干式除尘器在煤矿掘进工作面的应用现状及发展趋势

    Application status and development trends of dry dust collectors in coal mine heading faces

    • 摘要: 为了解决煤矿掘进工作面高粉尘环境中干式除尘器技术发展存在的结构选型、性能优化及智能化不足的问题,系统地梳理了当前矿用干式除尘器的典型结构类型及性能差异,明确不同类型设备的适用场景,为掘进工作面粉尘防控提供科学依据和技术支撑。首先,分析了过滤式、旋流式、惯性式和重力式干式除尘器的结构特点和运行原理,提出了除尘效率、运行阻力、滤材维护性、湿度适应性、结构紧凑性5个维度的性能评价体系,并进行了多维性能评分;其次,通过文献资料整理和现场调研,总结了干式除尘器在风量动态调节、高湿环境滤材堵塞、结构灵活性不足、维护强度高和二次扬尘风险等方面存在的主要问题;最后,针对上述问题提出了未来干式除尘器的发展趋势。研究结果表明:滤筒式和布袋式结构除尘器的除尘效率较高,但面临维护频繁和湿度适应性差的问题;旋流式、惯性式和重力式结构除尘器虽然除尘效率相对较低,但结构简单、维护成本低,适合用于初级预处理环节。基于现场典型工况分析发现,恒速风机不能有效匹配掘进工作面粉尘质量浓度动态变化(典型波动范围300~1 400 mg/m3),滤材在相对湿度超过80%的条件下易结垢堵塞,且系统运行维护强度高,设备体积较大,缺乏智能状态监控系统。为此,提出了风机智能变频控制、复合功能滤材(如疏水、抗静电覆膜材料)研发、模块化组合结构设计(如旋流+滤筒组合)、智能监测远程运维等作为未来技术发展的关键方向。矿用干式除尘技术的发展亟须从单一结构优化转向智能化调控、模块化设计、多级协同除尘和智能运维管理4个维度协同推进,以实现对掘进工作面复杂粉尘工况的高效治理。

       

      Abstract: To address the problems of inadequate structural selection, insufficient performance optimization, and lack of intelligence in the technological development of dry dust collectors under the high-dust environment of coal mine heading faces, this study systematically summarizes the typical structural types and performance differences of current mining dry dust collectors, clarifies the applicable scenarios of different types of equipment, and provides a scientific basis and technical support for dust prevention and control in heading faces. First, the structural characteristics and operating principles of filter-type, cyclone-type, inertial-type, and gravity-type dry dust collectors were analyzed. A five-dimensional performance evaluation system was proposed, including dust removal efficiency, operating resistance, filter media maintainability, humidity adaptability, and structural compactness, and a multi-dimensional performance scoring was conducted. Second, through literature review and on-site investigations, the main existing problems of dry dust collectors were summarized, such as dynamic air volume adjustment, filter media clogging in high-humidity environments, insufficient structural flexibility, high maintenance intensity, and the risk of secondary dust emission. Finally, aiming at the above problems, the future development trends of dry dust collectors were proposed. The research results show that the dust collectors filter cartridge and bag filter structures of dust collectors have high dust removal efficiency but face problems of frequent maintenance and poor humidity adaptability; although cyclone-type, inertial-type, and gravity-type structures of dust collectors have relatively low dust removal efficiency, they feature simple structures and low maintenance costs, making them suitable for primary pretreatment processes. Based on the analysis of typical on-site working conditions, it is found that constant-speed fans cannot effectively match the dynamic changes of dust mass concentration in heading faces (typical fluctuation range of 300 mg/m3 to 1 400 mg/m3). Filter media are prone to scaling and clogging when the relative humidity exceeds 80%, the system operation and maintenance intensity is high, the equipment volume is relatively large, and there is a lack of an intelligent condition monitoring system. To address these issues, key directions for future technological development are proposed, including intelligent variable frequency control of fans, development of composite functional filter media (such as hydrophobic and antistatic coated materials), modular combined structure design (such as cyclone + filter cartridge combination), and intelligent monitoring with remote operation and maintenance. The development of mining dry dust removal technology urgently needs to shift from single structural optimization to coordinated advancement in four dimensions: intelligent regulation, modular design, multi-stage collaborative dust removal, and intelligent operation and maintenance management, so as to achieve efficient control of the complex dust conditions in heading faces.

       

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