Synergistic effects in the Co-pyrolysis of waste tires, plastics, and corn stalks: Kinetic and thermodynamic analyses for enhanced resource utilization

IF 9 1区 工程技术 Q1 ENERGY & FUELS
Tilun Shan, Hu Chen, Ting Liu, Zizhen Ma, Yan Tan, Huawei Zhang
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Abstract

In this study, the co-pyrolysis of corn stalks (Cs) with various polymer waste materials, including waste tires (WTs), waste plastics (WPs), and their blends (WTs/WPs), is investigated. Thermogravimetric analysis (TGA), kinetic models (FWO, Starink, DAEM), and pyrolysis tube furnace equipment are utilized for a comprehensive evaluation and analysis of pyrolysis and co-pyrolysis. The results indicate that the addition of Cs during pyrolysis significantly reduces the pyrolysis temperature of WTs, WPs, and their blends by 35.1–245.7 °C. Kinetic analysis reveals that the actual activation energy of WTs/WPs (235.5 kJ/mol) is lower than the theoretical prediction (239.2 kJ/mol). Theoretical thermogravimetric and derivative thermogravimetric (TG-DTG) curves show distinct peaks indicative of positive synergism, confirming the beneficial interaction between WTs and WPs. However, other mixed samples (WTs/Cs, WPs/Cs and WTs/WPs/Cs) display varying degrees of negative synergism due to the presence of oxygen-containing functional groups (C-O-C and O-H). Pyrolysis experiments in a tube furnace demonstrate that the positive synergistic effect enhances the pyrolysis oil yield, with the actual oil yield of WTs/WPs (60.15 wt%) exceeding the expected theoretical value (58.03 wt%). In contrast, the negative synergistic effect observed in WPs/Cs and WTs/WPs/Cs is more conducive to gas production. The findings of this study provide theoretical and parametric support for the co-pyrolysis of solid waste products, aiming to reduce energy consumption, enhance oil production rates, and address limitations.

Abstract Image

废轮胎、塑料和玉米秸秆共热解的协同效应:提高资源利用的动力学和热力学分析
本研究研究了玉米秸秆(Cs)与废轮胎(WTs)、废塑料(WPs)及其共混物(WTs/WPs)等多种高分子废弃物的共热解。利用热重分析(TGA)、动力学模型(two、Starink、DAEM)和热解管炉设备对热解和共热解进行了综合评价和分析。结果表明,在热解过程中添加Cs可显著降低WTs、WPs及其共混物的热解温度35.1 ~ 245.7℃。动力学分析表明,WTs/WPs的实际活化能(235.5 kJ/mol)低于理论预测(239.2 kJ/mol)。理论热重和导数热重(TG-DTG)曲线显示出明显的峰,表明正协同作用,证实了WTs和WPs之间的有益相互作用。然而,其他混合样品(WTs/Cs, WPs/Cs和WTs/WPs/Cs)由于含氧官能团(C-O-C和O-H)的存在而表现出不同程度的负协同作用。管式炉热解实验表明,正协同效应提高了热解产油率,WTs/WPs的实际产油率(60.15 wt%)超过了预期理论值(58.03 wt%)。相比之下,WPs/Cs和WTs/WPs/Cs的负协同效应更有利于产气。本研究结果为固体废物共热解提供了理论和参数支持,旨在降低能源消耗,提高石油产量,并解决局限性。
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来源期刊
Renewable Energy
Renewable Energy 工程技术-能源与燃料
CiteScore
18.40
自引率
9.20%
发文量
1955
审稿时长
6.6 months
期刊介绍: Renewable Energy journal is dedicated to advancing knowledge and disseminating insights on various topics and technologies within renewable energy systems and components. Our mission is to support researchers, engineers, economists, manufacturers, NGOs, associations, and societies in staying updated on new developments in their respective fields and applying alternative energy solutions to current practices. As an international, multidisciplinary journal in renewable energy engineering and research, we strive to be a premier peer-reviewed platform and a trusted source of original research and reviews in the field of renewable energy. Join us in our endeavor to drive innovation and progress in sustainable energy solutions.
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