Upcycling of Contaminated Plastics Recovered Through Landfill Mining and Pyrolysis to High-Value Products

通过垃圾填埋场采矿和热解回收的受污染塑料升级为高价值产品

• 批准号: 2625021
• 金额: --
• 依托单位: CRANFIELD UNIVERSITY
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2016
• 资助国家: 英国
• 起止时间: 2016 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2625021
• 关键词: Upcycling; Contaminated; Plastics; Recovered; Through

Pyrolysis is known for yielding condensable volatile organic vapours of varying chain length and complexity depending on process configuration and operating conditions. Although the process has been known for decades, significant challenges need to be addressed in order to deploy economic commercial systems. Given that plastics are manufactured from fossil feedstock, the properties of the pyrolysis liquids are expected to be similar to those of conventional chemicals and fuels. However, the wide range of non-standardised mixed waste plastics and presence of organic additives enhance secondary reactions during thermal conversion processes. While these issues need to be addressed in conventional processes of valorisation of plastics, more uncertainties and challenges are encountered in the case of advanced thermal conversion of plastics recovered through landfill mining because the presence of contaminants and chemical degradation result in more variability of the composition.

众所周知，热解会根据工艺配置和操作条件产生不同链长和复杂性的可冷凝挥发性有机蒸气。尽管该过程已为人所知数十年，但为了部署经济商业系统，仍需要解决重大挑战。鉴于塑料是由化石原料制造的，热解液体的特性预计与传统化学品和燃料的特性相似。然而，各种非标准化混合废塑料和有机添加剂的存在增强了热转化过程中的二次反应。虽然这些问题需要在传统的塑料增值过程中得到解决，但在通过垃圾填埋场采矿回收的塑料进行高级热转化的情况下，会遇到更多的不确定性和挑战，因为污染物的存在和化学降解导致成分的更多变化。