COREX熔融气化炉Rist操作线的建立和应用

Establishment and application of the Rist operating line for the COREX melter gasifier

考虑了块煤在熔融气化炉上部挥发分的析出和采用部分氧气燃烧析出挥发分中的焦油和碳氢化合物这一特点,利用改进的Rist操作线原理,建立了熔融气化炉操作线图,直观地体现了不同因素对炼铁过程能耗的影响.讨论了COREX熔融气化炉内上部吹氧燃烧焦油和碳氢化合物后操作线的变化,对比了加入不同块煤和半焦对上部吹氧量、能耗的影响,分析了将块煤中挥发分脱除后以半焦的形式加入炉内,熔融气化炉上部煤气氧化度、温度和煤气量的变化,以及对能耗的影响.

In consideration of the devolatilization of lump coal in the upper zone ot the melter gasmer anti the burning of tar and hydrocarbon in volatile matter with oxygen, an operating line diagram of the melter gasifier was established by utilization of the improved Rist operating line principle. The Rist operating line diagram can directly reflect the effect of various factors on the energy consumption of the ironmaking process. Changes of the Rist operating line were discussed after the burning of volatile matter and hydrocarbon with blowing oxygen in the upper zone of the melter gasifier. The oxygen consumption and energy consumption were compared when charging different lump coals and semi coke. The changes in gas oxidation degree, temperature and volume change as well as their influence on the energy consumption were analyzed when charging semi coke after volatile matter removal.