Process and apparatus for multistage thermal treatment of rubber waste, in particular scrap tires
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United States of America Patent
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Oct 21, 2014
Grant Date -
Mar 14, 2013
app pub date -
Sep 25, 2009
filing date -
Sep 25, 2009
priority date (Note) -
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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.
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