Back to results
US 8,802,906 B2Granted
Method of recovering energy
OwnerDavid Brent Thompsoninventor
Life of this patent
Estimating the term…
Abstract
Described is an apparatus and method 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.
Claims4
A method of recovering oil from tires, comprising:
- providing a supply of automobile tires;
- axially aligning a quantity of said tires so that they form a cylinder made of a plurality of tires;
- compressing said bundle and banding said bundle in its compressed state through use of at least one metal strap, to form a bundle of said axially aligned tires;
- placing one or more bundles in a receptacle;
- placing one or more receptacles in a pyrolysis chamber;
- sealing said pyrolysis chamber;
- heating said pyrolysis chamber, receptacle and bundle to a temperature of 500-1300° F. (260-704° C.), thereby charring said bundle and releasing a vapor;
- ventilating said vapor from said pyrolysis chamber into a condensation system comprising a plurality of condensation plates which define a circuitous exit pathway for gaseous vapors produced from said pyrolysis chamber and which also define an oil drainage pathway to a condensation tube, through use of a ventilation system;
- condensing oil from said vapor in said condensation system;
- collecting said oil;
- compressing and storing said remaining vapor, with the system resulting in up to 50% oil recovery by weight and a net positive energy production of natural gas cooling the pyrolysis chamber, receptacle and bundle after heating to about 150° F.;
- removing the charred remnants of the bundle from the receptacle;
- and
- separating the charred remnants of the bundle into carbon and metal.
11 more elements
Dependencies are inferred from the claim text.