催化裂化柴油芳烃特别是稠环芳烃含量高 ,用中压加氢改质工艺处理后 ,生产的柴油各项指标符合世界燃料规范Ⅱ类标准 ,且其它产品如重石脑油可作催化重整原料 ,尾油可作蒸汽裂解制乙烯原料。中压加氢改质工艺是增产清洁柴油的有效途径。 Catalytic cracking diesel aromatic hydrocarbons, especially heavy aromatic hydrocarbons, with medium pressure hydrogenation modification process, the diesel indicators produced in line with World Fuel Code Class II standards, and other products such as heavy naphtha can be used as catalytic reforming raw materials , Tail oil can be used for steam cracking ethylene raw materials. Medium pressure hydrogenation upgrading process is an effective way to increase production of clean diesel.