Reactor assembly

A reactor assembly for heating plastic material comprising:

• a reactor vessel comprising a central axis;
• a furnace arranged to heat the reactor vessel to a temperature in excess of 350° C.;
• and
• an agitator mounted within the reactor vessel, the agitator comprising:
• one or more blade(s) distal from the central axis for mixing contents of the reactor vessel in use;
• and
• one or more wearing part(s) detachably mounted to the blade(s) to extend from the blade(s) for engaging with and removing char from the reactor vessel, wherein the wearing part(s) are spaced a first distance from an internal surface of the reactor vessel;
• wherein the wearing part(s) are adjustable for adjusting either or both of:
• the radial position of the wearing part(s) on the blade(s);
• or
• the axial position of the wearing part(s) on the blade(s).