Method of processing tyres into pyrolytic oil quality by introducing a co-feed

A method for co-pyrolysis of a polyolefin and a rubber containing material comprising:

• operating at least a pyrolysis stage of a pyrolysis reactor at an operating temperature at or above the temperature at which pyrolysis of both the polyolefin and the rubber containing material commences and up to about 600° C. under a substantially inert atmosphere;
• feeding a mixture comprising the polyolefin and the rubber containing material into the pyrolysis reactor;
• co-pyrolysing the mixture in the pyrolysis reactor to produce a pyrolysis gas comprising volatile pyrolysis products of the polyolefin and the rubber, wherein the volatile pyrolysis product of the olefin comprises at least a short chain olefin and the volatile product of the rubber comprises at least a diene;
• facilitating a gas phase reaction between the short chain olefin and the diene to produce a volatile gas comprising single-ring aromatic hydrocarbons;
• and
• wherein a mass ratio of polyolefin to rubber containing material in the pyrolysis reactor is selected to produce an excess of the short chain olefin relative to the diene.