One System – Two Options

Hybrid Scrubber Concept with many advantages

The Scrubber is generally applied as hybrid system on the vessel: it combines Open- and
Closed-Loop operation within one scrubber unit. Our customers benefit from the opportunity
to switch between both operation modes, depending on shipping routes and the corresponding statutory regulations.

Open Loop Scrubber

Simple and robust

During Open-Loop operation, sulfur-containing exhaust gases are cleaned by the natural alkalinity of the seawater in a continuous process. The process water is discharged into the sea according to IMO-regulations.

Closed Loop Scrubber

Flexible and future-orientated

During Closed-Loop operation, the Scrubber operates as a closed circulation process by supplying an additive for chemical (SO2) separation to the wash water. As with the Open-Loop operation, the process water can be discharged or stored in a tank. In this way, waste water release in specially protected areas can be entirely avoided.

Technical process of maritime flue gas cleaning

   Open Loop Scrubber

Simple and robust

During Open-Loop operation, sulfur-containing exhaust gases are cleaned by the natural alkalinity of the seawater in a continuous process. The process water is discharged into the sea according to IMO-regulations.

   Closed Loop Scrubber

Flexible and future-orientated

During Closed-Loop operation, the Scrubber operates as a closed circulation process by supplying an additive for chemical (SO2) separation to the wash water. As with the Open-Loop operation, the process water can be discharged or stored in a tank. In this way,
waste water release in specially protected areas can be entirely avoided.

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