A thermodynamic model for predicting n-paraffin crystallization in diesel fuels

Settling of paraffin crystals in cooled middle distillate fuels

“…7) showed that the crystals were enriched with the higher molecular weight paraffins with respect to the composition of the initial mixture. This result is in agreement with thermodynamic models of paraffin precipitation from solutions [32,33].…”

Control of n-alkanes crystallization by ethylene–vinyl acetate copolymers

“…Paraffin mixtures crystallize as orthorhombic or hexagonal phases [18][19][20][21]. The thermodynamic behavior of paraffin mixture solutions resembles eutectic solidification [22].…”

Modeling high‐pressure wax formation in petroleum fluids

“…To build up this correlation, some experimental data of WAT performed at atmospheric pressure were taken from the literature. 12,39,40 However, because the amount of data available was not large enough and the composition of the investigated systems was too close, an artificial database was built. Starting from the mixture 2-SM, the composition of the artificial systems was built by gradually adding some heavy paraffins to reach, finally, a heavy fraction with 80 paraffins (mixtures from 9-SM to 18-SM).…”

“…For crude oils this number typically ranges between 20 and 50. The predictive capacity of the model using the developed correlation of was also tested on the complex systems previously studied (Table 1), as well as on other atmospheric data for multiparaffinic systems 39 that did not enter into development of the correlation.…”

“…In Table 3, a comparison between experimental and predicted WAT values at atmospheric pressure for all the systems studied by Reddy 39 is presented. The absolute deviation does not exceed 2.65 K and the average deviation of about 1.1 K is well within the experimental uncertainty of the data for the different diesel fuels.…”