Breakthrough order for Krystallon scrubbers

11 Jun 2010
Funnel with Krystallon scrubbers

Funnel with Krystallon scrubbers

Hamworthy Krystallon has claimed the first commercial order for technology capable of meeting new EU regulations on fuel emissions from ships, that does not require owners to switch to high cost distillates.

Italian owner Ignazio Messina & C. has selected Hamworthy Krystallon seawater scrubbers so that four new 45,000 dwt ro-ro ships burning residual fuel oil can meet rules demanding sulphur emissions equivalent to just 0.1% fuel-sulphur content.

The ships, under construction at Daewoo Shipbuilding and Marine Engineering, South Korea, will be available to trade worldwide, although their principal area of operation will be in the Mediterranean, and hence subject to EU directive EC 2005/33. The directive was introduced in January 2010, and imposes a 0.1% limit on sulphur emitted by ships in EU ports, achievable through burning low sulphur content fuel (MGO) or fitting abatement technology.

“These ships are being built with the highest environmental standards in mind,” said Dott Ing Enrico Allieri, technical director, Ignazio Messina. “This is demonstrated by the fact that they are the first ships of their type to feature RINA’s Green Plus notation. The installation of seawater scrubbers to control emissions is critical to our overall environmental objectives. In addition it makes great economical sense.”

Each ship will feature five scrubbers, consisting of four units for the auxiliary engines (each 2 MW) and one unit for the auxiliary boiler (2.5 tons steam per hour). All scrubbers will be housed within the ship funnel casings. Equipment will include a control system, combined wash-water treatment plant and a new range of super duplex stainless steel pumps supplied by Hamworthy’s Singapore plant. All emissions will be continuously monitored.

Burning fuel with a sulphur content of up to 4.5%, the ships will nonetheless be able to meet the 0.1% EU’s in-port emissions requirement. Seawater scrubbing will also have a substantial impact on particulates emissions.

Sigurd Jenssen, managing director, Hamworthy Krystallon, said: “This is an important milestone for Hamworthy Krystallon, but also for exhaust gas scrubbing in the marine industry in general. Messina, DSME and Hamworthy are all leading names in the shipping industry, demonstrating our collective view that seawater scrubbing will become a mainstream marine technology.”

As part of the build project, provision is also being made for the future installation of scrubbers to cut emissions from the ships’ main engines, in line with operation in the Emissions Control Areas defined by IMO, where maximum sulphur content in ship fuels is capped at 1% from 1 July 2010, falling to 0.1% from 2015.

To date, Hamworthy Krystallon seawater scrubbers have been successfully trialled on the P&O Ferries ship Pride of Kent and on the Holland America Lines cruise ship Zaandam. They have also been installed in land-based facilities in Greece and Japan.

Hamworthy beat off a number of suppliers to secure the deal. “Our choice was based on the track record of the Hamworthy Krystallon system, but also on the support available from a global marine group like Hamworthy in committing to technology that is new to us as a shipowner,” said Allieri.

“Of course, we take pride in securing an industry first,” said Jenssen. “However, we also know that viable competing technologies will be critical to the wider uptake of seawater scrubbing by other forward looking shipowners.”

“Shipowners operating under the new European regulations can now be assured that a technology based on proven components that meets both current and planned rules is commercially available. This allows a single-fuel ship design, requiring no additional tanks and fuel treatment systems,” said Jenssen. As with our other marine products, the seawater scrubbing plant has been designed with ‘on/off’ ease of operation in mind and involves no moving parts.”

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