The invention relates to a system for the pyrolysis of waste material, in particular to the depolymerization of comminuted old tire material, and for producing an output material which can be further processed to form recovered carbon black. The system comprises at least one rotary kiln reactor, a quenching unit and burner unit. The rotary kiln reactor has a reactor drum, rotating during operation about a longitudinal axis, the interior of which has at least one heating zone, a reaction zone and a degassing zone. The burner unit is designed to burn pyrolysis gas to form a heating gas and to generate a heating gas flow through the heating jacket space, and is for this purpose connected to the heating jacket housing by way of heating gas lines.

The present invention relates to a process for the processing and/or purification of carbon black comprising the steps of: a) providing carbon black containing impurities b) providing an aqueous fluid comprising a nitrogen hydride c) providing an alkali metal hydroxide and/or an alkali metal d) contacting the mixture of step a), the fluid of step b) and the alkali metal hydroxide and/or alkali metal of step c) e) subjecting the composition obtained in step d) to an elevated temperature in the range of 80 to 240° C. and an elevated pressure in the range of 5 to 50 bar f) separating a carbonaceous solid from the composition obtained in step e). The present invention further relates to the use of a nitrogen hydride as a dispersing agent for producing and/or stabilizing an aqueous suspension.

A method for purifying carbon black obtained from pyrolysis of used tires by solvent extraction involves removal of residues of pyrolyzed rubber deposited on the surface of the carbon black obtained from the pyrolysis and the polycyclic aromatic hydrocarbons contained therein. The method also involves extracting zinc from the purified carbon black using carboxylic acids of natural origin.

A method and precursor for making carbon fibers and the like comprising carbon black modified with at least one cyclic compound promoter. A source of the carbon black may be recycled materials such as recycled tires or recycled plastics. The carbon black is modified by attaching at least one cyclic compound promoter to the outer periphery of the carbon black.

One variation for a method for converting tires into pelletized, recovered carbon black includes: shredding a set of tires into a volume of tire rubber segments, the set of tires selected from a group comprising an agricultural tire, a commercial vehicle tire, and a passenger tire; in a pyrolytic reactor, thermally depolymerizing the volume of tire rubber segments into a volume of carbonaceous material; comminuting the volume of carbonaceous material; removing from the volume of carbonaceous material agglomerates larger than the maximum agglomerate diameter; within a mixer, mixing the volume of carbonaceous material with a binding agent over a first interval, the mixer inducing formation of a set of pellets of a range of pellet diameters; drying the set of pellets within a dryer to a particular moisture content; and removing from the set of pellets a first subset of pellets larger than a maximum pellet size.

The present invention relates to recycling tires and the like utilizing a microwave service controlling the pressure from such a process enables a more even temperature and helps prevent the buildup of explosive gas.

A pyrolysis device and process to convert a carbonaceous feedstock to a carbon solid and pyrolysis gas, and processes for refining the resulting carbon solid and pyrolysis gases. The pyrolysis process may include introducing a carbonaceous feedstock into a pyrolysis processor having a vertical rotary tray processor, heating the feedstock to a temperature above about 790° F., removing a carbon material from a bottom of the pyrolysis processor, and removing a pyrolysis gas from a top of the pyrolysis processor.

A heavy duty pneumatic tire comprises an innerliner including a laminated first liner and second liner; a thickness of the first liner being 1.2 to 1.9 mm; a thickness of the second liner being 1.2 to 1.6 mm; a total thickness of the first and second liners being 2.4 to 3.4 mm; the first and second liners being made of rubber compositions 1 and 2; rubber composition 1 containing 5 to 50 parts by weight of a plate-like inorganic filler having a particle size of 4.9 to 7.5 μm and an aspect ratio of 3.0 to 7.0 per 100 parts by weight of a diene rubber containing 50 to 100 wt. % of butyl rubber; and rubber composition 2 containing 0.05 to 0.5 parts by weight of an organic metal salt as metal content per 100 parts by weight of a diene rubber containing at least 50 wt. % of natural rubber.

A method and precursor for making carbon fibers and the like comprising carbon black modified with at least one cyclic compound promoter. A source of the carbon black may be recycled materials such as recycled tires or recycled plastics. The carbon black is modified by attaching at least one cyclic compound promoter to the outer periphery of the carbon black.

A pyrolysis plant including: a) an exhaust heated feeder; b) a pyrolysis reactor; c) a rotary screen cleaning tower; d) an exhaust heat fuel cleaner; e) a carbon refiner; and f) a safety burner tower.