转炉炼钢一次除尘蒸发冷却器严重积灰问题及解决方案
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摘要
上海梅山钢铁股份有限公司二炼钢4号、5号转炉一次除尘LT系统于2012年4月开始陆续热试投产,除尘工艺设计及关键设备引进GEA公司技术和工艺及装备。投产至今,随着吹氧量的增加、年产量的提升,出现了蒸发冷却器和静电除尘器入口分布板严重积灰的问题。因此,进行理论计算、CFD模拟并与类似转炉LT系统的蒸发冷却器设计尺寸和运行效果对比,通过增加蒸发冷却器的高度实现了升级改造。
The primary dust removal LT system of 4#&5# converters for Second Steelmaking at Shanghai Meishan Iron and Steel Co.,Ltd. was conducted hot test and put into operation in April 2012,and as for the dust removal process design and key equipment,the technology,process and equipment from GEA Company were introduced. Together with operation,with the increase of oxygen blowing and the increase of annual output,the problem of serious dust accumulation of the evaporative cooler and the inlet distribution plate of the electrostatic precipitator appeared. Therefore,by theoretical calculation,CFD simulation and comparison of dimensions and operation results of evaporative coolers for similar converters' LT systems,upgrading and reconstruction measure through increasing the height of the evaporative cooler was proposed and carried out.
The primary dust removal LT system of 4#&5# converters for Second Steelmaking at Shanghai Meishan Iron and Steel Co.,Ltd. was conducted hot test and put into operation in April 2012,and as for the dust removal process design and key equipment,the technology,process and equipment from GEA Company were introduced. Together with operation,with the increase of oxygen blowing and the increase of annual output,the problem of serious dust accumulation of the evaporative cooler and the inlet distribution plate of the electrostatic precipitator appeared. Therefore,by theoretical calculation,CFD simulation and comparison of dimensions and operation results of evaporative coolers for similar converters' LT systems,upgrading and reconstruction measure through increasing the height of the evaporative cooler was proposed and carried out.
引文
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