Distillation: apparatus – Apparatus – Systems
Patent
1992-07-10
1995-07-25
Jones, W. Gary
Distillation: apparatus
Apparatus
Systems
202112, 48 76, 48111, 201 25, 201 34, 201 36, C10B 104
Patent
active
054358906
ABSTRACT:
A preferred embodiment of the apparatus 10 for recycling used automobile rubber tires is described in which small pieces of rubber tires are progressively fed into a vertical reactor 14 of the counter-flow type in which the material progressively descends downward through the reactor 14 with process gases passing upward through the downwardly descending material to decompose and volatilize the rubber material. Oxygen-bearing gas is injected into the reactor to burn a portion of the rubber carbon to generate hot combustion gases that ascend upwardly to pyrolitically decompose the rubber pieces, and to volatilize such material. The amount of oxygen is controlled in an oxygen-deficient manner to maintain the temperature in the combustion zone at a temperature of less than 500.degree. F. The gases and volatilized rubber materials and oils are removed from the reactor at a temperature of approximately 350.degree. F. at an elevation below the top layer of the rubber pieces in a high velocity stream to maintain the oils entrained in the air stream. The air stream is directed into condensers for condensing the rubber process oils. The raw rubber process oils are subdivided to obtain a residue heavy fraction rubber oil material having a flash point of greater than 340.degree. F. and greater at one atmosphere and a boiling point of greater than 450.degree. F. at 20 mm Hg.
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De Simone Mark
Jones W. Gary
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