Process for conversion of waste plastics into chemicals

A process for the conversion of plastics to chemicals comprising in this order the steps of:

• (i) providing a plastics stream (A) comprising polyvinyl chloride (PVC);
• (ii) supplying the plastics stream (A) and a solvent (S) to a reactor vessel (1);
• (iii) subjecting the plastics in the reactor vessel to a temperature of ≥250° C. to <350° C. under applying a vacuum or using an inert gas sweep, and evacuating a generated hydrogen chloride (B) from the vessel, wherein the PVC is partially dechlorinated to form a plastics stream (C) comprising partially unsaturated PVC;
• (iv) removing the plastics stream (C) comprising partially unsaturated PVC from the reaction vessel;
• (v) separating in a separation system (2) at least a part of the partially unsaturated PVC from the plastics stream to form a dechlorinated plastics stream (D) comprising the solvent;
• (vi) combining the stream (D) with an atmospheric residue stream (N) to obtain a stream (O);
• (vii) supplying the stream (O) to a vacuum distillation unit (3) to produce a vacuum gas oil stream (Q) and a vacuum residue stream (P) that meets a chlorine specifications for a coker unit (4);
• and
• (viii) providing the stream (P) to the coker unit, and subjecting the coker unit (4) to such conditions to obtain a liquid coker stream (I) and a solid coke product (L).