Zolghadr Ali, Sidhu Nathan, Mastalski Isaac, Facas Greg, Maduskar Saurabh, Uppili Sundararajan, Go Tony, Neurock Matthew, Dauenhauer Paul J
University of Minnesota, Department of Chemical Engineering & Materials Science, 421 Washington Ave. SE, Minneapolis, MN, 55455, USA.
ExxonMobil Chemical Company, 5200 Bayway Drive, Baytown, TX, 77520, USA.
ChemSusChem. 2021 Oct 5;14(19):4214-4227. doi: 10.1002/cssc.202002667. Epub 2020 Dec 30.
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.
对塑料的持续需求使得有必要找到一种有效的方法来处理和回收聚合物废料。虽然热解是聚烯烃回收的一种有前景的技术，但必须设计一种实验装置来测量本征动力学并阐明塑料热解过程的化学原理。为了解决这个问题，设计、构建并评估了一种改进的固体反应脉冲加热分析（PHASR）系统，用于聚烯烃热解。实验结果表明，新的PHASR系统能够在恒定温度下测量塑料[例如低密度聚乙烯（LDPE）]热解产物的毫秒级分辨演化。结果表明，PHASR系统能够产生可重复的快速加热时间（20毫秒）和冷却时间（130 - 150毫秒），并在反应过程中保持稳定的温度。还开发了第二个可视化PHASR系统，以实现对LDPE实时热解的高速摄影和可视化。
