The results show that, double injection system can get high replacement ratio of coal liquids fuel and good operation performance of the engine.
试验表明，采用此方法，可获得较高的煤液化燃料的代用率，发动机工作性能良好。
The increase of high blast temperature is an effective measure to enhance pulverized coal injection rate, reduce energy consumption, and cost.
高风温是高炉提高喷煤比、降低工序能耗、降低成本的有效措施。
Calculation and plotting methods of BF operation line without coal injection are modified, and calculation formulae of BF operation line with oxygen enrichment and high PCI rate are deduced.
作者对不喷煤时高炉操作线的计算和绘制方法进行修正，推导出富氧大喷煤时高炉操作线的计算公式。
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