Improving the cold flow properties of marine diesel fuel using centrifugation

• Nikolay S. Yakovlev Industrial University of Tyumen
• Vyacheslav G. Agaev Industrial University of Tyumen
• Evgeniy O. Zemlyansky Industrial University of Tyumen

DOI: https://doi.org/10.46925//rdluz.29.03

Keywords: diesel fuel, low temperature properties, centrifuge, dewaxing, depressant additive.

Abstract

The possibility of improving the low-temperature properties of marine diesel fuel of the Antipinsky Refinery by dewaxing was studied. Paraffin was isolated from the fuel in a centrifuge in the presence of a depressant additive. The depressant additive is selected from a series of synthesized additives for depressant effectiveness. The influence of the centrifuge rotor speed, the additive content and the initial cooling temperature of the sample on the dewaxing parameters of the fuel was studied. The possibility of isolating the additive from the obtained paraffin concentrates is shown. The dewaxing products obtained under optimal conditions were studied. A paraffin concentrate product containing 40.03% solid paraffins was isolated from fuel. Paraffin was isolated from paraffin concentrate by dewaxing with a selective solvent. The cloud point and freezing point of paraffin were 30 and 29 ° C, respectively. When converted to the original fuel, the amount of released paraffins was 7.3% of the 21% by weight contained in the original fuel. The fuel obtained at optimal parameters for low temperature properties corresponds to grade D of diesel fuel according to EN 590: 2009.

 

References

Agaev S. G., Gultyaev S. V., Yakovlev N. S. (2007). Improving the cold flow properties of diesel fuels. Journal of Applied Chemistry, 80(3): 488-495.

Agaev S. G., Yakovlev N. S., Schipanov V. P. (2008). Improving the cold flow properties of summer diesel fuel at the Achinsk oil refinery. News of higher educational institutions. Oil and gas, 4: 68 -72.

Agaev S. G., Yakovlev N. S., Stolbov A. A. (2012). The effect of higher fatty alcohols on the performance of the process of electrical dewaxing of summer diesel fuel. Neftepererabotka i neftekhimiya [Oil refining and petrochemicals], 6: 22-25.

Agaev S. G., Yakovlev N. S., Zima E. U. (2012). Method for oil dewaxing. Patent 2458970 RF, 22458970 RF, IPC C10G 73/30 (2006.01) C10G 32/02 (2006.01) RU 20458 970 C1. Applied (Application number 2011126199/04) June 24, 2011. Issued August 20, 2012, Bulletin No. 23.

Chernozhukov N. I. (1978). Oil and gas processing technology. Part 3. Moscow: Khimiya [Chemistry]: 423.

García, C.; Martínez, K.; Joves, V.; González, J.; Andarcia, F. (2011). Caracterización viscosa de mezclas de carbón mineral-agua y cenizas volantes-agua mediante fluidización en medio acuoso, Revista de la Universidad del Zulia, 2 (2), 82-99.

Savchenkov A. L., Agaev S. G. (1991). On the distribution of ester depressant additives in oil raffinate. Khimiya i Tekhnologiya Topliv i Masel [Chemistry and Technology of Fuels and Oils], 5: 29-30.

Yakovlev N. S., Agaev S. G. (2012). Dewaxing of summer diesel fuel in a constant electric field. News of higher educational institutions. Oil and gas, 5: 97-101.

Yakovlev N. S., Agaev S. G. (2017). Dewaxing of heavy weight fractional diesel fuel in an electric field. Khimiya i Tekhnologiya Topliv i Masel [Chemistry and Technology of Fuels and Oils], 3: 38-42.