测定电弧炉中燃烧器喷尖“距废料距离”的SERAFIN传感器

摘要

开发了用以测定电弧炉(EAF)中燃烧器喷尖“距废料距离”的SERAFIN传感器,同时讨论了其具有监测熔化废钢的工艺优点.详细描述了传感器测量原理和光学测量头的设计特点.SERAFIN传感器是一种适用于环形燃烧器、组合燃烧器以及氧气喷枪内部的在线测量“距废料距离”的测量技术,工业试验表明运用此传感器可以监测每个注射器前面废料的熔化情况,进而优化其操作,并可在发生损坏前检测逆吹情况.仪表盘过热比较结果表明其可以用于逆吹倾向的预测.%SERAFIN sensor for "Distance-to-scrap" determination at burner tip in electric arc furnace is developed. The process benefit of this sensor, devoted to the monitoring of the melting scraps, will be discussed. Meanwhile, its principle of measurement and the design feature of optical head are described in detail. SERAFIN sensor is an on-line "distance-to-scrap" measurement technique which is fitted inside annular burners, combined burners or oxygen lances. Industrial experiment shows that this sensor could be used to monitor the melting of scrap in front of each injector, and thus optimising its operation and detecting blow-back occurrences before any damage is created. The comparison made with the panel overheating proves their ability to predict blow-back proclivity.