Journal
CHEMSUSCHEM
Volume 14, Issue 19, Pages 4214-4227Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cssc.202002667
Keywords
flash pyrolysis; kinetics; polyethylene; pyrolysis; recycling
Funding
- ExxonMobil Chemical Company
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The continued need for effective solutions for processing and recycling polymer wastes has led to the development of a modified PHASR system for measuring and visualizing plastic pyrolysis, demonstrating fast heating and cooling times and stable temperature control.
The continued need for plastics necessitates an effective solution for processing and recycling polymer wastes. While pyrolysis is a promising technology for polyolefin recycling, an experimental apparatus must be designed to measure the intrinsic kinetics and elucidate the chemistry of the plastics pyrolysis process. To resolve this issue, a modified Pulse-Heated Analysis of Solid Reactions (PHASR) system was designed, constructed, and evaluated for the purposes of polyolefin pyrolysis. Experimental results demonstrated that the new PHASR system is capable of measuring the millisecond-resolved evolution of plastic [e. g., low-density polyethylene (LDPE)] pyrolysis products at a constant temperature. The PHASR system was shown to be capable of producing a repeatable, fast heating time (20 ms) and cooling time (130-150 ms), and of maintaining a stable temperature during reaction. A second, Visual PHASR system was developed to enable high-speed photography and visualization of the real-time pyrolysis of LDPE.
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