| 摘要 |
Provided is a method for simply producing xylene with high yield even though a catalytically cracked gasoline, which has a low aromatic hydrocarbon content ratio and contains an unsaturated hydrocarbon, a sulfur content, a nitrogen content and the like, is used as a starting material for a conversion reaction such as a disproportionation reaction or a transalkylation reaction. A method for producing xylene, which is characterized by comprising: (a) a fractional distillation step for obtaining a distillate fraction having a boiling point range of 145-205°C by fractional distillation by subjecting a fluid catalytically cracked gasoline to distillation; (b) a hydrogenation step for adjusting the sulfur content to 0-6 ppm by mass and the nitrogen content to 0-6 ppm by mass by subjecting the distillate fraction obtained in the fractional distillation step (a) and having a boiling point range of 145-205°C to a hydrodesulfurization/denitrification reaction; and (c) a disproportionation/transalkylation step for subjecting a product oil obtained in the hydrogenation step (b) and containing an aromatic hydrocarbon to a disproportionation reaction or a transalkylation reaction. |
