and soot free inert gas
  • Efficient cooling by precooler and scrubber tower
  • High pressure centrifugal blowers positioned downstream flue gas scrubber provide inert gas to cargo tanks
  • System capacity is automatically controlled by deck pressure set-point in software
  • Maritime Protection Pressure Vacuum Breaker ensure safe loading and off loading
  • Maritime Protection Deck Water Seal ensures safe sealing of inert gas and prevent back flow of cargo gases to safe area

The most economic and adequate way to produce inert gas on board is to make use of the flue gas from the ship boilers.

Our inert gas systems

  • IGG generator grey

    Inert gas generator solutions

    Vessels carrying cargos that produce hydrocarbon vapors require an inerting solution to eliminate the risk of explosions and fires in the cargo tanks. This can be achieved by keeping the oxygen content below 8%,a standard set by the International Maritime Organisation (IMO).

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    Nitrogen system

    The system is designed to protect transportation of flammable and sensitive cargo. As an inert gas medium, nitrogen is the purest, and thereby the preferred solution for applications where cargo contamination could be an issue.

  • Digg system illustration

    Dry inert gas generator

    Vessels carrying liquefied gas need an inerting solution to prevent explosion on sea voyage just before and after dry-docking. This can be achieved by keeping the oxygen level below 1% in the cargo area.

  • Dual Fuel Inert gas generator

    Dual fuel inert gas generator

    The inert gas generator described earlier, can also be designed for dual fuel operation, i.e. marine diesel oil and natural gas.This application is most commonly used on FPSO vessels and other offshore installations where natural gas is available.

  • Flexinert gas generator

    Flexinert is a combination of a flue gas system and an inert gas generator. As long as sufficient boiler flue gas is available, the inert gas generator is by-passed and the system works as a flue gas system. When no basis gas is available, it works as an inert gas generator.

  • Flue gas system

    These systems cool and clean flue gas available from the ship’s boilers and distribute the gas to the cargo tanks, typically during cargo discharge.

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