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渣油催化油浆经双溶剂抽提后的抽余油，其饱和烃含量及Ｈ／Ｃ比得到提高，芳烃含量降低，可大大改善催化裂化进料质量，抽出的重质芳烃可作为橡胶软化剂、针状焦及增塑剂等原料，该工艺的实施能带来可观的经济效益
Residual oil after the double-solvent extraction of residual oil catalyzed by the residual oil can increase the saturated hydrocarbon content and the H / C ratio and lower the aromatic content, which can greatly improve the feed quality of the FCC. The extracted heavy aromatics can be used as rubber softening Agents, needle coke and plasticizers and other raw materials, the implementation of the process can bring considerable economic benefits