预氧化技术,新突破!

来源:精工科技 发布时间: 2025-09-11

在追求碳纤维高效、低碳生产的道路上,每一步向前都意义非凡。今天,我们很高兴与大家分享,精工科技碳纤维研究院团队自主研发的热风-微波多物理场耦合预氧化技术,已于近期中试验证中取得圆满成功!

创新突破:首台多场耦合预氧化中试炉成功研制

长久以来,预氧化工艺因在PAN基碳纤维生产过程中所需能耗最高、周期最长,成为制约碳纤维产业提质增效的关键瓶颈。

而今天,我们正以持续创新破局攻坚——以热风-微波多物理场耦合技术为突破口,成功设计并打造出国内首台0.4m宽幅热风-微波多物理场耦合预氧化中试炉,通过对炉内热场、微波电场的协同调控,实现了预氧化工艺段的大幅提速与降耗。

1.jpg

该中试炉体采用端到端气流循环设计,并创新性地首创特殊结构的微波能馈入方式与腔内布局,使炉体在发生热膨胀变形时,仍能维持炉内宽度方向上微波场的均匀分布,同时又能确保温度场和风速场的高度一致性,为纤维进行持续稳定的氧化提供坚实基础。

2.jpg

0.4m微波预氧炉电场仿真图

中试验证:节能提速显著,规模化应用潜力清晰

中试结果证实,该预氧炉在运行中的强化效果与中试前的小试阶段表现一致,且该阶段成果令人鼓舞:在同等温度梯度下,预氧化周期较传统工业热风工艺缩短30%,单位能耗较传统降低13%–15%,展现出了显著的经济性与环保效益。

3.jpg

更值得关注的是,通过现有生产数据建立能耗模型并结合相似性原理推演,当放大至3m宽幅工业化装置时,预计可较传统生产实现能耗降幅20%–25%,该技术路径具备清晰的规模化推广潜力。

4.jpg

230℃条件下,有无微波结果对比。

同时,在微波预氧化炉全流程研制与中试验证过程中,研发团队系统构建起包括结构设计、场耦合控制、工艺匹配等多维度的工程技术体系与经验,形成了可复用、可扩展的模块化知识库与参数数据库,为后续更大宽幅装备的快速开发与工程化提供了扎实支撑。

中试验证的成果,不会只停留在实验室。当前,基于所积累的可靠数据与技术储备,精工科技3m宽幅工业级热风-微波多物理场耦合预氧化炉的全流程设计与验证工作已在推进中。可以预见,该验证工作的落地,国产碳纤维装备将迎来更高效率、更节能、更绿色的未来。

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