Patent ID: 9382174
Filing Date: 2016-07-05
CPC Classification: C07C,C10G

Claim Text:
1. A method for producing monocyclic aromatic hydrocarbons having 6 to 8 carbon atoms from an oil feedstock having a 10 vol % distillation temperature of 140° C. or higher and a 90 vol % distillation temperature of 380° C. or lower, the method comprising: a cracking reforming reaction step of bringing the oil feedstock into contact with a catalyst for monocyclic aromatic hydrocarbon production containing a crystalline aluminosilicate, and causing the oil feedstock to react, thereby obtaining a product containing monocyclic aromatic hydrocarbons having 6 to 8 carbon atoms, a heavy fraction having 9 or more carbon atoms including polycyclic aromatic hydrocarbons, hydrogen, methane, ethane, ethylene and LPG; a hydrogenation reaction step of hydrogenating the product produced in the cracking reforming reaction step; a monocyclic aromatic hydrocarbon recovery step of recovering monocyclic aromatic hydrocarbons having 6 to 8 carbon atoms separated from a hydrogenation product obtained in the hydrogenation reaction step; and a recycling step of returning a heavy fraction having 9 or more carbon atoms separated from the hydrogenation product obtained in the hydrogenation reaction step to the cracking reforming reaction step,