A process for processing mixed plastics comprising simultaneous pyrolysis and dechlorination of the mixed plastics, the process comprising: (a) contacting the mixed plastics with a zeolitic catalyst in a pyrolysis unit at a pyrolysis temperature of from 300 °C to 500 °C to produce a hydrocarbon product, wherein the hydrocarbon product comprises a gas phase and a liquid phase; (b) separating the hydrocarbon product into a hydrocarbon gas stream and a hydrocarbon liquid stream, wherein the hydrocarbon gas stream comprises at least a portion of the gas phase of the hydrocarbon product, wherein the hydrocarbon liquid stream comprises at least a portion of the liquid phase of the hydrocarbon product, wherein the hydrocarbon liquid stream comprises one or more chloride compounds in an amount of less than 100 ppmw chloride, based on the total weight of the hydrocarbon liquid stream, and wherein the hydrocarbon liquid stream is characterized by a viscosity of less than 400 cP at a temperature of 300 °C; (c) conveying at least a portion of the hydrocarbon liquid stream to a first hydroprocessing unit to produce a first treated hydrocarbon liquid stream and a first hydroprocessing unit gas product stream, wherein the first treated hydrocarbon liquid stream is characterized by a boiling point that is lower than a boiling point of the hydrocarbon liquid stream, wherein the first treated hydrocarbon liquid stream is characterized by a viscosity that is lower than the viscosity of the hydrocarbon liquid stream, and wherein the first treated hydrocarbon liquid stream is characterized by a chloride content of less than 10 ppmw chloride, based on the total weight of the first treated hydrocarbon liquid stream; and (d) spraying at least a portion of the first treated hydrocarbon liquid stream as droplets into a fluid catalytic cracker operated in a hydropyrolysis mode to produce a second treated hydrocarbon liquid stream and a fluid catalytic cracker gas product stream, wherein the droplets are characterized by an average droplet size of less than 300 microns, wherein the second treated hydrocarbon liquid stream comprises one or more chloride compounds in an amount of less than 10 ppmw chloride, based on the total weight of the second treated hydrocarbon liquid stream, and wherein the second treated hydrocarbon liquid stream is characterized by an aromatics content of greater than 20 wt.% aromatics, based on the total weight of the second treated hydrocarbon liquid stream. (a) contacting the mixed plastics with a zeolitic catalyst in a pyrolysis unit at a pyrolysis temperature of from 300 °C to 500 °C to produce a hydrocarbon product, wherein the hydrocarbon product comprises a gas phase and a liquid phase; (b) separating the hydrocarbon product into a hydrocarbon gas stream and a hydrocarbon liquid stream, wherein the hydrocarbon gas stream comprises at least a portion of the gas phase of the hydrocarbon product, wherein the hydrocarbon liquid stream comprises at least a portion of the liquid phase of the hydrocarbon product, wherein the hydrocarbon liquid stream comprises one or more chloride compounds in an amount of less than 100 ppmw chloride, based on the total weight of the hydrocarbon liquid stream, and wherein the hydrocarbon liquid stream is characterized by a viscosity of less than 400 cP at a temperature of 300 °C; (c) conveying at least a portion of the hydrocarbon liquid stream to a first hydroprocessing unit to produce a first treated hydrocarbon liquid stream and a first hydroprocessing unit gas product stream, wherein the first treated hydrocarbon liquid stream is characterized by a boiling point that is lower than a boiling point of the hydrocarbon liquid stream, wherein the first treated hydrocarbon liquid stream is characterized by a viscosity that is lower than the viscosity of the hydrocarbon liquid stream, and wherein the first treated hydrocarbon liquid stream is characterized by a chloride content of less than 10 ppmw chloride, based on the total weight of the first treated hydrocarbon liquid stream; and (d) spraying at least a portion of the first treated hydrocarbon liquid stream as droplets into a fluid catalytic cracker operated in a hydropyrolysis mode to produce a second treated hydrocarbon liquid stream and a fluid catalytic cracker gas product stream, wherein the droplets are characterized by an average droplet size of less than 300 microns, wherein the second treated hydrocarbon liquid stream comprises one or more chloride compounds in an amount of less than 10 ppmw chloride, based on the total weight of the second treated hydrocarbon liquid stream, and wherein the second treated hydrocarbon liquid stream is characterized by an aromatics content of greater than 20 wt.% aromatics, based on the total weight of the second treated hydrocarbon liquid stream.