Integrated process with a depolyaromatization column for the production of benzene, toluene and xylenes from pyrolysis fuel oil stream

A catalytic upgrading process for producing petrochemical substances from a crude hydrocarbon stream, wherein the process comprises a first catalytic depolyaromatization reactor downstream of a steam cracking unit, wherein the first catalytic depolyaromatization reactor comprises a catalyst having a solid heteropolyacid compound, and wherein the process comprises:

• introducing a feed comprising crude oil to the steam cracking unit, wherein the steam cracking produces pyrolysis fuel oil;
• introducing the pyrolysis fuel oil to the first catalytic depolyaromatization reactor to remove polyaromatics from the pyrolysis fuel oil, wherein the depolyaromatization produces polyaromatics adsorbed to the catalyst and depolyaromatized pyrolysis fuel oil having a reduced concentration of polyaromatics;
• introducing the depolyaromatized pyrolysis fuel oil to a hydrocracking unit, wherein the hydrocracking produces a benzene-toluene-xylenes (BTX)-rich stream and liquid petroleum gas;
• separating the BTX-rich stream from the liquid petroleum gas;
• introducing the BTX-rich stream to a BTX complex, wherein the BTX complex produces refined BTX;
• introducing the liquid petroleum gas to the steam cracking unit;
• introducing a wash solvent to the first catalytic depolyaromatization reactor after depolyaromatization to remove the polyaromatics, thereby regenerating the catalyst in the first catalytic depolyaromatization reactor and producing a mixture comprising the wash solvent and the polyaromatics;
• and
• separating the wash solvent from the polyaromatics.