| abstract |
A method of producing monocyclic aromatic hydrocarbons includes bringing a feedstock oil having a 10 vol% distillation temperature of 140°C or higher and a 90 vol% distillation temperature of 380°C or lower, into contact with a catalyst for monocyclic aromatic hydrocarbon production containing a crystalline aluminosilicate, in which a content ratio of monocyclic naphthenobenzenes in the feedstock oil is adjusted to 10 mass% to 90 mass%, by mixing a hydrocarbon oil A having a 10 vol% distillation temperature of 140°C or higher and a 90 vol% distillation temperature of 380°C or lower with a hydrocarbon oil B containing more monocyclic naphthenobenzenes than the hydrocarbon oil A. According to the present invention, a method of producing a BTX fraction from a fraction containing a light cycle oil (LCO) produced by a FCC apparatus, which enables a more efficient production of the BTX fraction than conventional methods without the coexistence of high-pressure molecular hydrogen, can be provided. |