Jingwei Qi , Yijie Wang , Pengcheng Xu , Ming Hu , Taoli Huhe , Xiang Ling , Haoran Yuan , Jiadong Li , Yong Chen
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引用次数: 0
Abstract
Previous research proposed a molten salt heating tire pyrolysis reactor, based on the high heat transfer and storage capabilities of molten salts, to enhance heat transfer and improve the quality of pyrolysis products. During the pilot and industrialization stage, the techno-economic analysis (TEA) and life cycle assessment (LCA) are crucial to evaluate the economic potential and the environmental impact characteristics. This study conducted a TEA and LCA based on the molten salt heating tire pyrolysis process coupled with a carbon black modification process, relying on data from a process-level demonstration project. TEA results show that the unit disposal cost per ton of tire is 2090.6 RMB. The financial internal rate of return (FIRR) is 19.62%, and the payback time (PBT) is 5.87 years. The LCA results show that the molten salt heating tire pyrolysis process has a positive impact on global warming, emitting 224 kg CO2 equivalent for every ton of waste tires disposed of. When considering product substitution, the greenhouse gas emissions for this process are −1292.2 kg CO2 equivalent, demonstrating high environmental benefits. This paper is of significant reference value for the practical operation of the molten salt heating tire pyrolysis process in industry.
前期研究提出了一种熔盐加热轮胎热解反应器,基于熔盐的高传热和储热能力,增强传热,提高热解产物质量。在试点和产业化阶段,技术经济分析(TEA)和生命周期评价(LCA)是评价其经济潜力和环境影响特征的关键。本研究依托某工艺级示范项目的数据,对熔融盐加热轮胎热解工艺与炭黑改性工艺进行了TEA和LCA分析。TEA结果表明,每吨轮胎的单位处理成本为2090.6元/吨。财务内部收益率(FIRR)为19.62%,投资回收期(PBT)为5.87年。LCA结果表明,熔盐加热轮胎热解过程对全球变暖具有积极影响,每处理1吨废轮胎排放224 kg CO2当量。在考虑产品替代时,该过程的温室气体排放量为-1292.2 kg CO2当量,显示出较高的环境效益。本文对熔盐加热轮胎热解工艺在工业上的实际操作具有重要的参考价值。
期刊介绍:
The Journal of Cleaner Production is an international, transdisciplinary journal that addresses and discusses theoretical and practical Cleaner Production, Environmental, and Sustainability issues. It aims to help societies become more sustainable by focusing on the concept of 'Cleaner Production', which aims at preventing waste production and increasing efficiencies in energy, water, resources, and human capital use. The journal serves as a platform for corporations, governments, education institutions, regions, and societies to engage in discussions and research related to Cleaner Production, environmental, and sustainability practices.