Abstract: The comparative studies of schemes were introduced for processing CNOOC SZ36-1 vacuum No.3 cut with high aromatic content to produce rubber plasticizer. The results showed that the rubber plasticizer with CA value of 12.9% was produced by a combined process of medium pressure hydrotreating and furfural extraction; the rubber plasticizer with CA of 13.4% could be obtained by one stage high pressure hydrotreating process with a light fuel as by-products. While the rubber plasticizer with CA 18.2% was gained by the combined process of high pressure hydrotreating and one stage furfural extraction, then the furfural raffinate oil could be used to produce naphthene-base rubber plasticizer having CN above 40% by hydro-dewaxing. The 3 stage all hydro-processing technology, consisting of high pressure hydrotreating-hydrodewaxing-hydrofinishing can produce naphthene-base rubber plasticizer having CN above 40%. Among these schemes, the combined process of high pressure hydrotreating process-one stage furfural extraction -raffinate oil hydrodewaxing is recommended as the best process.

Key words: high aromatic content, processing, rubber plasticizer, technical evaluation