水泥窑废纺直投式供料系统优化改造及工程应用

doi:10.19698/j.cnki.1001-6171.20265034

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摘要水泥行业是高耗能、高碳排放的基础产业，推行可燃固废替代原煤是落实节能降碳政策、降低生产成本的重要路径。本文以4 800t/d水泥熟料生产线为依托，自主搭建了5t/h废纺直投式供料系统，针对系统存在的堵料、风管积料及燃料替代率偏低等技术问题，通过采取增设远程遥控行车及四级打散设备、优化分解炉投料点位、严控进厂物料有害组分等措施开展了系统全流程优化改造。工业试验结果表明：废纺着火温度低于煤粉，但燃尽周期更长；将投料点由三次风管弯头迁移至分解炉低氧下部区域，可彻底消除三次风管积料隐患，实现系统24h连续稳定运行，热量替代率由不足2%提升至2.5%；在不劣化熟料强度、游离氧化钙指标的前提下，系统试运行期间，累计消纳废纺4 500t，节约原煤2 864t，减少CO₂排放858t，节约燃料成本超280万元。该改造方案投资低、适配性强，可同步实现固废消纳、节煤降碳双重效益，为同类水泥生产线废纺资源化利用提供工程参考。

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	程稳
	胡明
	吕兵
	刘晨浩

关键词: 水泥窑直投式供料废纺织品燃料替代率固废协同处置

Abstract: The cement industry, characterized by high-energy consumption and high carbon-emissions,increasingly utilizes combustible solid waste as a coal substitute to implement energy-saving and carbon-reduction policies and reduce production costs. This study details the implementation and optimization of a 5t/h waste textile direct-feeding system on a 4 800t/d new dry process clinker production line. To address operational challenges such as material blockage, dust accumulation in the tertiary air duct, and low Thermal Substitution Rates (TSR), a comprehensive process optimization was conducted. Key measures included the installation of a remote-controlled overhead crane and a four-stage dispersing device, optimization of the feeding-injection position of the precalciner, and stringent control of harmful components in the raw waste. Combustion characteristic analysis indicated that while waste textiles have a lower ignition temperature than pulverized coal, they exhibit a longer burnout time. By shifting the injection point from the tertiary air duct elbow to the lower oxygen-lean zone of the precalciner, the hidden danger of material accumulation in the tertiary air duct was completely eliminated, enabling stable 24h continuous operation. Consequently, the TSR increased from less than 2% to 2.5%. Industrial trials demonstrated the consumption of 4 500t of waste textiles without compromising clinker strength or free lime (f-CaO) content. This initiative resulted in a saving of 2 864t of raw coal, a reduction of 858t in CO₂ emissions, and fuel cost savings exceeding CNY 2.8 million. This retrofit, characterized by low investment and high adaptability, provides a viable engineering reference for the co-processing of waste textiles in similar cement production lines.

Key words: cement kiln direct-feeding alternative fuel waste textiles thermal substitution rate co-processing of solid waste

收稿日期: 2026-01-18 出版日期: 2026-09-25 发布日期: 2026-09-25 整期出版日期: 2026-09-25

ZTFLH:

TQ172.65

作者简介: 程稳（1971—），男，本科，工程师，主要从事水泥技术生产研究。E-mail：875165580@qq.com

引用本文:

程稳, 胡明, 吕兵, 刘晨浩. 水泥窑废纺直投式供料系统优化改造及工程应用[J]. 水泥技术, 2026, 1(5): 34-39.
Cheng Wen, Hu Ming, Lv Bing, Liu Chenhao. Optimization and Engineering Application of a Direct-feeding System for Waste Textiles in Cement Kilns#br#. Cement Technology, 2026, 1(5): 34-39.

链接本文:

http://www.cemteck.com/CN/10.19698/j.cnki.1001-6171.20265034 或 http://www.cemteck.com/CN/Y2026/V1/I5/34

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