Abstract
The results of evaluating the functional properties of oleic acid amides obtained under different synthesis conditions on the functional characteristics of summer hydrotreated diesel fuels produced at two different refineries are presented. It has been established that oleic acid amides in the composition with the depressant of the Keroflux series demonstrate multifunctional properties in the fuel: they improve its low-temperature performance, increase sedimentation stability during cold storage, and also positively affect the lubricating characteristics of the fuel.Comparison of the susceptibility of the fuels from different manufacturers to the additive composition of the depressant and the dispersant showed the influence of the hydrocarbon composition of the fuel on the effectiveness of the action of oleic acid amides as paraffin dispersants. Based on the results of a complex of the tests for the fuels with the additives, including pour point, cold filter plugging point, sedimentation stability, and lubricating properties, the optimal conditions for the synthesis of target amides were determined, which make it possible to obtain the productsthat demonstrate the highest efficiency in the diesel fuel.
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