Contract for largest fully integrated scrubber system

Alfa Laval has signed a contract with Amsterdam-based shipowner Spliethoff that covers the retrofit of a multiple inlet PureSOx exhaust gas cleaning system on board one of Spliethoff’s vessels, which operates mainly in the North European ECA area.

PureSOx by Alfa Laval

It is the first order received by Alfa Laval for such a multiple inlet system. Since the vessel’s engines have a combined rated output of 28 MW, this will be the largest marine scrubbing system ever sold.

The system is the first to utilise just one scrubber to clean the exhaust gases for the main as well as the auxiliary engines, according to Alfa Laval.  PureSOx, with a sulphur removal rate of more than 98%, is a hybrid system that can operate on either sea water or fresh water. The ability to operate the system in sea water mode is said to provide significant savings on caustic soda and fresh water consumption. In areas with low alkalinity, the system will switch to fresh water mode. In this mode the water used for cleaning the exhaust gas is circulated in a closed system with zero discharge to the environment. Alfa Laval’s high speed separation technology is used to clean the effluent to ensure compliance with effluent water discharge criteria.
To minimise the energy consumption of the scrubber, the water flow is automatically adjusted to the engine power. The system is also designed to vary the water flow depending on the sulphur content in the fuel.

Alfa Laval already has another system in operation on DFDS “Ficaria Seaways”. This system treats the exhaust gas of a 21-MW MAN main engine and is currently the largest scrubber in operation in the market. As Alfa Laval notes,  the system has completed more than 4,000 operating hours, to date.