废风电叶片回收增强纤维的工艺与参数优化  

Recycling Reinforced Fibers from Waste Wind Turbine Blades:Process and Parameter Optimization for Improving Mechanical Strength of the Fiber

作　　者：王程浩 朱峰 陈德珍[1,2] 洪鎏 WANG Chenghao;ZHU Feng;CHEN Dezhen;HONG Liu(Thermal and Environmental Engineering Institute,Tongji University,Shanghai 200092,China;Shanghai Engineering Research Center of Multi-source Solid Wastes Co-processing and Energy Utilization,Shanghai 200092,China;Titan Wind-Composite Co.Ltd.,Changshu 215500,Jiangsu,China)

机构地区：[1]同济大学热能与环境工程研究所,上海200092 [2]上海市多源固废协同处理和能源化工程技术研究中心,上海200092 [3]苏州天顺复合材料科技有限公司,江苏常熟215500

出　　处：《新能源进展》2025年第1期97-106,共10页Advances in New and Renewable Energy

基　　金：上海市“科技创新行动计划”碳达峰碳中和专项项目(22dz1208200)。

摘　　要：风能在可再生能源体系中扮演着重要的角色,但随着废风电叶片数量逐年增加,废风电叶片的回收利用刻不容缓。利用热解法回收风电叶片中的增强纤维具有减容减量快、资源化程度高的优点,已有的研究主要针对碳纤维为增强纤维的情况,回收玻璃纤维的研究很少。玻璃纤维的强度受处理温度的影响较大,为提高玻璃纤维强度、降低能耗,采用热解-氧化脱碳工艺回收增强玻璃纤维,针对脱碳过程中的三个关键工艺参数即脱碳温度、保温时间、升温速率进行优化,基于响应曲面法设计实验,以回收的玻璃纤维的力学强度(最大荷重)为响应值,探究三个工艺参数对最大荷重的交互影响,实现回收的纤维具有最高强度。结果表明:脱碳温度对最大荷重的影响最为显著,保温时间和升温速率对最大荷重也有一定的影响。优化后的最佳工艺参数为脱碳温度452.45℃、保温时间43.20 min、升温速率11.12℃/min。实验也证实了优化后回收的纤维强度是最高的,可达到原始强度的51.2%,且优化的工艺参数对应的过程更节能。Wind energy plays a crucial role in the renewable energy system.However,as the number of discarded wind turbine blades increases annually,recycling and utilizing these blades has become an urgent necessity.The pyrolysis-oxidation treatment of wind turbine blades has the advantages of reducing volume and recycling reinforced fiber from the blades.While research on recovering carbon fiber when used as reinforced fiber is available,few research pays attention to recycling glass fiber.To improve the mechanic strength of the recovered glass fiber and reduce energy consumption in this process,in this paper,key parameters in the pyrolysis-oxidation process,including the decarburization temperature,holding time,and heating rate,are optimized based on the response surface method with the fracture load of the recycled glass fiber as the response value to achieve the best mechanical properties of the recycled fiber,and the interaction between the three key parameters was also explored.The results show that the decarburization temperature plays most significant role in the fracture load,and the holding time and heating rate also play the important roles in the fracture load.The optimized process parameters are a decarburization temperature of 452.45℃,a reaction time of 43.20 min,and a heating rate of 11.12℃/min.The experimental results proved that those values are most suitable;the fracture load of the recycled fiber obtained after optimization achieved 51.2%of the new material,and the optimized process is more energy effective.

关 键 词：废风电叶片 热解 增强纤维回收 氧化脱碳 响应曲面法 最大荷重 

分 类 号：TK09[动力工程及工程热物理]