Chemical recycling of cycloolefin-copolymers (COC) in a fluidized-bed reactor |
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| Institution: | 1. Department of Environmental Health Sciences, State University of New York at Albany, School of Public Health, United States;2. Department of Epidemiology and Biostatistics, State University of New York at Albany, School of Public Health, United States;3. Department of Environmental Health Sciences, Columbia University Mailman School of Public Health, 722 W 168th St, 12th Floor, New York, NY 10032, United States;4. Columbia Center for Children''s Environmental Health, Columbia University Mailman School of Public Health, 722 W 168th St, 12th Floor, New York, NY 10032, United States;5. Harvard School of Public Health, 401 Park Drive, Landmark Center 4th Floor West, Room 406A, Boston, MA 02215, United States |
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| Abstract: | The pyrolysis of cycloolefin-copolymers (COC) in a fluidized-bed reactor was studied under various parameters like pyrolysis temperature, fluidizing gas or residence time. It was proven to reduce the undesired tar fraction to a minimum of around 10 wt.% and to obtain up to 44 wt.% valuable gases and 45 wt.% aromatic light oils with a reactor temperature of 700 °C.Furthermore, the mechanism of the pyrolytic degradation has been analyzed to determine if the comonomer 2-norbornene can be obtained by pyrolysis. In all experiments, only traces of around 0.05 wt.% were detected. It was learned that 2-norbornene is not stable enough to resist drastic pyrolysis conditions; rather it undergoes a Retro–Diels–Alder reaction to form ethene and cyclopentadiene. |
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