Nippon Yusen Kabushiki Kaisha (NYK) and Nippon Yuka Kogyo Co., Ltd., an NYK Group company, on Monday (23 May) said they have jointly developed a new fuel-oil additive, Yunic 800Eco, effective in dispersing sludge and reducing fuel consumption in VLSFO (very low sulfur fuel oil).
In three fuel consumption ratio reduction tests using Yunic 800Eco with compliant fuel oils in Japan and overseas, the companies observed fuel consumption was reduced by up to 1.2% compared to when the additive was not used while carbon monoxide (CO) emissions were also reduced.
NYK and Nippon Yuka Kogyo have been investigating the properties of VLSFO as one of the measures to comply with SOx emission requirements and in 2019 developed the sludge-dispersing fuel oil additive Yunic 800VLS.
The firms observed Yunic 800VLS is effective against most deteriorated compliant fuel oil, and taking into account present fuel problem situations, the companies were of view that their main target needed to be changed to reduction of fuel consumption.
Both companies then began developing the Yunic 800VLS upgraded version that has a more powerful sludge dispersion characteristic to cover the rest of stubborn deterioration of fuel and fuel consumption reductions.
The duo said they will continue to work to develop additives that are more fuel-efficient and versatile, while maintaining the current sludge dispersion effect, and contribute to the reduction of CO2 emissions from ships.
Photo credit: NYK and Nippon Yuka Kogyo Co., Ltd.
Published: 25 May, 2022
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