管线钢冶炼过程火用分析

本文应用火用分析方法对典型管线钢冶炼工艺过程的能量传递与转换过程进行了分析。结果表明，外部火用损失为主要损失，占流程总火用损失的84.79%；转炉、出钢、LF、RH和钙处理工序的火用损失比例分别为37.42%、27.94%、13.13%、19.92%和1.59%；各工序的主要火用损失分别来源于转炉渣排放、出钢过程散热、电能无用功、蒸汽做功和喂线过程烟尘的溢出。减少管线钢冶炼过程火用损失的重点在于转炉渣所携带火用的回收利用、钢流形状控制、改善钢包烘烤和提高电弧加热效率。

Exergy Analysis on Pipeline Steel Smelting Process

To ascertain the energy loss sources of modern clean steel smelting process,exergy analysis method was applied to the energy transfer and conversion process of typical pipeline steel smelting process.The results showed that,the external exergy lose is the main,account for 84.39% of total exergy loss;the exergy loss proportion of converter,tapping process,LF,RH and calcium treatment process is 37.42%,27.94%,13.13%,19.92% and 1.59% respectively,and its main exergy loss is derived from converter slag discharging,heat dissipation,unavailable electric energy,work of steam and dust emission respectively.The emphases of decreasing exergy loss lie in heat recovering of converter slag,shape controlling of molten steel stream in tapping,improvement of ladle pre-heating,and efficiency enhancing of arc heating during LF refining.