Diesel Dewaxing
Shell Diesel Dewaxing technology offers the best diesel yields, significantly reducing naphtha production and creating unbeatable on-stream stability combined with operating flexibility. It can provide consistent and reliable cold flow improvements for high-value diesel production.
How Diesel Dewaxing Improves Cold Flow Properties
For regions with a colder climate, it is essential that flow properties like cloud point, pour point, and cold filter plugging point are optimised during the winter months. This is required for industrial applications as well as domestic uses like automotive and heating oil.
Normal paraffins have a detrimental effect on the low-temperature properties of diesel fuels. When lower-end boiling points are expected, like those often seen in western Europe, long-chain paraffins in diesel fuels can still be a problem. Without expensive additives, long-chain paraffins result in unacceptable cold flow properties.
The Shell Diesel Dewaxing process improves cold flow properties by selective hydroisomerisation and hydrocracking of normal and slightly branched-paraffins.
Why Shell Catalysts & Technologies
Shell Diesel Dewaxing technology has enabled refineries to produce ultra-low-sulphur diesel (ULSD) that meets stringent diesel specifications and the required cold flow properties for winter grade diesel. It continues to help refineries produce high yields, excellent product qualities, and differentiated operating strategies with longer cycles. As an owner-operator, Shell Catalysts & Technologies validates these innovations in global facilities, creating proven, reliable, and up-to-date technology.
We offer premier catalysts, well-proven solutions and top-tier technical support to help refiners extract more value from their distillate units.
Each catalyst system is tailored to the specific requirements of the site including feedstock options, hydrogen availability, and desired product specifications. The process starts with a diagnostic discussion to gain a thorough understanding of the situation followed by an optimised design from our extensive catalyst portfolio. A dedicated and experienced Shell Catalysts & Technologies team works with your site personnel to ensure key performance targets are met.
SDD-800 is an industry-proven USLD production dewax catalyst for cold flow improvement. It offers exceptional activity and stability over a wide range of feedstocks and operating conditions. It is designed to maximise distillate yields in conventional and deep (arctic grade) single stage dewaxing.
