Wärtsilä’s has introduced its Compact Reliq reliquefaction plant, a system designed to reliquefy boil-off gas (BOG) on board gas carriers and LNG bunker vessels and to keep cargo cool
The system’s compact design enables it to be easily installed on existing vessels, according to Wärtsilä Marine sales & marketing director for gas solutions Kjell Ove Ulstein.
“Wärtsilä has been a pioneer in BOG reliquefaction and the Compact Reliq is a continuation of our strong development activities in this field. As the global market for LNG applications expands in response to increasing environmental regulations, greater flexibility in meeting these growing needs is required. The Compact Reliq is an important and innovative new piece towards completing the puzzle,” he said.
In particular, a steadily increasing fleet of LNG bunker vessels coming into service around the world as shipping’s fuels landscape shifts to meet regulations such as IMO’s sulphur cap highlight the issue of boil-off gas from liquid vaporising due to heat ingress into cargo containment systems.
As with previously delivered Wärtsilä reliquefaction systems, the Compact Reliq is based on the company’s proprietary Brayton technology that allows a portion of the BOG to be utilised as fuel for the vessel, while the excess can be liquefied and sold with the LNG cargo.
The Compact Reliq is compatible with Wärtsilä’s operational performance improvement and monitoring protocol and can be fully integrated with the ship’s planned maintenance system.
An animation of the Compact Reliq can be viewed here.
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