Fuels for Marine Applications, Marine Diesel, Hybrid-Fuels
Recent limits for sulfur emissions have lead to Sulfur Emission Controlled Areas (SECA-zones), which are causing refiners and shipping industry to look at alternative fuels to comply with the new regulations.
Marine fuels differ in many aspects from automotive fuels. In most cases the quality is much lower, ship engines are designed to accept different fuel grades with viscosities between 5 and 700 cSt and different pretreatment methods. In general these sulfur-rich residues or intermediates fuels are all less expensive than pure low sulfur distillates of DMA, DMB or DMC quality. Price reductions become the most pressing issues for shipping operators and refineries.
To avoid a significant rise in fuel prices refineries are promoting or developing new blends combining heavy and light streams, which brings these Hybrid fuels into the focus of ship owners, who do not want or are not able to install expensive exhaust treatment equipment.
These new marine diesel types have to be brought to Pour Point specification with PPDs. Clariant has followed this global emission reduction trend very early and developed a number of tailored additives for new types of ship diesel. Accordingly refiners can get help from experts and laboratories to combine their production streams to stable and marketable products meeting the new regulations.
Typical products to treat Marine Fuels are DODIFLOW 6098 or DODIFLOW 6099. After reducing the Pour Point in these ship fuels it remains at the reduced position and does not show any reversion.