废塑料的热化学回收资源循环

Thermochemical Recycling of Waste Plastics for Resource Circulation

       课题组面向全球性的废塑料堆积与白色污染挑战，致力于开发“热解-催化升级”一体化技术，旨在实现废塑料的高效化学回收与资源化利用。核心研究方向为废塑料的催化热解全流程工艺开发与优化。研究体系主要针对典型的废弃聚烯烃塑料（如PP、PS、PVC等），通过构建热解-催化协同作用机制，精准调控反应路径。核心技术手段包括设计高性能催化剂（如改性分子筛、金属/酸位点协同催化剂等）以实现关键C-C键的定向断裂与重组，并耦合反应器优化与过程强化策略。该技术路径旨在将废弃塑料定向转化为高附加值的产物，如高纯度的塑料裂解油、轻质芳烃（BTX）等基础化学品，乃至乙烯、丙烯等单体原料。最终目标是为构建“废塑料→基础化学品/单体→新塑料或化工产品”的工业级闭环碳循环提供关键技术支撑，推动塑料循环经济的发展。

Our research addresses the global challenge of plastic waste accumulation and white pollution by developing pyrolysis-catalytic up-grading technologies to achieve efficient chemical recycling and value-added utilization of waste plastics. The core research direction focuses on the full-process development and optimization of catalytic pyrolysis for waste plastics.The research system primarily targets typical waste polyolefin plastics (e.g., PP, PS, PVC). By establishing a synergistic mechanism between pyrolysis and catalysis, we precisely regulate reaction pathways to enable directional conversion. Key technical approaches include the design of high-performance catalysts (such as modified zeolites, metal/acid synergistic catalysts, etc.) to achieve selective cleavage and reorganization of key C–C bonds, coupled with reactor optimization and process intensification strategies.This technological pathway aims to convert waste plastics into high-value products, such as high-purity plastic pyrolysis oil, light aromatics (e.g., BTX), and even monomer precursors like ethylene and propylene. The ultimate goal is to provide key technological support for establishing an industrial-scale closed-loop carbon cycle—"waste plastics → basic chemicals/monomers → new plastics/chemical products"—and to advance the development of a circular economy for plastics.