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

Qiang Deng, Michal Slaný, Huani Zhang, Xuefan Gu, Yongfei Li, Weichao Du and Gang Chen
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Qiang Deng: State Key Laboratory of Petroleum Pollution Control, Xi’an Shiyou University, Xi’an 710065, China
Michal Slaný: Institute of Inorganic Chemistry, Slovak Academy of Sciences, Dúbravská cesta 9, 845 36 Bratislava, Slovakia
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
Weichao Du: State Key Laboratory of Petroleum Pollution Control, 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

Energies, 2021, vol. 14, issue 15, 1-11

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.

Keywords: alkyl aliphatic hydrazine; crude oil; flow improver; viscosity (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
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