DODIFLOW™ 8421
From the 1st of January 2020, the International Maritime Organization will implement a sulfur limit for marine fuels of 0.5% also known as “IMO 2020”. These low sulfur fuel oils (LSFO) may partly arrive from a sweet crude diet and as a residue-based blend of different refinery streams, like straight run, hydro-treated or hydro-cracked components. Depending on the composition, the LSFO qualities may show an increased pour point.
DODIFLOW™ 8421 is a specialized pour point depressant developed to improve the cold flow properties of 0.5% sulfur fuel oils that allows for compliance to the ISO 8217 fuel specification.
Product Information
- Specialized pour point depressant designed to improve the cold flow properties of LSFO.
- Prevents gelling of residue-based low sulfur fuel oils.
- Allows for compliance to ISO 8217 specification.
- Pour Point Depressant
DODIFLOW™ 8421 is a pour point depressant (PPD) concentrate consisting of an active polymer dissolved in a hydrocarbon solvent.
DODIFLOW™ 8421 has been developed to significantly improve the pour point of 0.5 % sulfur fuel oils, such as low sulfur fuel oil (LSFO) and very low sulfur fuel oil (VLSFO) to help achieve the specification requirements of ISO 8217.
| PHYSICAL DATA* | approx. | |
| Appearance | Visual | Light brown wax |
|
Density
(DIN EN ISO 15212-1 at 25°C)
|
[g/cm3] | 0.87 |
|
Viscosity
(ISO 6388 at 80°C)
|
[mPas] | 210 |
|
Pour Point
(ISO 3016)
|
[°C] | 36 |
|
Flash Point
(ASTM D 93)
|
[°C] | 50 |
| Solubility (at 30 °C) | Soluble in aromatic solvents (e.g. xylene and aliphatic-rich solvent e.g. naphtha).
Insoluble in alcohol and water. |
*These do not constitute a specification.
DODIFLOW™ 8421 can be injected undiluted and requires heating to 50 – 60°C before use. For optimal performance, the temperature of the LSFO or VLSFO being treated with DODIFLOW™ 8421 should be above the wax appearance temperature (WAT) of that oil.
Treatment rates can vary but for LSFO and VLSFO a typical dose rate of 250 – 750 ppm is sufficient to significantly reduce the pour point depending on the oil properties.
For more challenging LSFO and VLSFO streams, treatment rates between 500 – 1500 ppm may be required, depending on the composition of the oil being treated.
In addition to lowering the pour point, DODIFLOW™ 8421 can also help reduce the viscosity and yield stress of LSFO and VLSFO. DODIFLOW™ 8421 also exhibits wax inhibitor properties and can help to mitigate wax precipitation in fuel and storage tanks.
If required, DODIFLOW™ 8421 can be diluted in hydrocarbon solvent in ratios of 1:1 to 1:4.
DODIFLOW™ 8421 is available in steel drums (200 L) or iso-containers. When stored in the original closed packaging and protected from environmental effects, DODIFLOW™ 8421 has a shelf life of 2 years.
Important: After prolonged storage at lower temperatures, the additive should first be heated and homogenized before further use.
DODIFLOW™ 8421 is intended for technical use only. Please consult the safety data sheet for further information.
The compatibility with metals, plastics and elastomers were deduced from typical behavior against the containing solvent. The product is compatible for storage in carbon and stainless steel. Other compatible materials are e.g. PTFE and fluoroelastomers.
