湘钢高炉煤气设备设施腐蚀原因及解决方案探讨  

A Discussion on the Causes of Corrosion in BF Gas Facilities of Xiangtan Steel and Countermeasures

作　　者：吴畏 WU Wei(Energy and Environment Dept. of Hunan Xiangtan Iron and Steel Co.,Ltd.,Xiangtan,Hunan 411101,China)

机构地区：[1]湖南华菱湘钢能源环保部,湖南湘潭411101

出　　处：《冶金动力》2019年第2期24-31,共8页Metallurgical Power

摘　　要：阐述了湘钢干法除尘后高炉煤气相关设备的腐蚀状况,通过对高炉煤气冷凝水和喷淋洗涤水、高炉煤气饱和水等对管道腐蚀机理研究,提出了盐酸的析氢腐蚀是造成湘钢高炉煤气管道腐蚀的主要原因,分析了高炉煤气中氯元素来源。并从高炉入炉炉料结构、工艺技术等方面给出了湘钢高炉煤气管道及附属设施腐蚀的解决方案。The paper presents the corrosion state of the blast furnace gas facilities after dry dedusting at Xiangtan Steel.Through studying the corrosive mechanism of BFG condensate,spray washing water and BFG saturated water to the pipe system,it puts forward that the hydrogen evolution corrosion of hydrochloric acid is the main cause of BFG pipe corrosion.The paper also analyzes the source of chlorine in BFG and provides solutions for the BFG facility corrosion problem of Xiangtan Steel from the aspects of furnace burden structure and process technology.

关 键 词：高炉煤气 煤气管道 氯离子 腐蚀 

分 类 号：TQ547[化学工程—煤化学工程]