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Prediction of Density and Refractive Index of Lubricating oils during Secondary Solvent extraction Process by furfural

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China Petroleum Processing & Petrochemical Technology 2021年第3期23卷 127-136页

作者： Xu Xiaoling Liu Yansheng State Key Laboratory of Heavy Oil Processing China University of Petroleum(Beijing)at KaramayKaramay Xinjiang 834000 State Key Laboratory of Heavy Oil Processing China University of Petroleum(Beijing)Beijing 102200

To meet the requirements for high aromatic content and low polycyclic aromatic(PCA)concentration,eco-friendly aromatic-rich rubber extender oils are usually produced by two-stage solvent extraction processes with *** the different properties of rubber processing oils,density and refractive index are some of the most important properties related to their final *** types of methods,including a pseudo-component approach by using mixing rules and several correlations,were used for calculation of density and refractive index at 20℃ of paraffinic furfural-extract oils and their secondary *** indicated that similar accuracy was obtained for predicting the density and the refractive index of furfural+furfural-extract paraffinic oil ***,the quadratic correlation presents its advantage over the pseudo-component approach when the composition of oils is not ***,the quadratic correlation was also used for naphthenic lubricating oils during two-stage solvent extraction *** predictions showed much larger discrepancies with respect to experimental values than those of paraffinic lubricating oils,which indicated that the quadratic correlation was more suitable for paraffinic oils with a CN value of below 37%.

关键词： density refractive index pseudo-components paraffinic furfural-extract oils naphthenic lubricating oils solvent extraction

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