Processing method of inferior catalytic diesel oil

The invention provides a processing method of inferior catalytic diesel oil, which comprises the following steps: step 1, carrying out solvent extraction on the inferior catalytic diesel oil to obtain raffinate oil rich in alkane and extract oil rich in aromatic hydrocarbon; step 2, carrying out mild hydrotreatment on the extract oil rich in aromatic hydrocarbon to obtain hydrogenated diesel oil; and step 3, carrying out catalytic cracking treatment on the hydrogenated diesel oil obtained in the step 2. According to the processing method, high-quality gasoline products and high-value by-products such as ethylene, propylene, butane and butene can be produced in a high yield, the utilization rate of the catalytic diesel oil is obviously increased, the hydrogenation cost is greatly reduced, and the yield of the high-value products is greatly increased. 本发明提供了一种劣质催化柴油的加工方法，包括如下步骤：步骤1，将劣质催化柴油进行溶剂萃取，得到富含烷烃的抽余油和富含芳烃的抽出油；步骤2，将富含芳烃的抽出油进行缓和加氢处理，得到加氢柴油；步骤3，将步骤2得到的加氢柴油进行催化裂化处理。本发明加工方法能多产高品质产物汽油以及乙烯、丙烯、丁烷、丁烯等高价值副产物，本发明中催化