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Effect of Comb-Type Copolymers on the Non-Isothermal Crystallization Behavior of Paraffin in Methyl Ethyl Ketone (MEK)–Toluene Dewaxing

Author

Listed:
  • Ying Xiong

    (School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China)

  • Xinyao Nie

    (School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
    Liaoning Qingyang Chemical Industry Corporation, Liaoyang 111000, China)

  • Zheng Wang

    (School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China)

  • Hongyang Li

    (School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China)

  • Yueqin Song

    (School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China)

  • Jinan Wang

    (ESIQIE, Instituto Politécnico Nacional, Col. Zacatenco, Mexico City 07738, Mexico)

  • Xiaolong Zhou

    (School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China)

  • Lifang Chen

    (ESIQIE, Instituto Politécnico Nacional, Col. Zacatenco, Mexico City 07738, Mexico)

Abstract

Two comb-type copolymers were synthesized by modifications of the maleic anhydride-α-octadecene copolymer with aniline (AMAC) and with phenethylamine (EMAC), respectively. The effects of AMAC and EMAC on the non-isothermal crystallization kinetics of the MEK–toluene dewaxing process were comparatively investigated. The results showed that, under the optimum process conditions, the addition of 100 ppm AMAC or EMAC could increase the yield of dewaxed oil (DWO) from 67.21% to 70.87% or 69.90%, respectively, and increase the filtration rate by 80% and 70%, respectively. The non-isothermal crystallization kinetics analysis showed that the crystallization process conformed to Mo’s equation, and the addition of AMAC and EMAC slowed down the crystallization rate of paraffin. The polarizing light microscope observations revealed that the addition of AMAC promoted the formation of snow flower-like crystals, and the EMAC addition led to the crystals having longer rods with a relatively complete morphology. This work provided useful experimental data for a better understanding of the roles of comb-type copolymer additives in the MEK–toluene dewaxing process.

Suggested Citation

  • Ying Xiong & Xinyao Nie & Zheng Wang & Hongyang Li & Yueqin Song & Jinan Wang & Xiaolong Zhou & Lifang Chen, 2022. "Effect of Comb-Type Copolymers on the Non-Isothermal Crystallization Behavior of Paraffin in Methyl Ethyl Ketone (MEK)–Toluene Dewaxing," Energies, MDPI, vol. 15(11), pages 1-18, May.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:11:p:3989-:d:826716
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    References listed on IDEAS

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    1. Xinyuan Li & Shu Lu & Meifei Niu & Ruzhen Cheng & Yanjun Gong & Jun Xu, 2021. "Asphaltene Inhibition and Flow Improvement of Crude Oil with a High Content of Asphaltene and Wax by Polymers Bearing Ultra-Long Side Chain," Energies, MDPI, vol. 14(24), pages 1-18, December.
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