Alfa Laval Inline scrubber design
The inline scrubber design, or I-design, builds directly on Alfa Laval’s proven PureSOx technology. But it provides an additional alternative for vessels with more complex structural needs, such as certain cruise ships and RoPax vessels.
“Through open-loop, closed-loop and hybrid arrangements, PureSOx can be suited to any vessel’s sailing profile,” said René Diks, manager marketing & sales, exhaust gas cleaning, at Alfa Laval. “By adding an inline scrubber design to the already flexible PureSOx platform, we’ve made PureSOx even easier to adapt to individual vessel constructions.”
An important consideration in creating an inline PureSOx scrubber was the water trap, which is not formed naturally as it is in the existing U-design.
Because the absorber section is located atop the jet section in the I-design, no water trap is created between the two. A key focus was eliminating the potential for water backflow, which is done by means of an internal water trap combined with overboard arrangements.
As with the U-design PureSOx scrubber, the I-design scrubber can be configured with multiple inlets. This reduces space needs and installation costs by allowing one scrubber to handle exhaust gas from multiple sources, including boilers and main and auxiliary engines.
A further alternative for inline PureSOx configurations is reflux. This option is especially attractive for cruise ships, RoPax vessels and other vessels that carry passengers, as it reduces the risk of dirty water droplets discolouring the ship’s deck.
The PureSOx water cleaning unit also uses centrifugal separation, an Alfa Laval core technology that is completely unaffected by pitch and roll, setting it apart from other cleaning systems on the market.
