Synthesis of binary polymer and its application in demulsification of heavy oil
DOI:
Author:
Affiliation:

Clc Number:

Fund Project:

  • Article
  • |
  • Figures
  • |
  • Metrics
  • |
  • Reference
  • |
  • Related
  • |
  • Cited by
  • |
  • Materials
  • |
  • Comments
    Abstract:

    Using acrylic acid (AA) and self-made nonylphenol polyether acrylate(NPEAA) as raw materials, under the conditions of azobisisobutyronitrile (AIBN) as initiator and toluene as solvent, a binary copolymer heavy oil demulsifier was prepared by initiating polymerization. The structure of the product was confirmed by FTIR and 1HNMR, and the molecular weight was tested by GPC. The critical micelle concentration CMC is 0.5g/L and the the surface tension is 25.684 mN/m measured by fluorescence spectrophotometer and surface tensiometer. Taking the dehydration rate and oil content of the dewatered sewage as measurement indicators, the demulsification performance of polymer demulsifier on Chenzhuang heavy oil W/O emulsion was discussed under different factors, and the optimal demulsification conditions are determined: when the temperature is 55?C, time is 2h, dosage is 0.5g/L, the dehydration rate is 88.5%, and the oil content in the dewatered water is 198.4 mg/L. The effects of polymer demulsifier on viscosity, system stability, oil-water interface and micro demulsification process of emulsion system were studied. It was found that polymer demulsifier is easier to wet and diffuse at oil-water interface, with fast dehydration rate and good demulsification effect.

    Reference
    Related
    Cited by
Get Citation
Share
Article Metrics
  • Abstract:
  • PDF:
  • HTML:
  • Cited by:
History
  • Received:August 29,2020
  • Revised:November 17,2020
  • Adopted:November 23,2020
  • Online: February 02,2021
  • Published: