Method and system for obtaining polymerizable aromatic compounds

Process (100) for deriving polymerizable aromatic compounds having nine carbon atoms (S) in which a component mixture (B) is formed at least partially by steam cracking, wherein the component mixture (B) is at least partially subjected to a a workup sequence (2, 3, 4, 5) comprising a gasoline removal (5) and thereafter is subjected to a compression (8) and a fractionation (10), and wherein in the gasoline removal (5) and/or during the compression (8) one or more pyrolysis gasoline fractions (H, L) and in the fractionation (10) one or more further pyrolysis gasoline fractions (O) is or are formed, characterized in that a separation feed is formed which comprises more than 75% pyrolysis gasoline from the or at least one of the pyrolysis gasoline fractions (H, L) which is or are formed in the pyrolysis gasoline removal (5) and/or during the compression (8) and less than 25% pyrolysis gasoline from the one or more further pyrolysis gasoline fractions (O) from the fractionation (10), wherein the pyrolysis gasoline from the one or more further pyrolysis gasoline fractions (O) from the fractionation (10) is used in forming the separation feed only to a limited extent or not at all and in that the separation feed is at least partially subjected to a separation (7), wherein in the separation (7) at least one first fraction (P) enriched in aromatic compounds having nine carbon atoms compared to the separation feed is formed.