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that will have big, modern engines prone to cold corrosion. This means that most scrubber-equipped ships will require cylinder lubricant oils with BN100 or more.
Because these high BN products are already available, there is no need for new lubricants or additive packages to be developed for scrubber operation. That may change if the refineries producing HFO decide to increase the fuel’s sulphur content beyond the current 3.5% maximum. Ship operators with scrubbers could be tempted to higher-sulphur fuels by an attractive price, while refiners could potentially dispose of less desirable fuel stocks, safe in the knowledge that sulphur will be stripped from engine exhaust by scrubbers when it is used.
At this stage the cylinder lubrication requirements of corrosion-prone engines using HFO of higher than 3.5% sulphur have not been considered. If the fuel composition does not change much other than sulphur content, lubricants for these fuels will require an additive package that provides more basicity and detergency. But if refineries add new processes or streams, that might affect the fuel characteristics and need more investigation.
Just as IMO 2020 will be a defining point for the marine fuels market, so will it reshape demand for marine engine oils. For now, the scrubber-installed fleet will operate on existing cylinder oils - although the potential for higher sulphur fuels means even higher-BN lubricants may be needed in the future. But the new VLSFOs will need robust BN40 oils to handle anticipated stability concerns and to ensure peace of mind for ship owners. Lower-sulphur fuels need good deposit handling performance and advanced additives are being deployed to meet the challenge. Their development will not stop after 2020.
As shipping explores an even wider range of future fuels as it looks to eliminate carbon emissions, further advances in additive technology will be crucial as lubricants are called on to handle yet more challenging fuel properties, engine designs and operating profiles.
LINK
www.lubrizol.com
sealandchem.com |
ingevity.com
THE RIGHT PARTNERSHIP. THE RIGHT PRODUCTS. THE RIGHT FORMULA FOR SUCCESS.
Sea-Land Chemical Europe Ltd. is an authorised distribution partner with Ingevity for high-quality speciality additives for lubricant applications.
Diacid 1550™ . Altapyne® L-1 . Altapyne L-5 . Altapyne D 25-30
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