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开发了高炉流场模拟模型。该模型采用厄冈方程描述炉内的二维气体流动,考虑了风口回旋区、死焦堆、软熔带、炉顶料面及炉料颗粒分布、中心焦柱、滴下带液流分布等因素对气流阻力的影响,并应用有限单元法求解,因此具有模拟复杂高炉操作条件下气流分布规律的功能。应用该模型研究了鼓风参数、装料条件等对气流分布的影响,从理论上解释了炉墙结厚所导致的高炉“上热下凉”现象,预测了超大量喷煤下气流分布的变化趋势,为生产操作系统的设计提供了科学依据。
Developed a blast furnace flow simulation model. The model describes the two-dimensional gas flow in the furnace by using the Ogon equation. Considering the factors such as tuyere area, dead-coke pile, reflow zone, furnace top surface and charge particle distribution, central coke column and drip flow distribution, Air flow resistance, and apply the finite element method to solve it, so it has the function of simulating the airflow distribution law under complicated blast furnace operating conditions. The model was used to study the influence of blasting parameters and loading conditions on the gas flow distribution. The phenomenon of “hot and cold” caused by the thickening of the furnace wall was explained theoretically, and the gas flow distribution under super-large amount of coal gas injection was predicted The trend of change provides a scientific basis for the design of production operating system.