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5. Pyrolysis
This technique is mainly concerned with the treatment of end-of-life tires. It involves treating waste rubber (ELT in particular) at high temperature (350°C – 750°C) in the absence of oxygen. Three types of product are obtained, the proportions of which vary according to the pyrolysis temperature:
a gas ;
an oil ;
a solid.
The gas, made up of various hydrocarbons, is used to produce the heat or electrical energy required for the pyrolysis process.
Oil is made up of a hundred different products. It can be used as a fuel (similar to kerosene). Trials have been conducted to use this oil as a plasticizer in a rubber compound. It contains interesting products, in particular limonene (an isoprene dimer), but recovery by...
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Pyrolysis
Recycled rubber for cutting thermoplastic polymers
Bibliography
Patents
CHEMPLAST – GUMTEC – EP 1362 681 – 04/06/2002
GOODYEAR – Novotny – US 4104205 (1978)
HUNT – US 5578700 (1996)
VREDENSTEIN – US 5425 904 -05/12/90
MICHELIN – EP 2337693 – 06/29/2011
LEV-GUM LTD – US 6831109 – 04/26/2001
ZHANG YUNCAN – US 20090082475 – 09/22/2008
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ALFYMA (France)
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BLACK BEAR CARBON (Netherlands)
BRIDGESTONE (Japan)
BTCR (Netherlands)
CARBON CLEAN TECH PYROLYX (Germany)
COLLET ENVIRONNEMENT (France)
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