Petroleum Processing and Petrochemicals ›› 2015, Vol. 46 ›› Issue (6): 12-16.

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IMPROVING LIGHT OIL YIELD FROM LIAOHE VACCUM RESIDUE USING GROUP TECHNOLOGY

  

  • Received:2014-12-08 Revised:2015-01-16 Online:2015-06-12 Published:2015-05-26

Abstract: Liaohe vacuum residue (VR) deep solvent deasphalting test was conducted using n-C5 solvent at the conditions of solvent ratio 4:1 and 160/180 ℃ and . About 50% CCR and 90% asphaltene were removed and enriched in DOA. The group technology composed of deasphalting, catalytic cracking and coking was used to improve the light oil yield. The results indicate that with increasing the solvent deasphalting pressure, the deasphalting oil yields are increased. The total deasphalting oil yield reaches 74.22%, and the asphalt residue yield decreases significantly at 7.0 MPa. After catalytic cracking, the light oil plus LPG yields of light and heavy deasphalting oils are 25.74% and 12.72%, respectively. The light oil yield is about 7.17% by asphalt residue coking. Compared with coking, the total light oil yield of Liaohe VR is increased 4.06 % by using group technology.