Process for recovering carbon black and hydrocarbons from used tires

A process for manufacturing carbon black from discarded tires, comprising:

• disintegrating the tires to reduce the tires to fragments;
• pyrolyzing the fragments in a pyrolysis reaction vessel at a temperature and pressure and for a reaction time sufficient to cause the fragments to dissociate into a vapor phase and a solid phase;
• condensing a high boiling point condensate containing reactor effluent particulate from a portion of the vapor phase as a process stream;
• feeding at least a first portion of such high boiling point condensate process stream containing effluent particulate from the reactor obtained by said condensing of a portion of the vapor phase back into the pyrolyzing solid phase;
• fractionating a second portion of the vapor phase to produce hydrocarbon fractions;
• milling the pyrolyzed solid phase after it leaves the pyrolysis reaction vessel;
• wherein said step of milling includes--
• sweeping an air swept rolling mill with a flow of air to produce an effluent air stream containing carbon black particles and trash;
• passing the effluent air stream from the rolling mill through a mechanical separator to produce a waste stream of trash particles and product air stream containing carbon black particles;
• passing said product air stream through a cyclone separator to remove 80-90% of the relatively large carbon black particles and to produce a fine product air stream containing relatively finer carbon black particles.

A process for manufacturing carbon black from discarded tires, comprising:

• disintegrating the tires to reduce the tires to fragments;
• pyrolyzing the fragments in a pyrolysis reaction vessel at a temperature and pressure and for a reaction time sufficient to cause the fragments to dissociate into a vapor phase and a solid phase;
• milling the pyrolyzed solid phase after it leaves the pyrolysis reaction vessel, wherein said step of milling includes--
• sweeping an air swept rolling mill with a flow of air to produce an effluent air stream containing carbon black particles and trash;
• passing the effluent air stream from the rolling mill through a mechanical separator to produce a waste stream of trash particles and product air stream containing carbon black particles;
• passing said product air stream through a cyclone separator to remove 80-90% of the relatively large carbon black particles and to produce a fine product air stream containing relatively finer carbon black particles.

A process for manufacturing carbon black and hydrocarbons from discarded tires, comprising:

• disintegrating the tires into fragments less than 11/2 inches by 11/2 inches;
• pyrolyzing the fragments in a pyrolysis reaction vessel at between 750.degree. and 1800.degree. Fahrenheit oxygen limited hydrocarbon vapor atmosphere at between 1-20 PSIA for between 90 and 3 minutes to produce a solid phase and a vapor phase;
• producing a separate high boiling point condensate process stream from a portion of said vapor phase in said reaction vessel;
• refluxing a portion of said condensate back into said fragments;
• fractionating a second portion of said vapor phase to produce oil and gas;
• milling the pyrolyzed solid phase after it leaves the pyrolysis reaction vessel, wherein said step of milling includes--
• sweeping an air swept rolling mill with a flow of air to produce an effluent air stream containing carbon black particles and trash;
• passing the effluent air stream from the rolling mill through a mechanical separator to produce a waste stream of trash particles and product air stream containing carbon black particles;
• passing said product air stream through a cyclone separator to remove 80-90% of the relatively large carbon black particles and to produce a fine product air stream containing relatively finer carbon black particles.