Structure regulation and influence of comb copolymers as pour point depressants on low temperature fluidity of diesel fuel

Feihe Ren, Yilin Lu, Bin Sun, Chenchen Wang, Jincan Yan, Hualin Lin, Yuan Xue and Sheng Han

Energy, 2022, vol. 254, issue PC

Abstract: Adding pour point depressants (PPDs) is a simple and efficient method to remediate the low temperature fluidity of diesel, however, the depressive effects of these polymeric PPDs are always affected by their molecular structure and polarity. In this work, to obtain high-efficiency PPDs for diesel, a series of comb copolymers of tetradecyl methacrylate-benzalacetone (C14MC-BAE), tetradecyl methacrylate-methyl cinnamate (C14MC-MCA) and tetradecyl methacrylate-ethyl 3-benzoylacrylate (C14MC-EBLA) were synthesized by the regulation of molecular structure. The depressive effects of these copolymers on the cold filter plugging point (CFPP) and solid point (SP) of diesel were studied and compared with that in previous reports. Results showed monomers with carbonyl group closer to benzene ring in side chain have better inhibition. As the mole ratio of monomer up to 9:1, these PPDs had the best depressive effect on CFPP and SP of diesel. Thereinto, C14MC-EBLA (9:1) at 2000 ppm decreased the CFPP and SP of diesel by 12 °C and 15 °C, respectively. Furthermore, the morphology and crystallization behavior of wax crystals in diesel before and after adding PPDs were analyzed by polarizing optical microscope, differential scanning calorimeter and viscosity-temperature curves.

Keywords: Low temperature fluidity; pour point depressants; Copolymers; Depressive effect; Crystallization behavior (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:254:y:2022:i:pc:s036054422201341x

DOI: 10.1016/j.energy.2022.124438

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