Process for treating char from recycled plastics

A process for recovering carbon contained in a char (solid carbonaceous residue) from pyrolysis of mixed plastic waste or secondary raw material which is the end product of the recycling and/or treatment of plastic wastes, or a char from pyrolysis of mixed plastics, through the production of CO, and optionally synthesis gas, said process including the following steps:

• (A) heating said char in a gasification reactor and in the presence of carbon dioxide to reach a prefixed temperature comprised in a range lower than 950° C. and higher than 600° C.;
• (B) continue heating said char in said temperature range, in the presence of CO2, for a prefixed residence time of said char in said reactor producing an outflow gas stream (effluent) comprising CO in addition to unreacted CO2, and possibly H2, and
• (C) sending at least a part of the gas stream (effluent) leaving the reactor comprising CO, unreacted CO2, and optionally H2, to at least one subsequent operating unit selected from a unit for separating CO from CO2, a direct use unit of said outflow stream or to a storage unit.