Paraffins for diesel blending
Paraffins are favorable components for diesel fuel. Diesel fuel itself contains paraffins in addition to other hydrocarbon groups. However, diesel fuel contains also napthenics and aromatics, which are not so favorable for combustion. Paraffinic diesel fuel has normally very high cetane number, no sulfur, nitrogen, oxygen nor aromatics. Paraffins can be produced with various processes from fossil or renewable feedstocks. Synthetic fuels are produced by gasification and Fischer-Tropsch (FT) liquefaction from natural gas (GTL) and coal (CTL). Biomass-based BTL fuel is not commercially available, yet. Hydrotreating of oils and fats is a commercial process for producing renewable paraffinic diesel, abbreviated HVO. Today more and more of HVO is produced from waste and residue fat fractions e.g. from animal fats and non-food grade vegetable oil fractions. Paraffinic components for diesel fuel are produced also from crude tall oil, a residue of pulp production.
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Advanced Motor Fuels, one of the International Energy Agency’s (IEA) transportation related Technology Collaboration Programmes (TCP) has prepared many reports on paraffinic fuels: Task 30, Task 31, Task 34-1, Task 37, Task 38, Task 45, Task 52.
Other References
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