铝加工热轧机烟气处理技术及工程应用研究

Research on Flue Gas Treatment Technology and Engineering Application of Hot Rolling Mill in Aluminum Processing

摘要

铝加工热轧机在生产过程中因乳化液受高温蒸发后会产生大量含油雾的烟气，若处理不当易出现车间内烟气逸散、烟囱飘油、白雾排放等问题，不仅污染环境，增加环保事件风险，还会增加设备维护成本。本文结合《重污染天气重点行业应急减排措施制定技术指南》要求，针对国内现有烟气处理系统过滤风速过高、净化不彻底、无法自动清洗等关键问题，提出“旧设备改造+多级冷凝过滤”的集成处理方案。详细阐述了方案的工艺设计、关键设备选型、施工组织计划，并对技术可行性和应用效益进行分析。实践表明，该方案可将过滤风速控制在2~2.5m/s，油雾净化效率显著提升，实现烟气达标排放，同时降低维护成本，为铝加工行业热轧机烟气处理提供可靠的技术参考。

Abstract

During aluminum processing hot rolling operations, emulsified liquid evaporation at high temperatures generates substantial oil-laden smoke emissions. Improper treatment may lead to workshop smoke dispersion, chimney oil drift, and white mist emissions, causing environmental pollution, increased environmental risks, and higher maintenance costs. This paper proposes an integrated “old equipment retrofit + multi-stage condensation filtration” solution addressing critical issues in domestic flue gas treatment systems, including excessive filtration velocity, incomplete purification, and lack of automatic cleaning capabilities, in accordance with the Technical Guidelines for Emergency Emission Reduction Measures in Key Industries During Severe Air Pollution. The solution details process design, key equipment selection, construction planning, and analyzes technical feasibility and application benefits. Practical implementation demonstrates that this approach maintains filtration velocity at 2-2.5 m/s, significantly improves oil mist purification efficiency, achieves compliant flue gas emissions, reduces maintenance costs, and provides reliable technical references for hot rolling flue gas treatment in aluminum processing industries.

关键词

铝加工 / 热轧机 / 油雾烟气 / 多级过滤 / 冷凝回收

Key words

aluminum processing / hot rolling mill / oil mist flue gas / multi-stage filtration / condensation recovery

参考文献

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