Process and apparatus for multistage thermal treatment of rubber waste, in particular scrap tires

US8865112B2 · kind B2 · utility

Assignee

• Pyrolyx AG · DE

Inventors

• Fikret Dulger · Wien, AT
• Niels Raeder · Birkenfeld, DE

Key dates

• Filing date: Sep 25, 2009
• Grant date: Oct 21, 2014
• Expiry date: Sep 25, 2029

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/143
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A process for multistage thermal treatment of rubber waste, in particular scrap tires, is proposed. The process comprises several steps of transferring a product granulate of rubber waste into three different sequencing heating zones of a reactor (10). In the heating zones (11a, 11b, 11c) the product granulate is heated at a first temperature between 100° to 200° C., preferably 150° to 180° C., then at a second temperature between 200° to 350° C. and at a third temperature between 300° to 600° C. The temperature is maintained until such time that no further oil is emitted within the respective heating zone. As a final step, the product granulate is removed from the reactor (10) and the desirable solid materials are separated.