| abstract |
The present invention relates to a method for producing an LPG fraction, a gasoline fraction, a kerosene fraction, a diesel fraction, monocyclic aromatic hydrocarbon and a non-aromatic naphtha fraction of hydrocracked oil obtained by hydrocracking hydrocarbon oil which It contains polycyclic aromatic hydrocarbon to convert into a fraction of light hydrocarbon, and at the same time efficiently and selectively produce monocyclic aromatic hydrocarbons, which are higher value alkylbenzenes. The method for producing a hydrocarbon fraction of the present invention, comprises a hydrocracking step for subjecting a hydrocarbon feedstock which contains polycyclic aromatic hydrocarbon and in which the ratio of carbons that constitute an aromatic ring to total carbons in hydrocarbon oil (the ratio of carbon constituting aromatic ring) is 35% mole or more to catalytic cracking in the presence of hydrogen, and is characterized in that 40% or more of a fraction with a boiling point of 215 ° C or higher in The hydrocarbon feedstock is converted to a fraction with a lower boiling point of 215 ° C and a hydrocracked oil containing 30% by volume or more of monocyclic aromatic hydrocarbon is produced. |