Method of producing aromatic hydrocarbons and olefin from hydrocarbonaceous oils comprising large amounts of polycyclic aromatic compounds

A method of producing an aromatic hydrocarbon and olefin, comprising:

• (a) subjecting an oil including a large amount of a polycyclic aromatic compound having two or more rings to partial hydrogenation under reaction conditions of 310˜360° C., 50˜70 atm, and LHSV (Liquid Hourly Space Velocity) of 0.7˜1.0 hr−1 using a hydrogenation catalyst, thus obtaining a partially hydrogenated component;
• (b) subjecting the partially hydrogenated component obtained in (a) to catalytic cracking using a catalytic cracking catalyst, thus obtaining a catalytic cracked component;
• and
• (c) separating the catalytic cracked component obtained in (b) into (i) benzene, toluene, xylene and a C9+ aromatic hydrocarbon, (ii) an olefin component, and (iii) a residual oil.