Recovery of aliphatic hydrocarbons

Process for recovery of aliphatic hydrocarbons from a liquid hydrocarbon feedstock stream, said process comprising the steps of:

• a) pyrolyzing plastics to produce a hydrocarbon product comprising a liquid hydrocarbon feedstock stream;
• b) mixing at least a portion of the liquid hydrocarbon feedstock stream with a solvent to dissolve the liquid hydrocarbon feedstock stream in the solvent and produce;
• c) cooling the liquid mixture obtained in step b) to a temperature in a range of +5° C. to −30° C. to obtain wax crystals in the liquid mixture;
• d) separating the wax crystals from the cooled liquid mixture obtained in step c) to produce a wax comprising aliphatic hydrocarbons and a dewaxed liquid mixture comprising the solvent, heteroatom containing polar components and aromatic hydrocarbons, wherein the wax comprising aliphatic hydrocarbons comprises a carbon+hydrogen C/H content of >99.9 wt % and oxygen content of <0.1 wt %;
• and
• e) separating the solvent from the dewaxed liquid mixture obtained in step d) and optionally recycling the separated solvent to step b),
• wherein the liquid hydrocarbon feedstock stream comprises aliphatic hydrocarbons, at least 0.5 wt. % of heteroatom containing polar components, and at least 5 wt. % of aromatic hydrocarbons, and
• wherein the heteroatom containing polar components comprise synthetic heteroatom containing organic compounds.