Process for improving the production of benzene and toluene

Process for the production of C6-C7 aromatic compounds from a hydrocarbon feedstock of naphtha type comprising the following steps:

• a) said feedstock (1) is sent into a first fractionation unit (2) in order to obtain an upper stream (3) predominantly comprising C6 and C7 hydrocarbon compounds and a lower stream (9) predominantly comprising C8 to C10 hydrocarbon compounds;
• b) the upper stream (3) is sent into a first catalytic reforming unit (6) in order to obtain a first reformate effluent (8);
• c) the lower stream (9) is sent into a second catalytic reforming unit (12) in order to obtain a second reformate effluent (14);
• d) the first reformate effluent (8) and the second reformate effluent (14) are combined and the combined reformate stream (15) is sent into a recontacting section (16) in order to obtain a first gaseous effluent (45) rich in hydrogen and a liquid effluent of hydrocarbons (55);
• e) the hydrocarbon effluent (55) is sent into a stabilization section (19) in order to recover a second gaseous effluent (52) enriched in C1 and C2 hydrocarbon compounds, a liquid phase predominantly containing C3 and C4 hydrocarbons (20) and a liquid fraction (21) predominantly comprising hydrocarbon compounds having at least four carbon atoms;
• f) said liquid fraction (21) is sent into a reformate separation column (22) in order to obtain an overhead stream (23) comprising C6 and C7 hydrocarbon compounds and a bottom stream (24) comprising hydrocarbon compounds having at least eight carbon atoms.