Abstract：
Molten salt pyrolysis technology stands out as a potent approach for achieving efficient degradation and energy recovery of composite organic materials. Nevertheless, challenges such as the high melting point of molten salt, product destruction, and the complexities of treating waste salt pose significant limitations to the widespread application and popularization of this technology. To tackle these issues, this study proposes a salt-assisted pyrolysis method based on capillary heat transfer called permeable liquid salt pyrolysis. Focusing on abandoned power industry insulators, the research delves into the thermal and mass transfer model of cluster-embedded materials under non-molten salt conditions. The investigation reveals that the capillary between glass fiber and resin proves beneficial in enhancing heat transfer conditions by creating a novel phase known as permeate liquid. Results demonstrate that salt-assisted pyrolysis can substantially lower the required temperature and enhance the pyrolysis reaction rate, achieving a maximum degradation efficiency of 98.99 %. Additionally, the pyrolysis products undergo in-situ modification, with a notable reduction in benzene series compounds ranging from 68 % to 85 %. Furthermore, an erosion diffusion capillary mode is established. This study presents an environmentally-friendly approach to recycle and modify products derived from waste resin-based composite materials generated in the electric power industry.
摘要：
熔盐热解技术是实现复合有机材料的有效降解和能量回收的有效方法。然而，挑战，如熔盐的高熔点，产品销毁,废盐处理的复杂性对该技术的广泛应用和推广构成了重大限制。为了解决这些问题,这项研究提出了一种基于毛细管传热的盐辅助热解方法，称为可渗透液体盐热解。专注于废弃的电力行业绝缘子，该研究深入研究了非熔盐条件下团簇嵌入材料的传热和传质模型。研究表明，玻璃纤维和树脂之间的毛细管通过产生一种称为渗透液的新型相来改善传热条件。结果表明，盐辅助热解可以大大降低所需温度，提高热解反应速率，达到98.99%的最大降解效率。此外,热解产物进行原位改性，苯系列化合物的显着减少范围从68％到85％。此外，建立了侵蚀扩散毛细管模式。这项研究提出了一种环保的方法来回收和改性从电力行业产生的废树脂基复合材料中提取的产品。
