Systems and methods of valorization of mixed waste plastic oil to light olefins via a catalytic cracking process along with naphtha as a co-feed/blend

A process for producing light olefins and aromatics, the process comprising:

• providing a waste plastic pyrolysis oil having a first boiling point ranging from about 80° C. to about 450° C.;
• passing the waste plastic pyrolysis oil through a guard bed configured to adsorb chlorine components, silicon components, or a combination thereof when present in the waste plastic pyrolysis oil;
• providing a hydrocarbon stream having a second boiling point ranging from about 30° C. to about 250° C.;
• combining the hydrocarbon stream with the waste plastic pyrolysis oil to provide a combined feed stream, wherein the combined feed stream includes the waste plastic pyrolysis oil ranging from about 500 ppm to about 2% by weight;
• preheating the combined feed stream in a heat exchanger to a temperature of about 400° C. or more;
• and
• feeding the combined feed stream to a fluid catalytic cracking unit with a catalytic cracking catalyst containing a mixture of HZSM-5 and USY to yield a hydrocarbon product stream with a mixture of light olefins and aromatics.

A process for producing light olefins and aromatics, the process comprising:

• providing a waste plastic pyrolysis oil having a first boiling point ranging from about 80° C. to about 450° C.;
• hydrotreating the waste plastic pyrolysis oil in the presence of a hydrotreating catalyst to reduce a content of one or more of chlorine, nitrogen, sulfur, and higher olefin components when be present in the waste plastic pyrolysis oil;
• providing a hydrocarbon stream having a second boiling point ranging from about 30° C. to about 250° C.;
• combining the hydrocarbon stream with the waste plastic pyrolysis oil to provide a combined feed stream, wherein the combined feed stream includes the waste plastic pyrolysis oil ranging from about 500 ppm to about 10% by weight;
• preheating the combined feed stream in a heat exchanger to a temperature of about 400° C. or more;
• and
• feeding the combined feed stream to a fluid catalytic cracking unit with a catalytic cracking catalyst containing a mixture of HZSM-5 and USY to yield a hydrocarbon product stream with a mixture of light olefins and aromatics.