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Petroleum Science and Technology Volume 30, 2012 - Issue 13
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Original Articles

Removal of the Polycyclic Aromatic to Produce Eco-friendly Aromatic-rich Rubber Extender Oils

Y. Lü Research Centre of Petroleum Processing, East China University of Science and Technology, Shanghai, P. R. China
,
H. Pan Research Centre of Petroleum Processing, East China University of Science and Technology, Shanghai, P. R. China
&
J. Yin Research Centre of Petroleum Processing, East China University of Science and Technology, Shanghai, P. R. China
Pages 1335-1342 | Received 17 May 2010, Accepted 18 Jun 2010, Published online: 14 May 2012
 
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Abstract

Polycyclic aromatic (PCA) hydrocarbon-rich extender oils were to be banned by December 2009, which gave rise to challenges for the oil and rubber industries. In the present work, removal PCA from distillate aromatic extracts (DAE) by absorption and solvent extraction were studied. When the ratio of solvent-sample was 8:1, 81.2% PCA in DAE was removed by three-stage countercurrent extraction using dimethyl sulfoxide as the extractant, which simulated industrial continuous flowsheet. Using the extraction-absorption processing, the content of PCA in DAE was further decreased to 2.93%. The properties of the oil sample after removal PCA accorded with the requirements of eco-friendly aromatic-rich rubber extender oil.

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