Abstract

The mini blast furnace based on biomass operation is a viable technology that neutralizes fossil carbon emissions in the production route of green hot metal. In this study, we analyze the actual mini blast furnace operation and propose new operational practices using the multiphase multicomponent modeling approach. We newly introduced additional chemical species and rate equations to account for the proposed new simulated scenarios. The model results for actual operation are favorably compared with the industrial data. Thus, new promising operational techniques based on high rates of pulverized charcoal and hot hydrogen injections are proposed and analyzed from the point of view of the process efficiency and carbon intensity. It is demonstrated that the combined operational conditions of higher pulverized charcoal and hot hydrogen injection furnish the best performance for cleaner hot metal production with the lowest carbon intensity.

Graphical Abstract

中文翻译：

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综合模型作为开发基于生物质和氢气运行的新型迷你高炉技术的工具

摘要

基于生物质运行的微型高炉是一种可行的技术，可以中和绿色铁水生产路线中的化石碳排放。在这项研究中，我们分析了实际的微型高炉操作，并使用多相多组分建模方法提出了新的操作方法。我们新引入了其他化学物种和速率方程式，以解决建议的新模拟方案。实际运行的模型结果与工业数据进行了比较。因此，从工艺效率和碳强度的观点出发，提出并分析了基于高速率的木炭和热氢注入的新的有前途的操作技术。

图形概要