<報文>移動層による酸化鉄ペレットの還元反応操作における流動, 伝熱, 物質移動の同時解析

概要

論文の詳細を見る
A two-dimensional mathematical model was developed to obtain the distributions of the process variables in moving bed reactors for the reduction of iron oxide pellets and to evaluate reactor performance. The model involves not only heat and material balance equations for a noncatalytic reaction system, but also multi-dimensional Ergun's equation as the equation of motion. Numerical computation was conducted for two modes of gas introduction assuming the simplified structure of the bed. In the first case, reducing gas was introduced through the side slit for hydrogen reduction. In the other case, it was done from the bottom of the bed for hydrogen and carbon monoxide reduction. It was found from the computed results that the structure of the bed strongly affected the gas flow, and the nonuniform distributions of temperature and concentration of the gas were primarily caused by the nonuniform gas flow and chemical reaction. The operational results which included the effects of the bed structure and the nonuniform gas flow were obtained from the model. This means that the model is useful for estimating the performance of large-scale industrial shaft furnaces.
東北大学の論文
1980-03-06