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Synthesis of Alkyl Aliphatic Hydrazine and Application in Crude Oil as Flow Improvers

Author

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  • Qiang Deng

    (State Key Laboratory of Petroleum Pollution Control, Xi’an Shiyou University, Xi’an 710065, China
    Co-first authors. These authors contributed equally to this work and should be considered first authors.)

  • Michal Slaný

    (Institute of Inorganic Chemistry, Slovak Academy of Sciences, Dúbravská cesta 9, 845 36 Bratislava, Slovakia
    Institute of Construction and Architecture, Slovak Academy of Sciences, Dúbravská cesta 9, 845 03 Bratislava, Slovakia
    Co-first authors. These authors contributed equally to this work and should be considered first authors.)

  • Huani Zhang

    (State Key Laboratory of Petroleum Pollution Control, Xi’an Shiyou University, Xi’an 710065, China)

  • Xuefan Gu

    (State Key Laboratory of Petroleum Pollution Control, Xi’an Shiyou University, Xi’an 710065, China)

  • Yongfei Li

    (State Key Laboratory of Petroleum Pollution Control, Xi’an Shiyou University, Xi’an 710065, China
    Shaanxi Province Key Laboratory of Environmental Pollution Control and Reservoir Protection Technology of Oilfields, College of Chemistry and Chemical Engineering, Xi’an Shiyou University, Xi’an 710065, China)

  • Weichao Du

    (State Key Laboratory of Petroleum Pollution Control, Xi’an Shiyou University, Xi’an 710065, China
    Shaanxi Province Key Laboratory of Environmental Pollution Control and Reservoir Protection Technology of Oilfields, College of Chemistry and Chemical Engineering, Xi’an Shiyou University, Xi’an 710065, China)

  • Gang Chen

    (State Key Laboratory of Petroleum Pollution Control, Xi’an Shiyou University, Xi’an 710065, China
    Shaanxi Province Key Laboratory of Environmental Pollution Control and Reservoir Protection Technology of Oilfields, College of Chemistry and Chemical Engineering, Xi’an Shiyou University, Xi’an 710065, China)

Abstract

In this paper, alkyl aliphatic hydrazine, which is different from traditional polymer fluidity improver, was synthesized from aliphatic hydrazine and cetane bromide, and evaluated as a pour point and viscosity-reducer depressant for crude oil. The evaluation results showed that alkyl aliphatic hydrazone fully reduced the pour point and viscosity of crude oil with the increase of crude oil fluidity. The viscosity reduction rate of crude oil in Jinghe oilfield was 79.6%, and the pour point was reduced by about 11.3 °C. The viscosity reduction rate of crude oil in Xinjiang Oilfield was 74.7%, and the pour point was reduced by 8.0 °C. The long alkyl chain is beneficial to the eutectic of wax in crude oil, and the polar group inhibits the crystal growth, resulting in the decrease of pour point and viscosity. The waste oil is fully recycled into oilfield chemicals.

Suggested Citation

  • Qiang Deng & Michal Slaný & Huani Zhang & Xuefan Gu & Yongfei Li & Weichao Du & Gang Chen, 2021. "Synthesis of Alkyl Aliphatic Hydrazine and Application in Crude Oil as Flow Improvers," Energies, MDPI, vol. 14(15), pages 1-11, August.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:15:p:4703-:d:607552
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