Method and apparatus for recovering constituents from discarded

Details Method and apparatus for recovering constituents from discarded Method and apparatus for recovering constituents from discarded

1996-07-10

1998-02-24

Bennett, Henry A.

Furnaces

Process

Incinerating refuse

110229, 110257, 110109, 110110, F23G 512

Patent

active

057202320

ABSTRACT:
Discarded rubber tires for reclamation and recovery of the constituents therein and/or environmentally safe disposal are transferred from a pan feeder system into a hopper and transferred by an auger into a pyrolysis chamber. The pan feeder system excludes air or oxygen from passing through the hopper and auger into the pyrolysis chamber. Tire pieces from the pan feeder system are transferred by an auger through the pyrolysis chamber which is heated to a temperature between 350.degree. and 650.degree. F. The pyrolysis chamber includes a vapor recovery system for removing the vapors and maintaining a vacuum in the pyrolysis chamber. The vapors are withdrawn through a heat exchanger and into a liquid/gas separator where the condensed liquids are removed and the gas is recycled for fuel or other disposition. The solid residue from the tire pyrolysis is transferred by a closed auger to a closed bin. A pressure sensitive switch on the bin starts and stops the motor on an auger to discharge the solid residue for further processing, and thus maintains a minimum level of solid residue in the bin which acts as a seal to prevent air or oxygen from entering the pyrolysis chamber through the closed bin and closed auger. The solid residue is primarily carbon and steel which may be further separated by suitable equipment.

REFERENCES:
patent: 2331907 (1943-10-01), Harrington
patent: 3559823 (1971-02-01), Ostrin
patent: 3729105 (1973-04-01), Huebler et al.
patent: 4401402 (1983-08-01), Casperson
patent: 4602572 (1986-07-01), Giaier et al.
patent: 5411714 (1995-05-01), Wu et al.

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