engleski

Thermal properties of different poly(alkymethacrylate) additives and their influence on low temperature properties of mineral diesel fuel

Mineral diesel fuel is one of the main products of crude oil refining. It is obtained by mixing petroleum fractions and light gas oil fractions with a boiling range 130 - 370 °C and used in an internal combustion diesel engine where compression causes self-ignition of a mixture of fuel and air. Diesel fuel contains a substantial amount of paraffin waxes that begin to crystallize at low temperatures and tend to agglomerate. The big wax crystals can plug filters affecting the cold flow plugging point (CFPP) and also the pour point (PP) of diesel fuel. In this study, the low temperature properties of non-additivated mineral diesel fuel with the addition of poly(alkyl methacrylate) (PAMA) additives A1 - C3 were investigated. Thermal transitions temperatures were determined using the differential scanning calorimetry (DSC) for pure polymer additives and for diesel blends with up to 2000 ppm of additives. Standard tests for low-temperature properties (HRN EN 116 for CFPP and ASTM D 5950 for PP) have shown that they lower the temperature of CFPP up to 10 °C and PP up to 30 °C.

Polymer additives ; Low-temperature properties ; Diesel fuel

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