Separation of Oil Phase from Dilute Oil/Water Emulsion in Confined Space Apparatus

王硕; 秦炜; 戴猷元

doi:10.1016/S1004-9541(12)60384-X

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Separation of Oil Phase from Dilute Oil/Water Emulsion in Confined Space Apparatus

SEPARATION SCIENCE AND ENGINEERING | Updated：2026-01-06

- Separation of Oil Phase from Dilute Oil/Water Emulsion in Confined Space Apparatus
- Chinese Journal of Chemical Engineering Vol. 20, Issue 2, Pages: 239-245(2012)
- Affiliations：
  
  State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University,Beijing,China,100084
- Author bio：
- Funds：
- DOI：10.1016/S1004-9541(12)60384-X
  CLC：
- Published：2012
- Accepted：
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WANG Shuo, QIN Wei, DAI Youyuan. Separation of Oil Phase from Dilute Oil/Water Emulsion in Confined Space Apparatus[J]. Chin.J.Chem.Eng., 2012, 20(2): 239-245.
DOI：

WANG Shuo, QIN Wei, DAI Youyuan. Separation of Oil Phase from Dilute Oil/Water Emulsion in Confined Space Apparatus[J]. Chin.J.Chem.Eng., 2012, 20(2): 239-245. DOI： 10.1016/S1004-9541(12)60384-X.

摘要

Abstract

A miniature process for separating the oil phase from dilute oil/water emulsion is developed.This process applies a confined space apparatus

which is a thin flow channel made of two parallel plastic plates.The space between the two plates is rather narrow to improve the collisions between oil droplets and the plate surface.Oil droplets have an affinity for the plate surface and thus are captured

and then coalesce onto the surface.The droplet size distribution of the residual emulsion resulted from the separation process is remarkably changed.The oil layer on the plate weakens the further separation of oil droplets from the emulsion.Three types of plate materials

polypropylene(PP)

polytetrafluoroethylene(PTFE) and nylon 66

were used.It is found that PP is the best in terms of the oil separation efficiency and nylon 66 is the poorest.The interaction between droplets in the emulsion and plate surface is indicated by the spreading coefficient of oil droplet on the plate in aqueous environment

and the influences of formed oil layer and plate material on the separation efficiency are discussed.

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