Active Funnel: New scrubber for large ships and high emissions

New scrubber is initially aimed at very large containerships New scrubber is initially aimed at very large containerships

JUNE 1, 2018 — Mitsubishi Shipbuilding Co., Ltd. and Mitsubishi Hitachi Power Systems, Ltd. (MHPS) have jointly launched an advanced SOx abatement system called Active Funnel.

It is a funnel (smokestack) that contains an optimally shaped exhaust gas scrubbing structure that reduces sulfur dioxide (SO2) in the exhaust gas of 3.5%-sulfur-content fuels to that of 0.1%-sulfur-content fuels, conforming with newly introduced SOx emissions regulations coming into effect globally as of January 1, 2020.

The system couples MHPS technologies developed in providing desulfurization systems for thermal power plants with Mitsubishi Shipbuilding’s marine engineering expertise developed through its long shipbuilding experience.

MHPS’ land-based flue gas desulfurization systems have the capacity to treat the equivalent of 7 to 20 times the emissions from a large size marine diesel engine.

The Active Funnel is most suitable for very large containerships with high exhaust gas emissions and limited installation space for SOx abatement systems. It can desulfurize large amounts of exhaust gas and its flexible design makes it possible to be installed even in narrow spaces between the container holds, while maintaining a vessel’s container capacity.

The Active Funnel is also suitable for installation on existing ships since it is provided as one module and has a short retrofitting period.

The Active Funnel is applicable to both open-loop systems and hybrid systems.

Going forward, the product lineup will be expanded by applying the technology to very large crude carriers (VLCC) of 200,000 to 310,000 dwt and very large ore carriers (VLOC).

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