Furnaces – Process – Incinerating refuse
Reexamination Certificate
1999-07-30
2001-08-28
Lazarus, Ira S. (Department: 3743)
Furnaces
Process
Incinerating refuse
C110S1010CD, C110S246000, C110S255000, C432S105000, C432S113000, C432S117000, C432S118000
Reexamination Certificate
active
06279492
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present apparatus relates to the disposal of tires through combustion. It has been shown that tire combustion is possible by using stationary incinerators. In such devices, tires are not mixed as they burn and the solid by-products of combustion are gathered in collection ducts. In contrast, the present apparatus differs from previous methods of tire combustion in that the entire combuster rotates. Tires are tumbled and retained in the primary burn zone for as long as possible. After tires have been reduced to ash, solid waste is forwarded to the exhaust area using a series of baffles, I.e. flights. Once the hot gases and solid debris have left the exhaust area, they enter the afterburner, where complete burning of the remaining volitiles is performed using a secondary enrichment of oxygen.
2. Prior Art
The U.S. Pat. No. 3,946,680; U.S. Pat. No. 4,565,138; U.S. Pat. No. 4,551,051; U.S. Pat. No. 4,895,083; and U.S. Pat. No. 4,180,004 disclose various apparatuses used for combustion of tires. This apparatus; however, differs from previous efforts at tire combustion in several ways.
U.S. Pat. No. 4,551,051 and U.S. Pat. No. 4,565,138, illustrate an inclined ramp and a ram, respectively, for loading tires into the primary burn zone, U.S. Pat. No. 4,180,004 teaches the step of shredding the tires before delivery to the combuster.
U.S. Pat. No. 4,895,083; U.S. Pat. No. 4,565,138; and U.S. Pat. No. 3,946,680, burn the tires as a resting pile.
SUMMARY OF THE INVENTION
It is the object of the invention to provide a means for disposing of tires by combustion using a rotating burn chamber.
A principle objective of this invention is to provide a means for removing the solid by-products of the tire combustion from the primary burn area by using a series of inclined baffles, resembling the threads of an internal lead screw, which carry the debris toward the exit of the combuster at a rate slow enough to allow thorough combustion.
Another important objective of this invention is to provide a method for loading the tires into the combuster using an airlock with an automated lid.
Another important objective of this invention is to provide a method for loading tires into the combuster using a sealed airlock which reduces the ingress of air and the egress of the volatile gases through the loading opening and places the tires into the combuster in a controlled manner.
Another important objective of this invention is to provide a method for burning tires based on a rotating combuster that tumbles the tires as they burn to ensure thorough and rapid combustion.
Another important objective of this invention is to provide a means of enhancing tire combustion using a preheated draft.
Another important objective of this invention is to provide a means for controlling the intake draft using the thermal expansion of the rotary combustion chamber to activate a draft control valve.
Another important objective of this invention is to provide shielded draft entry to prevent debris from back flowing into the draft air ducts.
Another important objective of this invention is to provide a means for preventing tire refuse from leaving the burn area prematurely by using a ramp in the rotary combustion chamber.
Other important objectives of this invention include preheating the draft air to promote rapid combustion in the primary burn zone and the use of a tire fueled afterburner to eliminate remaining volatiles escaping from the primary burn zone.
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Branscome James C.
Larson Jack B.
Atlantic Pacific Energy Systems, Inc.
Ciric Ljiljana V.
Lazarus Ira S.
Rosenbaum C. Fred
Wright Bryan D.
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