氧气高炉多流体数值模拟与分析

为研究不同氧气高炉操作流程及操作参数对高炉内部过程产生的影响，预测氧气高炉流程各参数的变化规律，基于多流体理论、冶金传输原理、冶金反应动力学与热力学理论以及计算流体力学建立了普通高炉多流体模型，并在此基础上修改边界条件及内部相关参数，建立氧气高炉多流体数学模型。通过建立的模型分别对普通高炉和气化炉氧气高炉(GF-FOBF)流程中的氧气高炉进行了模拟计算，得到两种工艺流程下高炉内温度场、浓度场和速度场等典型参数的分布情况。通过对计算结果的对比，分析了氧气高炉操作条件下炉内状态的主要特征和相对于普通高炉发生的变化，发现氧气高炉内部速度场、温度场均发生变化，特别是气相组分的均匀分布问题明显。本模型可为氧气高炉流程试验及流程开发提供参考。

Multi-fluid numerical simulation and analysis of blast furnace inoxygen blast furnace process

To study the effects of different oxygen blast furnace operating procedures and their operating parameters on blast furnace process, and to predict the variation of each parameter of oxygen blast furnace process, a multi-fluid blast furnace model is built based on multi-fluid theory, metallurgical transport theory, metallurgical thermodynamics and kinetics, and computational fluid dynamics. By modifying its boundary conditions and internal parameters, the establishment of multi-fluid model of oxygen blast furnace is achieved. Numerical simulation of the normal blast furnace and gasification furnace-oxygen blast furnace (GF-FOBF)is carried out with this model and the fields of typical parameters, such as temperature field, are obtained. By comparing the calculation results, the main features of the furnace under oxygen blast furnace operating conditions and changes relative to the traditional blast furnace are analyzed. It can be found that the oxygen blast furnace internal velocity field and temperature field change, especially the distribution of gas. This model can provide reference for the experiment and development of the oxygen blast furnace process.