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Use of Polymers in Viscosity Index Modification of Mineral Oils and Pour Point Depression of Vegetable Oils
Published in Girma Biresaw, K.L. Mittal, Surfactants in Tribology, 2017
Dogan Grunberg, Mert Arca, Dan Vargo, Sevim Z. Erhan, Brajendra K. Sharma, Girma Biresaw, K.L. Mittal
Kramer et al. [1] classified mineral base oils into three general groups: paraffinic, naphthenic, and aromatic oils. Paraffinic base oils are manufactured using crude oils that have relatively high alkane contents. After vacuum distillation, aromatics are removed by solvent extraction and then the dearomatized base is dewaxed. Paraffinic oils are generally classified as solvent neutrals (SNs), bright stocks, and spindle oils. Solvent neutral means the base oil has been solvent refined and any acid or base in the base oil has been neutralized [1,2]. Spindle oil refers to low-viscosity paraffinic oils, and bright stock refers to high-viscosity paraffinic base oils. Naphthenic base oils contain a high proportion of cycloalkanes (naphthenes) and less than 55%–60% paraffinic carbon content. These oils are characterized by their excellent low-temperature properties and are suitable for applications that require low PPs, high solvency, and high compatibility with certain resins. Table 4.1 shows the main differences between naphthenic and paraffinic base stocks. They have similar viscosity at 40°C, but there are differences in VI and PP that alter their suitability for use in certain applications [3]. Aromatic oils are extraction by-products obtained during the production of paraffinic oils. These oils have aromatic content, resulting in low aniline points, which makes them useful in applications where a high degree of solvency is desired to dissolve aromatic components or for use as plasticizers in plastics. These oils are dark colored and have relatively high flash points.
Prediction of characteristic properties of crude oil blending with ANN
Published in Journal of Dispersion Science and Technology, 2018
Erdal Karadurmuş, Habib Akyazı, Eda Göz, Mehmet Yüceer
In this study, mixtures of mineral base oils were prepared at different blending ratios. For this purpose, SN-80, SN-100 (Spindle oil), SN-150 (Light Neutral Oil) and SN-350, and SN-500 (Heavy Neutral Oil) paraffinic-based mineral base oils were used. In this process, 95 different binary mixtures of mineral base oils were prepared. Kinematic viscosity, viscosity index, flash point, and pour point of the prepared mixtures were measured at 40°C and 100°C. Additionally, density measurements were made at 20°C. The change in the characterization parameters of binary mixtures with respect to blending ratios is given in Figures 345678. According to Figures 3 and 4, viscosity decreased as the temperature increased.