基于Rist操作线高炉加氢冶炼过程物料能量消耗分析

Analysis of material energy consumption in blast furnace with H2 based on Rist operating line

通过对比分析含H_(2)的Rist操作线和传统不含H_(2)的Rist操作线特点,分析了加入H_(2)对高炉冶炼过程物料和能量消耗影响。基于含H_(2)的Rist操作线可知,随着H_(2)入炉量的增加,浮氏体区气相组成变化导致Rist操作线W点右移,由于热量需求的变化导致P点向下移动,Rist操作线的斜率增加,表明C和H_(2)的总消耗量增加。由不含H_(2)的Rist操作线可知,随着H_(2)含量的增加,斜率逐渐减小,碳耗减少,证实了高炉运行中H_(2)降低焦比的可能性。由计算结果可知,H_(2)加入量分别为60、120、180 m3/t时,焦比分别降低5.73、10.95、14.85 kg/t。

By comparing and analyzing the characteristics of the Rist operating line with H_(2)and the conventional Rist operating line without H_(2),the effect of adding H_(2)on the material and energy consumption of the blast furnace smelting process were analyzed.Based on the Rist operating line with H_(2),it is known that with the increase of H_(2)putting into the furnace,the change of gas phase composition in the wustite area leads to the right shift of the W point of the Rist operating line,and due to the change in heat demand,the P point moves downward,and the slope of the Rist operating line increases,indicating an increase in the total consumption of C and H_(2).From the Rist operation line without H_(2),it can be seen that with the increase of H_(2)content,the slope gradually decreases and the carbon consumption decreases,confirming the possibility of H_(2)reducing the coke ratio during blast furnace operation.The calculation results show that the coke ratio decreases by 5.73,10.95 and 14.85kg/t,respectively,when the addition amount of H_(2)is 60,120 and 180m3/t.