Upgrading of the aromatics originating from catalytic cracked gasolines to the aromatics complex

Process for the treatment and separation of aromatic compounds starting from a gasoline feedstock, comprising the following stages:

• selective hydrogenation (A) of the gasoline feedstock (1) in order to hydrogenate at least diolefins contained in the gasoline feedstock (1) in the presence of hydrogen (2) and to produce a selective hydrogenation effluent (3);
• fractionation (B) of the selective hydrogenation effluent (3) in order to produce at least a C5-cut (4) containing compounds having 5 or less carbon atoms and a C6+ cut (5) containing compounds having at least 6 carbon atoms;
• hydrogenation (C) of the C6+ cut (5) in order to hydrogenate at least olefins contained in the C6+ cut (5) in the presence of hydrogen and to produce a hydrogenation effluent (6);
• extraction of the aromatics (D) from the hydrogenation effluent (6) in order to produce at least an aromatic stream (17) concentrated in aromatic compounds with respect to the hydrogenation effluent (6) and a raffinate (10) concentrated in non-aromatic compounds with respect to the composition of the hydrogenation effluent (6).