Abstract This study focuses on chemical recycling of plastics from waste electrical and electronic equipment (WEEE), which constitutes a problematic waste fraction due to the presence of brominated flame retardants. An auger reactor has been designed and used for this study. Real WEEE material provided by Stena Technoworld has been pyrolyzed under different temperature conditions. The performance of the reactor as well as other important parameters such as the fate of the bromine have been investigated and evaluated. The main outcome of this investigation is to simulate a continuous process, which can be useful for designing a full-scale industrial process. The mass balance results after performing thermal treatment at 400, 500, and 600 °C, showed a high gas yield (44 %wt) at the temperature of 600 °C, which energy content is enough to self-sustain the auger reactor. At the low temperature of 400 °C the oil production reaches its maximum yield as well as maximum concentration of bromine, corresponding to 0.5 wt% in the oil. Several valuable organic compounds have been detected in the oil composition, which can be used as precursors for feedstock recycling producing new plastics.

中文翻译：

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用于热解废弃电子电气设备 (WEEE) 的单螺杆反应器中溴的性能分析和归宿

摘要 本研究的重点是对废弃电气和电子设备 (WEEE) 中的塑料进行化学回收，由于溴化阻燃剂的存在，WEEE 构成了一个有问题的废物部分。本研究设计并使用了一个螺旋反应器。Stena Technoworld 提供的真实 WEEE 材料已在不同温度条件下热解。已经研究和评估了反应器的性能以及其他重要参数，例如溴的归宿。这项调查的主要结果是模拟一个连续过程，这对于设计一个全面的工业过程很有用。在 400、500 和 600 °C 下进行热处理后的质量平衡结果，在 600 °C 温度下显示出高产气率（44%wt），其能量含量足以使螺旋钻反应器自我维持。在 400 °C 的低温下，石油产量达到其最大产量以及溴的最大浓度，对应于油中的 0.5 wt%。在油成分中检测到了几种有价值的有机化合物，可用作原料回收生产新塑料的前体。