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1. (WO2019033202) HYBRID PROCESSING OF WASTE MATERIAL
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WE CLAIM:

1. A system for processing rubber material, the system comprising:

a rubber material receiver for accepting the rubber material;

a pre-heating unit adapted for the rubber material passing through comprising a plurality of heating elements that heat the rubber material to between 100 to 350C in an oxygen depleted atmosphere;

a microwave unit adapted for receiving the pre-heated rubber material comprising microwave magnetrons, which radiate the pre-heated rubber material in an oxygen depleted environment until the pre-heated rubber is substantially reduced to a carbonaceous material having a volatile content of below 5% and more preferably below 2%;

a cooling conveyor that receives processed rubber material from the microwave unit and cools the material in an oxygen depleted environment; and

one or more conveyors for transporting the rubber material from the rubber material receiver into and through the pre-heating unit and into and through the microwave unit to the cooling conveyor.

2. The system of claim 1 wherein the rubber material comprises tires, cut tires, broken tires, shredded rubber, chipped rubber, or crumb.

3. The system of claim 1 further comprising a plurality of isolation units, isolating the atmosphere of at least the pre-heating unit, microwave unit and the cooling conveyor from the ambient atmosphere wherein an inert gas, preferably nitrogen, is introduced into the pre-heating unit, microwave unit and cooling conveyor to create the oxygen depleted environment.

4. The system of claim 1 wherein the one or more conveyors for transporting the rubber material comprises a single conveyor for transferring material into the preheating unit through the pre-heating unit, out of the -pre-heating unit, into the microwave unit and out of the microwave unit to the cooling conveyor.

5. The system of claim 1 further comprising a purge system attached to the preheating unit and microwave unit that extracts any vapours and gases emitted by the material in the pre-heating and microwave units, the extracted vapours and gases are cooled and condensed.

6. The system of claim 1 further comprising a control valve controlling the rate of rubber material entering the pre-heating unit.

7. A method for processing rubber material comprising:

receiving rubber material, the rubber material comprising cut tires, shredded, crumbled, or chipped rubber;

pre-heating the rubber material in an oxygen depleted atmosphere to between 100 to 350C;

conveying the pre-heated rubber material to a microwave unit;

microwaving the pre-heated rubber material in an oxygen depleted environment until the pre-heated rubber is substantially reduced to a carbonaceous material having a volatile content of below 5% and more preferably below 2%; and

cooling the processed rubber material in a cooling conveyor below 200C, preferably below lOOC.

8. The method of claim 7 wherein the rubber material comprises tires, cut tires, broken tires, shredded rubber, chipped rubber, or crumb.

9. The method of claim 7 further comprising isolating the atmosphere of the preheating unit from the ambient atmosphere and isolating the atmosphere of the microwave unit from the ambient atmosphere.

10. The method of claim 7 wherein conveying the pre-heated rubber material to a microwave unit comprises using a single conveyor to transfer rubber material while pre-heating the material, to the microwave unit and while microwaving the pre-heated rubber material.

11. The method of claim 9 further comprising isolating the atmosphere of the preheating unit from the atmosphere of the microwave unit.

12. The method of claim 9 wherein an inert gas, preferably nitrogen, is introduced into the pre-heating unit, microwave unit and cooling conveyor to create the oxygen depleted environment.

13. The method of claim 7 further comprising extracting any vapours and gases emitted by the pre-heating and microwave units, and cooling and condensing the extracted vapours and gases.

14. The method of claim 7 further comprising controlling the rate of rubber material entering the pre-heating unit using a control valve.