Petroleum Processing and Petrochemicals ›› 2014, Vol. 45 ›› Issue (4): 64-67.

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PREPARATION OF ENVIRONMENTAL-FRIENDLY AROMATIC OIL BY HYDROGENATION-EXTRACTION COMBINATION PROCESS

  

  • Received:2013-09-25 Revised:2013-11-26 Online:2014-04-12 Published:2014-03-24

Abstract: Using the extracted FCC slurry oil as raw material, the environmental-friendly aromatic oil was produced by hydrogenation-extraction combination process. The selective hydrogenation of the slurry feed was conducted under the optimal conditions: 300 ℃, hydrogen pressure 6.0 MPa, reaction time 6 h in an autoclave, then the product was hydrotreated again under the same conditions. The mass fraction of PCA is decreased from 56.28% in raw oil to 7.86% in hydrotreated product and the liquid yield is 94.10%. Further reduction of PCA is completed by the extraction process. Under the conditions of the extraction temperature 50 ℃, extractant to oil ratio 2:1, complex solvent (A: B) ratio 1:1, extraction time 15 min, the content of PCA is decreased to 2.40% with the extracted liquid yield 85.30%. The quality of the product is improved greatly and close to the VIVATEC500.