Burner system for waste plastic fuel

A burner system for waste fuel, comprising:

• a combustion unit having a plurality of combustion chambers arranged concentrically around a single rotatable feed mechanism, wherein the individual ones of said combustion chambers are in fluid communication with one another;
• wherein said plurality of combustion chambers are further arranged radially one after the other so that the combustion unit has an overall axial length about equal to the length of an individual combustion chamber;
• wherein the innermost one of said combustion chambers is in communication with the feed mechanism, whereby waste fuel is fed into the combustion chambers by the feed mechanism wherein said single rotatable feed mechanism directs the waste fuel along a fuel consumption path through the individual ones of said plurality of combustion chambers;
• wherein said plurality of combustion chambers include a first combustion chamber, a second combustion chamber, and a third combustion chamber;
• wherein said first combustion chamber being arranged to receive the waste fuel from said feed mechanism;
• an outlet for discharging exhaust materials from said third combustion chamber;
• and wherein said first combustion chamber, said second combustion chamber and said third combustion chamber have approximately like axial extents;
• and wherein each individual one of said plurality of combustion chambers includes an upstream combustion air inlet orifice.