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.

中文翻译：

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熔盐加热轮胎热解工艺与炭黑改性工艺的耦合技术经济评价与生命周期评价


以前的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存能力，以增强传热并提高热解产物的质量。在试点和工业化阶段，技术经济分析 （TEA） 和生命周期评估 （LCA） 对于评估经济潜力和环境影响特征至关重要。本研究基于熔盐加热轮胎热解工艺结合炭黑改性工艺，依靠工艺级示范项目的数据，进行了 TEA 和 LCA。TEA 结果表明，每吨轮胎的单位处置成本为 2090.6 元。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有积极影响，每处理一吨废轮胎排放 224 公斤二氧化碳 ₂ 当量。在考虑产品替代时，该工艺的温室气体排放量为 -1292.2 kg CO ₂ 当量，显示出很高的环境效益。本文对工业上熔盐加热轮胎热解工艺的实际操作具有重要的参考价值。