Process for recovering carbon black and hydrocarbons from used t

Details Process for recovering carbon black and hydrocarbons from used t Process for recovering carbon black and hydrocarbons from used t

1978-02-15

1981-02-10

Vertiz, O. R.

Chemistry of inorganic compounds

Carbon or compound thereof

Elemental carbon

201 25, 585241, C01B 3102, C09C 148

Patent

active

042501580

ABSTRACT:
The invention is a process for economically recovering carbon black, tar, oil and fuel gas from used tires. Used tires are physically sliced and fragmented. The fragments are pyrolized in an oxygen-limited, hydrocarbon vapor at subatmospheric pressure while being refluxed with process tar condensate. Vapor phase products of the pyrolysis are fractionated into tar, oil and fuel gas. The fuel gas can be compressed and burnt to provide process heat. Solid phase pyrolysis products are stripped of trash and milled to carbon black in an air swept roller mill. Carbon black is mechanically separated from the effluent air stream of the roller mill and formed into pellets that are dried in a series multi-stage fluid bed dryer.

REFERENCES:
patent: 3772242 (1973-11-01), Liska et al.
patent: 3823224 (1974-07-01), Laman et al.
patent: 3966487 (1976-06-01), Crane et al.
patent: 3978199 (1976-08-01), Maruhnic et al.
patent: 4038100 (1977-07-01), Haberman

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