Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6632947 | Fuel | 2016 | 8 Pages |
Abstract
Improving the flow ability at a low temperature is vital for the utilization and popularization of biodiesel. The cold flow properties of waste cooking oil biodiesel-0# diesel blends with poly-alpha-olefin (PAO) pour point depressants were studied. Here results showed that B20 (20 vol.% biodiesel-80 vol.% diesel) treated with 400 ppm PAO exhibited the best depression in cloud point, cold filter plugging point and pour point by 8 °C, 9 °C and 7 °C, respectively. The other fuel properties of B20 were also determined and compared with the limits indicated in the ASTM D7467 standard. Viscosity-temperature curves, polarized optical microscopy, low-temperature X-ray diffraction, and differential scanning calorimetry were used to explore the performance mechanism of PAO in biodiesel blends; and results presented that PAO could effectively lower the low-temperature viscosity, delay the aggregation of wax crystals and modify their crystallization behavior by transforming the shape of crystals and depressing the formation of large wax crystals.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
Yuan Xue, Zhicheng Zhao, Guangwen Xu, Xiang Lian, Chao Yang, Weina Zhao, Peng Ma, Hualin Lin, Sheng Han,