张宣科技氢基竖炉提高煤气利用率的措施  

Measures for Improving Gas Utilization Rate in Hydrogen-based Shaft Furnace of ZXHT

作　　者：闫军 YAN Jun(Hydrogen Metallurgy Company of HBIS ZXHT,Xuanhua 075100,Hebei,China)

机构地区：[1]河钢集团张宣科技氢冶金公司,河北宣化075100

出　　处：《炼铁》2024年第5期68-71,76,共5页Ironmaking

基　　金：河北省重点研发计划资助项目(21314001D)。

摘　　要：对张宣科技氢基竖炉提高煤气利用率的措施进行了总结。针对竖炉COG单耗高,煤气综合利用率低的状况,通过采取提高球团矿质量、提高氢基竖炉进口温度、合理调控还原循环气体中H_(2)O和CO_(2)含量、控制合理的还原制度、优化自动控制程序、提高作业率等一系列措施,氢基竖炉技术经济指标显著改善。开机复产过程由10h缩短至3h,DRI日产量增加300dCOG单耗降至560m^(3)/t以下,矿比由1.400降至1.352以下,DRI合格率提高至100%,H,利用率提高至18.5%~19.5%,C0利用率提高至33.5%~34.5%,煤气综合利用率提高至30%~31%。The measures for improving the gas utilization rate of the hydrogen-based shaft furnace of ZXHT.are summarized.The operators encounter the furnace problems of high COG consumption and low comprehensive utilization rate of gas,thus a host of measures are carried out,for example,upgrading the pellet quality,increasing the inlet temperature of the reducing gas to the furnace,regulating the H,O and CO,content in the circulating reducing gas,adopting reasonable reduction sys-tem,optimizing the automatic control program,and improving the operation rate.These measures bring significant improve-ment of the furnace technoeconomic indicators.The time for start-up to restoring the normal production is shortened from 10 h to 3h,the daily output of DRI increases by 300Vd,the COG consumption falls to less than 560m^(3)/t,the ore ratio drops from 1.400 to below 1.352,the DRI qualification rate hits 100%,the utilization rate of H,and CO climb to 18.5%-19.5% and 33.5%-34.5%respectively,and the comprehensive utilization rate of coal gas rises to 30%-31%.

关 键 词：氢基竖炉 进口温度 球团矿质量 还原循环气体 煤气利用率 

分 类 号：TF554[冶金工程—钢铁冶金]