System for recovering oil from used automobile tires
View Patent ↗Described is an apparatus for recovery of energy and by-products from automobile and truck tires. The tires are heated in an oxygen poor environment, and the off gases are condensed to recover a liquid oil product and compressible natural gas. The tires are reduces to ash and steel, both of which can be feed streams for other processes. The apparatus includes a condenser with cooled plates, and oil recovery structures.
1. An energy recovery device for recovering oil and energy from vehicle tires, comprising:
one or more receptacles for holding vehicle tires, configured for insertion into a pyrolysis chamber;
said pyrolysis chamber configured to be air tight, and including a door with an air tight seal;
a heat source for heating said pyrolysis chamber and one or more receptacles containing said vehicle tires;
a ventilation system, comprising a condenser, one or more liquid cooled condensation plates, and a condenser tube, and a gas recovery system; wherein said tires in said one or more receptacles are heated in said pyrolysis chamber in the absence of incoming oxygen, to produce a gaseous vapor which exits the pyrolysis chamber via the ventilation system, and from which is condensed oil on said condensation plates, and uncondensed hydrocarbons are captured as a flammable gas, with said tires reduced to carbon ash and steel;
with said condenser comprising a plurality of spaced apart hollow and parallel condensation plates thermally connected to an inlet and an outlet cooling liquid manifold, with said condenser plates mounted at an angle of less than 90 degrees from horizontal.
2. The energy recovery device for recovering oil and gas from vehicle tires of claim 1 , in which said condensation plates are cooled by a liquid coolant further include an air passage with said air passages and condensation plates forming a circuitous exhaust route between said condensation plates for said gaseous vapor from said pyrolysis chamber.
3. The energy recovery device for recovering oil and gas from vehicle tires of claim 1 , which further includes a gas collection and compression system, for collecting and compressing gaseous vapors which exit said condenser and still contain hydrocarbons.
4. The energy recovery device for recovering oil and gas from vehicle tires of claim 1 , in which said heat source is configured to heat said pyrolysis chamber and one or more receptacles containing tires to a temperature of 500-1300° F. (260-704° C.), thereby charring said bundle and releasing a vapor.
5. The energy recovery device for recovering oil and gas from vehicle tires of claim 1 , in which said receptacle further comprises wheels and rails for entering and exiting said pyrolysis chamber.
6. The energy recovery device for recovering oil and gas from vehicle tires of claim 1 , in which said receptacle further comprises a semi-cylindrical body, and is configured for holding one or more cylindrical bundles of tires.
7. The energy recovery device of claim 2 which said condenser plates comprise planar arrays of coolant filled tubes.
8. The energy recovery device of claim 7 which further comprises a plurality of condenser plates attached to said planar groups of tubes, with each planar group of tubes having an attached upper condenser plate, forming a plurality of condenser plate assemblies with cooling tubes covered at the top of said tubes by said upper condenser plate.
9. The energy recovery device of claim 8 in which said upper condenser plates terminate before contacting either said inlet or said outlet manifolds in an alternating fashion, forming a serpentine route for gasses to pass through said condenser.
10. The energy recover device of claim 1 , in which said vehicle tires further comprise one or more units of baled vehicle tires, with said tires bound together in one or more groups by metal banding.