高富氧大喷煤技术分析

Technology on oxygen enriched pulverized coal injection

提高煤比是今后我国炼铁的重要任务。富氧对提高煤比的作用在理论和实践中都得到证实。3%～5%的富氧是实现200kg/t以上煤比的必要条件。当今的价格体系使富氧在经济上已可行,变压吸附制氧为高炉用氧提供了新的选择。必须建立完善的高富氧大喷煤技术保障措施,尤其重视风口监测、鼓风湿分的监控以及喷煤系统的完善。

High coal ratio is a target of ironmaking in future and the role of oxygen enrichment in high coal ratio has been proved in theory and practice. 3% ~ 5% oxygen enrichment is essential for realizing the coal ratio higher than 200 kg/t. The current price system makes the oxygen enrichment feasible economically and oxygen generation by absorption at variable pressure provides new routine of oxygen supply for blast furnace. It is very important to set up a complete technical system of pulverized coal injection with high oxygen enrichment, monitoring of tuyere status and water content in blasting air.