铁水连续预处理涡流反应器的优化运行研究(Ⅱ)

RESEARCH ON OPERATIONAL OPTIMIZATION OF A SWIRLING-REACTOR FOR CONTINUOUS PRETREATMENT OF HOT METAL(Ⅱ

铁水预处理技术中反应器的设计至关重要。本文采用k-ε湍流模型与颗粒随机轨道模型相结合的两相流动模型,建立了铁水、反应剂的两相流动模型;采用数值模拟的方法研究了涡流反应器内的铁水、反应剂的两相流动特征;揭示了颗粒喷入位置、喷入速度、铁水流速、铁水流量等参数对反应器内两相流动、混合的影响。为连续处理工艺所需反应器的优化设计及工艺过程的研究与实现打下了基础。

Reactor designing is a key problem in developing continuous hot-metal pretreatment technology. In this paper, a mathematical model for numerically studying two-phase hot-metal and particle flow is established. The models used include the k-ε two-equation model for turbulence hot-metal flow and the random trajectory model for particle flow. The characteristics of two-phase flow in a swirling-reactor are numerically studied. The effects of each operating parameter on the two-phase flow and mixture are obtained. All these results offer scientific basis for designing and optimizing the hot metal continuous pretreatment technology.