초록 ▼

A process for economically recovering char, oil and fuel gas from vehicle tires is disclosed, for either whole tires or physically fragmented tires. The tires may be washed to remove dirt and road film. The tires are dried and preheated with super-heat steam. The hot tires are pyrolyzed to partially

A process for economically recovering char, oil and fuel gas from vehicle tires is disclosed, for either whole tires or physically fragmented tires. The tires may be washed to remove dirt and road film. The tires are dried and preheated with super-heat steam. The hot tires are pyrolyzed to partially devolatize a major portion of the hydrocarbons and produce a char that can be separated from the steel and fiberglass. The char may be subsequently pyrolyzed with microwaves that elevate the tire temperature and devolatize the remaining hydrocarbons from the char as gas. The hot gases are cooled and partially condensed. The uncondensed gas is used as fuel. The condensed oil is sent to storage. The solid residue from the tire pyrolysis is substantially char, fiberglass and steel. The char is mechanically separated from the glass and steel. Alternately, the char and the glass and steel are separated by dumping the hot mixture into a water quench tank. The mixture is cooled. The char floats to the water surface and is removed. The glass and steel sink to the bottom of the tank and are removed separately. The char may be sold or burned or milled to break down agglomerates and subsequently pelletized and bagged. The steel and glass are discarded as trash.

대표청구항 ▼

A process for manufacturing char and hydrocarbons from discarded used tires, comprising: introducing the substantially whole tries into a reactor; pyrolyzing the substantially whole tires in a reaction chamber continuously at a temperature and pressure and for a reaction time sufficient to cause the

A process for manufacturing char and hydrocarbons from discarded used tires, comprising: introducing the substantially whole tries into a reactor; pyrolyzing the substantially whole tires in a reaction chamber continuously at a temperature and pressure and for a reaction time sufficient to cause the tires to dissociate into a vapor and a solid phase; said pyrolyzing step including directly heating the tires with a radient heat source at temperatures of 1000°to 3000°F.; producing char from the solid phase; and processing said vapor phase to produce hydrocarbons.