Tuning Supercritical Water for Polymer Recycling to Monomers and Chemicals

调整超临界水以将聚合物回收为单体和化学品

• 批准号: 571841-2021
• 负责人: Charpentier, PaulA
• 金额: $ 16.38万
• 依托单位: University of Western Ontario
• 依托单位国家: 加拿大
• 项目类别: Alliance Grants
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=746667
• 关键词: Tuning; Supercritical; Water; Polymer; Recycling

In this NSERC Alliance-Mitacs Accelerate project, we will work with Aduro Clean Technology Inc. (ACT) to develop a new economically viable continuous process focusing on sub/supercritical water (SCW) for intractable polymer recycling. Initial work will focus on water as the solvent, as we have developed a previous continuous process with Aduro using water for converting fatty acids from corn distillers waste into green diesel. Aduro have developed a small pilot unit in Sarnia, Ontario based on our labs previous results for corn conversion. Our goal in this project is to develop an environmentally-responsible upcycling process that can handle both diverse mixed plastic wastes and intractable plastics found in todays and tomorrows landfills. Our methodology will be to develop a multi-stage reactor system with each stage controlled under different experimental conditions. Firsty we will remove valuable products such as additives, carbon fibers, then chemically convert the remainder catalytically to valuable chemicals including monomers and aromatics. A pyrolytic end-process for treating waste materials from this process will be examined which can be utilized by Sarnia refiners. Our goal is to minimize carbon loss through this novel reactor design process, examining both model polymeric systems and real waste streams. We will develop a new analytical view-cell method to allow us to measure dissolution and depolymerization kinetics under the process conditions of interest in water to facilitate our reactor design and process modeling. For the catalytic process to monomers and chemicals, the process parameters including temperature, pressure, catalyst type, residence time, and water to feed ratios will be studied with kinetic models developed suitable for scale-up. The students will work with the ACT team to develop a pilot plant at their Sarnia, Ontario facility that can demonstrate this technology. This project will help lower Canada's carbon waste while supporting the circular economy, helping to eliminate a current waste problem while providing a new cleantech solution and value chain for the Canadian economy.

在这个NSERC Alliance-Mitacs加速项目中，我们将与Aduro Clean Technology Inc.（ACT）合作，开发出一个新的经济可行的连续过程，重点是亚/超临界水（SCW），以进行棘手的聚合物回收。 最初的工作将集中在水作为溶剂上，因为我们已经使用Aduro开发了先前的连续过程，该过程使用水将脂肪酸从玉米蒸馏厂浪费转化为绿色柴油。 Aduro基于我们的实验室以前的玉米转化结果，在安大略省萨尼亚开发了一个小型试验部门。我们在该项目中的目标是开发一个对环境负责的升级过程，该过程可以处理当今发现的多种混合塑料废物和顽固性的塑料。 我们的方法是开发一个多阶段反应器系统，每个阶段在不同的实验条件下受到控制。首先，我们将删除有价值的产品，例如添加剂，碳纤维，然后将其余的催化剂化学转化为包括单体和芳香剂在内的有价值的化学物质。 将检查用于处理此过程中废料的热解最终过程，该过程将被Sarnia炼油厂使用。我们的目标是通过这个新型的反应堆设计过程最大程度地减少碳丢失，研究模型聚合系统和真实的废物流。我们将开发一种新的分析视图方法，使我们能够在水中感兴趣的过程条件下测量溶解和解聚动力学，以促进我们的反应堆设计和过程建模。对于单体和化学物质的催化过程，将研究适合于扩大规模的动力学模型，研究温度，压力，催化剂类型，停留时间和水与进料比的过程参数。这些学生将与ACT团队合作，在安大略省萨尼亚（Sarnia）设施的萨尼亚（Sarnia）开发一家试点工厂，该工厂可以证明这一技术。该项目将有助于减少加拿大的碳废物，同时支持循环经济，从而消除当前的废物问题，同时为加拿大经济提供新的清洁技术解决方案和价值链。